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 OperationCriteria(PyEnum):
    MISSION_ALIGNMENT = "MISSION_ALIGNMENT"
    TECHNICAL_FEASIBILITY = "TECHNICAL_FEASIBILITY"
    COST_EFFICIENCY = "COST_EFFICIENCY"
    RISK_ASSESSMENT = "RISK_ASSESSMENT"


class ProposalDetailAnalysis(Base):
    __tablename__ = "proposal_detail_analyses"

    id = Column(UUID(as_uuid=True), primary_key=True, nullable=False)
    proposal_id = Column(
        UUID(as_uuid=True),
        ForeignKey("proposals.id", ondelete="CASCADE"),
        nullable=False,
    )
    ai_assessment_result = Column(String, nullable=False)
    confidence = Column(Float, nullable=False)
    operation_criteria = Column(Enum(OperationCriteria), nullable=False)
    created_at = Column(DateTime, nullable=False, default=func.now())
    updated_at = Column(
        DateTime, nullable=False, default=func.now(), onupdate=func.now()
    )