Initial commit: doujinshi-dl generic plugin framework

History reset as part of DMCA compliance. The project has been
refactored into a generic, site-agnostic download framework.
Site-specific logic lives in separate plugin packages.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.dockerignore

@@ -0,0 +1,11 @@
+.git
+.github
+.gitignore
+venv
+*.egg-info
+build
+dist
+images
+LICENSE
+.travis.yml
+.idea

.github/workflows/docker-image.yml

@@ -0,0 +1,27 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ "master" ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    -
+      name: Login to Docker Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+    - 
+      name: Build the Docker image
+      uses: docker/build-push-action@v4
+      with:
+        context: .
+        push: true
+        tags: ricterz/doujinshi-dl:latest

.gitignore

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+*.py[cod]
+.idea/
+build
+dist/
+*.egg-info
+.python-version
+.DS_Store
+output/
+venv/
+.vscode/
+test-output
+*.whl

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+`doujinshi-dl` is a Python CLI tool for downloading doujinshi from mirror sites. Entry point: `nhentai.command:main`. PyPI distribution name: `doujinshi-dl`, Python package name: `nhentai`.
+
+## Development Setup
+
+```bash
+# Install in editable mode
+pip install --no-cache-dir .
+
+# With nhentai plugin
+pip install -e . -e ../doujinshi-dl-nhentai/
+
+# Or with Poetry
+poetry install
+```
+
+## Running the CLI
+
+```bash
+doujinshi-dl --id <ID>
+doujinshi-dl --search "keyword" [--download]
+doujinshi-dl --favorites --download
+```
+
+## Tests
+
+All tests are integration tests that make real HTTP requests and require environment variables:
+
+```bash
+export DDL_COOKIE="<cookie>"
+export DDL_UA="<user-agent>"
+export DOUJINSHI_DL_URL="<mirror-url>"
+
+# Run all tests
+python -m unittest discover tests/
+
+# Run a specific test file
+python -m unittest tests.test_parser
+
+# Run a single test case
+python -m unittest tests.test_parser.TestParser.test_search
+```
+
+## Architecture
+
+The pipeline flows through these modules in sequence:
+
+1. **`cmdline.py`** — Parses CLI arguments; loads/saves config from `~/.doujinshi-dl/config.json`
+2. **`parser.py`** — Scrapes mirror site via BeautifulSoup and HTTP; functions: `doujinshi_parser`, `search_parser`, `favorites_parser`
+3. **`doujinshi.py`** — `Doujinshi` model holding metadata and building the download queue; folder-name format tokens: `%i` (ID), `%t` (title), `%a` (artist), etc.
+4. **`downloader.py`** — Async image downloading via `httpx` + `asyncio`; `Downloader` writes files directly, `CompressedDownloader` writes `.zip`
+5. **`utils.py`** — HTTP helpers (`request()`, `async_request()`), HTML generation, PDF/CBZ creation, SQLite history DB
+6. **`serializer.py`** — Writes `metadata.json`, `ComicInfo.xml`, `info.txt` alongside downloaded images
+7. **`command.py`** — Orchestrates the full pipeline; the `main()` entry point
+
+## Key Constants & Environment Variables
+
+All URLs, paths, and defaults live in **`constant.py`** (plugin package).
+
+| Variable | Purpose |
+|----------|---------|
+| `DOUJINSHI_DL_URL` | Mirror base URL (required to run) |
+| `DEBUG` | Enable debug logging; `DEBUG=NODOWNLOAD` skips actual downloads |
+| `DDL_COOKIE` | Cookie for authentication (also used by tests) |
+| `DDL_UA` | User-agent string (also used by tests) |
+
+## Persistence
+
+- **Config:** `~/.doujinshi-dl/config.json` (cookie, user-agent, proxy, language, template)
+- **History DB:** `~/.doujinshi-dl/history.sqlite3` (SQLite, tracks downloaded IDs to avoid re-downloading)
+- On Linux, `$XDG_DATA_HOME` is respected for these paths
+
+## Viewer Templates
+
+`doujinshi_dl/viewer/` contains bundled HTML viewer templates (`default/`, `minimal/`) used by `generate_html()` in `utils.py` to produce a local browsing interface after download.

Dockerfile

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+FROM python:3
+
+WORKDIR /usr/src/doujinshi-dl
+
+COPY . .
+RUN pip install --no-cache-dir .
+
+WORKDIR /output
+ENTRYPOINT ["doujinshi-dl"]

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015 Ricter Zheng
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.rst

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+doujinshi-dl
+============
+
+あなたも変態。 いいね?
+
+|pypi| |version| |license|
+
+
+doujinshi-dl is a CLI tool for downloading doujinshi from mirror sites.
+
+===================
+Manual Installation
+===================
+From Github:
+
+.. code-block::
+
+    git clone https://github.com/RicterZ/doujinshi-dl
+    cd doujinshi-dl
+    pip install --no-cache-dir .
+
+Build Docker container:
+
+.. code-block::
+
+    git clone https://github.com/RicterZ/doujinshi-dl
+    cd doujinshi-dl
+    docker build -t doujinshi-dl:latest .
+    docker run --rm -it -v ~/Downloads/doujinshi:/output doujinshi-dl --id 123855
+
+==================
+Installation
+==================
+From PyPI with pip:
+
+.. code-block::
+
+   pip install doujinshi-dl
+
+Install a plugin to connect to a mirror site:
+
+.. code-block::
+
+   pip install doujinshi-dl-<plugin-name>
+
+For a self-contained installation, use `pipx <https://github.com/pipxproject/pipx/>`_:
+
+.. code-block::
+
+   pipx install doujinshi-dl
+
+=====
+Usage
+=====
+**⚠️IMPORTANT⚠️**: To bypass Cloudflare, you should use ``--cookie`` and ``--useragent`` options to store your cookie and user-agent.
+
+.. code-block:: bash
+
+    doujinshi-dl --useragent "USER AGENT of YOUR BROWSER"
+    doujinshi-dl --cookie "YOUR COOKIE"
+
+**NOTE:**
+
+- The format of the cookie is ``"csrftoken=TOKEN; sessionid=ID; cf_clearance=CLOUDFLARE"``
+- ``cf_clearance`` cookie and useragent must be set if you encounter "blocked by cloudflare captcha" error. Make sure you use the same IP and useragent as when you got it
+
+| To get csrftoken and sessionid, first login to your account in a web browser, then:
+| (Chrome) |ve| |ld| More tools    |ld| Developer tools     |ld| Application |ld| Storage |ld| Cookies |ld| your mirror URL
+| (Firefox) |hv| |ld| Web Developer |ld| Web Developer Tools                  |ld| Storage |ld| Cookies |ld| your mirror URL
+|
+
+.. |hv| unicode:: U+2630 .. https://www.compart.com/en/unicode/U+2630
+.. |ve| unicode:: U+22EE .. https://www.compart.com/en/unicode/U+22EE
+.. |ld| unicode:: U+2014 .. https://www.compart.com/en/unicode/U+2014
+
+*The default download folder will be the path where you run the command (%cd% or $PWD).*
+
+Download specified doujinshi:
+
+.. code-block:: bash
+
+    doujinshi-dl --id 123855 123866 123877
+
+Download doujinshi with ids specified in a file (doujinshi ids split by line):
+
+.. code-block:: bash
+
+    doujinshi-dl --file=doujinshi.txt
+
+Set search default language:
+
+.. code-block:: bash
+
+    doujinshi-dl --language=english
+
+Search a keyword and download the first page:
+
+.. code-block:: bash
+
+    doujinshi-dl --search="tomori" --page=1 --download
+    # you also can download by tags and multiple keywords
+    doujinshi-dl --search="tag:lolicon, artist:henreader, tag:full color"
+    doujinshi-dl --search="lolicon, henreader, full color"
+
+Download your favorites with delay:
+
+.. code-block:: bash
+
+    doujinshi-dl --favorites --download --delay 1 --page 3-5,7
+
+Format output doujinshi folder name:
+
+.. code-block:: bash
+
+    doujinshi-dl --id 261100 --format '[%i]%s'
+    # for Windows
+    doujinshi-dl --id 261100 --format "[%%i]%%s"
+
+Supported doujinshi folder formatter:
+
+- %i: Doujinshi id
+- %f: Doujinshi favorite count
+- %t: Doujinshi name
+- %s: Doujinshi subtitle (translated name)
+- %a: Doujinshi authors' name
+- %g: Doujinshi groups name
+- %p: Doujinshi pretty name
+- %ag: Doujinshi authors name or groups name
+
+Note: for Windows operation system, please use double "%", such as "%%i".
+
+Other options:
+
+.. code-block::
+
+    Usage:
+      doujinshi-dl --search [keyword] --download
+      DOUJINSHI_DL_URL=https://mirror-url/ doujinshi-dl --id [ID ...]
+      doujinshi-dl --file [filename]
+
+    Environment Variable:
+      DOUJINSHI_DL_URL        mirror url
+
+    Options:
+      -h, --help            show this help message and exit
+      --download, -D        download doujinshi (for search results)
+      --no-download         skip downloading (for search results)
+      --show, -S            just show the doujinshi information
+      --id ID [ID ...]      doujinshi ids set, e.g. 167680 167681 167682
+      --search, -s KEYWORD  search doujinshi by keyword
+      --favorites, -F       list or download your favorites
+      --artist, -a ARTIST   list doujinshi by artist name
+      --page-all            all search results
+      --page, --page-range PAGE
+                            page number of search results. e.g. 1,2-5,14
+      --sorting, --sort {recent,popular,popular-today,popular-week,date}
+                            sorting of doujinshi (recent / popular / popular-[today|week])
+      --output, -o OUTPUT_DIR
+                            output dir
+      --threads, -t THREADS
+                            thread count for downloading doujinshi
+      --timeout, -T TIMEOUT
+                            timeout for downloading doujinshi
+      --delay, -d DELAY     slow down between downloading every doujinshi
+      --retry RETRY         retry times when downloading failed
+      --exit-on-fail        exit on fail to prevent generating incomplete files
+      --proxy PROXY         store a proxy, for example: -p "http://127.0.0.1:1080"
+      --file, -f FILE       read gallery IDs from file.
+      --format NAME_FORMAT  format the saved folder name
+      --no-filename-padding
+                            no padding in the images filename, such as '001.jpg'
+      --html [HTML_VIEWER]  generate an HTML viewer in the specified directory, or
+                            scan all subfolders within the entire directory to
+                            generate the HTML viewer. By default, current working
+                            directory is used.
+      --no-html             don't generate HTML after downloading
+      --gen-main            generate a main viewer contain all the doujin in the folder
+      --cbz, -C             generate Comic Book CBZ File
+      --pdf, -P             generate PDF file
+      --meta                generate a metadata file in doujinshi format
+      --update-meta         update the metadata file of a doujinshi, update CBZ
+                            metadata if exists
+      --rm-origin-dir       remove downloaded doujinshi dir when generated CBZ or PDF file
+      --move-to-folder      remove files in doujinshi dir then move new file to
+                            folder when generated CBZ or PDF file
+      --regenerate          regenerate the cbz or pdf file if exists
+      --zip                 package into a single zip file
+      --cookie COOKIE       set cookie to bypass Cloudflare captcha
+      --useragent, --user-agent USERAGENT
+                            set useragent to bypass Cloudflare captcha
+      --language LANGUAGE   set default language to parse doujinshis
+      --clean-language      set DEFAULT as language to parse doujinshis
+      --save-download-history
+                            save downloaded doujinshis, whose will be skipped if
+                            you re-download them
+      --clean-download-history
+                            clean download history
+      --template VIEWER_TEMPLATE
+                            set viewer template
+      --legacy              use legacy searching method
+
+======
+Mirror
+======
+To use a mirror, set the ``DOUJINSHI_DL_URL`` environment variable to your mirror's base URL.
+
+.. code-block:: bash
+
+    DOUJINSHI_DL_URL=https://your-mirror.example.com doujinshi-dl --id 123456
+
+.. image:: https://github.com/RicterZ/doujinshi-dl/raw/master/images/search.png
+    :alt: search
+    :align: center
+.. image:: https://github.com/RicterZ/doujinshi-dl/raw/master/images/download.png
+    :alt: download
+    :align: center
+.. image:: https://github.com/RicterZ/doujinshi-dl/raw/master/images/viewer.png
+    :alt: viewer
+    :align: center
+
+
+.. |license| image:: https://img.shields.io/github/license/ricterz/nhentai.svg
+   :target: https://github.com/RicterZ/nhentai/blob/master/LICENSE
+
+.. |pypi| image:: https://img.shields.io/pypi/v/doujinshi-dl.svg
+   :target: https://pypi.org/project/doujinshi-dl/
+
+.. |version| image:: https://img.shields.io/badge/python-3.8%2B-blue.svg
+   :target: https://pypi.org/project/doujinshi-dl/

doujinshi_dl/__init__.py

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+__version__ = '2.0.5'
+__author__ = 'RicterZ'
+__email__ = 'ricterzheng@gmail.com'

doujinshi_dl/cmdline.py

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+# coding: utf-8
+
+import os
+import sys
+import json
+
+from urllib.parse import urlparse
+from argparse import ArgumentParser
+
+from doujinshi_dl import __version__
+from doujinshi_dl.utils import generate_html, generate_main_html, DB, EXTENSIONS
+from doujinshi_dl.logger import logger
+from doujinshi_dl.constant import PATH_SEPARATOR
+
+
+_plugin_const_cache = None
+
+
+def _plugin_const():
+    """Return the active plugin's constant module without hard-coding plugin names."""
+    global _plugin_const_cache
+    if _plugin_const_cache is not None:
+        return _plugin_const_cache
+    from doujinshi_dl.core.registry import get_first_plugin
+    import importlib
+    plugin = get_first_plugin()
+    pkg = type(plugin).__module__.split('.')[0]  # top-level package name of the plugin
+    _plugin_const_cache = importlib.import_module(f'{pkg}.constant')
+    return _plugin_const_cache
+
+
+def banner():
+    logger.debug(f'doujinshi-dl ver {__version__}: あなたも変態。 いいね?')
+
+
+def load_config():
+    c = _plugin_const()
+    if not os.path.exists(c.PLUGIN_CONFIG_FILE):
+        return
+
+    try:
+        with open(c.PLUGIN_CONFIG_FILE, 'r') as f:
+            c.CONFIG.update(json.load(f))
+    except json.JSONDecodeError:
+        logger.error('Failed to load config file.')
+        write_config()
+
+
+def write_config():
+    c = _plugin_const()
+    if not os.path.exists(c.PLUGIN_HOME):
+        os.mkdir(c.PLUGIN_HOME)
+
+    with open(c.PLUGIN_CONFIG_FILE, 'w') as f:
+        f.write(json.dumps(c.CONFIG))
+
+
+def callback(option, _opt_str, _value, parser):
+    if option == '--id':
+        pass
+    value = []
+
+    for arg in parser.rargs:
+        if arg.isdigit():
+            value.append(int(arg))
+        elif arg.startswith('-'):
+            break
+        else:
+            logger.warning(f'Ignore invalid id {arg}')
+
+    setattr(parser.values, option.dest, value)
+
+
+def cmd_parser():
+    load_config()
+    c = _plugin_const()
+
+    parser = ArgumentParser(
+        description='\n  doujinshi-dl --search [keyword] --download'
+                    '\n  DOUJINSHI_DL_URL=https://mirror-url/ doujinshi-dl --id [ID ...]'
+                    '\n  doujinshi-dl --file [filename]'
+                    '\n\nEnvironment Variable:\n'
+                    '  DOUJINSHI_DL_URL        mirror url'
+    )
+
+    # operation options
+    parser.add_argument('--download', '-D', dest='is_download', action='store_true',
+                        help='download doujinshi (for search results)')
+    parser.add_argument('--no-download', dest='no_download', action='store_true', default=False,
+                        help='download doujinshi (for search results)')
+    parser.add_argument('--show', '-S', dest='is_show', action='store_true',
+                        help='just show the doujinshi information')
+
+    # doujinshi options
+    parser.add_argument('--id', dest='id', nargs='+', type=int,
+                        help='doujinshi ids set, e.g. 167680 167681 167682')
+    parser.add_argument('--search', '-s', type=str, dest='keyword',
+                        help='search doujinshi by keyword')
+    parser.add_argument('--favorites', '-F', action='store_true', dest='favorites',
+                        help='list or download your favorites')
+    parser.add_argument('--artist', '-a', type=str, dest='artist',
+                        help='list doujinshi by artist name')
+
+    # page options
+    parser.add_argument('--page-all', dest='page_all', action='store_true', default=False,
+                        help='all search results')
+    parser.add_argument('--page', '--page-range', type=str, dest='page',
+                        help='page number of search results. e.g. 1,2-5,14')
+    parser.add_argument('--sorting', '--sort', dest='sorting', type=str, default='popular',
+                        help='sorting of doujinshi (recent / popular / popular-[today|week])',
+                        choices=['recent', 'popular', 'popular-today', 'popular-week', 'date'])
+
+    # download options
+    parser.add_argument('--output', '-o', type=str, dest='output_dir', default='.',
+                        help='output dir')
+    parser.add_argument('--threads', '-t', type=int, dest='threads', default=5,
+                        help='thread count for downloading doujinshi')
+    parser.add_argument('--timeout', '-T', type=int, dest='timeout', default=30,
+                        help='timeout for downloading doujinshi')
+    parser.add_argument('--delay', '-d', type=int, dest='delay', default=0,
+                        help='slow down between downloading every doujinshi')
+    parser.add_argument('--retry', type=int, dest='retry', default=3,
+                        help='retry times when downloading failed')
+    parser.add_argument('--exit-on-fail', dest='exit_on_fail', action='store_true', default=False,
+                        help='exit on fail to prevent generating incomplete files')
+    parser.add_argument('--proxy', type=str, dest='proxy',
+                        help='store a proxy, for example: -p "http://127.0.0.1:1080"')
+    parser.add_argument('--file', '-f', type=str, dest='file',
+                        help='read gallery IDs from file.')
+    parser.add_argument('--format', type=str, dest='name_format', default='[%i][%a][%t]',
+                        help='format the saved folder name')
+
+    parser.add_argument('--no-filename-padding', action='store_true', dest='no_filename_padding',
+                        default=False, help='no padding in the images filename, such as \'001.jpg\'')
+
+    # generate options
+    parser.add_argument('--html', dest='html_viewer', type=str, nargs='?', const='.',
+                        help='generate an HTML viewer in the specified directory, or scan all subfolders '
+                             'within the entire directory to generate the HTML viewer. By default, current '
+                             'working directory is used.')
+    parser.add_argument('--no-html', dest='is_nohtml', action='store_true',
+                        help='don\'t generate HTML after downloading')
+    parser.add_argument('--gen-main', dest='main_viewer', action='store_true',
+                        help='generate a main viewer contain all the doujin in the folder')
+    parser.add_argument('--cbz', '-C', dest='is_cbz', action='store_true',
+                        help='generate Comic Book CBZ File')
+    parser.add_argument('--pdf', '-P', dest='is_pdf', action='store_true',
+                        help='generate PDF file')
+
+    parser.add_argument('--meta', dest='generate_metadata', action='store_true', default=False,
+                        help='generate a metadata file in doujinshi format')
+    parser.add_argument('--update-meta', dest='update_metadata', action='store_true', default=False,
+                        help='update the metadata file of a doujinshi, update CBZ metadata if exists')
+
+    parser.add_argument('--rm-origin-dir', dest='rm_origin_dir', action='store_true', default=False,
+                        help='remove downloaded doujinshi dir when generated CBZ or PDF file')
+    parser.add_argument('--move-to-folder', dest='move_to_folder', action='store_true', default=False,
+                        help='remove files in doujinshi dir then move new file to folder when generated CBZ or PDF file')
+
+    parser.add_argument('--regenerate', dest='regenerate', action='store_true', default=False,
+                        help='regenerate the cbz or pdf file if exists')
+    parser.add_argument('--zip', action='store_true', help='Package into a single zip file')
+
+    # site options
+    parser.add_argument('--cookie', type=str, dest='cookie',
+                        help='set cookie to bypass Cloudflare captcha')
+    parser.add_argument('--useragent', '--user-agent', type=str, dest='useragent',
+                        help='set useragent to bypass Cloudflare captcha')
+    parser.add_argument('--language', type=str, dest='language',
+                        help='set default language to parse doujinshis')
+    parser.add_argument('--clean-language', dest='clean_language', action='store_true', default=False,
+                        help='set DEFAULT as language to parse doujinshis')
+    parser.add_argument('--save-download-history', dest='is_save_download_history', action='store_true',
+                        default=False, help='save downloaded doujinshis, whose will be skipped if you re-download them')
+    parser.add_argument('--clean-download-history', action='store_true', default=False, dest='clean_download_history',
+                        help='clean download history')
+    parser.add_argument('--template', dest='viewer_template', type=str, default='',
+                        help='set viewer template')
+    parser.add_argument('--legacy', dest='legacy', action='store_true', default=False,
+                        help='use legacy searching method')
+
+    args = parser.parse_args()
+
+    if args.html_viewer:
+        if not os.path.exists(args.html_viewer):
+            logger.error(f'Path \'{args.html_viewer}\' not exists')
+            sys.exit(1)
+
+        for root, dirs, files in os.walk(args.html_viewer):
+            if not dirs:
+                generate_html(output_dir=args.html_viewer, template=c.CONFIG['template'])
+                sys.exit(0)
+
+            for dir_name in dirs:
+                # it will scan the entire subdirectories
+                doujinshi_dir = os.path.join(root, dir_name)
+                items = set(map(lambda s: os.path.splitext(s)[1], os.listdir(doujinshi_dir)))
+
+                # skip directory without any images
+                if items & set(EXTENSIONS):
+                    generate_html(output_dir=doujinshi_dir, template=c.CONFIG['template'])
+
+            sys.exit(0)
+
+        sys.exit(0)
+
+    if args.main_viewer and not args.id and not args.keyword and not args.favorites:
+        generate_main_html()
+        sys.exit(0)
+
+    if args.clean_download_history:
+        with DB() as db:
+            db.clean_all()
+
+        logger.info('Download history cleaned.')
+        sys.exit(0)
+
+    # --- set config ---
+    if args.cookie is not None:
+        c.CONFIG['cookie'] = args.cookie.strip()
+        write_config()
+        logger.info('Cookie saved.')
+
+    if args.useragent is not None:
+        c.CONFIG['useragent'] = args.useragent.strip()
+        write_config()
+        logger.info('User-Agent saved.')
+
+    if args.language is not None:
+        c.CONFIG['language'] = args.language
+        write_config()
+        logger.info(f'Default language now set to "{args.language}"')
+        # TODO: search without language
+
+    if any([args.cookie, args.useragent, args.language]):
+        sys.exit(0)
+
+    if args.proxy is not None:
+        proxy_url = urlparse(args.proxy)
+        if not args.proxy == '' and proxy_url.scheme not in ('http', 'https', 'socks5', 'socks5h',
+                                                             'socks4', 'socks4a'):
+            logger.error(f'Invalid protocol "{proxy_url.scheme}" of proxy, ignored')
+            sys.exit(0)
+        else:
+            c.CONFIG['proxy'] = args.proxy
+            logger.info(f'Proxy now set to "{args.proxy}"')
+            write_config()
+            sys.exit(0)
+
+    if args.viewer_template is not None:
+        if not args.viewer_template:
+            args.viewer_template = 'default'
+
+        if not os.path.exists(os.path.join(os.path.dirname(__file__),
+                                           f'viewer/{args.viewer_template}/index.html')):
+            logger.error(f'Template "{args.viewer_template}" does not exists')
+            sys.exit(1)
+        else:
+            c.CONFIG['template'] = args.viewer_template
+            write_config()
+
+    # --- end set config ---
+
+    if args.favorites:
+        if not c.CONFIG['cookie']:
+            logger.warning('Cookie has not been set, please use `doujinshi-dl --cookie \'COOKIE\'` to set it.')
+            sys.exit(1)
+
+    if args.file:
+        with open(args.file, 'r') as f:
+            _ = [i.strip() for i in f.readlines()]
+            args.id = set(int(i) for i in _ if i.isdigit())
+
+    if (args.is_download or args.is_show) and not args.id and not args.keyword and not args.favorites and not args.artist:
+        logger.critical('Doujinshi id(s) are required for downloading')
+        parser.print_help()
+        sys.exit(1)
+
+    if not args.keyword and not args.id and not args.favorites and not args.artist:
+        parser.print_help()
+        sys.exit(1)
+
+    if args.threads <= 0:
+        args.threads = 1
+
+    elif args.threads > 15:
+        logger.critical('Maximum number of used threads is 15')
+        sys.exit(1)
+
+    return args

doujinshi_dl/command.py

@@ -0,0 +1,197 @@
+# coding: utf-8
+import os
+import shutil
+import sys
+import signal
+import platform
+import urllib3.exceptions
+
+from doujinshi_dl.cmdline import cmd_parser, banner, write_config
+from doujinshi_dl.core.registry import get_first_plugin
+from doujinshi_dl.core import config as core_config
+from doujinshi_dl.downloader import Downloader, CompressedDownloader
+from doujinshi_dl.logger import logger
+from doujinshi_dl.utils import (
+    generate_html, generate_doc, generate_main_html,
+    paging, signal_handler, DB, move_to_folder,
+)
+
+
+def main():
+    banner()
+
+    if sys.version_info < (3, 0, 0):
+        logger.error('doujinshi-dl requires Python 3.x')
+        sys.exit(1)
+
+    plugin = get_first_plugin()
+    parser = plugin.create_parser()
+    serializer = plugin.create_serializer()
+
+    options = cmd_parser()
+
+    # Let the plugin configure its own CONFIG and register runtime values
+    # (this also sets core_config 'base_url' from env or plugin default)
+    plugin.configure(options)
+
+    # Read common config values registered by the plugin
+    plugin_config = core_config.get('plugin_config', {})
+    base_url = core_config.get('base_url', os.getenv('DOUJINSHI_DL_URL', ''))
+    if not base_url:
+        logger.error('No target URL configured. Set DOUJINSHI_DL_URL or install a plugin that provides a default URL.')
+        sys.exit(1)
+    logger.info(f'Using mirror: {base_url}')
+
+    # CONFIG['proxy'] may have been updated after cmd_parser()
+    proxy = plugin_config.get('proxy', '')
+    if proxy:
+        if isinstance(proxy, dict):
+            proxy = proxy.get('http', '')
+            plugin_config['proxy'] = proxy
+            logger.warning(f'Update proxy config to: {proxy}')
+            write_config()
+        logger.info(f'Using proxy: {proxy}')
+
+    if not plugin_config.get('template'):
+        plugin_config['template'] = 'default'
+
+    template = plugin_config.get('template', 'default')
+    language = plugin_config.get('language', '')
+    logger.info(f'Using viewer template "{template}"')
+
+    # Check authentication
+    plugin.check_auth()
+
+    doujinshis = []
+    doujinshi_ids = []
+
+    page_list = paging(options.page)
+
+    if options.favorites:
+        if not options.is_download:
+            logger.warning('You do not specify --download option')
+
+        doujinshis = parser.favorites(page=page_list) if options.page else parser.favorites()
+
+    elif options.keyword:
+        if language:
+            logger.info(f'Using default language: {language}')
+            options.keyword += f' language:{language}'
+
+        doujinshis = parser.search(
+            options.keyword,
+            sorting=options.sorting,
+            page=page_list,
+            legacy=options.legacy,
+            is_page_all=options.page_all,
+        )
+
+    elif options.artist:
+        doujinshis = parser.search(
+            options.artist,
+            sorting=options.sorting,
+            page=page_list,
+            is_page_all=options.page_all,
+            type_='ARTIST',
+        )
+
+    elif not doujinshi_ids:
+        doujinshi_ids = options.id
+
+    plugin.print_results(doujinshis)
+    if options.is_download and doujinshis:
+        doujinshi_ids = [i['id'] for i in doujinshis]
+
+    if options.is_save_download_history:
+        with DB() as db:
+            data = set(map(int, db.get_all()))
+
+        doujinshi_ids = list(set(map(int, doujinshi_ids)) - set(data))
+        logger.info(f'New doujinshis account: {len(doujinshi_ids)}')
+
+    if options.zip:
+        options.is_nohtml = True
+
+    if not options.is_show:
+        downloader = (CompressedDownloader if options.zip else Downloader)(
+            path=options.output_dir,
+            threads=options.threads,
+            timeout=options.timeout,
+            delay=options.delay,
+            exit_on_fail=options.exit_on_fail,
+            no_filename_padding=options.no_filename_padding,
+        )
+
+        for doujinshi_id in doujinshi_ids:
+            meta = parser.fetch(str(doujinshi_id))
+            if not meta:
+                continue
+
+            doujinshi_model = plugin.create_model(meta, name_format=options.name_format)
+            doujinshi = doujinshi_model.doujinshi
+            doujinshi.downloader = downloader
+
+            if doujinshi.check_if_need_download(options):
+                doujinshi.download()
+            else:
+                logger.info(
+                    f'Skip download doujinshi because a PDF/CBZ file exists of doujinshi {doujinshi.name}'
+                )
+
+            doujinshi_dir = os.path.join(options.output_dir, doujinshi.filename)
+
+            if options.generate_metadata:
+                serializer.write_all(meta, doujinshi_dir)
+                logger.log(16, f'Metadata files have been written to "{doujinshi_dir}"')
+
+            if options.is_save_download_history:
+                with DB() as db:
+                    db.add_one(doujinshi.id)
+
+            if not options.is_nohtml:
+                generate_html(options.output_dir, doujinshi, template=template)
+
+            if options.is_cbz:
+                # Write ComicInfo.xml metadata before packaging
+                serializer.write_all(meta, doujinshi_dir)
+                generate_doc('cbz', options.output_dir, doujinshi, options.regenerate)
+
+            if options.is_pdf:
+                generate_doc('pdf', options.output_dir, doujinshi, options.regenerate)
+
+            if options.move_to_folder:
+                if options.is_cbz:
+                    move_to_folder(options.output_dir, doujinshi, 'cbz')
+                if options.is_pdf:
+                    move_to_folder(options.output_dir, doujinshi, 'pdf')
+
+            if options.rm_origin_dir:
+                if options.move_to_folder:
+                    logger.critical('You specified both --move-to-folder and --rm-origin-dir options, '
+                                    'you will not get anything :(')
+                shutil.rmtree(os.path.join(options.output_dir, doujinshi.filename), ignore_errors=True)
+
+        if options.main_viewer:
+            generate_main_html(options.output_dir)
+            serializer.finalize(options.output_dir)
+
+        if not platform.system() == 'Windows':
+            logger.log(16, '🍻 All done.')
+        else:
+            logger.log(16, 'All done.')
+
+    else:
+        for doujinshi_id in doujinshi_ids:
+            meta = parser.fetch(str(doujinshi_id))
+            if not meta:
+                continue
+            doujinshi_model = plugin.create_model(meta, name_format=options.name_format)
+            doujinshi = doujinshi_model.doujinshi
+            doujinshi.show()
+
+
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+signal.signal(signal.SIGINT, signal_handler)
+
+if __name__ == '__main__':
+    main()

doujinshi_dl/constant.py

@@ -0,0 +1,9 @@
+# coding: utf-8
+"""Main-package constants.
+
+Only the constants that the main package itself needs are defined here.
+Plugin-specific constants live in the respective plugin package.
+"""
+import os
+
+PATH_SEPARATOR = os.path.sep

doujinshi_dl/core/__init__.py

@@ -0,0 +1 @@
+# coding: utf-8

doujinshi_dl/core/config.py

@@ -0,0 +1,16 @@
+# coding: utf-8
+"""Runtime configuration store for the main package.
+
+Plugins write their paths and settings here so that generic utilities
+(e.g. db.py) can read them without hard-coding any plugin name.
+"""
+
+_runtime: dict = {}
+
+
+def set(key: str, value) -> None:
+    _runtime[key] = value
+
+
+def get(key: str, default=None):
+    return _runtime.get(key, default)

doujinshi_dl/core/downloader.py

@@ -0,0 +1,214 @@
+# coding: utf-
+
+import os
+import asyncio
+import httpx
+import urllib3.exceptions
+import zipfile
+import io
+
+from urllib.parse import urlparse
+from doujinshi_dl.core.logger import logger
+from doujinshi_dl.core.utils.db import Singleton
+from doujinshi_dl.core import config as core_config
+
+
+async def _async_request(method, url, timeout=30, proxy=None):
+    """Minimal async HTTP helper using httpx directly."""
+    # httpx >=0.28 uses `proxy` (str), older versions used `proxies` (dict)
+    client_kwargs = {'verify': False}
+    if proxy:
+        client_kwargs['proxy'] = proxy
+    async with httpx.AsyncClient(**client_kwargs) as client:
+        headers = {}
+        cookie = core_config.get('plugin_config', {}).get('cookie', '')
+        useragent = core_config.get('plugin_config', {}).get('useragent', '')
+        if cookie:
+            headers['Cookie'] = cookie
+        if useragent:
+            headers['User-Agent'] = useragent
+        return await client.request(method, url, timeout=timeout, headers=headers, follow_redirects=True)
+
+
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+def download_callback(result):
+    result, data = result
+    if result == 0:
+        logger.warning('fatal errors occurred, ignored')
+    elif result == -1:
+        logger.warning(f'url {data} return status code 404')
+    elif result == -2:
+        logger.warning('Ctrl-C pressed, exiting sub processes ...')
+    elif result == -3:
+        # workers won't be run, just pass
+        pass
+    else:
+        logger.log(16, f'{data} downloaded successfully')
+
+
+class Downloader(Singleton):
+    def __init__(self, path='', threads=5, timeout=30, delay=0, exit_on_fail=False,
+                 no_filename_padding=False):
+        self.threads = threads
+        self.path = str(path)
+        self.timeout = timeout
+        self.delay = delay
+        self.exit_on_fail = exit_on_fail
+        self.folder = None
+        self.semaphore = None
+        self.no_filename_padding = no_filename_padding
+
+    async def fiber(self, tasks):
+        self.semaphore = asyncio.Semaphore(self.threads)
+        for completed_task in asyncio.as_completed(tasks):
+            try:
+                result = await completed_task
+                if result[0] > 0:
+                    logger.info(f'{result[1]} download completed')
+                else:
+                    raise Exception(f'{result[1]} download failed, return value {result[0]}')
+            except Exception as e:
+                logger.error(f'An error occurred: {e}')
+                if self.exit_on_fail:
+                    raise Exception('User intends to exit on fail')
+
+    async def _semaphore_download(self, *args, **kwargs):
+        async with self.semaphore:
+            return await self.download(*args, **kwargs)
+
+    async def download(self, url, folder='', filename='', retried=0, proxy=None, length=0):
+        logger.info(f'Starting to download {url} ...')
+
+        if self.delay:
+            await asyncio.sleep(self.delay)
+
+        filename = filename if filename else os.path.basename(urlparse(url).path)
+        base_filename, extension = os.path.splitext(filename)
+
+        if not self.no_filename_padding:
+            filename = base_filename.zfill(length) + extension
+        else:
+            filename = base_filename + extension
+
+        try:
+            response = await _async_request('GET', url, timeout=self.timeout, proxy=proxy)
+
+            if response.status_code != 200:
+                path = urlparse(url).path
+                image_url_mirrors = core_config.get('image_url_mirrors', [])
+                for mirror in image_url_mirrors:
+                    logger.info(f"Try mirror: {mirror}{path}")
+                    mirror_url = f'{mirror}{path}'
+                    response = await _async_request('GET', mirror_url, timeout=self.timeout, proxy=proxy)
+                    if response.status_code == 200:
+                        break
+
+            if not await self.save(filename, response):
+                logger.error(f'Can not download image {url}')
+                return -1, url
+
+        except (httpx.HTTPStatusError, httpx.TimeoutException, httpx.ConnectError) as e:
+            retry_times = core_config.get('retry_times', 3)
+            if retried < retry_times:
+                logger.warning(f'Download {filename} failed, retrying({retried + 1}) times...')
+                return await self.download(
+                    url=url,
+                    folder=folder,
+                    filename=filename,
+                    retried=retried + 1,
+                    proxy=proxy,
+                )
+            else:
+                logger.warning(f'Download {filename} failed with {retry_times} times retried, skipped')
+                return -2, url
+
+        except Exception as e:
+            import traceback
+
+            logger.error(f"Exception type: {type(e)}")
+            traceback.print_stack()
+            logger.critical(str(e))
+            return -9, url
+
+        except KeyboardInterrupt:
+            return -4, url
+
+        return 1, url
+
+    async def save(self, filename, response) -> bool:
+        if response is None:
+            logger.error('Error: Response is None')
+            return False
+        save_file_path = os.path.join(self.folder, filename)
+        with open(save_file_path, 'wb') as f:
+            if response is not None:
+                length = response.headers.get('content-length')
+                if length is None:
+                    f.write(response.content)
+                else:
+                    async for chunk in response.aiter_bytes(2048):
+                        f.write(chunk)
+        return True
+
+    def create_storage_object(self, folder:str):
+        if not os.path.exists(folder):
+            try:
+                os.makedirs(folder)
+            except EnvironmentError as e:
+                logger.critical(str(e))
+        self.folder:str = folder
+        self.close = lambda: None # Only available in class CompressedDownloader
+
+    def start_download(self, queue, folder='') -> bool:
+        if not isinstance(folder, (str,)):
+            folder = str(folder)
+
+        if self.path:
+            folder = os.path.join(self.path, folder)
+
+        logger.info(f'Doujinshi will be saved at "{folder}"')
+        self.create_storage_object(folder)
+
+        if os.getenv('DEBUG', None) == 'NODOWNLOAD':
+            # Assuming we want to continue with rest of process.
+            return True
+
+        digit_length = len(str(len(queue)))
+        logger.info(f'Total download pages: {len(queue)}')
+        coroutines = [
+            self._semaphore_download(url, filename=os.path.basename(urlparse(url).path), length=digit_length)
+            for url in queue
+        ]
+
+        # Prevent coroutines infection
+        asyncio.run(self.fiber(coroutines))
+
+        self.close()
+
+        return True
+
+class CompressedDownloader(Downloader):
+    def create_storage_object(self, folder):
+        filename = f'{folder}.zip'
+        print(filename)
+        self.zipfile = zipfile.ZipFile(filename,'w')
+        self.close = lambda: self.zipfile.close()
+
+    async def save(self, filename, response) -> bool:
+        if response is None:
+            logger.error('Error: Response is None')
+            return False
+
+        image_data = io.BytesIO()
+        length = response.headers.get('content-length')
+        if length is None:
+            content = await response.read()
+            image_data.write(content)
+        else:
+            async for chunk in response.aiter_bytes(2048):
+                image_data.write(chunk)
+
+        image_data.seek(0)
+        self.zipfile.writestr(filename, image_data.read())
+        return True

doujinshi_dl/core/logger.py

@@ -0,0 +1,179 @@
+#
+# Copyright (C) 2010-2012 Vinay Sajip. All rights reserved. Licensed under the new BSD license.
+#
+import logging
+import re
+import platform
+import sys
+
+
+if platform.system() == 'Windows':
+    import ctypes
+    import ctypes.wintypes
+
+    # Reference: https://gist.github.com/vsajip/758430
+    #            https://github.com/ipython/ipython/issues/4252
+    #            https://msdn.microsoft.com/en-us/library/windows/desktop/ms686047%28v=vs.85%29.aspx
+    ctypes.windll.kernel32.SetConsoleTextAttribute.argtypes = [ctypes.wintypes.HANDLE, ctypes.wintypes.WORD]
+    ctypes.windll.kernel32.SetConsoleTextAttribute.restype = ctypes.wintypes.BOOL
+
+
+class ColorizingStreamHandler(logging.StreamHandler):
+    # color names to indices
+    color_map = {
+        'black': 0,
+        'red': 1,
+        'green': 2,
+        'yellow': 3,
+        'blue': 4,
+        'magenta': 5,
+        'cyan': 6,
+        'white': 7,
+    }
+
+    # levels to (background, foreground, bold/intense)
+    level_map = {
+        logging.DEBUG: (None, 'blue', False),
+        logging.INFO: (None, 'white', False),
+        logging.WARNING: (None, 'yellow', False),
+        logging.ERROR: (None, 'red', False),
+        logging.CRITICAL: ('red', 'white', False)
+    }
+    csi = '\x1b['
+    reset = '\x1b[0m'
+    disable_coloring = False
+
+    @property
+    def is_tty(self):
+        isatty = getattr(self.stream, 'isatty', None)
+        return isatty and isatty() and not self.disable_coloring
+
+    def emit(self, record):
+        try:
+            message = self.format(record)
+            stream = self.stream
+
+            if not self.is_tty:
+                if message and message[0] == "\r":
+                    message = message[1:]
+                stream.write(message)
+            else:
+                self.output_colorized(message)
+            stream.write(getattr(self, 'terminator', '\n'))
+
+            self.flush()
+        except (KeyboardInterrupt, SystemExit):
+            raise
+        except IOError:
+            pass
+        except:
+            self.handleError(record)
+
+
+    if not platform.system() == 'Windows':
+        def output_colorized(self, message):
+            self.stream.write(message)
+    else:
+        ansi_esc = re.compile(r'\x1b\[((?:\d+)(?:;(?:\d+))*)m')
+
+        nt_color_map = {
+            0: 0x00,    # black
+            1: 0x04,    # red
+            2: 0x02,    # green
+            3: 0x06,    # yellow
+            4: 0x01,    # blue
+            5: 0x05,    # magenta
+            6: 0x03,    # cyan
+            7: 0x07,    # white
+        }
+
+        def output_colorized(self, message):
+            parts = self.ansi_esc.split(message)
+            write = self.stream.write
+            h = None
+            fd = getattr(self.stream, 'fileno', None)
+
+            if fd is not None:
+                fd = fd()
+
+                if fd in (1, 2): # stdout or stderr
+                    h = ctypes.windll.kernel32.GetStdHandle(-10 - fd)
+
+            while parts:
+                text = parts.pop(0)
+
+                if text:
+                    if sys.version_info < (3, 0, 0):
+                        write(text.encode('utf-8'))
+                    else:
+                        write(text)
+
+                if parts:
+                    params = parts.pop(0)
+
+                    if h is not None:
+                        params = [int(p) for p in params.split(';')]
+                        color = 0
+
+                        for p in params:
+                            if 40 <= p <= 47:
+                                color |= self.nt_color_map[p - 40] << 4
+                            elif 30 <= p <= 37:
+                                color |= self.nt_color_map[p - 30]
+                            elif p == 1:
+                                color |= 0x08 # foreground intensity on
+                            elif p == 0: # reset to default color
+                                color = 0x07
+                            else:
+                                pass # error condition ignored
+
+                        ctypes.windll.kernel32.SetConsoleTextAttribute(h, color)
+
+    def colorize(self, message, record):
+        if record.levelno in self.level_map and self.is_tty:
+            bg, fg, bold = self.level_map[record.levelno]
+            params = []
+
+            if bg in self.color_map:
+                params.append(str(self.color_map[bg] + 40))
+
+            if fg in self.color_map:
+                params.append(str(self.color_map[fg] + 30))
+
+            if bold:
+                params.append('1')
+
+            if params and message:
+                if message.lstrip() != message:
+                    prefix = re.search(r"\s+", message).group(0)
+                    message = message[len(prefix):]
+                else:
+                    prefix = ""
+
+                message = "%s%s" % (prefix, ''.join((self.csi, ';'.join(params),
+                                    'm', message, self.reset)))
+
+        return message
+
+    def format(self, record):
+        message = logging.StreamHandler.format(self, record)
+        return self.colorize(message, record)
+
+
+logging.addLevelName(16, "SUCCESS")
+logger = logging.getLogger('doujinshi_dl')
+LOGGER_HANDLER = ColorizingStreamHandler(sys.stdout)
+FORMATTER = logging.Formatter("\r[%(asctime)s] %(funcName)s: %(message)s", "%H:%M:%S")
+LOGGER_HANDLER.setFormatter(FORMATTER)
+LOGGER_HANDLER.level_map[logging.getLevelName("SUCCESS")] = (None, "green", False)
+logger.addHandler(LOGGER_HANDLER)
+logger.setLevel(logging.DEBUG)
+
+
+if __name__ == '__main__':
+    logger.log(16, 'doujinshi-dl')
+    logger.info('info')
+    logger.warning('warning')
+    logger.debug('debug')
+    logger.error('error')
+    logger.critical('critical')

doujinshi_dl/core/plugin.py

@@ -0,0 +1,77 @@
+# coding: utf-8
+from abc import ABC, abstractmethod
+from dataclasses import dataclass, field
+from typing import List, Dict, Any, Iterator, Tuple
+
+
+@dataclass
+class GalleryMeta:
+    id: str
+    name: str
+    pretty_name: str
+    img_id: str
+    ext: list
+    pages: int
+    info: Dict[str, Any] = field(default_factory=dict)
+    extra: Dict[str, Any] = field(default_factory=dict)  # plugin-private data
+
+    def to_dict(self) -> dict:
+        d = {
+            'id': self.id,
+            'name': self.name,
+            'pretty_name': self.pretty_name,
+            'img_id': self.img_id,
+            'ext': self.ext,
+            'pages': self.pages,
+        }
+        d.update(self.info)
+        d.update(self.extra)
+        return d
+
+
+class BaseParser(ABC):
+    @abstractmethod
+    def fetch(self, gallery_id: str) -> GalleryMeta: ...
+
+    @abstractmethod
+    def search(self, keyword: str, sorting: str = 'date', page=None, **kwargs) -> List[Dict]: ...
+
+    def favorites(self, page=None) -> List[Dict]:
+        return []
+
+    def configure(self, args): ...
+
+
+class BaseModel(ABC):
+    @abstractmethod
+    def iter_tasks(self) -> Iterator[Tuple[str, str]]: ...
+    # yields (url, filename) tuples
+
+
+class BaseSerializer(ABC):
+    @abstractmethod
+    def write_all(self, meta: GalleryMeta, output_dir: str): ...
+
+    def finalize(self, output_dir: str) -> None:
+        pass
+
+
+class BasePlugin(ABC):
+    name: str
+
+    @abstractmethod
+    def create_parser(self) -> BaseParser: ...
+
+    @abstractmethod
+    def create_model(self, meta: GalleryMeta, name_format: str = '[%i][%a][%t]') -> BaseModel: ...
+
+    @abstractmethod
+    def create_serializer(self) -> BaseSerializer: ...
+
+    def register_args(self, argparser): pass
+
+    def check_auth(self) -> None:
+        pass
+
+    def print_results(self, results) -> None:
+        pass

doujinshi_dl/core/registry.py

@@ -0,0 +1,28 @@
+# coding: utf-8
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from doujinshi_dl.core.plugin import BasePlugin
+
+
+def get_plugin(name: str) -> 'BasePlugin':
+    from importlib.metadata import entry_points
+    eps = entry_points(group='doujinshi_dl.plugins')
+    for ep in eps:
+        if ep.name == name:
+            return ep.load()
+    raise KeyError(
+        f"Plugin {name!r} not found. "
+        f"Install it with: pip install doujinshi-dl-{name}"
+    )
+
+
+def get_first_plugin() -> 'BasePlugin':
+    from importlib.metadata import entry_points
+    eps = list(entry_points(group='doujinshi_dl.plugins'))
+    if not eps:
+        raise RuntimeError(
+            "No doujinshi-dl plugin installed. "
+            "Install a plugin from PyPI, e.g.: pip install doujinshi-dl-<name>"
+        )
+    return eps[0].load()

doujinshi_dl/core/utils/__init__.py

@@ -0,0 +1,5 @@
+# coding: utf-8
+from doujinshi_dl.core.utils.db import Singleton, DB
+from doujinshi_dl.core.utils.fs import format_filename, generate_cbz, move_to_folder, parse_doujinshi_obj, EXTENSIONS
+from doujinshi_dl.core.utils.html import generate_html, generate_main_html
+from doujinshi_dl.core.utils.http import async_request

doujinshi_dl/core/utils/db.py

@@ -0,0 +1,50 @@
+# coding: utf-8
+"""DB and Singleton utilities."""
+import os
+import sqlite3
+
+
+class _Singleton(type):
+    """ A metaclass that creates a Singleton base class when called. """
+    _instances = {}
+
+    def __call__(cls, *args, **kwargs):
+        if cls not in cls._instances:
+            cls._instances[cls] = super(_Singleton, cls).__call__(*args, **kwargs)
+        return cls._instances[cls]
+
+
+class Singleton(_Singleton(str('SingletonMeta'), (object,), {})):
+    pass
+
+
+class DB(object):
+    conn = None
+    cur = None
+
+    def __enter__(self):
+        from doujinshi_dl.core import config
+        history_path = config.get(
+            'history_path',
+            os.path.expanduser('~/.doujinshi-dl/history.sqlite3'),
+        )
+        self.conn = sqlite3.connect(history_path)
+        self.cur = self.conn.cursor()
+        self.cur.execute('CREATE TABLE IF NOT EXISTS download_history (id text)')
+        self.conn.commit()
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.conn.close()
+
+    def clean_all(self):
+        self.cur.execute('DELETE FROM download_history WHERE 1')
+        self.conn.commit()
+
+    def add_one(self, data):
+        self.cur.execute('INSERT INTO download_history VALUES (?)', [data])
+        self.conn.commit()
+
+    def get_all(self):
+        data = self.cur.execute('SELECT id FROM download_history')
+        return [i[0] for i in data]

doujinshi_dl/core/utils/fs.py

@@ -0,0 +1,98 @@
+# coding: utf-8
+"""Filesystem utilities: filename formatting, CBZ generation, folder management."""
+import os
+import zipfile
+import shutil
+from typing import Tuple
+
+from doujinshi_dl.core.logger import logger
+from doujinshi_dl.constant import PATH_SEPARATOR
+
+MAX_FIELD_LENGTH = 100
+EXTENSIONS = ('.png', '.jpg', '.jpeg', '.gif', '.webp')
+
+
+def format_filename(s, length=MAX_FIELD_LENGTH, _truncate_only=False):
+    """
+    It used to be a whitelist approach allowed only alphabet and a part of symbols.
+    but most doujinshi's names include Japanese 2-byte characters and these was rejected.
+    so it is using blacklist approach now.
+    if filename include forbidden characters ('/:,;*?"<>|) ,it replaces space character(" ").
+    """
+    if not _truncate_only:
+        ban_chars = '\\\'/:,;*?"<>|\t\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b'
+        filename = s.translate(str.maketrans(ban_chars, ' ' * len(ban_chars))).strip()
+        filename = ' '.join(filename.split())
+
+        while filename.endswith('.'):
+            filename = filename[:-1]
+    else:
+        filename = s
+
+    # limit `length` chars
+    if len(filename) >= length:
+        filename = filename[:length - 1] + u'…'
+
+    # Remove [] from filename
+    filename = filename.replace('[]', '').strip()
+    return filename
+
+
+def parse_doujinshi_obj(
+        output_dir: str,
+        doujinshi_obj=None,
+        file_type: str = ''
+) -> Tuple[str, str]:
+    filename = f'.{PATH_SEPARATOR}doujinshi.{file_type}'
+    if doujinshi_obj is not None:
+        doujinshi_dir = os.path.join(output_dir, doujinshi_obj.filename)
+        _filename = f'{doujinshi_obj.filename}.{file_type}'
+
+        if file_type == 'pdf':
+            _filename = _filename.replace('/', '-')
+
+        filename = os.path.join(output_dir, _filename)
+    else:
+        if file_type == 'html':
+            return output_dir, 'index.html'
+
+        doujinshi_dir = f'.{PATH_SEPARATOR}'
+
+    if not os.path.exists(doujinshi_dir):
+        os.makedirs(doujinshi_dir)
+
+    return doujinshi_dir, filename
+
+
+def generate_cbz(doujinshi_dir, filename):
+    file_list = os.listdir(doujinshi_dir)
+    file_list.sort()
+
+    logger.info(f'Writing CBZ file to path: {filename}')
+    with zipfile.ZipFile(filename, 'w') as cbz_pf:
+        for image in file_list:
+            image_path = os.path.join(doujinshi_dir, image)
+            cbz_pf.write(image_path, image)
+
+    logger.log(16, f'Comic Book CBZ file has been written to "{filename}"')
+
+
+def move_to_folder(output_dir='.', doujinshi_obj=None, file_type=None):
+    if not file_type:
+        raise RuntimeError('no file_type specified')
+
+    doujinshi_dir, filename = parse_doujinshi_obj(output_dir, doujinshi_obj, file_type)
+
+    for fn in os.listdir(doujinshi_dir):
+        file_path = os.path.join(doujinshi_dir, fn)
+        _, ext = os.path.splitext(file_path)
+        if ext in ['.pdf', '.cbz']:
+            continue
+
+        if os.path.isfile(file_path):
+            try:
+                os.remove(file_path)
+            except Exception as e:
+                print(f"Error deleting file: {e}")
+
+    shutil.move(filename, os.path.join(doujinshi_dir, os.path.basename(filename)))

doujinshi_dl/core/utils/html.py

@@ -0,0 +1,118 @@
+# coding: utf-8
+"""HTML viewer generation utilities (generic, no site-specific references)."""
+import json
+import os
+import urllib.parse
+
+from doujinshi_dl.core.logger import logger
+from doujinshi_dl.core.utils.fs import EXTENSIONS, parse_doujinshi_obj
+from doujinshi_dl.constant import PATH_SEPARATOR
+
+
+def _readfile(path):
+    loc = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))  # doujinshi_dl/
+
+    with open(os.path.join(loc, path), 'r') as file:
+        return file.read()
+
+
+def generate_html(output_dir='.', doujinshi_obj=None, template='default'):
+    doujinshi_dir, filename = parse_doujinshi_obj(output_dir, doujinshi_obj, 'html')
+    image_html = ''
+
+    if not os.path.exists(doujinshi_dir):
+        logger.warning(f'Path "{doujinshi_dir}" does not exist, creating.')
+        try:
+            os.makedirs(doujinshi_dir)
+        except EnvironmentError as e:
+            logger.critical(e)
+
+    file_list = os.listdir(doujinshi_dir)
+    file_list.sort()
+
+    for image in file_list:
+        if not os.path.splitext(image)[1] in EXTENSIONS:
+            continue
+        image_html += f'<img src="{image}" class="image-item"/>\n'
+
+    html = _readfile(f'viewer/{template}/index.html')
+    css = _readfile(f'viewer/{template}/styles.css')
+    js = _readfile(f'viewer/{template}/scripts.js')
+
+    if doujinshi_obj is not None:
+        name = doujinshi_obj.name
+    else:
+        metadata_path = os.path.join(doujinshi_dir, "metadata.json")
+        if os.path.exists(metadata_path):
+            with open(metadata_path, 'r') as file:
+                doujinshi_info = json.loads(file.read())
+            name = doujinshi_info.get("title")
+        else:
+            name = 'Doujinshi HTML Viewer'
+
+    data = html.format(TITLE=name, IMAGES=image_html, SCRIPTS=js, STYLES=css)
+    try:
+        with open(os.path.join(doujinshi_dir, 'index.html'), 'wb') as f:
+            f.write(data.encode('utf-8'))
+
+        logger.log(16, f'HTML Viewer has been written to "{os.path.join(doujinshi_dir, "index.html")}"')
+    except Exception as e:
+        logger.warning(f'Writing HTML Viewer failed ({e})')
+
+
+def generate_main_html(output_dir=f'.{PATH_SEPARATOR}'):
+    """
+    Generate a main html to show all the contained doujinshi.
+    With a link to their `index.html`.
+    Default output folder will be the CLI path.
+    """
+    import shutil
+
+    image_html = ''
+
+    main = _readfile('viewer/main.html')
+    css = _readfile('viewer/main.css')
+    js = _readfile('viewer/main.js')
+
+    element = '\n\
+            <div class="gallery-favorite">\n\
+                <div class="gallery">\n\
+                    <a href="./{FOLDER}/index.html" class="cover" style="padding:0 0 141.6% 0"><img\n\
+                            src="./{FOLDER}/{IMAGE}" />\n\
+                        <div class="caption">{TITLE}</div>\n\
+                    </a>\n\
+                </div>\n\
+            </div>\n'
+
+    os.chdir(output_dir)
+    doujinshi_dirs = next(os.walk('.'))[1]
+
+    for folder in doujinshi_dirs:
+        files = os.listdir(folder)
+        files.sort()
+
+        if 'index.html' in files:
+            logger.info(f'Add doujinshi "{folder}"')
+        else:
+            continue
+
+        image = files[0]  # 001.jpg or 001.png
+        if folder is not None:
+            title = folder.replace('_', ' ')
+        else:
+            title = 'Doujinshi HTML Viewer'
+
+        image_html += element.format(FOLDER=urllib.parse.quote(folder), IMAGE=image, TITLE=title)
+    if image_html == '':
+        logger.warning('No index.html found, --gen-main paused.')
+        return
+    try:
+        data = main.format(STYLES=css, SCRIPTS=js, PICTURE=image_html)
+        with open('./main.html', 'wb') as f:
+            f.write(data.encode('utf-8'))
+        pkg_dir = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+        shutil.copy(os.path.join(pkg_dir, 'viewer/logo.png'), './')
+        output_dir = output_dir[:-1] if output_dir.endswith('/') else output_dir
+        logger.log(16, f'Main Viewer has been written to "{output_dir}/main.html"')
+    except Exception as e:
+        logger.warning(f'Writing Main Viewer failed ({e})')

doujinshi_dl/core/utils/http.py

@@ -0,0 +1,34 @@
+# coding: utf-8
+"""Generic async HTTP request helper (no site-specific headers injected here)."""
+import httpx
+import urllib3.exceptions
+
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+
+async def async_request(method, url, proxy=None, **kwargs):
+    """
+    Thin async HTTP client wrapper.
+
+    Header injection (Cookie, User-Agent, Referer) is done by callers that
+    have access to site-specific configuration; this helper stays generic.
+    """
+    from doujinshi_dl import constant
+
+    headers = kwargs.pop('headers', {})
+
+    if proxy is None:
+        proxy = constant.CONFIG.get('proxy', '')
+
+    if isinstance(proxy, str) and not proxy:
+        proxy = None
+
+    # Remove 'timeout' from kwargs to avoid duplicate keyword argument since
+    # httpx.AsyncClient accepts it as a constructor arg or request arg.
+    timeout = kwargs.pop('timeout', 30)
+
+    async with httpx.AsyncClient(headers=headers, verify=False, proxy=proxy,
+                                 timeout=timeout) as client:
+        response = await client.request(method, url, **kwargs)
+
+    return response

doujinshi_dl/downloader.py

@@ -0,0 +1,5 @@
+# coding: utf-8
+# Compatibility shim — re-exports from new location.
+# Preserves backward compatibility for: from doujinshi_dl.downloader import Downloader, CompressedDownloader
+from doujinshi_dl.core.downloader import *  # noqa: F401, F403
+from doujinshi_dl.core.downloader import Downloader, CompressedDownloader, download_callback  # noqa: F401

doujinshi_dl/logger.py

@@ -0,0 +1,5 @@
+# coding: utf-8
+# Compatibility shim — re-exports from new location.
+# Preserves backward compatibility for: from doujinshi_dl.logger import logger
+from doujinshi_dl.core.logger import *  # noqa: F401, F403
+from doujinshi_dl.core.logger import logger  # noqa: F401

doujinshi_dl/utils.py

@@ -0,0 +1,77 @@
+# coding: utf-8
+# Utility helpers for the main package.
+# No plugin-specific imports.
+
+# Generic filesystem / HTML utilities
+from doujinshi_dl.core.utils.fs import (  # noqa: F401
+    format_filename, parse_doujinshi_obj, generate_cbz, move_to_folder,
+    EXTENSIONS, MAX_FIELD_LENGTH,
+)
+from doujinshi_dl.core.utils.html import generate_html, generate_main_html  # noqa: F401
+from doujinshi_dl.core.utils.db import Singleton, DB  # noqa: F401
+
+# Signal handler and paging helper (kept inline — they have no site-specific code)
+import sys
+from doujinshi_dl.core.logger import logger  # noqa: F401
+
+
+def signal_handler(_signal, _frame):
+    logger.error('Ctrl-C signal received. Stopping...')
+    sys.exit(1)
+
+
+def paging(page_string):
+    # 1,3-5,14 -> [1, 3, 4, 5, 14]
+    if not page_string:
+        return [1]
+
+    page_list = []
+    for i in page_string.split(','):
+        if '-' in i:
+            start, end = i.split('-')
+            if not (start.isdigit() and end.isdigit()):
+                raise Exception('Invalid page number')
+            page_list.extend(list(range(int(start), int(end) + 1)))
+        else:
+            if not i.isdigit():
+                raise Exception('Invalid page number')
+            page_list.append(int(i))
+
+    return page_list
+
+
+def generate_doc(file_type='', output_dir='.', doujinshi_obj=None, regenerate=False):
+    """Generate a CBZ or PDF document from a downloaded doujinshi directory.
+
+    For CBZ, any metadata files (ComicInfo.xml, etc.) should be written to the
+    directory *before* calling this function.
+    """
+    import os
+
+    doujinshi_dir, filename = parse_doujinshi_obj(output_dir, doujinshi_obj, file_type)
+
+    if os.path.exists(f'{doujinshi_dir}.{file_type}') and not regenerate:
+        logger.info(f'Skipped {file_type} file generation: {doujinshi_dir}.{file_type} already exists')
+        return
+
+    if file_type == 'cbz':
+        generate_cbz(doujinshi_dir, filename)
+
+    elif file_type == 'pdf':
+        try:
+            import img2pdf
+
+            file_list = [f for f in os.listdir(doujinshi_dir) if f.lower().endswith(EXTENSIONS)]
+            file_list.sort()
+
+            logger.info(f'Writing PDF file to path: {filename}')
+            with open(filename, 'wb') as pdf_f:
+                full_path_list = [os.path.join(doujinshi_dir, image) for image in file_list]
+                pdf_f.write(img2pdf.convert(full_path_list, rotation=img2pdf.Rotation.ifvalid))
+
+            logger.log(16, f'PDF file has been written to "{filename}"')
+
+        except ImportError:
+            logger.error("Please install img2pdf package by using pip.")
+    else:
+        raise ValueError('invalid file type')

doujinshi_dl/viewer/default/index.html

@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes, viewport-fit=cover" />
+    <title>{TITLE}</title>
+    <style>
+{STYLES}
+    </style>
+</head>
+<body>
+
+<nav id="list">
+{IMAGES}</nav>
+
+<div id="image-container">
+    <span id="page-num"></span>
+    <div id="dest"></div>
+</div>
+
+<script>
+{SCRIPTS}
+</script>
+</body>
+</html>

doujinshi_dl/viewer/default/scripts.js

@@ -0,0 +1,87 @@
+const pages = Array.from(document.querySelectorAll('img.image-item'));
+let currentPage = 0;
+
+function changePage(pageNum) {
+    const previous = pages[currentPage];
+    const current = pages[pageNum];
+
+    if (current == null) {
+        return;
+    }
+    
+    previous.classList.remove('current');
+    current.classList.add('current');
+
+    currentPage = pageNum;
+
+    const display = document.getElementById('dest');
+    display.style.backgroundImage = `url("${current.src}")`;
+
+    scroll(0,0)
+
+    document.getElementById('page-num')
+        .innerText = [
+                (pageNum + 1).toLocaleString(),
+                pages.length.toLocaleString()
+            ].join('\u200a/\u200a');
+}
+
+changePage(0);
+
+document.getElementById('list').onclick = event => {
+    if (pages.includes(event.target)) {
+        changePage(pages.indexOf(event.target));
+    }
+};
+
+document.getElementById('image-container').onclick = event => {
+    const width = document.getElementById('image-container').clientWidth;
+    const clickPos = event.clientX / width;
+
+    if (clickPos < 0.5) {
+        changePage(currentPage - 1);
+    } else {
+        changePage(currentPage + 1);
+    }
+};
+
+document.onkeypress = event => {
+    switch (event.key.toLowerCase()) {
+        // Previous Image
+        case 'w':
+            scrollBy(0, -40);
+            break;
+        case 'a':
+            changePage(currentPage - 1);
+            break;
+        // Return to previous page
+        case 'q':
+            window.history.go(-1);
+            break;
+        // Next Image
+        case ' ':
+        case 's':
+            scrollBy(0, 40);
+            break;
+        case 'd':
+            changePage(currentPage + 1);
+            break;
+    }// remove arrow cause it won't work
+};
+
+document.onkeydown = event =>{
+    switch (event.keyCode) {
+        case 37: //left
+            changePage(currentPage - 1);
+            break;
+        case 38: //up
+            changePage(currentPage - 1);
+            break;
+        case 39: //right
+            changePage(currentPage + 1);
+            break;
+        case 40: //down
+            changePage(currentPage + 1);
+            break;
+    }
+};

doujinshi_dl/viewer/default/styles.css

@@ -0,0 +1,70 @@
+  
+*, *::after, *::before {
+    box-sizing: border-box;
+}
+
+img {
+    vertical-align: middle;
+}
+
+html, body {
+    display: flex;
+    background-color: #e8e6e6;
+    height: 100%;
+    width: 100%;
+    padding: 0;
+    margin: 0;
+    font-family: sans-serif;
+}
+
+#list {
+    height: 2000px;
+    overflow: scroll;
+    width: 260px;
+    text-align: center;
+}
+
+#list img {
+    width: 200px;
+    padding: 10px;
+    border-radius: 10px;
+    margin: 15px 0;
+    cursor: pointer;
+}
+
+#list img.current {
+    background: #0003;
+}
+
+#image-container {
+    flex: auto;
+    height: 2000px;
+    background: #222;
+    color: #fff;
+    text-align: center;
+    cursor: pointer;
+    -webkit-user-select: none;
+    user-select: none;
+    position: relative;
+}
+
+#image-container #dest {
+    height: 2000px;
+    width: 100%;
+    background-size: contain;
+    background-repeat: no-repeat;
+    background-position: top;
+}
+
+#image-container #page-num {
+    position: static;
+    font-size: 14pt;
+    left: 10px;
+    bottom: 5px;
+    font-weight: bold;
+    opacity: 0.75;
+    text-shadow: /* Duplicate the same shadow to make it very strong */
+        0 0 2px #222,
+        0 0 2px #222,
+        0 0 2px #222;
+}

doujinshi_dl/viewer/main.css

@@ -0,0 +1,331 @@
+/*! normalize.css v5.0.0 | MIT License | github.com/necolas/normalize.css */
+a {
+    background-color: transparent;
+    -webkit-text-decoration-skip: objects
+}
+
+img {
+    border-style: none
+}
+
+html {
+    box-sizing: border-box
+}
+
+*,:after,:before {
+    box-sizing: inherit
+}
+
+body,html {
+    font-family: 'Noto Sans',sans-serif;
+    font-size: 14px;
+    line-height: 1.42857143;
+    height: 100%;
+    margin: 0;
+    text-align: center;
+    color: #34495e;
+    background-color: #fff;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale
+}
+
+a {
+    text-decoration: none;
+    color: #34495e
+}
+
+blockquote {
+    border: 0
+}
+
+.container {
+    display: block;
+    clear: both;
+    margin-left: 15rem;
+    margin-right: 0.5rem;
+    margin-bottom: 5px;
+    margin-top: 5px;
+    padding: 4px;
+    border-radius: 9px;
+    background-color: #ecf0f1;
+    width: 100% - 15rem;
+    max-width: 1500px
+}
+
+.gallery,.gallery-favorite,.thumb-container {
+    display: inline-block;
+    vertical-align: top
+}
+
+.gallery img,.gallery-favorite img,.thumb-container img {
+    display: block;
+    max-width: 100%;
+    height: auto
+}
+
+@media screen and (min-width: 980px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:19%;
+        margin: 3px;
+    }
+}
+
+@media screen and (max-width: 979px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:24%;
+        margin: 2px
+    }
+}
+
+@media screen and (max-width: 772px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:32%;
+        margin: 1.5px
+    }
+}
+
+@media screen and (max-width: 500px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:49%;
+        margin: .5px
+    }
+}
+
+.gallery a,.gallery-favorite a {
+    display: block
+}
+
+.gallery a img,.gallery-favorite a img {
+    position: absolute
+}
+
+.caption {
+    line-height: 15px;
+    left: 0;
+    right: 0;
+    top: 100%;
+    position: absolute;
+    z-index: 10;
+    overflow: hidden;
+    width: 100%;
+    max-height: 34px;
+    padding: 3px;
+    background-color: #fff;
+    font-weight: 700;
+    display: block;
+    text-align: center;
+    text-decoration: none;
+    color: #34495e
+}
+
+.gallery {
+    position: relative;
+    margin-bottom: 3em
+}
+
+.gallery:hover .caption {
+    max-height: 100%;
+    box-shadow: 0 10px 20px rgba(100,100,100,.5)
+}
+
+.gallery-favorite .gallery {
+    width: 100%
+}
+
+.sidenav {
+  height: 100%;
+  width: 15rem;
+  position: fixed;
+  z-index: 1;
+  top: 0;
+  left: 0;
+  background-color: #0d0d0d;
+  overflow: hidden;
+
+  padding-top: 20px;
+  -webkit-touch-callout: none; /* iOS Safari */
+  -webkit-user-select: none; /* Safari */
+  -khtml-user-select: none; /* Konqueror HTML */
+  -moz-user-select: none; /* Old versions of Firefox */
+  -ms-user-select: none; /* Internet Explorer/Edge */
+  user-select: none;
+}
+
+.sidenav a {
+  background-color: #eee;
+  padding: 5px 0px 5px 15px;
+  text-decoration: none;
+  font-size: 15px;
+  color: #0d0d0d;
+  display: block;
+  text-align: left;
+}
+.sidenav img {
+	width:100%;
+	padding: 0px 5px 0px 5px;
+
+}
+
+.sidenav h1 {
+    font-size: 1.5em;
+	margin: 0px 0px 10px;
+}
+
+.sidenav a:hover {
+  color: white;
+  background-color: #EC2754;
+}
+
+.accordion {
+  font-weight: bold;
+  background-color: #eee;
+  color: #444;
+  padding: 10px 0px 5px 8px;
+  width: 100%;
+  border: none;
+  text-align: left;
+  outline: none;
+  font-size: 15px;
+  transition: 0.4s;
+  cursor:pointer;
+}
+
+.accordion:hover {
+  background-color: #ddd;
+}
+
+.accordion.active{
+  background-color:#ddd;
+}
+
+.nav-btn {
+  font-weight: bold;
+  background-color: #eee;
+  color: #444;
+  padding: 8px 8px 5px 9px;
+  width: 100%;
+  border: none;
+  text-align: left;
+  outline: none;
+  font-size: 15px;
+}
+
+.hidden {
+  display:none;
+}
+
+.nav-btn a{
+  font-weight: normal;
+  padding-right: 10px;
+  border-radius: 15px;
+  cursor: crosshair
+}
+
+.options {
+  display:block;
+  padding: 0px 0px 0px 0px;
+  background-color: #eee;
+  max-height: 0;
+  overflow: hidden;
+  transition: max-height 0.2s ease-out;
+  cursor:pointer;
+}
+
+.search{
+  background-color: #eee;
+  padding-right:40px;
+  white-space: nowrap;
+  padding-top: 5px;
+  height:43px;
+
+}
+
+.search input{
+  border-top-right-radius:10px;
+  padding-top:0;
+  padding-bottom:0;
+  font-size:1em;
+  width:100%;
+  height:38px;
+  vertical-align:top;
+}
+
+.btn{
+  border-top-left-radius:10px;
+  color:#fff;
+  font-size:100%;
+  padding: 8px;
+  width:38px;
+  background-color:#ed2553;
+}
+
+#tags{
+    text-align:left;
+    display: flex;
+	width:15rem;
+    justify-content: start;
+	margin: 2px 2px 2px 0px;
+	flex-wrap: wrap;
+}
+
+.btn-2{
+  font-weight:700;
+  padding-right:0.5rem;
+  padding-left:0.5rem;
+  color:#fff;
+  border:0;
+  font-size:100%;
+  height:1.25rem;
+  outline: 0;
+  border-radius: 0.3rem;
+  cursor: pointer;
+  margin:0.15rem;
+  transition: all 1s linear;
+}
+
+.btn-2#parody{
+  background-color: red;
+}
+
+.btn-2#character{
+  background-color: blue;
+}
+
+.btn-2#tag{
+  background-color: green;
+}
+
+.btn-2#artist{
+  background-color: fuchsia;
+}
+
+.btn-2#group{
+  background-color: teal;
+}
+
+.btn-2.hover{
+  filter: saturate(20%)
+}
+
+input,input:focus{
+  border:none;
+  outline:0;
+}
+
+html.theme-black,html.theme-black body {
+    color: #d9d9d9;
+    background-color: #0d0d0d
+}
+
+html.theme-black #thumbnail-container,html.theme-black .container {
+    background-color: #1f1f1f
+}
+
+html.theme-black .gallery:hover .caption {
+    box-shadow: 0 10px 20px rgba(0,0,0,.5)
+}
+
+html.theme-black .caption {
+    background-color: #404040;
+    color: #d9d9d9
+}

doujinshi_dl/viewer/main.html

@@ -0,0 +1,51 @@
+<!doctype html>
+<html lang="en" class=" theme-black">
+
+<head>
+    <meta charset="utf-8" />
+    <meta name="theme-color" content="#1f1f1f" />
+    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes, viewport-fit=cover" />
+    <title>Doujinshi Viewer</title>
+    <script type="text/javascript" src="data.js"></script>
+        <!-- <link rel="stylesheet" href="./main.css"> -->
+<style>
+{STYLES}
+</style>
+</head>
+
+<body>
+    <div id="content">
+        <nav class="sidenav">
+			<img src="logo.png">
+			<h1>Doujinshi Viewer</h1>
+                        <button class="accordion">Language</button>
+            <div class="options" id="language">
+                    <a>English</a>
+                    <a>Japanese</a>
+                    <a>Chinese</a>
+            </div>
+			<button class="accordion">Category</button>
+            <div class="options" id ="category">
+                    <a>Doujinshi</a>
+                    <a>Manga</a>
+            </div>
+			<button class="nav-btn hidden">Filters</button>
+			<div class="search">
+				<input autocomplete="off" type="search" id="tagfilter" name="q" value="" autocapitalize="none" required="">
+				<svg class="btn" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="white" d="M505 442.7L405.3 343c-4.5-4.5-10.6-7-17-7H372c27.6-35.3 44-79.7 44-128C416 93.1 322.9 0 208 0S0 93.1 0 208s93.1 208 208 208c48.3 0 92.7-16.4 128-44v16.3c0 6.4 2.5 12.5 7 17l99.7 99.7c9.4 9.4 24.6 9.4 33.9 0l28.3-28.3c9.4-9.4 9.4-24.6.1-34zM208 336c-70.7 0-128-57.2-128-128 0-70.7 57.2-128 128-128 70.7 0 128 57.2 128 128 0 70.7-57.2 128-128 128z"/></svg>
+			<div id="tags">
+			</div>
+		</nav>
+        <div class="container" id="favcontainer">
+
+            {PICTURE}
+
+        </div> <!-- container -->
+
+    </div>
+<script>
+    {SCRIPTS}
+</script>
+</body>
+
+</html>

doujinshi_dl/viewer/main.js

@@ -0,0 +1,177 @@
+    //------------------------------------navbar script------------------------------------
+var menu = document.getElementsByClassName("accordion");
+for (var i = 0; i < menu.length; i++) {
+  menu[i].addEventListener("click", function() {
+    var panel = this.nextElementSibling;
+    if (panel.style.maxHeight) {
+	  this.classList.toggle("active");
+      panel.style.maxHeight = null;
+    } else {
+      panel.style.maxHeight = panel.scrollHeight + "px";
+	  this.classList.toggle("active");
+    }
+  });
+}
+var language = document.getElementById("language").children;
+for (var i = 0; i < language.length; i++){
+	language[i].addEventListener("click", function() {
+		toggler = document.getElementById("language")
+		toggler.style.maxHeight = null;
+		document.getElementsByClassName("accordion")[0].classList.toggle("active");
+		filter_maker(this.innerText, "language");
+});
+}
+var category = document.getElementById("category").children;
+for (var i = 0; i < category.length; i++){
+	category[i].addEventListener("click", function() {
+		document.getElementById("category").style.maxHeight = null;
+		document.getElementsByClassName("accordion")[1].classList.toggle("active");
+		filter_maker(this.innerText, "category");
+});
+}
+//-----------------------------------------------------------------------------------
+//----------------------------------Tags Script--------------------------------------
+tag_maker(tags);
+
+var tag = document.getElementsByClassName("btn-2");
+for (var i = 0; i < tag.length; i++){
+	tag[i].addEventListener("click", function() {
+	filter_maker(this.innerText, this.id);
+});
+}
+
+var input = document.getElementById("tagfilter");
+input.addEventListener("input", function() {
+	var tags = document.querySelectorAll(".btn-2");
+	if (this.value.length > 0) {
+        for (var i = 0; i < tags.length; i++) {
+            var tag = tags[i];
+            var nome = tag.innerText;
+            var exp = new RegExp(this.value, "i");;
+            if (exp.test(nome)) {
+                tag.classList.remove("hidden");
+		    }
+			else {
+				tag.classList.add("hidden");
+            }
+        }
+    } else {
+        for (var i = 0; i < tags.length; i++) {
+            var tag = tags[i];
+				tag.classList.add('hidden');
+        }
+    }
+});
+input.addEventListener('keypress', function (e) {
+	enter_search(e, this.value);
+});
+//-----------------------------------------------------------------------------------
+//------------------------------------Functions--------------------------------------
+function enter_search(e, input){
+	var count = 0;
+	var key = e.which || e.keyCode;
+	if (key === 13 && input.length > 0) {
+	  var all_tags = document.getElementById("tags").children;
+	  for(i = 0; i < all_tags.length; i++){
+		if (!all_tags[i].classList.contains("hidden")){
+			count++;
+			var tag_name = all_tags[i].innerText;
+			var tag_id   = all_tags[i].id;
+			if (count>1){break}
+		}
+	  }
+	  if (count == 1){
+		filter_maker(tag_name, tag_id);
+	  }
+	}
+}
+function filter_maker(text, class_value){
+    var check = filter_checker(text);
+	var nav_btn = document.getElementsByClassName("nav-btn")[0];
+	if (nav_btn.classList.contains("hidden")){
+	  nav_btn.classList.toggle("hidden");
+	}
+	if (check == true){
+		var node = document.createElement("a");
+		var textnode = document.createTextNode(text);
+		node.appendChild(textnode);
+		node.classList.add(class_value);
+		nav_btn.appendChild(node);
+		filter_searcher();
+	}
+}
+
+function filter_searcher(){
+	var verifier = null;
+	var tags_filter = [];
+	var doujinshi_id = [];
+	var filter_tag = document.getElementsByClassName("nav-btn")[0].children;
+	filter_tag[filter_tag.length-1].addEventListener("click", function() {
+		this.remove();
+		try{
+			filter_searcher();
+		}
+		catch{
+			var gallery = document.getElementsByClassName("gallery-favorite");
+			for (var i = 0; i < gallery.length; i++){
+				gallery[i].classList.remove("hidden");
+			}
+		}
+	});
+	for (var i=0; i < filter_tag.length; i++){
+		var fclass = filter_tag[i].className;
+		var fname = filter_tag[i].innerText.toLowerCase();
+		tags_filter.push([fclass, fname])
+	}
+	for (var i=0; i < data.length; i++){
+		for (var j=0; j < tags_filter.length; j++){
+			try{
+				if(data[i][tags_filter[j][0]].includes(tags_filter[j][1])){
+					verifier = true;
+				}
+				else{
+					verifier = false;
+					break
+				}
+			}
+			catch{
+				verifier = false;
+					break
+			}
+		}
+		if (verifier){doujinshi_id.push(data[i].Folder.replace("_", " "));}
+	}
+	var gallery = document.getElementsByClassName("gallery-favorite");
+	for (var i = 0; i < gallery.length; i++){
+		gtext = gallery	[i].children[0].children[0].children[1].innerText;
+		if(doujinshi_id.includes(gtext)){
+			gallery[i].classList.remove("hidden");
+		}
+		else{
+		gallery[i].classList.add("hidden");
+		}
+	}
+}
+
+function filter_checker(text){
+    var filter_tags = document.getElementsByClassName("nav-btn")[0].children;
+	if (filter_tags == null){return true;}
+	for (var i=0; i < filter_tags.length; i++){
+		if (filter_tags[i].innerText == text){return false;}
+	}
+	return true;
+}
+
+function tag_maker(data){
+	for (i in data){
+		for (j in data[i]){
+			var node = document.createElement("button");
+			var textnode = document.createTextNode(data[i][j]);
+			node.appendChild(textnode);
+			node.classList.add("btn-2");
+			node.setAttribute('id', i);
+			node.classList.add("hidden");
+			document.getElementById("tags").appendChild(node);
+		}
+	}
+}

doujinshi_dl/viewer/minimal/index.html

@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes, viewport-fit=cover" />
+    <title>{TITLE}</title>
+    <style>
+{STYLES}
+    </style>
+</head>
+<body>
+
+<nav id="list" hidden=true>
+{IMAGES}</nav>
+
+<div id="image-container">
+    <div id="dest"></div>
+    <span id="page-num"></span>
+</div>
+
+<script>
+{SCRIPTS}
+</script>
+</body>
+</html>

doujinshi_dl/viewer/minimal/scripts.js

@@ -0,0 +1,79 @@
+const pages = Array.from(document.querySelectorAll('img.image-item'));
+let currentPage = 0;
+
+function changePage(pageNum) {
+    const previous = pages[currentPage];
+    const current = pages[pageNum];
+
+    if (current == null) {
+        return;
+    }
+    
+    previous.classList.remove('current');
+    current.classList.add('current');
+
+    currentPage = pageNum;
+
+    const display = document.getElementById('dest');
+    display.style.backgroundImage = `url("${current.src}")`;
+
+    scroll(0,0)
+
+    document.getElementById('page-num')
+        .innerText = [
+                (pageNum + 1).toLocaleString(),
+                pages.length.toLocaleString()
+            ].join('\u200a/\u200a');
+}
+
+changePage(0);
+
+document.getElementById('image-container').onclick = event => {
+    const width = document.getElementById('image-container').clientWidth;
+    const clickPos = event.clientX / width;
+
+    if (clickPos < 0.5) {
+        changePage(currentPage - 1);
+    } else {
+        changePage(currentPage + 1);
+    }
+};
+
+document.onkeypress = event => {
+    switch (event.key.toLowerCase()) {
+        // Previous Image
+        case 'w':
+	   scrollBy(0, -40);
+	   break;
+        case 'a':
+            changePage(currentPage - 1);
+            break;
+        // Return to previous page
+        case 'q':
+            window.history.go(-1);
+            break;
+        // Next Image
+        case ' ':
+        case 's':
+	    scrollBy(0, 40);
+            break;
+        case 'd':
+            changePage(currentPage + 1);
+            break;
+    }// remove arrow cause it won't work
+};
+
+document.onkeydown = event =>{
+    switch (event.keyCode) {
+        case 37: //left
+            changePage(currentPage - 1);
+            break;
+        case 38: //up
+            break;
+        case 39: //right
+            changePage(currentPage + 1);
+            break;
+        case 40: //down
+            break;
+    }
+};

doujinshi_dl/viewer/minimal/styles.css

@@ -0,0 +1,75 @@
+  
+*, *::after, *::before {
+    box-sizing: border-box;
+}
+
+img {
+    vertical-align: middle;
+}
+
+html, body {
+    display: flex;
+    background-color: #e8e6e6;
+    height: 100%;
+    width: 100%;
+    padding: 0;
+    margin: 0;
+    font-family: sans-serif;
+}
+
+#list {
+    height: 2000px;
+    overflow: scroll;
+    width: 260px;
+    text-align: center;
+}
+
+#list img {
+    width: 200px;
+    padding: 10px;
+    border-radius: 10px;
+    margin: 15px 0;
+    cursor: pointer;
+}
+
+#list img.current {
+    background: #0003;
+}
+
+#image-container {
+    flex: auto;
+    height: 100%;
+    background: rgb(0, 0, 0);
+    color: rgb(100, 100, 100);
+    text-align: center;
+    cursor: pointer;
+    -webkit-user-select: none;
+    user-select: none;
+    position: relative;
+}
+
+#image-container #dest {
+    height: 2000px;
+    width: 100%;
+    background-size: contain;
+    background-repeat: no-repeat;
+    background-position: top;
+    margin-left: auto;
+    margin-right: auto;
+    max-width: 100%;
+    max-height: 100vh;
+    margin: auto;
+}
+
+#image-container #page-num {
+    position: static;
+    font-size: 9pt;
+    left: 10px;
+    bottom: 5px;
+    font-weight: bold;
+    opacity: 0.9;
+    text-shadow: /* Duplicate the same shadow to make it very strong */
+        0 0 2px #222,
+        0 0 2px #222,
+        0 0 2px #222;
+}

doujinshi_dl/viewer/viewer/default/index.html

@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes, viewport-fit=cover" />
+    <title>{TITLE}</title>
+    <style>
+{STYLES}
+    </style>
+</head>
+<body>
+
+<nav id="list">
+{IMAGES}</nav>
+
+<div id="image-container">
+    <span id="page-num"></span>
+    <div id="dest"></div>
+</div>
+
+<script>
+{SCRIPTS}
+</script>
+</body>
+</html>

doujinshi_dl/viewer/viewer/default/scripts.js

@@ -0,0 +1,87 @@
+const pages = Array.from(document.querySelectorAll('img.image-item'));
+let currentPage = 0;
+
+function changePage(pageNum) {
+    const previous = pages[currentPage];
+    const current = pages[pageNum];
+
+    if (current == null) {
+        return;
+    }
+    
+    previous.classList.remove('current');
+    current.classList.add('current');
+
+    currentPage = pageNum;
+
+    const display = document.getElementById('dest');
+    display.style.backgroundImage = `url("${current.src}")`;
+
+    scroll(0,0)
+
+    document.getElementById('page-num')
+        .innerText = [
+                (pageNum + 1).toLocaleString(),
+                pages.length.toLocaleString()
+            ].join('\u200a/\u200a');
+}
+
+changePage(0);
+
+document.getElementById('list').onclick = event => {
+    if (pages.includes(event.target)) {
+        changePage(pages.indexOf(event.target));
+    }
+};
+
+document.getElementById('image-container').onclick = event => {
+    const width = document.getElementById('image-container').clientWidth;
+    const clickPos = event.clientX / width;
+
+    if (clickPos < 0.5) {
+        changePage(currentPage - 1);
+    } else {
+        changePage(currentPage + 1);
+    }
+};
+
+document.onkeypress = event => {
+    switch (event.key.toLowerCase()) {
+        // Previous Image
+        case 'w':
+            scrollBy(0, -40);
+            break;
+        case 'a':
+            changePage(currentPage - 1);
+            break;
+        // Return to previous page
+        case 'q':
+            window.history.go(-1);
+            break;
+        // Next Image
+        case ' ':
+        case 's':
+            scrollBy(0, 40);
+            break;
+        case 'd':
+            changePage(currentPage + 1);
+            break;
+    }// remove arrow cause it won't work
+};
+
+document.onkeydown = event =>{
+    switch (event.keyCode) {
+        case 37: //left
+            changePage(currentPage - 1);
+            break;
+        case 38: //up
+            changePage(currentPage - 1);
+            break;
+        case 39: //right
+            changePage(currentPage + 1);
+            break;
+        case 40: //down
+            changePage(currentPage + 1);
+            break;
+    }
+};

doujinshi_dl/viewer/viewer/default/styles.css

@@ -0,0 +1,70 @@
+  
+*, *::after, *::before {
+    box-sizing: border-box;
+}
+
+img {
+    vertical-align: middle;
+}
+
+html, body {
+    display: flex;
+    background-color: #e8e6e6;
+    height: 100%;
+    width: 100%;
+    padding: 0;
+    margin: 0;
+    font-family: sans-serif;
+}
+
+#list {
+    height: 2000px;
+    overflow: scroll;
+    width: 260px;
+    text-align: center;
+}
+
+#list img {
+    width: 200px;
+    padding: 10px;
+    border-radius: 10px;
+    margin: 15px 0;
+    cursor: pointer;
+}
+
+#list img.current {
+    background: #0003;
+}
+
+#image-container {
+    flex: auto;
+    height: 2000px;
+    background: #222;
+    color: #fff;
+    text-align: center;
+    cursor: pointer;
+    -webkit-user-select: none;
+    user-select: none;
+    position: relative;
+}
+
+#image-container #dest {
+    height: 2000px;
+    width: 100%;
+    background-size: contain;
+    background-repeat: no-repeat;
+    background-position: top;
+}
+
+#image-container #page-num {
+    position: static;
+    font-size: 14pt;
+    left: 10px;
+    bottom: 5px;
+    font-weight: bold;
+    opacity: 0.75;
+    text-shadow: /* Duplicate the same shadow to make it very strong */
+        0 0 2px #222,
+        0 0 2px #222,
+        0 0 2px #222;
+}

doujinshi_dl/viewer/viewer/main.css

@@ -0,0 +1,331 @@
+/*! normalize.css v5.0.0 | MIT License | github.com/necolas/normalize.css */
+a {
+    background-color: transparent;
+    -webkit-text-decoration-skip: objects
+}
+
+img {
+    border-style: none
+}
+
+html {
+    box-sizing: border-box
+}
+
+*,:after,:before {
+    box-sizing: inherit
+}
+
+body,html {
+    font-family: 'Noto Sans',sans-serif;
+    font-size: 14px;
+    line-height: 1.42857143;
+    height: 100%;
+    margin: 0;
+    text-align: center;
+    color: #34495e;
+    background-color: #fff;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale
+}
+
+a {
+    text-decoration: none;
+    color: #34495e
+}
+
+blockquote {
+    border: 0
+}
+
+.container {
+    display: block;
+    clear: both;
+    margin-left: 15rem;
+    margin-right: 0.5rem;
+    margin-bottom: 5px;
+    margin-top: 5px;
+    padding: 4px;
+    border-radius: 9px;
+    background-color: #ecf0f1;
+    width: 100% - 15rem;
+    max-width: 1500px
+}
+
+.gallery,.gallery-favorite,.thumb-container {
+    display: inline-block;
+    vertical-align: top
+}
+
+.gallery img,.gallery-favorite img,.thumb-container img {
+    display: block;
+    max-width: 100%;
+    height: auto
+}
+
+@media screen and (min-width: 980px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:19%;
+        margin: 3px;
+    }
+}
+
+@media screen and (max-width: 979px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:24%;
+        margin: 2px
+    }
+}
+
+@media screen and (max-width: 772px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:32%;
+        margin: 1.5px
+    }
+}
+
+@media screen and (max-width: 500px) {
+    .gallery,.gallery-favorite,.thumb-container {
+        width:49%;
+        margin: .5px
+    }
+}
+
+.gallery a,.gallery-favorite a {
+    display: block
+}
+
+.gallery a img,.gallery-favorite a img {
+    position: absolute
+}
+
+.caption {
+    line-height: 15px;
+    left: 0;
+    right: 0;
+    top: 100%;
+    position: absolute;
+    z-index: 10;
+    overflow: hidden;
+    width: 100%;
+    max-height: 34px;
+    padding: 3px;
+    background-color: #fff;
+    font-weight: 700;
+    display: block;
+    text-align: center;
+    text-decoration: none;
+    color: #34495e
+}
+
+.gallery {
+    position: relative;
+    margin-bottom: 3em
+}
+
+.gallery:hover .caption {
+    max-height: 100%;
+    box-shadow: 0 10px 20px rgba(100,100,100,.5)
+}
+
+.gallery-favorite .gallery {
+    width: 100%
+}
+
+.sidenav {
+  height: 100%;
+  width: 15rem;
+  position: fixed;
+  z-index: 1;
+  top: 0;
+  left: 0;
+  background-color: #0d0d0d;
+  overflow: hidden;
+
+  padding-top: 20px;
+  -webkit-touch-callout: none; /* iOS Safari */
+  -webkit-user-select: none; /* Safari */
+  -khtml-user-select: none; /* Konqueror HTML */
+  -moz-user-select: none; /* Old versions of Firefox */
+  -ms-user-select: none; /* Internet Explorer/Edge */
+  user-select: none;
+}
+
+.sidenav a {
+  background-color: #eee;
+  padding: 5px 0px 5px 15px;
+  text-decoration: none;
+  font-size: 15px;
+  color: #0d0d0d;
+  display: block;
+  text-align: left;
+}
+.sidenav img {
+	width:100%;
+	padding: 0px 5px 0px 5px;
+
+}
+
+.sidenav h1 {
+    font-size: 1.5em;
+	margin: 0px 0px 10px;
+}
+
+.sidenav a:hover {
+  color: white;
+  background-color: #EC2754;
+}
+
+.accordion {
+  font-weight: bold;
+  background-color: #eee;
+  color: #444;
+  padding: 10px 0px 5px 8px;
+  width: 100%;
+  border: none;
+  text-align: left;
+  outline: none;
+  font-size: 15px;
+  transition: 0.4s;
+  cursor:pointer;
+}
+
+.accordion:hover {
+  background-color: #ddd;
+}
+
+.accordion.active{
+  background-color:#ddd;
+}
+
+.nav-btn {
+  font-weight: bold;
+  background-color: #eee;
+  color: #444;
+  padding: 8px 8px 5px 9px;
+  width: 100%;
+  border: none;
+  text-align: left;
+  outline: none;
+  font-size: 15px;
+}
+
+.hidden {
+  display:none;
+}
+
+.nav-btn a{
+  font-weight: normal;
+  padding-right: 10px;
+  border-radius: 15px;
+  cursor: crosshair
+}
+
+.options {
+  display:block;
+  padding: 0px 0px 0px 0px;
+  background-color: #eee;
+  max-height: 0;
+  overflow: hidden;
+  transition: max-height 0.2s ease-out;
+  cursor:pointer;
+}
+
+.search{
+  background-color: #eee;
+  padding-right:40px;
+  white-space: nowrap;
+  padding-top: 5px;
+  height:43px;
+
+}
+
+.search input{
+  border-top-right-radius:10px;
+  padding-top:0;
+  padding-bottom:0;
+  font-size:1em;
+  width:100%;
+  height:38px;
+  vertical-align:top;
+}
+
+.btn{
+  border-top-left-radius:10px;
+  color:#fff;
+  font-size:100%;
+  padding: 8px;
+  width:38px;
+  background-color:#ed2553;
+}
+
+#tags{
+    text-align:left;
+    display: flex;
+	width:15rem;
+    justify-content: start;
+	margin: 2px 2px 2px 0px;
+	flex-wrap: wrap;
+}
+
+.btn-2{
+  font-weight:700;
+  padding-right:0.5rem;
+  padding-left:0.5rem;
+  color:#fff;
+  border:0;
+  font-size:100%;
+  height:1.25rem;
+  outline: 0;
+  border-radius: 0.3rem;
+  cursor: pointer;
+  margin:0.15rem;
+  transition: all 1s linear;
+}
+
+.btn-2#parody{
+  background-color: red;
+}
+
+.btn-2#character{
+  background-color: blue;
+}
+
+.btn-2#tag{
+  background-color: green;
+}
+
+.btn-2#artist{
+  background-color: fuchsia;
+}
+
+.btn-2#group{
+  background-color: teal;
+}
+
+.btn-2.hover{
+  filter: saturate(20%)
+}
+
+input,input:focus{
+  border:none;
+  outline:0;
+}
+
+html.theme-black,html.theme-black body {
+    color: #d9d9d9;
+    background-color: #0d0d0d
+}
+
+html.theme-black #thumbnail-container,html.theme-black .container {
+    background-color: #1f1f1f
+}
+
+html.theme-black .gallery:hover .caption {
+    box-shadow: 0 10px 20px rgba(0,0,0,.5)
+}
+
+html.theme-black .caption {
+    background-color: #404040;
+    color: #d9d9d9
+}

doujinshi_dl/viewer/viewer/main.html

@@ -0,0 +1,51 @@
+<!doctype html>
+<html lang="en" class=" theme-black">
+
+<head>
+    <meta charset="utf-8" />
+    <meta name="theme-color" content="#1f1f1f" />
+    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes, viewport-fit=cover" />
+    <title>Doujinshi Viewer</title>
+    <script type="text/javascript" src="data.js"></script>
+        <!-- <link rel="stylesheet" href="./main.css"> -->
+<style>
+{STYLES}
+</style>
+</head>
+
+<body>
+    <div id="content">
+        <nav class="sidenav">
+			<img src="logo.png">
+			<h1>Doujinshi Viewer</h1>
+                        <button class="accordion">Language</button>
+            <div class="options" id="language">
+                    <a>English</a>
+                    <a>Japanese</a>
+                    <a>Chinese</a>
+            </div>
+			<button class="accordion">Category</button>
+            <div class="options" id ="category">
+                    <a>Doujinshi</a>
+                    <a>Manga</a>
+            </div>
+			<button class="nav-btn hidden">Filters</button>
+			<div class="search">
+				<input autocomplete="off" type="search" id="tagfilter" name="q" value="" autocapitalize="none" required="">
+				<svg class="btn" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="white" d="M505 442.7L405.3 343c-4.5-4.5-10.6-7-17-7H372c27.6-35.3 44-79.7 44-128C416 93.1 322.9 0 208 0S0 93.1 0 208s93.1 208 208 208c48.3 0 92.7-16.4 128-44v16.3c0 6.4 2.5 12.5 7 17l99.7 99.7c9.4 9.4 24.6 9.4 33.9 0l28.3-28.3c9.4-9.4 9.4-24.6.1-34zM208 336c-70.7 0-128-57.2-128-128 0-70.7 57.2-128 128-128 70.7 0 128 57.2 128 128 0 70.7-57.2 128-128 128z"/></svg>
+			<div id="tags">
+			</div>
+		</nav>
+        <div class="container" id="favcontainer">
+
+            {PICTURE}
+
+        </div> <!-- container -->
+
+    </div>
+<script>
+    {SCRIPTS}
+</script>
+</body>
+
+</html>

doujinshi_dl/viewer/viewer/main.js

@@ -0,0 +1,177 @@
+    //------------------------------------navbar script------------------------------------
+var menu = document.getElementsByClassName("accordion");
+for (var i = 0; i < menu.length; i++) {
+  menu[i].addEventListener("click", function() {
+    var panel = this.nextElementSibling;
+    if (panel.style.maxHeight) {
+	  this.classList.toggle("active");
+      panel.style.maxHeight = null;
+    } else {
+      panel.style.maxHeight = panel.scrollHeight + "px";
+	  this.classList.toggle("active");
+    }
+  });
+}
+var language = document.getElementById("language").children;
+for (var i = 0; i < language.length; i++){
+	language[i].addEventListener("click", function() {
+		toggler = document.getElementById("language")
+		toggler.style.maxHeight = null;
+		document.getElementsByClassName("accordion")[0].classList.toggle("active");
+		filter_maker(this.innerText, "language");
+});
+}
+var category = document.getElementById("category").children;
+for (var i = 0; i < category.length; i++){
+	category[i].addEventListener("click", function() {
+		document.getElementById("category").style.maxHeight = null;
+		document.getElementsByClassName("accordion")[1].classList.toggle("active");
+		filter_maker(this.innerText, "category");
+});
+}
+//-----------------------------------------------------------------------------------
+//----------------------------------Tags Script--------------------------------------
+tag_maker(tags);
+
+var tag = document.getElementsByClassName("btn-2");
+for (var i = 0; i < tag.length; i++){
+	tag[i].addEventListener("click", function() {
+	filter_maker(this.innerText, this.id);
+});
+}
+
+var input = document.getElementById("tagfilter");
+input.addEventListener("input", function() {
+	var tags = document.querySelectorAll(".btn-2");
+	if (this.value.length > 0) {
+        for (var i = 0; i < tags.length; i++) {
+            var tag = tags[i];
+            var nome = tag.innerText;
+            var exp = new RegExp(this.value, "i");;
+            if (exp.test(nome)) {
+                tag.classList.remove("hidden");
+		    }
+			else {
+				tag.classList.add("hidden");
+            }
+        }
+    } else {
+        for (var i = 0; i < tags.length; i++) {
+            var tag = tags[i];
+				tag.classList.add('hidden');
+        }
+    }
+});
+input.addEventListener('keypress', function (e) {
+	enter_search(e, this.value);
+});
+//-----------------------------------------------------------------------------------
+//------------------------------------Functions--------------------------------------
+function enter_search(e, input){
+	var count = 0;
+	var key = e.which || e.keyCode;
+	if (key === 13 && input.length > 0) {
+	  var all_tags = document.getElementById("tags").children;
+	  for(i = 0; i < all_tags.length; i++){
+		if (!all_tags[i].classList.contains("hidden")){
+			count++;
+			var tag_name = all_tags[i].innerText;
+			var tag_id   = all_tags[i].id;
+			if (count>1){break}
+		}
+	  }
+	  if (count == 1){
+		filter_maker(tag_name, tag_id);
+	  }
+	}
+}
+function filter_maker(text, class_value){
+    var check = filter_checker(text);
+	var nav_btn = document.getElementsByClassName("nav-btn")[0];
+	if (nav_btn.classList.contains("hidden")){
+	  nav_btn.classList.toggle("hidden");
+	}
+	if (check == true){
+		var node = document.createElement("a");
+		var textnode = document.createTextNode(text);
+		node.appendChild(textnode);
+		node.classList.add(class_value);
+		nav_btn.appendChild(node);
+		filter_searcher();
+	}
+}
+
+function filter_searcher(){
+	var verifier = null;
+	var tags_filter = [];
+	var doujinshi_id = [];
+	var filter_tag = document.getElementsByClassName("nav-btn")[0].children;
+	filter_tag[filter_tag.length-1].addEventListener("click", function() {
+		this.remove();
+		try{
+			filter_searcher();
+		}
+		catch{
+			var gallery = document.getElementsByClassName("gallery-favorite");
+			for (var i = 0; i < gallery.length; i++){
+				gallery[i].classList.remove("hidden");
+			}
+		}
+	});
+	for (var i=0; i < filter_tag.length; i++){
+		var fclass = filter_tag[i].className;
+		var fname = filter_tag[i].innerText.toLowerCase();
+		tags_filter.push([fclass, fname])
+	}
+	for (var i=0; i < data.length; i++){
+		for (var j=0; j < tags_filter.length; j++){
+			try{
+				if(data[i][tags_filter[j][0]].includes(tags_filter[j][1])){
+					verifier = true;
+				}
+				else{
+					verifier = false;
+					break
+				}
+			}
+			catch{
+				verifier = false;
+					break
+			}
+		}
+		if (verifier){doujinshi_id.push(data[i].Folder.replace("_", " "));}
+	}
+	var gallery = document.getElementsByClassName("gallery-favorite");
+	for (var i = 0; i < gallery.length; i++){
+		gtext = gallery	[i].children[0].children[0].children[1].innerText;
+		if(doujinshi_id.includes(gtext)){
+			gallery[i].classList.remove("hidden");
+		}
+		else{
+		gallery[i].classList.add("hidden");
+		}
+	}
+}
+
+function filter_checker(text){
+    var filter_tags = document.getElementsByClassName("nav-btn")[0].children;
+	if (filter_tags == null){return true;}
+	for (var i=0; i < filter_tags.length; i++){
+		if (filter_tags[i].innerText == text){return false;}
+	}
+	return true;
+}
+
+function tag_maker(data){
+	for (i in data){
+		for (j in data[i]){
+			var node = document.createElement("button");
+			var textnode = document.createTextNode(data[i][j]);
+			node.appendChild(textnode);
+			node.classList.add("btn-2");
+			node.setAttribute('id', i);
+			node.classList.add("hidden");
+			document.getElementById("tags").appendChild(node);
+		}
+	}
+}

doujinshi_dl/viewer/viewer/minimal/index.html

@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes, viewport-fit=cover" />
+    <title>{TITLE}</title>
+    <style>
+{STYLES}
+    </style>
+</head>
+<body>
+
+<nav id="list" hidden=true>
+{IMAGES}</nav>
+
+<div id="image-container">
+    <div id="dest"></div>
+    <span id="page-num"></span>
+</div>
+
+<script>
+{SCRIPTS}
+</script>
+</body>
+</html>

doujinshi_dl/viewer/viewer/minimal/scripts.js

@@ -0,0 +1,79 @@
+const pages = Array.from(document.querySelectorAll('img.image-item'));
+let currentPage = 0;
+
+function changePage(pageNum) {
+    const previous = pages[currentPage];
+    const current = pages[pageNum];
+
+    if (current == null) {
+        return;
+    }
+    
+    previous.classList.remove('current');
+    current.classList.add('current');
+
+    currentPage = pageNum;
+
+    const display = document.getElementById('dest');
+    display.style.backgroundImage = `url("${current.src}")`;
+
+    scroll(0,0)
+
+    document.getElementById('page-num')
+        .innerText = [
+                (pageNum + 1).toLocaleString(),
+                pages.length.toLocaleString()
+            ].join('\u200a/\u200a');
+}
+
+changePage(0);
+
+document.getElementById('image-container').onclick = event => {
+    const width = document.getElementById('image-container').clientWidth;
+    const clickPos = event.clientX / width;
+
+    if (clickPos < 0.5) {
+        changePage(currentPage - 1);
+    } else {
+        changePage(currentPage + 1);
+    }
+};
+
+document.onkeypress = event => {
+    switch (event.key.toLowerCase()) {
+        // Previous Image
+        case 'w':
+	   scrollBy(0, -40);
+	   break;
+        case 'a':
+            changePage(currentPage - 1);
+            break;
+        // Return to previous page
+        case 'q':
+            window.history.go(-1);
+            break;
+        // Next Image
+        case ' ':
+        case 's':
+	    scrollBy(0, 40);
+            break;
+        case 'd':
+            changePage(currentPage + 1);
+            break;
+    }// remove arrow cause it won't work
+};
+
+document.onkeydown = event =>{
+    switch (event.keyCode) {
+        case 37: //left
+            changePage(currentPage - 1);
+            break;
+        case 38: //up
+            break;
+        case 39: //right
+            changePage(currentPage + 1);
+            break;
+        case 40: //down
+            break;
+    }
+};

doujinshi_dl/viewer/viewer/minimal/styles.css

@@ -0,0 +1,75 @@
+  
+*, *::after, *::before {
+    box-sizing: border-box;
+}
+
+img {
+    vertical-align: middle;
+}
+
+html, body {
+    display: flex;
+    background-color: #e8e6e6;
+    height: 100%;
+    width: 100%;
+    padding: 0;
+    margin: 0;
+    font-family: sans-serif;
+}
+
+#list {
+    height: 2000px;
+    overflow: scroll;
+    width: 260px;
+    text-align: center;
+}
+
+#list img {
+    width: 200px;
+    padding: 10px;
+    border-radius: 10px;
+    margin: 15px 0;
+    cursor: pointer;
+}
+
+#list img.current {
+    background: #0003;
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pyproject.toml

@@ -0,0 +1,29 @@
+[tool.poetry]
+name = "doujinshi-dl"
+version = "2.0.5"
+description = "doujinshi downloader"
+authors = ["Ricter Z <ricterzheng@gmail.com>"]
+license = "MIT"
+readme = "README.rst"
+homepage = "https://github.com/RicterZ/doujinshi-dl"
+repository = "https://github.com/RicterZ/doujinshi-dl"
+packages = [{include = "doujinshi_dl"}]
+include = ["doujinshi_dl/viewer/**"]
+
+
+[tool.poetry.dependencies]
+python = "^3.8"
+requests = ">=2.28"
+soupsieve = ">=2.3"
+beautifulsoup4 = ">=4.11"
+tabulate = ">=0.9"
+iso8601 = ">=1.0"
+httpx = ">=0.23"
+chardet = ">=4.0"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.poetry.scripts]
+doujinshi-dl = 'doujinshi_dl.command:main'

qodana.yaml

@@ -0,0 +1,29 @@
+#-------------------------------------------------------------------------------#
+#               Qodana analysis is configured by qodana.yaml file               #
+#             https://www.jetbrains.com/help/qodana/qodana-yaml.html            #
+#-------------------------------------------------------------------------------#
+version: "1.0"
+
+#Specify inspection profile for code analysis
+profile:
+  name: qodana.starter
+
+#Enable inspections
+#include:
+#  - name: <SomeEnabledInspectionId>
+
+#Disable inspections
+#exclude:
+#  - name: <SomeDisabledInspectionId>
+#    paths:
+#      - <path/where/not/run/inspection>
+
+#Execute shell command before Qodana execution (Applied in CI/CD pipeline)
+#bootstrap: sh ./prepare-qodana.sh
+
+#Install IDE plugins before Qodana execution (Applied in CI/CD pipeline)
+#plugins:
+#  - id: <plugin.id> #(plugin id can be found at https://plugins.jetbrains.com)
+
+#Specify Qodana linter for analysis (Applied in CI/CD pipeline)
+linter: jetbrains/qodana-python:2024.3