# -*- coding: utf-8 -*-

# Copyright 2019 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.

"""Extractors for 4chan archives based on FoolFuuka"""

from .common import Extractor, Message, SharedConfigMixin
from .. import text, config
import itertools
import operator
import re


class FoolfuukaThreadExtractor(SharedConfigMixin, Extractor):
    """Base extractor for FoolFuuka based boards/archives"""
    basecategory = "foolfuuka"
    subcategory = "thread"
    directory_fmt = ["{category}", "{board[shortname]}",
                     "{thread_num}{title:? - //}"]
    filename_fmt = "{media[media]}"
    archive_fmt = "{board[shortname]}_{num}_{timestamp}"
    root = ""

    def __init__(self, match):
        Extractor.__init__(self)
        self.board, self.thread = match.groups()
        self.session.headers["Referer"] = self.root

    def items(self):
        op = True
        yield Message.Version, 1
        for post in self.posts():
            if op:
                yield Message.Directory, post
                op = False
            if not post["media"]:
                continue

            media = post["media"]
            url = media["media_link"]

            if not url and "remote_media_link" in media:
                url = self.remote(media)
            if url.startswith("/"):
                url = self.root + url

            post["extension"] = url.rpartition(".")[2]
            yield Message.Url, url, post

    def posts(self):
        url = self.root + "/_/api/chan/thread/"
        params = {"board": self.board, "num": self.thread}
        data = self.request(url, params=params).json()[self.thread]

        # sort post-objects by key
        posts = sorted(data.get("posts", {}).items())
        posts = map(operator.itemgetter(1), posts)

        return itertools.chain((data["op"],), posts)

    def remote(self, media):
        needle = '<meta http-equiv="Refresh" content="0; url='
        page = self.request(media["remote_media_link"]).text
        return text.extract(page, needle, '"')[0]

    def _remote_simple(self, media):
        return media["remote_media_link"]


def generate_extractors():
    """Dynamically generate Extractor classes for FoolFuuka instances"""

    symtable = globals()
    extractors = config.get(("extractor", "foolfuuka"))

    if extractors:
        EXTRACTORS.update(extractors)

    for category, info in EXTRACTORS.items():

        if not isinstance(info, dict):
            continue

        root = info["root"]
        domain = root[root.index(":") + 3:]
        pattern = info.get("pattern") or re.escape(domain)
        name = (info.get("name") or category).capitalize()

        class Extr(FoolfuukaThreadExtractor):
            pass

        Extr.__name__ = Extr.__qualname__ = name + "ThreadExtractor"
        Extr.__doc__ = "Extractor for threads on " + domain
        Extr.category = category
        Extr.pattern = [r"(?:https?://)?" + pattern + r"/([^/]+)/thread/(\d+)"]
        Extr.test = info.get("test")
        Extr.root = root
        if info.get("remote") == "simple":
            Extr.remote = Extr._remote_simple
        symtable[Extr.__name__] = Extr


EXTRACTORS = {
    "4plebs": {
        "name": "fourplebs",
        "root": "https://archive.4plebs.org",
        "pattern": r"(?:archive\.)?4plebs\.org",
        "test": [("https://archive.4plebs.org/tg/thread/54059290", {
            "url": "07452944164b602502b02b24521f8cee5c484d2a",
        })],
    },
    "archivedmoe": {
        "root": "https://archived.moe",
        "test": [
            ("https://archived.moe/gd/thread/309639/", {
                "url": "fdd533840e2d535abd162c02d6dfadbc12e2dcd8",
                "content": "c27e2a7be3bc989b5dd859f7789cc854db3f5573",
            }),
            ("https://archived.moe/a/thread/159767162/", {
                "url": "ffec05a1a1b906b5ca85992513671c9155ee9e87",
            }),
        ],
    },
    "archiveofsins": {
        "root": "https://archiveofsins.com",
        "pattern": r"(?:www\.)?archiveofsins\.com",
        "test": [("https://archiveofsins.com/h/thread/4668813/", {
            "url": "f612d287087e10a228ef69517cf811539db9a102",
            "content": "0dd92d0d8a7bf6e2f7d1f5ac8954c1bcf18c22a4",
        })],
    },
    "b4k": {
        "root": "https://arch.b4k.co",
        "remote": "simple",
        "test": [("https://arch.b4k.co/meta/thread/196/", {
            "url": "cdd4931ac1cd00264b0b54e2e3b0d8f6ae48957e",
        })],
    },
    "desuarchive": {
        "root": "https://desuarchive.org",
        "test": [("https://desuarchive.org/a/thread/159542679/", {
            "url": "3ae1473f6916ac831efe5cc4d4e7d3298ce79406",
        })],
    },
    "fireden": {
        "root": "https://boards.fireden.net",
        "test": [("https://boards.fireden.net/a/thread/159803223/", {
            "url": "01b7baacfb0656a68e566368290e3072b27f86c9",
        })],
    },
    "nyafuu": {
        "root": "https://archive.nyafuu.org",
        "pattern": r"(?:archive\.)?nyafuu\.org",
        "test": [("https://archive.nyafuu.org/c/thread/2849220/", {
            "url": "bbe6f82944a45e359f5c8daf53f565913dc13e4f",
        })],
    },
    "rbt": {
        "root": "https://rbt.asia",
        "pattern": r"(?:rbt\.asia|(?:archive\.)?rebeccablacktech\.com)",
        "test": [
            ("https://rbt.asia/g/thread/61487650/", {
                "url": "61896d9d9a2edb556b619000a308a984307b6d30",
            }),
            ("https://archive.rebeccablacktech.com/g/thread/61487650/", {
                "url": "61896d9d9a2edb556b619000a308a984307b6d30",
            }),
        ],
    },
    "thebarchive": {
        "root": "https://thebarchive.com",
        "pattern": r"thebarchive\.com",
        "test": [("https://thebarchive.com/b/thread/739772332/", {
            "url": "e8b18001307d130d67db31740ce57c8561b5d80c",
        })],
    },
}


generate_extractors()