"""Sound played tracking model."""

from datetime import datetime
from zoneinfo import ZoneInfo

from sqlalchemy import DateTime, ForeignKey, Integer, func, text
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database import db


class SoundPlayed(db.Model):
    """Model to track when users play sounds."""

    __tablename__ = "sound_played"

    id: Mapped[int] = mapped_column(primary_key=True)

    # Foreign keys
    user_id: Mapped[int] = mapped_column(
        Integer,
        ForeignKey("users.id"),
        nullable=False,
    )
    sound_id: Mapped[int] = mapped_column(
        Integer,
        ForeignKey("sounds.id"),
        nullable=False,
    )

    # Timestamp
    played_at: Mapped[datetime] = mapped_column(
        DateTime,
        default=lambda: datetime.now(tz=ZoneInfo("UTC")),
        nullable=False,
    )

    # Relationships
    user: Mapped["User"] = relationship("User", backref="sounds_played")
    sound: Mapped["Sound"] = relationship("Sound", backref="play_history")

    def __repr__(self) -> str:
        """Return string representation of SoundPlayed."""
        return (
            f"<SoundPlayed user_id={self.user_id} sound_id={self.sound_id} "
            f"at={self.played_at}>"
        )

    def to_dict(self) -> dict:
        """Convert sound played record to dictionary."""
        return {
            "id": self.id,
            "user_id": self.user_id,
            "sound_id": self.sound_id,
            "played_at": self.played_at.isoformat(),
            "user": (
                {
                    "id": self.user.id,
                    "name": self.user.name,
                    "email": self.user.email,
                }
                if self.user
                else None
            ),
            "sound": (
                {
                    "id": self.sound.id,
                    "name": self.sound.name,
                    "filename": self.sound.filename,
                    "type": self.sound.type,
                }
                if self.sound
                else None
            ),
        }

    @classmethod
    def create_play_record(
        cls,
        user_id: int,
        sound_id: int,
        *,
        commit: bool = True,
    ) -> "SoundPlayed":
        """Create a new sound played record."""
        play_record = cls(
            user_id=user_id,
            sound_id=sound_id,
        )

        db.session.add(play_record)
        if commit:
            db.session.commit()
        return play_record

    @classmethod
    def get_user_plays(
        cls,
        user_id: int,
        limit: int = 50,
        offset: int = 0,
    ) -> list["SoundPlayed"]:
        """Get recent plays for a specific user."""
        return (
            cls.query.filter_by(user_id=user_id)
            .order_by(cls.played_at.desc())
            .offset(offset)
            .limit(limit)
            .all()
        )

    @classmethod
    def get_sound_plays(
        cls,
        sound_id: int,
        limit: int = 50,
        offset: int = 0,
    ) -> list["SoundPlayed"]:
        """Get recent plays for a specific sound."""
        return (
            cls.query.filter_by(sound_id=sound_id)
            .order_by(cls.played_at.desc())
            .offset(offset)
            .limit(limit)
            .all()
        )

    @classmethod
    def get_recent_plays(
        cls,
        limit: int = 100,
        offset: int = 0,
    ) -> list["SoundPlayed"]:
        """Get recent plays across all users and sounds."""
        return (
            cls.query.order_by(cls.played_at.desc())
            .offset(offset)
            .limit(limit)
            .all()
        )

    @classmethod
    def get_user_play_count(cls, user_id: int) -> int:
        """Get total play count for a user."""
        return cls.query.filter_by(user_id=user_id).count()

    @classmethod
    def get_sound_play_count(cls, sound_id: int) -> int:
        """Get total play count for a sound."""
        return cls.query.filter_by(sound_id=sound_id).count()

    @classmethod
    def get_popular_sounds(
        cls,
        limit: int = 10,
        days: int | None = None,
    ) -> list[dict]:
        """Get most popular sounds with play counts."""
        from app.models.sound import Sound

        query = (
            db.session.query(
                cls.sound_id,
                func.count(cls.id).label("play_count"),
                func.max(cls.played_at).label("last_played"),
            )
            .group_by(cls.sound_id)
            .order_by(func.count(cls.id).desc())
        )

        if days:
            query = query.filter(
                cls.played_at >= text(f"datetime('now', '-{days} days')"),
            )

        results = query.limit(limit).all()

        # Get sound details
        popular_sounds = []
        for result in results:
            sound = Sound.query.get(result.sound_id)
            if sound:
                popular_sounds.append(
                    {
                        "sound": sound.to_dict(),
                        "play_count": result.play_count,
                        "last_played": (
                            result.last_played.isoformat()
                            if result.last_played
                            else None
                        ),
                    },
                )

        return popular_sounds

    @classmethod
    def get_user_stats(cls, user_id: int) -> dict:
        """Get comprehensive stats for a user."""
        from app.models.sound import Sound

        total_plays = cls.query.filter_by(user_id=user_id).count()

        if total_plays == 0:
            return {
                "total_plays": 0,
                "unique_sounds": 0,
                "favorite_sound": None,
                "first_play": None,
                "last_play": None,
            }

        # Get unique sounds count
        unique_sounds = (
            db.session.query(cls.sound_id)
            .filter_by(user_id=user_id)
            .distinct()
            .count()
        )

        # Get favorite sound
        favorite_query = (
            db.session.query(
                cls.sound_id,
                func.count(cls.id).label("play_count"),
            )
            .filter_by(user_id=user_id)
            .group_by(cls.sound_id)
            .order_by(func.count(cls.id).desc())
            .first()
        )

        favorite_sound = None
        if favorite_query:
            sound = Sound.query.get(favorite_query.sound_id)
            if sound:
                favorite_sound = {
                    "sound": sound.to_dict(),
                    "play_count": favorite_query.play_count,
                }

        # Get first and last play dates
        first_play = (
            cls.query.filter_by(user_id=user_id)
            .order_by(cls.played_at.asc())
            .first()
        )
        last_play = (
            cls.query.filter_by(user_id=user_id)
            .order_by(cls.played_at.desc())
            .first()
        )

        return {
            "total_plays": total_plays,
            "unique_sounds": unique_sounds,
            "favorite_sound": favorite_sound,
            "first_play": (
                first_play.played_at.isoformat() if first_play else None
            ),
            "last_play": (
                last_play.played_at.isoformat() if last_play else None
            ),
        }