from sqlalchemy import Column, Integer, String, DateTime, Boolean, ForeignKey, UniqueConstraint, Index
from sqlalchemy.sql import func
from app.database import Base


class Playlist(Base):
    __tablename__ = "playlists"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, nullable=False)
    spotify_id = Column(String, nullable=False, unique=True)
    spotify_type = Column(String, nullable=False, default="playlist")  # playlist | album | artist | track
    description = Column(String, default="")
    image_url = Column(String, default="")
    emoji = Column(String, default="")  # si está definido, reemplaza la imagen
    created_at = Column(DateTime(timezone=True), server_default=func.now())


class VotingConfig(Base):
    """Single-row table — always query .first()."""
    __tablename__ = "voting_config"

    id = Column(Integer, primary_key=True)
    start_time = Column(String, nullable=False, default="12:00")  # "HH:MM"
    end_time = Column(String, nullable=False, default="13:00")    # "HH:MM"
    is_active = Column(Boolean, default=False, nullable=False)
    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())


class Vote(Base):
    __tablename__ = "votes"

    id = Column(Integer, primary_key=True)
    playlist_id = Column(Integer, ForeignKey("playlists.id", ondelete="CASCADE"), nullable=False)
    voter_token = Column(String, nullable=False)
    voted_at = Column(DateTime(timezone=True), nullable=False)

    __table_args__ = (Index("ix_vote_voter_token_time", "voter_token", "voted_at"),)


class PlayHistory(Base):
    __tablename__ = "play_history"

    id = Column(Integer, primary_key=True)
    track_id = Column(String, nullable=False)
    track_name = Column(String, nullable=False)
    artists = Column(String, nullable=False)   # "Artist1, Artist2"
    genres = Column(String, default="")        # "rock, pop"
    played_at = Column(DateTime(timezone=True), nullable=False)

    __table_args__ = (UniqueConstraint("track_id", "played_at", name="uq_track_played_at"),)