API - Implement Salesforce Composite API

[AMAN-BARBARIA]

Goal: Implement a library to allow Salesforce composite API requests. This lib should also manage the Salesforce access token, refreshing it as necessary.

Background: Different Salesforce actions can be performed via the composite API. It also allows us to perform multipleSalesforce operations in a single transaction. This lib would be used from services of various endpoint.

Tasks:

• Implement a lib to handle Salesforce composite requests.
• The lib should add the current Salesforce access token to the request before sending it.
• If a request fails due to an expired access token, the endpoint should automatically refresh the token and retry the request once.
• Implement error handling for other error cases, such as invalid requests or server errors.
• Write tests for the library including tests of the token refresh handling.

[AMAN-BARBARIA]

This task is required for the completion of user story:

• Account and Contact Details - As a user I want to see account and Contacts information added in salesforce to prepare for my calls AI-SalesSparrow-iOS-App#4
• Note Creation - As a user I need to write down Note post my call with leads AI-SalesSparrow-iOS-App#5
• Edit, Delete Notes - As a user I need to manage my Notes AI-SalesSparrow-iOS-App#6
• Task Creation - As a user I need to add and assign Tasks AI-SalesSparrow-iOS-App#7
• Task Creation from recommendations - As a user I need to add Tasks from suggested recommendations AI-SalesSparrow-iOS-App#8
• Edit, Delete Tasks - As a user I need to manage my Tasks AI-SalesSparrow-iOS-App#9
• Event Creation - As a user I need to create Events on a specific date time AI-SalesSparrow-iOS-App#10
• Event Creation from recommendations - As a user I need to add Events from suggested recommendations AI-SalesSparrow-iOS-App#11
• Edit, Delete Events - As a user I need to manage Events AI-SalesSparrow-iOS-App#12

[AMAN-BARBARIA]

We can make use of Interceptor Pattern to reuse the common code. eg:

• Fetch Access Token
• Decrypt with KMS
• Exception Handling
• Handle oauth access token Expiry: refresh token and retry salesforce api