Let’s dive in by defining the functionality and the structure we are going to have.

• Ability to create, read, update, and delete tasks.
• User profile with CRUD operations.
• User authentication.
• The user profile picture is always great for personalization, so we will also cover file uploading.
• And we want our users to be safe, so we will encrypt user passwords in the database.
• And we would like to run operations on tasks using their id, so we will cover that as well.

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Let’s structure the app source -

• Index.js — our index app file to run.
• Routers — We will put our users and tasks functionality into different files to reduce the complexity of our API.
• Models —Here we will define models to store data in the database in a good structure.
• Middleware — Initially we only have one which is authentication, but this is a good structure for future use when we might want to add more.
• Emails — We are going to use Sendgrid to send a few automated emails to our users on certain operations.
• DB — And our database.
• Other than the source files, we will have our default package and git ignore(if used) file.

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