from datetime import datetime
from typing import Optional
from sqlalchemy import String, Text, Integer, DateTime, ForeignKey, func
from sqlalchemy.orm import Mapped, mapped_column
from app.database import Base


class IncomingEmail(Base):
    __tablename__ = "incoming_emails"

    id: Mapped[int] = mapped_column(primary_key=True)
    task_id: Mapped[Optional[int]] = mapped_column(ForeignKey("tasks.id", ondelete="SET NULL"), nullable=True)
    subject: Mapped[str] = mapped_column(String(500), default="")
    from_email: Mapped[str] = mapped_column(String(255), default="")
    to_email: Mapped[str] = mapped_column(String(255), default="")
    body_raw: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    ai_draft: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    # JSON array of filenames: ["file1.pdf", "file2.jpg"]
    attachments: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    received_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())