API Endpoints refactoring

[blu3eee]

Addresses #358

What I Did

• Refactored redundant endpoints into one with search queries (/profiles/:account_id?fields= & account-settings/:account_id?fields=)
• Removed re_path routes, which is returning a template index.html on every request to the endpoint that doesn't have a handler, which is causing append slash behavior to not working (more details below)
• Adjusted test cases to fit with the refactoring

Removal of re_path(r'.*', ) in mesh/urls.py

• This removal is to allow the appending slash behavior to work properly
• About appending slash behavior: with the current Django setup, Django is setting APPEND_SLASH = true as a default behavior. This allows the Django app to "append" slash on requests that don't have a trailing slash by permanently redirecting the request to the correct one. For example, we have an API endpoint at /example/helloworld/, when requesting to /example/helloworld, the Django app is expected to permanently redirect the request to /example/helloworld/, acting as an "append slash" behavior. But said re_path in mesh/urls.py is causing this redirect not to take place when a request to /example/helloworld is sent to the app, because the re_path takes priority and returns the user a template HTML file as a response instead of redirecting to /example/helloworld/.
• By removing said re_path, the "append" slash behavior is working properly, allowing users to send requests to an endpoint with or without a trailing slash.

Testing with and without trailing slash

• As mentioned above, the appending slash behavior, under the hood, is actually permanently redirecting requests to the correct one. So when we testing a request without the trailing slash, it will return a response with a status code 301

  

• In test cases:

❌ Incorrect way of sending test request (without trailing slash):

from django.test import TestCase, Client
class YourTestClass(TestCase):
    def setUp(self):
        self.client = Client()
    def your_test_case(self):
        response = self.client.get("/accounts")
        self.assertEqual(response.status_code, 200) # this will not pass ❌

This will causing failures as the response.status_code is 301 instead of 200, because the app is permanently redirect.

✅ Correct way of sending test requests (without trailing slash):

from django.test import TestCase, Client
class YourTestClass(TestCase):
    def setUp(self):
        self.client = Client()
    def your_test_case(self):
        response = self.client.get("/accounts", follow=True)
        self.assertEqual(response.status_code, 200) # this will pass ✅
        response = self.client.get("/accounts/")
        self.assertEqual(response.status_code, 200) # this will pass ✅