from app import db, login_manager
from flask_login import UserMixin
from werkzeug.security import generate_password_hash, check_password_hash
from app.utils.time_utils import now_eastern

@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))

class User(UserMixin, db.Model):
    __tablename__ = 'users'

    id            = db.Column(db.Integer, primary_key=True)
    username      = db.Column(db.String(100), unique=True, nullable=False, index=True)
    email         = db.Column(db.String(255), unique=True, nullable=False, index=True)
    password_hash = db.Column(db.String(255), nullable=False)
    role          = db.Column(db.Enum('admin', 'supervisor', 'inspector'), nullable=False)
    created_at    = db.Column(db.DateTime, default=now_eastern)
    active        = db.Column(db.Boolean, default=True, nullable=False)

    # Relationships
    inspections = db.relationship('Inspection', backref='inspector', lazy='dynamic')

    # ── Flask-Login integration ────────────────────────────────────────────
    # Override UserMixin.is_active so that disabled accounts are rejected
    # automatically by login_required and login_user() without any extra code.
    @property
    def is_active(self):
        return self.active

    def set_password(self, password):
        self.password_hash = generate_password_hash(password)

    def check_password(self, password):
        return check_password_hash(self.password_hash, password)

    def __repr__(self):
        return f'<User {self.username}>'