fix: resolve lint issues in handlers and middleware

internal/handlers/api.go

@@ -176,9 +176,8 @@ func (h *Handlers) HandleAPIGetApp() http.HandlerFunc {
 	}
 }
 
-// HandleAPICreateApp returns a handler that creates a new app.
+// apiCreateRequest is the JSON body for creating an app via the API.
-func (h *Handlers) HandleAPICreateApp() http.HandlerFunc {
+type apiCreateRequest struct {
-	type createRequest struct {
 	Name           string `json:"name"`
 	RepoURL        string `json:"repoUrl"`
 	Branch         string `json:"branch"`
@@ -186,10 +185,32 @@ func (h *Handlers) HandleAPICreateApp() http.HandlerFunc {
 	DockerNetwork  string `json:"dockerNetwork"`
 	NtfyTopic      string `json:"ntfyTopic"`
 	SlackWebhook   string `json:"slackWebhook"`
+}
+
+// validateCreateRequest validates the fields of an API create app request.
+// Returns an error message string or empty string if valid.
+func validateCreateRequest(req *apiCreateRequest) string {
+	if req.Name == "" || req.RepoURL == "" {
+		return "name and repo_url are required"
 	}
 
+	nameErr := validateAppName(req.Name)
+	if nameErr != nil {
+		return "invalid app name: " + nameErr.Error()
+	}
+
+	repoURLErr := validateRepoURL(req.RepoURL)
+	if repoURLErr != nil {
+		return "invalid repository URL: " + repoURLErr.Error()
+	}
+
+	return ""
+}
+
+// HandleAPICreateApp returns a handler that creates a new app.
+func (h *Handlers) HandleAPICreateApp() http.HandlerFunc {
 	return func(writer http.ResponseWriter, request *http.Request) {
-		var req createRequest
+		var req apiCreateRequest
 
 		decodeErr := json.NewDecoder(request.Body).Decode(&req)
 		if decodeErr != nil {
@@ -200,27 +221,9 @@ func (h *Handlers) HandleAPICreateApp() http.HandlerFunc {
 			return
 		}
 
-		if req.Name == "" || req.RepoURL == "" {
+		if errMsg := validateCreateRequest(&req); errMsg != "" {
 			h.respondJSON(writer, request,
-				map[string]string{"error": "name and repo_url are required"},
+				map[string]string{"error": errMsg},
-				http.StatusBadRequest)
-
-			return
-		}
-
-		nameErr := validateAppName(req.Name)
-		if nameErr != nil {
-			h.respondJSON(writer, request,
-				map[string]string{"error": "invalid app name: " + nameErr.Error()},
-				http.StatusBadRequest)
-
-			return
-		}
-
-		repoURLErr := validateRepoURL(req.RepoURL)
-		if repoURLErr != nil {
-			h.respondJSON(writer, request,
-				map[string]string{"error": "invalid repository URL: " + repoURLErr.Error()},
 				http.StatusBadRequest)
 
 			return

internal/handlers/export_test.go

@@ -0,0 +1,6 @@
+package handlers
+
+// ValidateRepoURLForTest exports validateRepoURL for testing.
+func ValidateRepoURLForTest(repoURL string) error {
+	return validateRepoURL(repoURL)
+}

internal/handlers/handlers_test.go

@@ -780,6 +780,7 @@ func TestHandleVolumeAddValidatesPaths(t *testing.T) {
 			// Check if volume was created by listing volumes
 			volumes, _ := createdApp.GetVolumes(context.Background())
 			found := false
+
 			for _, v := range volumes {
 				if v.HostPath == tt.hostPath && v.ContainerPath == tt.containerPath {
 					found = true

internal/handlers/repo_url_validation.go

@@ -20,6 +20,16 @@ var (
 // Only the "git" user is allowed, as that is the standard for SSH deploy keys.
 var scpLikeRepoRe = regexp.MustCompile(`^git@[a-zA-Z0-9._-]+:.+$`)
 
+// allowedRepoSchemes lists the URL schemes accepted for repository URLs.
+//
+//nolint:gochecknoglobals // package-level constant map parsed once
+var allowedRepoSchemes = map[string]bool{
+	"https": true,
+	"http":  true,
+	"ssh":   true,
+	"git":   true,
+}
+
 // validateRepoURL checks that the given repository URL is valid and uses an allowed scheme.
 func validateRepoURL(repoURL string) error {
 	if strings.TrimSpace(repoURL) == "" {
@@ -41,17 +51,17 @@ func validateRepoURL(repoURL string) error {
 		return errRepoURLScheme
 	}
 
-	// Parse as standard URL
+	return validateParsedRepoURL(repoURL)
+}
+
+// validateParsedRepoURL validates a standard URL-format repository URL.
+func validateParsedRepoURL(repoURL string) error {
 	parsed, err := url.Parse(repoURL)
 	if err != nil {
 		return errRepoURLInvalid
 	}
 
-	// Must have a recognized scheme
+	if !allowedRepoSchemes[strings.ToLower(parsed.Scheme)] {
-	switch strings.ToLower(parsed.Scheme) {
-	case "https", "http", "ssh", "git":
-		// OK
-	default:
 		return errRepoURLInvalid
 	}
 

internal/handlers/repo_url_validation_test.go

@@ -1,6 +1,10 @@
-package handlers
+package handlers_test
 
-import "testing"
+import (
+	"testing"
+
+	"git.eeqj.de/sneak/upaas/internal/handlers"
+)
 
 func TestValidateRepoURL(t *testing.T) {
 	t.Parallel()
@@ -43,13 +47,13 @@ func TestValidateRepoURL(t *testing.T) {
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
 
-			err := validateRepoURL(tc.url)
+			err := handlers.ValidateRepoURLForTest(tc.url)
 			if tc.wantErr && err == nil {
-				t.Errorf("validateRepoURL(%q) = nil, want error", tc.url)
+				t.Errorf("ValidateRepoURLForTest(%q) = nil, want error", tc.url)
 			}
 
 			if !tc.wantErr && err != nil {
-				t.Errorf("validateRepoURL(%q) = %v, want nil", tc.url, err)
+				t.Errorf("ValidateRepoURLForTest(%q) = %v, want nil", tc.url, err)
 			}
 		})
 	}