Calendar App

A Progressive Web App (PWA) for setting and keeping track of appointments

Primary Objective

Use a Software Engineering approach to determine the requirements and constraints of this project.

Primary Goal

Create a Progressive Web App (PWA) that is fully functional and production ready.

Software Design

Requirements

 * Users/Roles
    * Basic (Free) User
        * Subscription required
        * Ability to create and access up to five calendars, with unlimited years and appointments

    * Pro (Paid) User 
        * Paid subscription required -- Monthly or Annual
        * Ability to create an unlimited number of calendars, with unlimited years and appointments
    
  * General Requirements
    * Authentication
      * Secure connection
      * Login/out
      * User 2FA authentication w/biometrics and/or code
    * User Actions
      * Edit, reschedule (update), and delete appointments
      * Set reminders and notifications (email, push, SMS)
      * Organize appointment types by color
      * Share appointments
    * Usage
      * View on:
        * Desktop
        * Laptop
        * Tablet
        * Mobile Phone

Constraints

  * General Constraints
    * No HTTP
    * Non-subscribers cannot view or access any calendar created by registered users
    * No unverifiable email addresses
    * No sharing of subscription with other users (one acccount, one subscriber)

Implementation

  * Design and build as a Progressive Web App (PWA)
  * Use PHP, HTML, CSS, and JavaScript for codebase
  * RDBMS - MariaDB 
  * Hosting - Bluehost, with cPanel (for now)
  * Utilize packages, modules, and libraries for faster development