"""Appeal model for moderation actions."""

from datetime import datetime
from typing import Optional

from sqlalchemy import (
    Column,
    Enum,
    ForeignKey,
    Integer,
    String,
    Text,
    DateTime,
    CheckConstraint,
)
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func

from app.database import Base


class Appeal(Base):
    __tablename__ = "appeals"

    # Status values
    APPEAL_STATUS = Enum(
        "pending", "approved", "rejected",
        name="appeal_status",
        create_type=False,
    )

    id = Column(Integer, primary_key=True, index=True)
    moderation_action_id = Column(
        Integer,
        ForeignKey("moderation_actions.id", ondelete="CASCADE"),
        nullable=False,
    )
    user_id = Column(
        Integer,
        ForeignKey("users.id", ondelete="CASCADE"),
        nullable=False,
    )
    reason = Column(Text, nullable=False)
    status = Column(
        APPEAL_STATUS,
        nullable=False,
        default=APPEAL_STATUS.PENDING,
    )
    reviewed_by = Column(
        Integer,
        ForeignKey("users.id", ondelete="SET NULL"),
        nullable=True,
    )
    reviewed_at = Column(DateTime(timezone=True), nullable=True)
    created_at = Column(
        DateTime(timezone=True),
        server_default=func.now(),
        nullable=False,
    )

    # Relationships
    moderation_action = relationship("ModerationAction", back_populates="appeals")
    reviewer = relationship(
        "User",
        foreign_keys=[reviewed_by],
        backref="reviewed_appeals",
    )

    __table_args__ = (
        CheckConstraint(
            "status IN ('pending', 'approved', 'rejected')",
            name="check_appeal_status",
        ),
    )