from flask_bcrypt import Bcrypt
from Market import db, bcrypt, login_manager
from flask_login import UserMixin
@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))

class User(db.Model,UserMixin):
    id = db.Column(db.Integer(),primary_key=True)
    username = db.Column(db.String(length=30),nullable=False,unique=True)
    email_address = db.Column(db.String(length=50),nullable=False,unique=True)
    password_hash = db.Column(db.String(length=60),nullable=False)
    budget = db.Column(db.Integer(),nullable=False,default=1000)
    items = db.relationship('Item', backref='owned_user',lazy=True)

    @property
    def prettier_budget(self):
        if(len(str(self.budget))) >= 4:
            return f'{str(self.budget)[:-3]},{str(self.budget)[-3:]}$'
        else:
            return f'{self.budget}$'
    @property
    def password(self):
        return self.password

    @password.setter
    def password(self,plain_text_password):
        self.password_hash = bcrypt.generate_password_hash(plain_text_password).decode('utf-8')
    
    def check_password_correction(self,attempted_password):
        return bcrypt.check_password_hash(self.password_hash,attempted_password)
    
    def can_purchase(self,item_obj):
        return self.budget >= item_obj.price
    
    def can_sell(self,item_obj):
        return item_obj in self.items

class Item(db.Model):
    id = db.Column(db.Integer(),primary_key=True)
    name = db.Column(db.String(length=38),nullable=False,unique=True)
    price = db.Column(db.Integer(),nullable=False)
    barcode = db.Column(db.String(length=12),nullable=False,unique=True)
    description = db.Column(db.String(length=1924),nullable=False,unique=True)
    owner = db.Column(db.Integer(),db.ForeignKey('user.id'))

    def __repr__(self):
        return f'Item {self.name}'
    