from app.db import (
    Base as MasterBase,
    DbManager,
)
from app.db.utils import (
    album_to_dataclass,
    albums_to_dataclasses,
    artist_to_dataclass,
    artists_to_dataclasses,
    track_to_dataclass,
    tracks_to_dataclasses,
)
from app.models import Album as AlbumModel
from app.utils.remove_duplicates import remove_duplicates
from app.db import engine

from sqlalchemy import JSON, Boolean, Integer, String, and_, delete, select, update
from sqlalchemy.orm import Mapped, mapped_column, DeclarativeBase


from typing import Any, Iterable, Optional


def create_all():
    """
    Create all the tables defined in this file.
    """
    Base.metadata.create_all(engine)


class Base(MasterBase, DeclarativeBase):
    @classmethod
    def get_all_hashes(cls):
        with DbManager() as conn:
            if cls.__tablename__ == "track":
                stmt = select(TrackTable.trackhash)
            elif cls.__tablename__ == "album":
                stmt = select(AlbumTable.albumhash)
            elif cls.__tablename__ == "artist":
                stmt = select(ArtistTable.artisthash)

            result = conn.execute(stmt)
            return {row[0] for row in result.fetchall()}

    @classmethod
    def set_is_favorite(cls, hash: str, is_favorite: bool):
        """
        Set the 'is_favorite' flag for a specific hash.

        Args:
            hash (str): The hash value.
            is_favorite (bool): The value of the 'is_favorite' flag.
        """
        with DbManager(commit=True) as conn:
            if cls.__tablename__ == "track":
                stmt = (
                    update(cls)
                    .where(TrackTable.trackhash == hash)
                    .values(is_favorite=is_favorite)
                )
            elif cls.__tablename__ == "album":
                stmt = (
                    update(cls)
                    .where(AlbumTable.albumhash == hash)
                    .values(is_favorite=is_favorite)
                )
            elif cls.__tablename__ == "artist":
                stmt = (
                    update(cls)
                    .where(ArtistTable.artisthash == hash)
                    .values(is_favorite=is_favorite)
                )

            conn.execute(stmt)


class TrackTable(Base):
    __tablename__ = "track"

    id: Mapped[int] = mapped_column(init=False, primary_key=True)
    album: Mapped[str] = mapped_column(String())
    albumartists: Mapped[list[dict[str, str]]] = mapped_column(JSON())
    albumhash: Mapped[str] = mapped_column(String(), index=True)
    artisthashes: Mapped[list[str]] = mapped_column(JSON(), index=True)
    artists: Mapped[list[dict[str, str]]] = mapped_column(JSON(), index=True)
    bitrate: Mapped[int] = mapped_column(Integer())
    copyright: Mapped[Optional[str]] = mapped_column(String())
    date: Mapped[int] = mapped_column(Integer(), nullable=True)
    disc: Mapped[int] = mapped_column(Integer())
    duration: Mapped[int] = mapped_column(Integer())
    filepath: Mapped[str] = mapped_column(String(), unique=True)
    folder: Mapped[str] = mapped_column(String(), index=True)
    genrehashes: Mapped[list[str]] = mapped_column(JSON(), index=True)
    genres: Mapped[Optional[list[dict[str, str]]]] = mapped_column(JSON())
    last_mod: Mapped[float] = mapped_column(Integer())
    og_album: Mapped[str] = mapped_column(String())
    og_title: Mapped[str] = mapped_column(String())
    title: Mapped[str] = mapped_column(String())
    track: Mapped[int] = mapped_column(Integer())
    trackhash: Mapped[str] = mapped_column(String(), index=True)
    is_favorite: Mapped[Optional[bool]] = mapped_column(Boolean())
    playcount: Mapped[int] = mapped_column(Integer())
    extra: Mapped[Optional[dict[str, Any]]] = mapped_column(JSON())

    @classmethod
    def get_all(cls):
        with DbManager() as conn:
            result = conn.execute(select(cls))
            return tracks_to_dataclasses(result.fetchall())

    @classmethod
    def get_tracks_by_filepaths(cls, filepaths: list[str]):
        with DbManager() as conn:
            result = conn.execute(
                select(TrackTable).where(TrackTable.filepath.in_(filepaths))
            )
            return tracks_to_dataclasses(result.fetchall())

    @classmethod
    def get_tracks_by_albumhash(cls, albumhash: str):
        with DbManager() as conn:
            result = conn.execute(
                select(TrackTable).where(TrackTable.albumhash == albumhash)
            )
            tracks = tracks_to_dataclasses(result.fetchall())
            return remove_duplicates(tracks, is_album_tracks=True)

    @classmethod
    def get_track_by_trackhash(cls, hash: str, filepath: str = ""):
        with DbManager() as conn:
            if filepath:
                result = conn.execute(
                    select(TrackTable)
                    .where(
                        and_(
                            TrackTable.trackhash == hash,
                            TrackTable.filepath == filepath,
                        )
                    )
                    .order_by(TrackTable.bitrate.desc())
                )
            else:
                result = conn.execute(
                    select(TrackTable).where(TrackTable.trackhash == hash)
                )

            track = result.fetchone()

            if track:
                return track_to_dataclass(track)

    @classmethod
    def get_tracks_by_artisthash(cls, artisthash: str):
        with DbManager() as conn:
            result = conn.execute(
                select(TrackTable).where(TrackTable.artists.contains(artisthash))
            )
            return tracks_to_dataclasses(result.fetchall())

    @classmethod
    def get_tracks_in_path(cls, path: str):
        with DbManager() as conn:
            result = conn.execute(
                select(TrackTable)
                .where(TrackTable.filepath.contains(path))
                .order_by(TrackTable.last_mod)
            )
            return tracks_to_dataclasses(result.fetchall())

    @classmethod
    def get_tracks_by_trackhashes(cls, hashes: Iterable[str], limit: int | None = None):
        with DbManager() as conn:
            result = conn.execute(
                select(TrackTable).where(TrackTable.trackhash.in_(hashes)).limit(limit)
            )
            return tracks_to_dataclasses(result.fetchall())

    @classmethod
    def remove_tracks_by_filepaths(cls, filepaths: set[str]):
        with DbManager(commit=True) as conn:
            conn.execute(delete(TrackTable).where(TrackTable.filepath.in_(filepaths)))


class AlbumTable(Base):
    __tablename__ = "album"

    id: Mapped[int] = mapped_column(primary_key=True)
    albumartists: Mapped[list[dict[str, str]]] = mapped_column(JSON(), index=True)
    artisthashes: Mapped[list[str]] = mapped_column(JSON(), index=True)
    albumhash: Mapped[str] = mapped_column(String(), unique=True, index=True)
    base_title: Mapped[str] = mapped_column(String())
    color: Mapped[Optional[str]] = mapped_column(String())
    created_date: Mapped[int] = mapped_column(Integer())
    date: Mapped[int] = mapped_column(Integer())
    duration: Mapped[int] = mapped_column(Integer())
    genrehashes: Mapped[list[str]] = mapped_column(JSON(), nullable=True, index=True)
    genres: Mapped[str] = mapped_column(JSON())
    og_title: Mapped[str] = mapped_column(String())
    title: Mapped[str] = mapped_column(String())
    trackcount: Mapped[int] = mapped_column(Integer())
    is_favorite: Mapped[Optional[bool]] = mapped_column(Boolean())
    extra: Mapped[Optional[dict[str, Any]]] = mapped_column(JSON())

    @classmethod
    def get_all(cls):
        with DbManager() as conn:
            result = conn.execute(select(AlbumTable))
            all = result.fetchall()
            return albums_to_dataclasses(all)

    @classmethod
    def get_album_by_albumhash(cls, hash: str):
        with DbManager() as conn:
            result = conn.execute(
                select(AlbumTable).where(AlbumTable.albumhash == hash)
            )
            album = result.fetchone()

            if album:
                return album_to_dataclass(album)

    @classmethod
    def get_albums_by_albumhashes(cls, hashes: Iterable[str], limit: int | None = None):
        with DbManager() as conn:
            result = conn.execute(
                select(AlbumTable).where(AlbumTable.albumhash.in_(hashes)).limit(limit)
            )
            return albums_to_dataclasses(result.fetchall())

    @classmethod
    def get_albums_by_artisthashes(cls, artisthashes: list[str]):
        with DbManager() as conn:
            albums: list[AlbumModel] = []

            for artist in artisthashes:
                result = conn.execute(
                    # NOTE: The artist dict keys need to in the same order they appear in the db for this to work!
                    select(AlbumTable).where(AlbumTable.albumartists.contains(artist))
                )
                albums.extend(albums_to_dataclasses(result.fetchall()))

            return albums

    @classmethod
    def get_albums_by_base_title(cls, base_title: str):
        with DbManager() as conn:
            result = conn.execute(
                select(AlbumTable).where(AlbumTable.base_title == base_title)
            )
            return albums_to_dataclasses(result.fetchall())

    @classmethod
    def get_albums_by_artisthash(cls, artisthash: str):
        with DbManager() as conn:
            result = conn.execute(
                select(AlbumTable).where(AlbumTable.artisthashes.contains(artisthash))
            )
            return albums_to_dataclasses(result.all())


class ArtistTable(Base):
    __tablename__ = "artist"

    id: Mapped[int] = mapped_column(primary_key=True)
    albumcount: Mapped[int] = mapped_column(Integer())
    artisthash: Mapped[str] = mapped_column(String(), unique=True, index=True)
    created_date: Mapped[int] = mapped_column(Integer())
    date: Mapped[int] = mapped_column(Integer())
    duration: Mapped[int] = mapped_column(Integer())
    genrehashes: Mapped[list[str]] = mapped_column(JSON(), nullable=True, index=True)
    genres: Mapped[str] = mapped_column(JSON())
    name: Mapped[str] = mapped_column(String(), index=True)
    trackcount: Mapped[int] = mapped_column(Integer())
    is_favorite: Mapped[Optional[bool]] = mapped_column(Boolean())
    extra: Mapped[Optional[dict[str, Any]]] = mapped_column(JSON())

    @classmethod
    def get_all(cls):
        with DbManager() as conn:
            result = conn.execute(select(cls))
            all = result.fetchall()
            return artists_to_dataclasses(all)

    @classmethod
    def get_artist_by_hash(cls, artisthash: str):
        with DbManager() as conn:
            result = conn.execute(
                select(ArtistTable).where(ArtistTable.artisthash == artisthash)
            )
            return artist_to_dataclass(result.fetchone())

    @classmethod
    def get_artisthashes_not_in(cls, artisthashes: list[str]):
        with DbManager() as conn:
            result = conn.execute(
                select(ArtistTable.artisthash, ArtistTable.name).where(
                    ~ArtistTable.artisthash.in_(artisthashes)
                )
            )
            return [{"artisthash": row[0], "name": row[1]} for row in result.fetchall()]

    @classmethod
    def get_artists_by_artisthashes(
        cls, hashes: Iterable[str], limit: int | None = None
    ):
        with DbManager() as conn:
            result = conn.execute(
                select(ArtistTable)
                .where(ArtistTable.artisthash.in_(hashes))
                .limit(limit)
            )
            return artists_to_dataclasses(result.fetchall())