import uuid
from datetime import date, datetime

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

from app.db.base_class import Base


class Site(Base):
    __tablename__ = "sites"

    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)
    name: Mapped[str] = mapped_column(String(200), nullable=False)
    city: Mapped[str | None] = mapped_column(String(100), nullable=True)
    pi_name: Mapped[str | None] = mapped_column(String(100), nullable=True)
    contact: Mapped[str | None] = mapped_column(String(100), nullable=True)
    is_active: Mapped[bool] = mapped_column(Boolean, nullable=False, server_default="true")
    enrollment_target: Mapped[int | None] = mapped_column(Integer, nullable=True)
    enrollment_plan_start_date: Mapped[date | None] = mapped_column(Date, nullable=True)
    enrollment_plan_end_date: Mapped[date | None] = mapped_column(Date, nullable=True)
    enrollment_plan_note: Mapped[str | None] = mapped_column(Text, nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())