"""Stream model for storing streaming service links to sounds."""

from datetime import datetime
from typing import TYPE_CHECKING, Optional
from zoneinfo import ZoneInfo

from sqlalchemy import DateTime, ForeignKey, Integer, String, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database import db

if TYPE_CHECKING:
    from app.models.sound import Sound


class Stream(db.Model):
    """Model for storing streaming service information linked to sounds."""

    __tablename__ = "stream"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    service: Mapped[str] = mapped_column(String(50), nullable=False)
    service_id: Mapped[str] = mapped_column(String(255), nullable=False)
    sound_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("sound.id"), nullable=False
    )
    url: Mapped[str] = mapped_column(Text, nullable=False)
    title: Mapped[Optional[str]] = mapped_column(String(500), nullable=True)
    track: Mapped[Optional[str]] = mapped_column(String(500), nullable=True)
    artist: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)
    album: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)
    genre: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
    status: Mapped[str] = mapped_column(String(50), nullable=False, default="active")
    created_at: Mapped[datetime] = mapped_column(
        DateTime,
        default=lambda: datetime.now(tz=ZoneInfo("UTC")),
        nullable=False,
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime,
        default=lambda: datetime.now(tz=ZoneInfo("UTC")),
        onupdate=lambda: datetime.now(tz=ZoneInfo("UTC")),
        nullable=False,
    )

    # Relationships
    sound: Mapped["Sound"] = relationship("Sound", back_populates="streams")

    def __repr__(self) -> str:
        """String representation of the stream."""
        return f"<Stream(id={self.id}, service='{self.service}', service_id='{self.service_id}', sound_id={self.sound_id})>"

    def to_dict(self) -> dict:
        """Convert stream to dictionary representation."""
        return {
            "id": self.id,
            "service": self.service,
            "service_id": self.service_id,
            "sound_id": self.sound_id,
            "url": self.url,
            "title": self.title,
            "track": self.track,
            "artist": self.artist,
            "album": self.album,
            "genre": self.genre,
            "status": self.status,
            "created_at": self.created_at.isoformat() if self.created_at else None,
            "updated_at": self.updated_at.isoformat() if self.updated_at else None,
        }

    @classmethod
    def create_stream(
        cls,
        service: str,
        service_id: str,
        sound_id: int,
        url: str,
        title: Optional[str] = None,
        track: Optional[str] = None,
        artist: Optional[str] = None,
        album: Optional[str] = None,
        genre: Optional[str] = None,
        status: str = "active",
        commit: bool = True,
    ) -> "Stream":
        """Create a new stream record."""
        stream = cls(
            service=service,
            service_id=service_id,
            sound_id=sound_id,
            url=url,
            title=title,
            track=track,
            artist=artist,
            album=album,
            genre=genre,
            status=status,
        )

        db.session.add(stream)
        if commit:
            db.session.commit()

        return stream

    @classmethod
    def find_by_service_and_id(
        cls, service: str, service_id: str
    ) -> Optional["Stream"]:
        """Find stream by service and service_id."""
        return cls.query.filter_by(service=service, service_id=service_id).first()

    @classmethod
    def find_by_sound(cls, sound_id: int) -> list["Stream"]:
        """Find all streams for a specific sound."""
        return cls.query.filter_by(sound_id=sound_id).all()

    @classmethod
    def find_by_service(cls, service: str) -> list["Stream"]:
        """Find all streams for a specific service."""
        return cls.query.filter_by(service=service).all()

    @classmethod
    def find_by_status(cls, status: str) -> list["Stream"]:
        """Find all streams with a specific status."""
        return cls.query.filter_by(status=status).all()

    @classmethod
    def find_active_streams(cls) -> list["Stream"]:
        """Find all active streams."""
        return cls.query.filter_by(status="active").all()

    def update_metadata(
        self,
        title: Optional[str] = None,
        track: Optional[str] = None,
        artist: Optional[str] = None,
        album: Optional[str] = None,
        genre: Optional[str] = None,
        commit: bool = True,
    ) -> None:
        """Update stream metadata."""
        if title is not None:
            self.title = title
        if track is not None:
            self.track = track
        if artist is not None:
            self.artist = artist
        if album is not None:
            self.album = album
        if genre is not None:
            self.genre = genre

        if commit:
            db.session.commit()

    def set_status(self, status: str, commit: bool = True) -> None:
        """Update stream status."""
        self.status = status
        if commit:
            db.session.commit()

    def is_active(self) -> bool:
        """Check if stream is active."""
        return self.status == "active"

    def get_display_name(self) -> str:
        """Get a display name for the stream (title or track or service_id)."""
        return self.title or self.track or self.service_id