[Feature] Create API Endpoints for Admin Member Management Page

[dyzhuu]

Description:

Create the relevant endpoints for the admin member page. Create APIs for:

• Editing member prepaid sesions

Should be admin-level protected.

Acceptance Criteria:

• Endpoint for changing prepaid sessions
  • Endpoint is at POST api/users/[userId]/prepaid-sessions
  • Is a admin-only endpoint (adminRouteWrapper)
  • Takes in the following payload:

    {
      prepaidSession: number,
      sendEmail: boolean
    }
    

  • Validates that the user exists
  • Validates that the user is a member
  • Sends an email notifying the member that their prepaid session count has been updated if sendEmail is true.

Definition of Done:

• AC met
• Applicable tests written
• Applicable documentation is written in GH wiki
• PR reviewed
• Merged into main/feature branch

Notes / Links