from sqlalchemy import DateTime, DECIMAL, ForeignKey, SmallInteger, String, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class MatchLike(Base):
    __tablename__ = "match_likes"
    __table_args__ = (UniqueConstraint("from_user_id", "to_user_id", name="uk_like"),)

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    from_user_id: Mapped[int] = mapped_column(ForeignKey("users.id"), nullable=False)
    to_user_id: Mapped[int] = mapped_column(ForeignKey("users.id"), nullable=False)
    source: Mapped[str] = mapped_column(String(20), default="manual", nullable=False)
    created_at: Mapped[DateTime] = mapped_column(DateTime, nullable=False)


class Match(Base):
    __tablename__ = "matches"
    __table_args__ = (UniqueConstraint("user_a_id", "user_b_id", name="uk_match"),)

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    user_a_id: Mapped[int] = mapped_column(ForeignKey("users.id"), nullable=False)
    user_b_id: Mapped[int] = mapped_column(ForeignKey("users.id"), nullable=False)
    match_score: Mapped[float | None] = mapped_column(DECIMAL(5, 2))
    match_type: Mapped[str] = mapped_column(String(20), default="manual", nullable=False)
    source_activity_id: Mapped[int | None] = mapped_column(ForeignKey("activities.id"))
    a_viewed: Mapped[int] = mapped_column(SmallInteger, default=0, nullable=False)
    b_viewed: Mapped[int] = mapped_column(SmallInteger, default=0, nullable=False)
    matched_at: Mapped[DateTime] = mapped_column(DateTime, nullable=False)