"""Admin model."""
from datetime import datetime
from flask_login import UserMixin
from werkzeug.security import generate_password_hash, check_password_hash
from app.extensions import db
from app.models._schema import APP_SCHEMA


class Admin(UserMixin, db.Model):
    """Administrator — tabel terpisah dari User untuk keamanan."""
    __tablename__ = 'admins'
    __table_args__ = {'schema': APP_SCHEMA}

    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    email = db.Column(db.String(200), unique=True, nullable=False)
    password_hash = db.Column(db.String(256), nullable=False)
    is_superadmin = db.Column(db.Boolean, default=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    last_login = db.Column(db.DateTime)

    def get_id(self):
        """Flask-Login: prefix 'admin:' untuk membedakan dari User."""
        return f'admin:{self.id}'

    def set_password(self, password):
        self.password_hash = generate_password_hash(password, method='pbkdf2:sha256')

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

    @property
    def display_name(self):
        return self.username

    def to_dict(self):
        return {
            'id': self.id,
            'username': self.username,
            'email': self.email,
            'is_superadmin': self.is_superadmin,
            'created_at': self.created_at.isoformat() if self.created_at else None,
            'last_login': self.last_login.isoformat() if self.last_login else None,
        }