comicbookmaker.py

#! /usr/bin/python3
# vim: set expandtab tabstop=4 shiftwidth=4 :
"""Module to retrieve webcomics and create ebooks"""

import book
import argparse
import logging
import random
from comics import COMICS_DICT


def get_file_content_until_tag(path, tag):
    """Get content from a filepath up to a given tag.
    If tag is not is the file, an exception is thrown."""
    content = []
    with open(path) as f:
        for l in f:
            content.append(l)
            if tag == l.strip():
                return content
    raise ValueError('Could not find "%s" in file "%s"' % (tag, path))


def add_new_lines_after_tag(path, new_lines, tag):
    """Add lines to file from a given tag.
    All content until tag is kept, all content after is lost."""
    content = get_file_content_until_tag(path, tag)
    with open(path, "w") as f:
        f.write("".join(content + new_lines))


def main():
    """Main function"""
    logger = logging.getLogger()
    arg_to_method = {
        "list": "print_name",
        "update": "update",
        "info": "info",
        "check": "check_everything_is_ok",
        "fix": "try_to_get_missing_resources",
        "reset_new": "reset_new",
        "delete_last": "delete_last",
        "delete_all": "delete_all",
    }
    comic_names = sorted(COMICS_DICT.keys(), key=lambda s: s.lower())
    parser = argparse.ArgumentParser(
        description="Downloads webcomics and generates ebooks for offline reading"
    )
    parser.add_argument(
        "--comic",
        "-c",
        action="append",
        help=("comics to be considered (default: ALL) - categories can be used"),
        choices=comic_names,
        default=[],
    )
    parser.add_argument(
        "--excluded",
        "-e",
        action="append",
        help=("comics to be excluded - categories can be used"),
        choices=comic_names,
        default=[],
    )
    parser.add_argument(
        "--action",
        "-a",
        action="append",
        help=("actions required"),
        choices=list(arg_to_method) + ["book", "gitignore", "readme"],
        default=[],
    )
    parser.add_argument(
        "--loglevel",
        "-l",
        type=int,
        action="store",
        help=("log level (as per the Python logging module)"),
        default=logging.CRITICAL,
    )
    parser.add_argument(
        "--reverse",
        "-r",
        action="store_true",
        help=("process comics in reversed order"),
    )
    parser.add_argument(
        "--random",
        "-R",
        action="store_true",
        help=("process comics in random order"),
    )
    args = parser.parse_args()
    logger.setLevel(args.loglevel)
    # Apply default value
    if not args.comic:
        args.comic = ["ALL"]
    if not args.action:
        args.action = ["update"]
    comic_classes = set()
    for name in args.comic:
        for klass in COMICS_DICT[name]:
            comic_classes.add(klass)
    for name in args.excluded:
        for klass in COMICS_DICT[name]:
            comic_classes.discard(klass)
    comic_classes = list(comic_classes)
    if args.random:
        random.shuffle(comic_classes)
    else:
        comic_classes.sort(key=lambda c: c.name.lower(), reverse=args.reverse)
    logging.debug("Starting")
    for action in args.action:
        method_name = arg_to_method.get(action)
        if method_name is not None:
            for com in comic_classes:
                if args.random:
                    print(com.name)
                getattr(com, method_name)()
        elif action == "book":
            book.make_book(comic_classes)
        elif action == "gitignore":
            path = ".gitignore"
            new_content = [com.gitignore() for com in comic_classes]
            add_new_lines_after_tag(path, new_content, "# Generated folders")
        elif action == "readme":
            path = "README.md"
            new_content = [com.readme() for com in comic_classes]
            add_new_lines_after_tag(path, new_content, "----------------")
        else:
            print("Unknown action : %s" % action)


if __name__ == "__main__":
    main()