from typing import List, Optional, Type
from urllib.parse import urlparse, urlunparse
import json
from enum import Enum
from bs4 import BeautifulSoup
import pycountry

from ..objects import Source, DatabaseObject
from ._abstract import Page
from ..objects import (
    Artist,
    Source,
    SourceType,
    Song,
    Album,
    Label,
    Target,
    Contact,
    ID3Timestamp,
    Lyrics,
    FormattedText,
    Artwork,
)
from ..connection import Connection
from ..utils import dump_to_file
from ..utils.enums import SourceType, ALL_SOURCE_TYPES
from ..utils.support_classes.download_result import DownloadResult
from ..utils.string_processing import clean_song_title
from ..utils.config import main_settings, logging_settings
from ..utils.shared import DEBUG

if DEBUG:
    from ..utils import dump_to_file


def _parse_artist_url(url: str) -> str:
    parsed = urlparse(url)
    return urlunparse((parsed.scheme, parsed.netloc, "/music/", "", "", ""))


def _get_host(source: Source) -> str:
    parsed = urlparse(source.url)
    return urlunparse((parsed.scheme, parsed.netloc, "", "", "", ""))


class BandcampTypes(Enum):
    ARTIST = "b"
    ALBUM = "a"
    SONG = "t"


class Bandcamp(Page):
    SOURCE_TYPE = ALL_SOURCE_TYPES.BANDCAMP

    def __init__(self, *args, **kwargs):
        self.connection: Connection = Connection(
            host="https://bandcamp.com/",
            logger=self.LOGGER,
            module="bandcamp",
        )

        super().__init__(*args, **kwargs)

    def get_source_type(self, source: Source) -> Optional[Type[DatabaseObject]]:
        path = source.parsed_url.path.replace("/", "")

        if path == "" or path.startswith("music"):
            return Artist
        if path.startswith("album"):
            return Album
        if path.startswith("track"):
            return Song

        return super().get_source_type(source)

    def _parse_autocomplete_api_result(self, data: dict) -> DatabaseObject:
        try:
            object_type = BandcampTypes(data["type"])
        except ValueError:
            return

        url = data["item_url_root"]
        if "item_url_path" in data:
            url = data["item_url_path"]

        source_list = [Source(self.SOURCE_TYPE, url)]
        name = data["name"]

        if data.get("is_label", False):
            return Label(
                name=name,
                source_list=source_list
            )

        if object_type is BandcampTypes.ARTIST:
            source_list = [Source(self.SOURCE_TYPE, _parse_artist_url(url))]
            return Artist(
                name=name,
                source_list=source_list
            )

        if object_type is BandcampTypes.ALBUM:
            return Album(
                title=name,
                source_list=source_list,
                artist_list=[
                    Artist(
                        name=data["band_name"].strip(),
                        source_list=[
                            Source(self.SOURCE_TYPE, data["item_url_root"])
                        ]
                    )
                ]
            )

        if object_type is BandcampTypes.SONG:
            return Song(
                title=clean_song_title(name, artist_name=data["band_name"]),
                source_list=source_list,
                artist_list=[
                    Artist(
                        name=data["band_name"],
                        source_list=[
                            Source(self.SOURCE_TYPE, data["item_url_root"])
                        ]
                    )
                ]
            )

    def general_search(self, search_query: str, filter_string: str = "") -> List[DatabaseObject]:
        results = []

        r = self.connection.post("https://bandcamp.com/api/bcsearch_public_api/1/autocomplete_elastic", json={
            "fan_id": None,
            "full_page": True,
            "search_filter": filter_string,
            "search_text": search_query,
        }, name=f"search_{filter_string}_{search_query}")
        if r is None:
            return results

        if DEBUG:
            dump_to_file("bandcamp_search_response.json", r.text, is_json=True, exit_after_dump=False)

        data = r.json()

        for element in data.get("auto", {}).get("results", []):
            r = self._parse_autocomplete_api_result(element)
            if r is not None:
                results.append(r)

        return results

    def label_search(self, label: Label) -> List[Label]:
        return self.general_search(label.name, filter_string="b")

    def artist_search(self, artist: Artist) -> List[Artist]:
        return self.general_search(artist.name, filter_string="b")

    def album_search(self, album: Album) -> List[Album]:
        return self.general_search(album.title, filter_string="a")

    def song_search(self, song: Song) -> List[Song]:
        return self.general_search(song.title, filter_string="t")

    def fetch_label(self, source: Source, stop_at_level: int = 1) -> Label:
        return Label()

    def _parse_artist_details(self, soup: BeautifulSoup) -> Artist:
        name: str = None
        source_list: List[Source] = []
        contact_list: List[Contact] = []

        band_name_location: BeautifulSoup = soup.find("p", {"id": "band-name-location"})
        if band_name_location is not None:
            title_span = band_name_location.find("span", {"class": "title"})
            if title_span is not None:
                name = title_span.text.strip()

        link_container: BeautifulSoup = soup.find("ol", {"id": "band-links"})
        if link_container is not None:
            li: BeautifulSoup
            for li in link_container.find_all("a"):
                if li is None and li['href'] is not None:
                    continue

                source_list.append(Source.match_url(_parse_artist_url(li['href']), referrer_page=self.SOURCE_TYPE))

        return Artist(
            name=name,
            source_list=source_list
        )

    def _parse_album(self, soup: BeautifulSoup, initial_source: Source) -> List[Album]:
        title = None
        source_list: List[Source] = []

        a = soup.find("a")
        if a is not None and a["href"] is not None:
            source_list.append(Source(self.SOURCE_TYPE, _get_host(initial_source) + a["href"]))

        title_p = soup.find("p", {"class": "title"})
        if title_p is not None:
            title = title_p.text.strip()

        return Album(title=title, source_list=source_list)

    def _parse_artist_data_blob(self, data_blob: dict, artist_url: str):
        parsed_artist_url = urlparse(artist_url)
        album_list: List[Album] = []

        for album_json in data_blob.get("buyfulldisco", {}).get("tralbums", []):
            album_list.append(Album(
                title=album_json["title"].strip(),
                source_list=[Source(
                    self.SOURCE_TYPE,
                    urlunparse((parsed_artist_url.scheme, parsed_artist_url.netloc, album_json["page_url"], "", "", ""))
                )]
            ))

        return album_list

    def fetch_artist(self, source: Source, stop_at_level: int = 1) -> Artist:
        artist = Artist()

        r = self.connection.get(_parse_artist_url(source.url), name=f"artist_{urlparse(source.url).scheme}_{urlparse(source.url).netloc}")
        if r is None:
            return artist

        soup = self.get_soup_from_response(r)

        if DEBUG:
            dump_to_file("artist_page.html", r.text, exit_after_dump=False)

        artist = self._parse_artist_details(soup=soup.find("div", {"id": "bio-container"}))

        html_music_grid = soup.find("ol", {"id": "music-grid"})
        if html_music_grid is not None:
            for subsoup in html_music_grid.find_all("li"):
                artist.album_collection.append(self._parse_album(soup=subsoup, initial_source=source))

        for i, data_blob_soup in enumerate(soup.find_all("div", {"id": ["pagedata", "collectors-data"]})):
            data_blob = data_blob_soup["data-blob"]

            if DEBUG:
                dump_to_file(f"bandcamp_artist_data_blob_{i}.json", data_blob, is_json=True, exit_after_dump=False)

            if data_blob is not None:
                artist.album_collection.extend(
                    self._parse_artist_data_blob(json.loads(data_blob), source.url)
                )

        artist.source_collection.append(source)
        return artist

    def _parse_track_element(self, track: dict, artwork: Artwork) -> Optional[Song]:
        lyrics_list: List[Lyrics] = []

        _lyrics: Optional[str] = track.get("item", {}).get("recordingOf", {}).get("lyrics", {}).get("text")
        if _lyrics is not None:
            lyrics_list.append(Lyrics(text=FormattedText(plain=_lyrics)))

        return Song(
            title=clean_song_title(track["item"]["name"]),
            source_list=[Source(self.SOURCE_TYPE, track["item"]["mainEntityOfPage"])],
            tracksort=int(track["position"]),
            artwork=artwork,
        )

    def fetch_album(self, source: Source, stop_at_level: int = 1) -> Album:
        album = Album()

        r = self.connection.get(source.url, name=f"album_{urlparse(source.url).netloc.split('.')[0]}_{urlparse(source.url).path.replace('/', '').replace('album', '')}")
        if r is None:
            return album

        soup = self.get_soup_from_response(r)

        data_container = soup.find("script", {"type": "application/ld+json"})

        if DEBUG:
            dump_to_file("album_data.json", data_container.text, is_json=True, exit_after_dump=False)

        data = json.loads(data_container.text)
        artist_data = data["byArtist"]

        artist_source_list = []
        if "@id" in artist_data:
            artist_source_list = [Source(self.SOURCE_TYPE, _parse_artist_url(artist_data["@id"]))]
        album = Album(
            title=data["name"].strip(),
            source_list=[Source(self.SOURCE_TYPE, data.get("mainEntityOfPage", data["@id"]))],
            date=ID3Timestamp.strptime(data["datePublished"], "%d %b %Y %H:%M:%S %Z"),
            artist_list=[Artist(
                name=artist_data["name"].strip(),
                source_list=artist_source_list
            )]
        )

        artwork: Artwork = Artwork()

        def _get_artwork_url(_data: dict) -> Optional[str]:
            if "image" in _data:
                return _data["image"]
            for _property in _data.get("additionalProperty", []):
                if _property.get("name") == "art_id":
                    return f"https://f4.bcbits.com/img/a{_property.get('value')}_2.jpg"

        _artwork_url = _get_artwork_url(data)
        if _artwork_url is not None:
            artwork.append(url=_artwork_url, width=350, height=350)
        else:
            for album_release in data.get("albumRelease", []):
                _artwork_url = _get_artwork_url(album_release)
                if _artwork_url is not None:
                    artwork.append(url=_artwork_url, width=350, height=350)
                    break


        for i, track_json in enumerate(data.get("track", {}).get("itemListElement", [])):
            if DEBUG:
                dump_to_file(f"album_track_{i}.json", json.dumps(track_json), is_json=True, exit_after_dump=False)

            try:
                album.song_collection.append(self._parse_track_element(track_json, artwork=artwork))
            except KeyError:
                continue

        album.source_collection.append(source)
        return album

    def _fetch_lyrics(self, soup: BeautifulSoup) -> List[Lyrics]:
        track_lyrics = soup.find("div", {"class": "lyricsText"})
        if track_lyrics:
            return [Lyrics(text=FormattedText(html=track_lyrics.prettify()))]

        return []

    def fetch_song(self, source: Source, stop_at_level: int = 1) -> Song:
        r = self.connection.get(source.url, name=f"song_{urlparse(source.url).netloc.split('.')[0]}_{urlparse(source.url).path.replace('/', '').replace('track', '')}")
        if r is None:
            return Song()

        soup = self.get_soup_from_response(r)

        data_container = soup.find("script", {"type": "application/ld+json"})
        other_data = {}

        other_data_list = soup.select("script[data-tralbum]")
        if len(other_data_list) > 0:
            other_data = json.loads(other_data_list[0]["data-tralbum"])

        dump_to_file("bandcamp_song_data.json", data_container.text, is_json=True, exit_after_dump=False)
        dump_to_file("bandcamp_song_data_other.json", json.dumps(other_data), is_json=True, exit_after_dump=False)
        dump_to_file("bandcamp_song_page.html", r.text, exit_after_dump=False)

        data = json.loads(data_container.text)
        album_data = data["inAlbum"]
        artist_data = data["byArtist"]

        mp3_url = None
        for key, value in other_data.get("trackinfo", [{}])[0].get("file", {"": None}).items():
            mp3_url = value

        song = Song(
            title=clean_song_title(data["name"], artist_name=artist_data["name"]),
            source_list=[source, Source(self.SOURCE_TYPE, data.get("mainEntityOfPage", data["@id"]), audio_url=mp3_url)],
            album_list=[Album(
                title=album_data["name"].strip(),
                date=ID3Timestamp.strptime(data["datePublished"], "%d %b %Y %H:%M:%S %Z"),
                source_list=[Source(self.SOURCE_TYPE, album_data["@id"])]
            )],
            artist_list=[Artist(
                name=artist_data["name"].strip(),
                source_list=[Source(self.SOURCE_TYPE, _parse_artist_url(artist_data["@id"]))]
            )],
            lyrics_list=self._fetch_lyrics(soup=soup)
        )

        return song

    def download_song_to_target(self, source: Source, target: Target, desc: str = None) -> DownloadResult:
        if source.audio_url is None:
            return DownloadResult(error_message="Couldn't find download link.")
        return self.connection.stream_into(url=source.audio_url, target=target, description=desc)