feat: customize api root response and update dev ingress host

- Update root handler to return server public IP via ipify
- Update root handler response JSON structure
- Update ingress host to api-dev.gohorsejobs.com
- Add unit tests for router

backend/go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/google/uuid v1.6.0
 	github.com/joho/godotenv v1.5.1
 	github.com/lib/pq v1.10.9
+	github.com/stretchr/testify v1.7.0
 	github.com/swaggo/http-swagger/v2 v2.0.2
 	github.com/swaggo/swag v1.16.6
 	golang.org/x/crypto v0.45.0
@@ -33,6 +34,7 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.12 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.41.5 // indirect
 	github.com/aws/smithy-go v1.24.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-openapi/jsonpointer v0.22.3 // indirect
 	github.com/go-openapi/jsonreference v0.21.3 // indirect
 	github.com/go-openapi/spec v0.22.1 // indirect
@@ -43,9 +45,11 @@ require (
 	github.com/go-openapi/swag/stringutils v0.25.4 // indirect
 	github.com/go-openapi/swag/typeutils v0.25.4 // indirect
 	github.com/go-openapi/swag/yamlutils v0.25.4 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/swaggo/files/v2 v2.0.2 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/mod v0.30.0 // indirect
 	golang.org/x/sync v0.18.0 // indirect
 	golang.org/x/tools v0.39.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0 // indirect
 )

backend/go.sum

@@ -38,6 +38,7 @@ github.com/aws/aws-sdk-go-v2/service/sts v1.41.5 h1:SciGFVNZ4mHdm7gpD1dgZYnCuVdX
 github.com/aws/aws-sdk-go-v2/service/sts v1.41.5/go.mod h1:iW40X4QBmUxdP+fZNOpfmkdMZqsovezbAeO+Ubiv2pk=
 github.com/aws/smithy-go v1.24.0 h1:LpilSUItNPFr1eY85RYgTIg5eIEPtvFbskaFcmmIUnk=
 github.com/aws/smithy-go v1.24.0/go.mod h1:LEj2LM3rBRQJxPZTB4KuzZkaZYnZPnvgIhb4pu07mx0=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-openapi/jsonpointer v0.22.3 h1:dKMwfV4fmt6Ah90zloTbUKWMD+0he+12XYAsPotrkn8=
@@ -79,6 +80,7 @@ github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/swaggo/files/v2 v2.0.2 h1:Bq4tgS/yxLB/3nwOMcul5oLEUKa877Ykgz3CJMVbQKU=
@@ -99,5 +101,6 @@ golang.org/x/tools v0.39.0 h1:ik4ho21kwuQln40uelmciQPp9SipgNDdrafrYA4TmQQ=
 golang.org/x/tools v0.39.0/go.mod h1:JnefbkDPyD8UU2kI5fuf8ZX4/yUeh9W877ZeBONxUqQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0 h1:hjy8E9ON/egN1tAYqKb61G10WtihqetD4sz2H+8nIeA=
 gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

backend/internal/router/router.go

@@ -70,26 +70,47 @@ func NewRouter() http.Handler {
 	cloudflareHandler := cloudflare.NewHandler()
 	cpanelHandler := cpanel.NewHandler()
 
+	// cachedPublicIP stores the public IP to avoid repeated external calls
+	var cachedPublicIP string
+
+	// Helper to get public IP
+	getPublicIP := func() string {
+		if cachedPublicIP != "" {
+			return cachedPublicIP
+		}
+		client := http.Client{
+			Timeout: 2 * time.Second,
+		}
+		resp, err := client.Get("https://api.ipify.org?format=text")
+		if err != nil {
+			return "127.0.0.1" // Fallback
+		}
+		defer resp.Body.Close()
+
+		// simple read
+		buf := make([]byte, 64)
+		n, err := resp.Body.Read(buf)
+		if err != nil && err.Error() != "EOF" {
+			return "127.0.0.1"
+		}
+		cachedPublicIP = string(buf[:n])
+		return cachedPublicIP
+	}
+
 	// --- ROOT ROUTE ---
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path != "/" {
 			http.NotFound(w, r)
 			return
 		}
-		// Get client IP
+
-		clientIP := r.Header.Get("X-Forwarded-For")
+		serverIP := getPublicIP()
-		if clientIP == "" {
-			clientIP = r.Header.Get("X-Real-IP")
-		}
-		if clientIP == "" {
-			clientIP = r.RemoteAddr
-		}
 
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 		response := `{
 	"message": "🐴 GoHorseJobs API is running!",
-	"ip": "` + clientIP + `",
+	"ip": "` + serverIP + `",
 	"docs": "/docs",
 	"health": "/health",
 	"version": "1.0.0"

backend/internal/router/router_test.go

@@ -0,0 +1,43 @@
+package router_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/rede5/gohorsejobs/backend/internal/router"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRootHandler(t *testing.T) {
+	// Initialize the router
+	// Note: NewRouter might try to connect to the DB.
+	// For this unit test, if NewRouter is tightly coupled to DB, we might face issues.
+	// However, seeing as we just need to test the / route which doesn't use the DB,
+	// let's try to run it. If it fails due to DB connection,
+	// we'll have to mock the dependencies or skip full router initialization for just this handler.
+	//
+	// Given the context of the previous file view, NewRouter initializes services that use database.DB.
+	// If database.DB is nil (which it is here), it might pass fine until a handler ACTUALLY tries to use it.
+	// The root handler does NOT use the DB, so this might work.
+
+	r := router.NewRouter()
+
+	req, _ := http.NewRequest("GET", "/", nil)
+	w := httptest.NewRecorder()
+
+	r.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+
+	var response map[string]interface{}
+	err := json.Unmarshal(w.Body.Bytes(), &response)
+	assert.NoError(t, err)
+
+	assert.Equal(t, "🐴 GoHorseJobs API is running!", response["message"])
+	assert.NotEmpty(t, response["ip"])
+	assert.Equal(t, "/docs", response["docs"])
+	assert.Equal(t, "/health", response["health"])
+	assert.Equal(t, "1.0.0", response["version"])
+}

k8s/dev/backend-ingress-dev.yaml

@@ -11,7 +11,7 @@ metadata:
 spec:
   ingressClassName: traefik
   rules:
-    - host: gohorse-backend-dev.gohorsejobs.com
+    - host: api-dev.gohorsejobs.com
       http:
         paths:
           - path: /
@@ -23,5 +23,5 @@ spec:
                   number: 3000
   tls:
     - hosts:
-        - gohorse-backend-dev.gohorsejobs.com
+        - api-dev.gohorsejobs.com
       secretName: gohorse-backend-dev-cert