"""Модели запросов (заявок)."""
from datetime import datetime

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

from app.db.session import Base
from app.models.enums import RequestStatus, RequestType
from app.models.types import enum_col


class Request(Base):
    __tablename__ = "requests"

    id: Mapped[int] = mapped_column(primary_key=True)
    type: Mapped[RequestType] = mapped_column(enum_col(RequestType))
    user_id: Mapped[int | None] = mapped_column(ForeignKey("users.id"))
    region_id: Mapped[int | None] = mapped_column(ForeignKey("regions.id"))
    subject: Mapped[str | None] = mapped_column(String(300))
    body: Mapped[str | None] = mapped_column(Text)
    status: Mapped[RequestStatus] = mapped_column(
        enum_col(RequestStatus), default=RequestStatus.NEW
    )
    assigned_to: Mapped[int | None] = mapped_column(ForeignKey("users.id"))
    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()
    )

    comments: Mapped[list["RequestComment"]] = relationship(back_populates="request")


class RequestComment(Base):
    __tablename__ = "request_comments"

    id: Mapped[int] = mapped_column(primary_key=True)
    request_id: Mapped[int] = mapped_column(ForeignKey("requests.id", ondelete="CASCADE"))
    author_id: Mapped[int | None] = mapped_column(ForeignKey("users.id"))
    body: Mapped[str] = mapped_column(Text)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())

    request: Mapped[Request] = relationship(back_populates="comments")