Building the backend of the board page

Now, let's take a look at what we will need to do to implement the backend of the board page. In a nutshell, we will need to do the following:

• Create the domain models of the card list, the card, and BoardMember
• Create the application services
• Create the repository implementations
• Create the API handlers in controllers

APIs for the board page

First of all, let's see the APIs that we will need to implement:

• The API to get a board
• The API to add a board member
• The API to add a card list
• The API to change the positions of card lists
• The API to add a card
• The API to change card positions

Let's take a look at each one of them, as follows:

• Get board API: This will be a GET request sent to /api/boards/{boardId}. Through this API, we will return the board information, as well as the board members, card lists, and its cards. If this is a team board, we will also need to return the team information. The following is how the response will look:

{
  "team": {
    "name": "Sales...