from enum import Enum as PyEnum

from sqlalchemy import (
    Column,
    DateTime,
    Enum,
    Float,
    ForeignKey,
    Integer,
    String,
    func,
)
from sqlalchemy.dialects.postgresql import UUID
from pydantic import BaseModel
from ._base import Base


class ProposalStatus(PyEnum):
    APPROVED = "APPROVED"
    EVALUATED = "EVALUATED"
    IN_REVIEW = "IN_REVIEW"


class GateCriteria(PyEnum):
    PASS = "PASS"
    FAIL = "FAIL"
    IN_REVIEW = "IN_REVIEW"


class Proposal(Base):
    __tablename__ = "proposals"

    id = Column(UUID(as_uuid=True), primary_key=True, nullable=False)
    rfp_id = Column(
        UUID(as_uuid=True), ForeignKey("rfps.id", ondelete="CASCADE"), nullable=False
    )
    name = Column(String, nullable=False)
    tep = Column(String, nullable=False)
    gate_criteria = Column(Enum(GateCriteria), nullable=False)
    status = Column(Enum(ProposalStatus), nullable=False)
    ai_score = Column(Float, nullable=True)
    final_score = Column(Float, nullable=True)
    created_at = Column(DateTime, nullable=False, default=func.now())
    updated_at = Column(
        DateTime, nullable=False, default=func.now(), onupdate=func.now()
    )