from enum import Enum as PyEnum

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


class Weights(PyEnum):
    NONE = "NONE"
    LOW = "LOW"
    MEDIUM = "MEDIUM"
    HIGH = "HIGH"


class ComparativeWeights(Base):
    __tablename__ = "comparative_weights"
    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,
        unique=True,
    )
    technical_weight = Column(Enum(Weights, name="comparativeweights"), nullable=False)
    management_weight = Column(Enum(Weights, name="comparativeweights"), nullable=False)
    past_performance_weight = Column(
        Enum(Weights, name="comparativeweights"), nullable=False
    )
    price_weight = Column(Enum(Weights, name="comparativeweights"), nullable=False)
    strengths_weight = Column(Float, nullable=False, default=15)
    weaknesses_weight = Column(Float, nullable=False, default=5)
    flag = Column(Boolean(), nullable=True, default=False)
    created_at = Column(DateTime, nullable=False, default=func.now())
    updated_at = Column(
        DateTime, nullable=False, default=func.now(), onupdate=func.now()
    )