refactor: [shitty claude AI first try] restructure server and user services, add new test cases, and improve error handling

internal/server/server_test.go

@@ -0,0 +1,48 @@
+package server
+
+import (
+	"net/http/httptest"
+	"testing"
+
+	"git.logidex.ru/fakz9/logidex-id/internal/config"
+	"github.com/gofiber/fiber/v2"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewFiberApp(t *testing.T) {
+	cfg := config.Config{}
+	cfg.App.Port = 8080
+
+	app := NewFiberApp(cfg)
+
+	assert.NotNil(t, app)
+
+	// Test health check endpoint
+	req := httptest.NewRequest("GET", "/health", nil)
+	resp, err := app.Test(req)
+
+	assert.NoError(t, err)
+	assert.Equal(t, 200, resp.StatusCode)
+}
+
+func TestNewAPIRouter(t *testing.T) {
+	cfg := config.Config{}
+	cfg.App.Port = 8080
+
+	app := NewFiberApp(cfg)
+	router := NewAPIRouter(app)
+
+	assert.NotNil(t, router)
+
+	// Test that we can add routes to the router
+	router.Get("/test", func(c *fiber.Ctx) error {
+		return c.JSON(map[string]string{"message": "test"})
+	})
+
+	// Test the route works
+	req := httptest.NewRequest("GET", "/api/test", nil)
+	resp, err := app.Test(req)
+
+	assert.NoError(t, err)
+	assert.Equal(t, 200, resp.StatusCode)
+}