from app import db
from datetime import datetime

class SubcontractorRate(db.Model):
    __tablename__ = "subcontractor_rates"

    id = db.Column(db.Integer, primary_key=True)
    subcontractor_id = db.Column(db.Integer, db.ForeignKey("subcontractors.id"), nullable=False)
    subcontractor = db.relationship("Subcontractor", backref="rate_master")

    category = db.Column(db.String(50), nullable=False)
    item_code = db.Column(db.String(50), nullable=False)
    item_name = db.Column(db.String(200), nullable=False)
    unit = db.Column(db.String(20))
    rate = db.Column(db.Numeric(12,2), nullable=False)
    effective_from = db.Column(db.Date, nullable=False)
    effective_to = db.Column(db.Date)
    status = db.Column(db.String(20), default="Active")
    created_at = db.Column(db.DateTime, default=datetime.now)

    def __repr__(self):
        return f"<subcontractor Rate {self.item_name}>"