import uuid
from datetime import datetime

from sqlalchemy import String, Integer, Index, func, DateTime
from sqlalchemy import Uuid
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base, JSONType


class PlatformRuleVersion(Base):
    __tablename__ = "platform_rule_versions"

    id: Mapped[uuid.UUID] = mapped_column(
        Uuid(as_uuid=True),
        primary_key=True,
        default=uuid.uuid4,
    )
    rule_id: Mapped[str] = mapped_column(String(100), nullable=False, index=True)
    platform: Mapped[str] = mapped_column(String(50), nullable=False)
    version: Mapped[int] = mapped_column(Integer, nullable=False)
    rule_data: Mapped[dict] = mapped_column(JSONType, nullable=False)
    change_summary: Mapped[str | None] = mapped_column(String(500), nullable=True)
    created_by: Mapped[str | None] = mapped_column(String(100), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())

    __table_args__ = (
        Index("idx_rule_versions_rule_id", "rule_id"),
        Index("idx_rule_versions_platform", "platform"),
    )