Add health check endpoint and tests (#30)

* Add health check endpoint and tests

* remove comment

* add timeStamp in response

controllers/healthCheckHandler.go

@@ -0,0 +1,28 @@
+package controllers
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+type HealthCheckResponse struct {
+	Status    string `json:"status"`
+	Timestamp string `json:"timestamp"`
+}
+
+func HealthCheckHandler(response http.ResponseWriter, request *http.Request, params httprouter.Params) {
+	response.Header().Set("Content-Type", "application/json")
+
+	data := HealthCheckResponse{
+		Status:    "ok",
+		Timestamp: time.Now().Format(time.RFC3339),
+	}
+
+	if err := json.NewEncoder(response).Encode(data); err != nil {
+		http.Error(response, `{"status":"error","message":"Internal Server Error"}`, http.StatusInternalServerError)
+		return
+	}
+}

controllers/healthCheckHandler_test.go

@@ -0,0 +1,38 @@
+package controllers_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/Real-Dev-Squad/discord-service/controllers"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHealthCheckHandler(t *testing.T) {
+	req, err := http.NewRequest("GET", "/health", nil)
+	assert.NoError(t, err)
+
+	rr := httptest.NewRecorder()
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		controllers.HealthCheckHandler(w, r, nil)
+	})
+
+	handler.ServeHTTP(rr, req)
+
+	assert.Equal(t, http.StatusOK, rr.Code)
+	assert.Equal(t, "application/json", rr.Header().Get("Content-Type"))
+
+	var response map[string]string
+	err = json.Unmarshal(rr.Body.Bytes(), &response)
+	assert.NoError(t, err)
+	assert.Equal(t, "ok", response["status"])
+
+	// Validate the timestamp format
+	timestamp, exists := response["timestamp"]
+	assert.True(t, exists, "timestamp field should exist")
+	_, err = time.Parse(time.RFC3339, timestamp)
+	assert.NoError(t, err, "timestamp should be in RFC3339 format")
+}

routes/baseRoute.go

@@ -8,4 +8,5 @@ import (
 
 func SetupBaseRoutes(router *httprouter.Router) {
 	router.POST("/", middleware.VerifyCommand(controllers.HomeHandler))
+	router.GET("/health", controllers.HealthCheckHandler)
 }