from datetime import datetime
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin
from app.extensions import db, login_manager


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

    id = db.Column(db.Integer, primary_key=True)
    school_id = db.Column(db.Integer, db.ForeignKey('schools.id'), nullable=True)
    name = db.Column(db.String(150), nullable=False)
    email = db.Column(db.String(120), unique=True, nullable=False)
    password_hash = db.Column(db.String(255), nullable=False)
    role = db.Column(db.Enum('superadmin', 'admin', 'guru', 'murid', name='user_role'), nullable=False)
    language = db.Column(db.String(5), default='id')
    is_active = db.Column(db.Boolean, default=True)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

    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)

    @property
    def is_superadmin(self):
        return self.role == 'superadmin'

    @property
    def is_admin(self):
        return self.role == 'admin'

    @property
    def is_guru(self):
        return self.role == 'guru'

    @property
    def is_murid(self):
        return self.role == 'murid'

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


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