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

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


# 添加验证码模型
class VerificationCode(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(120), nullable=False)
    code = db.Column(db.String(10), nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    expires_at = db.Column(db.DateTime, default=lambda: datetime.utcnow() + timedelta(minutes=10))
    is_used = db.Column(db.Boolean, default=False)

    @property
    def is_expired(self):
        return datetime.utcnow() > self.expires_at
class User(UserMixin, db.Model):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(120), unique=True, nullable=False)
    username = db.Column(db.String(64), nullable=False)
    password_hash = db.Column(db.String(128))
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    last_login = db.Column(db.DateTime)
    is_active = db.Column(db.Boolean, default=True)
    language = db.Column(db.String(2), default='zh')
    theme = db.Column(db.String(10), default='light')
    reset_token = db.Column(db.String(36), unique=True)

    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 generate_reset_token(self):
        self.reset_token = str(uuid.uuid4())
        return self.reset_token