import uuid
from datetime import date, datetime

from sqlalchemy import Date, DateTime, ForeignKey, String, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base_class import Base


class StartupFeasibility(Base):
    __tablename__ = "startup_feasibility"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    study_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("studies.id"), index=True, nullable=False)
    site_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("sites.id"), nullable=True)
    submit_date: Mapped[date | None] = mapped_column(Date, nullable=True)
    accept_date: Mapped[date | None] = mapped_column(Date, nullable=True)
    approved_date: Mapped[date | None] = mapped_column(Date, nullable=True)
    project_no: Mapped[str | None] = mapped_column(String(100), nullable=True)
    created_by: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
    )