from .podcasts import parse_episode, parse_podcast
from .songs import *


def parse_mixed_content(rows):
    items = []
    for row in rows:
        if DESCRIPTION_SHELF[0] in row:
            results = nav(row, DESCRIPTION_SHELF)
            title = nav(results, ["header", *RUN_TEXT])
            contents = nav(results, DESCRIPTION)
        else:
            results = next(iter(row.values()))
            if "contents" not in results:
                continue
            title = nav(results, [*CAROUSEL_TITLE, "text"])
            contents = []
            for result in results["contents"]:
                data = nav(result, [MTRIR], True)
                content = None
                if data:
                    page_type = nav(data, TITLE + NAVIGATION_BROWSE + PAGE_TYPE, True)
                    if page_type is None:  # song or watch_playlist
                        if nav(data, NAVIGATION_WATCH_PLAYLIST_ID, True) is not None:
                            content = parse_watch_playlist(data)
                        else:
                            content = parse_song(data)
                    elif page_type == "MUSIC_PAGE_TYPE_ALBUM":
                        content = parse_album(data)
                    elif page_type == "MUSIC_PAGE_TYPE_ARTIST":
                        content = parse_related_artist(data)
                    elif page_type == "MUSIC_PAGE_TYPE_PLAYLIST":
                        content = parse_playlist(data)
                    elif page_type == "MUSIC_PAGE_TYPE_PODCAST_SHOW_DETAIL_PAGE":
                        content = parse_podcast(data)
                elif data := nav(result, [MRLIR], True):
                    content = parse_song_flat(data)
                elif data := nav(result, [MMRIR], True):
                    content = parse_episode(data)
                else:
                    continue

                contents.append(content)

        items.append({"title": title, "contents": contents})
    return items


def parse_content_list(results, parse_func, key=MTRIR):
    contents = []
    for result in results:
        contents.append(parse_func(result[key]))

    return contents


def parse_album(result):
    album = {
        "title": nav(result, TITLE_TEXT),
        "type": nav(result, SUBTITLE),
        "artists": [parse_id_name(x) for x in nav(result, ["subtitle", "runs"]) if "navigationEndpoint" in x],
        "browseId": nav(result, TITLE + NAVIGATION_BROWSE_ID),
        "audioPlaylistId": nav(result, THUMBNAIL_OVERLAY, True),
        "thumbnails": nav(result, THUMBNAIL_RENDERER),
        "isExplicit": nav(result, SUBTITLE_BADGE_LABEL, True) is not None,
    }

    if (year := nav(result, SUBTITLE2, True)) and year.isnumeric():
        album["year"] = year

    return album


def parse_single(result):
    return {
        "title": nav(result, TITLE_TEXT),
        "year": nav(result, SUBTITLE, True),
        "browseId": nav(result, TITLE + NAVIGATION_BROWSE_ID),
        "thumbnails": nav(result, THUMBNAIL_RENDERER),
    }


def parse_song(result):
    song = {
        "title": nav(result, TITLE_TEXT),
        "videoId": nav(result, NAVIGATION_VIDEO_ID),
        "playlistId": nav(result, NAVIGATION_PLAYLIST_ID, True),
        "thumbnails": nav(result, THUMBNAIL_RENDERER),
    }
    song.update(parse_song_runs(nav(result, SUBTITLE_RUNS)))
    return song


def parse_song_flat(data):
    columns = [get_flex_column_item(data, i) for i in range(0, len(data["flexColumns"]))]
    song = {
        "title": nav(columns[0], TEXT_RUN_TEXT),
        "videoId": nav(columns[0], TEXT_RUN + NAVIGATION_VIDEO_ID, True),
        "artists": parse_song_artists(data, 1),
        "thumbnails": nav(data, THUMBNAILS),
        "isExplicit": nav(data, BADGE_LABEL, True) is not None,
    }
    if len(columns) > 2 and columns[2] is not None and "navigationEndpoint" in nav(columns[2], TEXT_RUN):
        song["album"] = {
            "name": nav(columns[2], TEXT_RUN_TEXT),
            "id": nav(columns[2], TEXT_RUN + NAVIGATION_BROWSE_ID),
        }
    else:
        song["views"] = nav(columns[1], ["text", "runs", -1, "text"]).split(" ")[0]

    return song


def parse_video(result):
    runs = nav(result, SUBTITLE_RUNS)
    artists_len = get_dot_separator_index(runs)
    videoId = nav(result, NAVIGATION_VIDEO_ID, True)
    if not videoId:
        videoId = next(
            video_id
            for entry in nav(result, MENU_ITEMS)
            if (video_id := nav(entry, MENU_SERVICE + QUEUE_VIDEO_ID, True))
        )
    return {
        "title": nav(result, TITLE_TEXT),
        "videoId": videoId,
        "artists": parse_song_artists_runs(runs[:artists_len]),
        "playlistId": nav(result, NAVIGATION_PLAYLIST_ID, True),
        "thumbnails": nav(result, THUMBNAIL_RENDERER, True),
        "views": runs[-1]["text"].split(" ")[0],
    }


def parse_playlist(data):
    playlist = {
        "title": nav(data, TITLE_TEXT),
        "playlistId": nav(data, TITLE + NAVIGATION_BROWSE_ID)[2:],
        "thumbnails": nav(data, THUMBNAIL_RENDERER),
    }
    subtitle = data["subtitle"]
    if "runs" in subtitle:
        playlist["description"] = "".join([run["text"] for run in subtitle["runs"]])
        if len(subtitle["runs"]) == 3 and re.search(r"\d+ ", nav(data, SUBTITLE2)):
            playlist["count"] = nav(data, SUBTITLE2).split(" ")[0]
            playlist["author"] = parse_song_artists_runs(subtitle["runs"][:1])

    return playlist


def parse_related_artist(data):
    subscribers = nav(data, SUBTITLE, True)
    if subscribers:
        subscribers = subscribers.split(" ")[0]
    return {
        "title": nav(data, TITLE_TEXT),
        "browseId": nav(data, TITLE + NAVIGATION_BROWSE_ID),
        "subscribers": subscribers,
        "thumbnails": nav(data, THUMBNAIL_RENDERER),
    }


def parse_watch_playlist(data):
    return {
        "title": nav(data, TITLE_TEXT),
        "playlistId": nav(data, NAVIGATION_WATCH_PLAYLIST_ID),
        "thumbnails": nav(data, THUMBNAIL_RENDERER),
    }