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


class User(UserMixin,db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(100), index=True, unique=True)
    email = db.Column(db.String(100), index=True, unique=True)
    password_hash = db.Column(db.String(100))
    #sensor_data = db.relationship('Data', backref='author', lazy='dynamic')
    sensor_name = db.relationship('Sensor',backref='author', lazy='dynamic')
    
    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 '<User {}>'.format(self.username) 
class Sensor(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(140))
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    this_data = db.relationship('Data',backref='sensor_name',lazy = 'dynamic')

    def __repr__(self):
        return '<Post {}>'.format(self.name)

class Data(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    temp = db.Column(db.Integer)
    humidity = db.Column(db.Integer)
    time = db.Column(db.DateTime, index=True, default=datetime.utcnow)
    #user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    sensor_id = db.Column(db.Integer,db.ForeignKey('sensor.id'))

    def __repr__(self):
        return '<Data {}>'.format(self.id)


@login.user_loader
def load_user(id):
    return User.query.get(int(id))