feat: added bulk approval endpoint for B&R

[jajjibhai008]

Description:
Added BNR bulk approval endpoint

http://localhost:18270/api/v1/learner-credit-requests/bulk-approve/

• Payload for selected requests approval

{ 
    "policy_uuid": "a12d4d9b-3d3b-4e5a-902d-a36d18a3fc82",
    "enterprise_customer_uuid": "7af27a1d-8012-4985-b89f-9c8bdd46b3a2",
    "subsidy_request_uuids": [ "0b887544-103a-4916-9929-9c256ea012d5", "131e4d6a-3674-4941-a9b6-d0f8a14d912d"]
}

• Payload for All requests approval

{ 
    "policy_uuid": "a12d4d9b-3d3b-4e5a-902d-a36d18a3fc82",
    "enterprise_customer_uuid": "7af27a1d-8012-4985-b89f-9c8bdd46b3a2",
    "approve_all": true
}

Expected Response

{
    "approved": [
        {
            "uuid": "0b887544-103a-4916-9929-9c256ea012d4",
            "state": "approved",
            "detail": "Successfully approved"
        },
        {
            "uuid": "131e4d6a-3674-4941-a9b6-d0f8a14d912d",
            "state": "approved",
            "detail": "Successfully approved"
        }
    ],
    "failed": [],
    "not_found": [],
    "skipped": []
}

Jira:
ENT-XXXX

Merge checklist:

• ./manage.py makemigrations has been run
  • Note: This must be run if you modified any models.
    • It may or may not make a migration depending on exactly what you modified, but it should still be run.

Post merge:

• Ensure that your changes went out to the stage instance
• Deploy to prod instance

[sameenfatima78]

@jajjibhai008 [Question] Is there a limit to how many bulk requests can admins approve at a time? Also, wouldn't it be better to create a separate utility to create/update assignments in bulk using Django's bulk_update() as it will be more efficient in handling updates in batches?

[sameenfatima78]

Left a couple of comments/minor suggestion.
Also, curious how the code will handle re-requests for the same course?

[sameenfatima78]

we need a unit test for approve_all as well.

[sameenfatima78]

[suggestion] let's take this statement outside of loop

now = localized_utcnow()
for request in approved_requests:
    request.state = SubsidyRequestStates.APPROVED
    request.reviewer = reviewer
    request.reviewed_at = now

[sameenfatima78]

This field can be left empty for approvals. In fact, it’s better to rename it to “error,” so the frontend can safely assume it only appears for failed requests.

[sameenfatima78]

does this indicate that we are either going to process all requests or none in case of failures?