Title

"""
These imports define the key objects
"""

from flask import Flask
from flask_sqlalchemy import SQLAlchemy

"""
These object and definitions are used throughout the Jupyter Notebook.
"""

# Setup of key Flask object (app)
app = Flask(__name__)
# Setup SQLAlchemy object and properties for the database (db)
database = 'sqlite:///sqlite.db'  # path and filename of database
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.config['SQLALCHEMY_DATABASE_URI'] = database
app.config['SECRET_KEY'] = 'SECRET_KEY'
db = SQLAlchemy()


# This belongs in place where it runs once per project
db.init_app(app)

import datetime
from datetime import datetime
import json

from sqlalchemy.exc import IntegrityError
from werkzeug.security import generate_password_hash, check_password_hash

class Tasks(db.Model):
    __tablename__ = 'tasks'

    # Define the Notes schema
    id = db.Column(db.Integer, primary_key=True)
    _name = db.Column(db.String(255), unique=False, nullable=False)
    _status = db.Column(db.String(255), unique=False, nullable=False)

    # Constructor of a Notes object, initializes of instance variables within object
    def __init__(self, name, status):
        self._name = name
        self._status = status

    # Returns a string representation of the Notes object, similar to java toString()
    # returns string
    def __repr__(self):
        return "Tasks(" + str(self.id) + "," + self.name + "," + str(self.status) + ")"

    # CRUD create, adds a new record to the Notes table
    # returns the object added or None in case of an error
    def create(self):
        try:
            # creates a Notes object from Notes(db.Model) class, passes initializers
            db.session.add(self)  # add prepares to persist person object to Notes table
            db.session.commit()  # SqlAlchemy "unit of work pattern" requires a manual commit
            return self
        except IntegrityError:
            db.session.remove()
            return None

    # CRUD read, returns dictionary representation of Notes object
    # returns dictionary
    def read(self):
        return {
            "id": self.id,
            "name": self.name,
            "status": self.status
        }