"""
Contains all the search routes.
"""
from typing import List
from app import helpers
from app.lib import searchlib
from flask import Blueprint
from flask import request

from server.app import instances, models

search_bp = Blueprint("search", __name__, url_prefix="/")

SEARCH_RESULTS = {
    "tracks": [],
    "albums": [],
    "artists": [],
}


class SearchResults:
    """
    Holds all the search results.
    """

    query: str = ""
    tracks: list[models.Track]
    albums: list[models.Album]
    playlists: list[models.Playlist]
    artists: list[models.Artist]


class DoSearch:
    """Class containing the methods that perform searching."""

    def __init__(self, query: str) -> None:
        """
        :param :str:`query`: the search query.
        """
        self.query = query
        SearchResults.query = query

    def search_tracks(self):
        """Calls :class:`SearchTracks` which returns the tracks that fuzzily match
        the search terms. Then adds them to the `SearchResults` store.
        """
        self.tracks = helpers.Get.get_all_tracks()
        tracks = searchlib.SearchTracks(self.tracks, self.query)()
        SearchResults.tracks = tracks

        return tracks

    def search_artists(self):
        """Calls :class:`SearchArtists` which returns the artists that fuzzily match
        the search term. Then adds them to the `SearchResults` store.
        """
        self.artists = helpers.Get.get_all_artists()
        artists = searchlib.SearchArtists(self.artists, self.query)()
        SearchResults.artists = artists

        return artists

    def search_albums(self):
        """Calls :class:`SearchAlbums` which returns the albums that fuzzily match
        the search term. Then adds them to the `SearchResults` store.
        """
        self.albums = helpers.Get.get_all_albums()
        albums = searchlib.SearchAlbums(self.albums, self.query)()
        SearchResults.albums = albums

        return albums

    def search_playlists(self):
        """Calls :class:`SearchPlaylists` which returns the playlists that fuzzily match
        the search term. Then adds them to the `SearchResults` store.
        """
        self.playlists = helpers.Get.get_all_playlists()
        playlists = searchlib.SearchPlaylists(self.playlists, self.query)
        SearchResults.playlists = playlists

        return playlists

    def search_all(self):
        """Calls all the search methods."""
        self.search_tracks()
        self.search_albums()
        self.search_artists()
        self.search_playlists()


@search_bp.route("/search/tracks", methods=["GET"])
def search_tracks():
    """
    Searches for tracks that match the search query.
    """

    query = request.args.get("q")
    if not query:
        return {"error": "No query provided"}, 400

    if SearchResults.query == query and len(SearchResults.tracks) > 0:
        return {
            "tracks": SearchResults.tracks[:5],
            "more": len(SearchResults.tracks) > 5,
        }, 200

    tracks = DoSearch(query).search_tracks()

    return {
        "tracks": tracks[:5],
        "more": len(tracks) > 5,
    }, 200


@search_bp.route("/search/albums", methods=["GET"])
def search_albums():
    """
    Searches for albums.
    """

    query = request.args.get("q")
    if not query:
        return {"error": "No query provided"}, 400

    if SearchResults.query == query and len(SearchResults.albums) > 0:
        return {
            "albums": SearchResults.albums[:6],
            "more": len(SearchResults.albums) > 6,
        }, 200

    tracks = DoSearch(query).search_albums()

    return {
        "albums": tracks[:6],
        "more": len(tracks) > 6,
    }, 200


@search_bp.route("/search/artists", methods=["GET"])
def search_artists():
    """
    Searches for artists.
    """

    query = request.args.get("q")
    if not query:
        return {"error": "No query provided"}, 400

    if SearchResults.query == query and len(SearchResults.artists) > 0:
        return {
            "artists": SearchResults.artists[:6],
            "more": len(SearchResults.artists) > 6,
        }, 200

    artists = DoSearch(query).search_artists()

    return {
        "artists": artists[:6],
        "more": len(artists) > 6,
    }, 200


@search_bp.route("/search/top", methods=["GET"])
def get_top_results():
    """
    Returns the top results for the search query.
    """

    query = request.args.get("q")
    if not query:
        return {"error": "No query provided"}, 400

    DoSearch(query).search_all()

    max = 2
    return {
        "tracks": SearchResults.tracks[:max],
        "albums": SearchResults.albums[:max],
        "artists": SearchResults.artists[:max],
        "playlists": SearchResults.playlists[:max],
    }


@search_bp.route("/search")
def search():
    """
    Returns a list of songs, albums and artists that match the search query.
    """
    query = request.args.get("q") or "Mexican girl"

    albums = searchlib.SearchAlbums(query)()
    artists_dicts = searchlib.SearchArtists(query)()

    tracks = searchlib.SearchTracks(query)()
    top_artist = artists_dicts[0]["name"]

    _tracks = searchlib.GetTopArtistTracks(top_artist)()
    tracks = [*tracks, *[t for t in _tracks if t not in tracks]]

    SEARCH_RESULTS.clear()
    SEARCH_RESULTS["tracks"] = tracks
    SEARCH_RESULTS["albums"] = albums
    SEARCH_RESULTS["artists"] = artists_dicts

    return {
        "data": [
            {"tracks": tracks[:5], "more": len(tracks) > 5},
            {"albums": albums[:6], "more": len(albums) > 6},
            {"artists": artists_dicts[:6], "more": len(artists_dicts) > 6},
        ]
    }


@search_bp.route("/search/loadmore")
def search_load_more():
    """
    Returns more songs, albums or artists from a search query.
    """
    type = request.args.get("type")
    index = int(request.args.get("index"))

    if type == "tracks":
        return {
            "tracks": SEARCH_RESULTS["tracks"][index : index + 5],
            "more": len(SEARCH_RESULTS["tracks"]) > index + 5,
        }

    elif type == "albums":
        return {
            "albums": SEARCH_RESULTS["albums"][index : index + 6],
            "more": len(SEARCH_RESULTS["albums"]) > index + 6,
        }

    elif type == "artists":
        return {
            "artists": SEARCH_RESULTS["artists"][index : index + 6],
            "more": len(SEARCH_RESULTS["artists"]) > index + 6,
        }