chore(docs): remove webhooks docs and add pub/sub docs (#23)

.env.sample

@@ -1,4 +1,5 @@
 DATABASE_URL=postgres://postgres:postgres@localhost:5432/postgres
 GIT_SERVICE_URL=http://localhost:8080
 RABBITMQ_URL=amqp://guest:guest@localhost:5672
-RABBITMQ_QUEUE_NAME=backend_core_queue
+RABBITMQ_QUEUE_NAME=backend_core_queue
+CONNECTION_URL=127.0.0.1:4925

README.md

@@ -90,48 +90,9 @@ Connected (press CTRL+C to quit)
 
 You can now send and receive messages to and from the server. You can also use Postman to test the websocket server.
 
-### Webhooks
+## Pub / Sub
 
-The server also has a webhook server running on [http://localhost:4925/webhook](http://localhost:4925/webhook). This webhook server is used to receive webhook events from the [git-service](https://github.com/extheoisah/hxckr-infra/tree/main/git-service) which is responsible for managing the git repositories and the [test runners](https://github.com/Extheoisah/hxckr-test-runners).
-
-The webhook server currently supports two event types:
-
-- `push`: This event is triggered when a push is made to a repository.
-- `test_result`: This event is triggered when a test runner has finished running the tests for an exercise submission.
-
-The webhook server expects the following payload:
-
-- `event_type`: The type of event.
-- `payload`: The payload of the event.
-
-For `push` event:
-
-```json
-{
-  "event_type": "push",
-  "payload": {
-    "repoUrl": "https://github.com/extheoisah/hxckr-core.git",
-    "commitHash": "abc123",
-    "branchUrl": "https://github.com/extheoisah/hxckr-core/tree/feature/add-test-runner"
-  }
-}
-```
-
-For `test_result` event:
-
-```json
-{
-  "event_type": "test_result",
-  "payload": {
-    "exerciseId": "1",
-    "testName": "test_name",
-    "outcome": "pass" | "fail",
-    "error": "error message",
-    "message": "test output",
-    "duration": "10s"
-  }
-}
-```
+The server has a pub/sub system that is used to receive real time events from the git service and test runners, and send real-time messages to the clients. The pub/sub system is built using the [Rabbimq](https://www.rabbitmq.com/) message broker. The pub/sub system is used to send real-time messages to the clients such as the challenge results, the leaderboard, etc. Only the git service and test runners will publish messages to the queue, while the clients and the server will subscribe to the queue to receive messages.
 
 ## Contributing