import uuid
from datetime import datetime

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

from app.database import Base


class Championship(Base):
    __tablename__ = "championships"

    id: Mapped[uuid.UUID] = mapped_column(Uuid(as_uuid=True), primary_key=True, default=uuid.uuid4)
    org_id: Mapped[uuid.UUID | None] = mapped_column(Uuid(as_uuid=True), ForeignKey("organizations.id", ondelete="SET NULL"))
    title: Mapped[str] = mapped_column(String(255), nullable=False)
    subtitle: Mapped[str | None] = mapped_column(String(255))
    description: Mapped[str | None] = mapped_column(Text)
    location: Mapped[str | None] = mapped_column(String(500))
    venue: Mapped[str | None] = mapped_column(String(255))
    event_date: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
    registration_open_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
    registration_close_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
    accent_color: Mapped[str | None] = mapped_column(String(20))  # hex color e.g. #FF5CA8

    # Legacy flat fields (kept for backwards compat, replaced by relational tables in POL-7 to POL-11)
    form_url: Mapped[str | None] = mapped_column(String(2048))
    entry_fee: Mapped[float | None] = mapped_column(Float)
    video_max_duration: Mapped[int | None] = mapped_column(Integer)  # seconds

    # Status: 'draft' | 'open' | 'closed' | 'completed'
    status: Mapped[str] = mapped_column(String(20), nullable=False, default="draft")
    # Source: 'manual' | 'instagram'
    source: Mapped[str] = mapped_column(String(20), nullable=False, default="manual")
    instagram_media_id: Mapped[str | None] = mapped_column(String(255), unique=True)
    image_url: Mapped[str | None] = mapped_column(String(2048))
    raw_caption_text: Mapped[str | None] = mapped_column(Text)

    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
    )

    organization: Mapped["Organization | None"] = relationship(back_populates="championships")  # type: ignore[name-defined]
    registrations: Mapped[list["Registration"]] = relationship(back_populates="championship", cascade="all, delete-orphan")  # type: ignore[name-defined]
    participant_list: Mapped["ParticipantList | None"] = relationship(back_populates="championship", uselist=False, cascade="all, delete-orphan")  # type: ignore[name-defined]
    disciplines: Mapped[list["Discipline"]] = relationship(back_populates="championship", cascade="all, delete-orphan")  # type: ignore[name-defined]
    styles: Mapped[list["Style"]] = relationship(back_populates="championship", cascade="all, delete-orphan")  # type: ignore[name-defined]
    fees: Mapped["Fee | None"] = relationship(back_populates="championship", uselist=False, cascade="all, delete-orphan")  # type: ignore[name-defined]
    rules: Mapped[list["Rule"]] = relationship(back_populates="championship", cascade="all, delete-orphan")  # type: ignore[name-defined]
    judges_list: Mapped[list["Judge"]] = relationship(back_populates="championship", cascade="all, delete-orphan")  # type: ignore[name-defined]