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backend/internal/managementasset/assets.go

@@ -0,0 +1,53 @@
+package managementasset
+
+import (
+	"io/fs"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+const (
+	IndexFile      = "index.html"
+	ManagementFile = "management.html"
+)
+
+// Source describes the filesystem and entry file used for the management UI.
+type Source struct {
+	FileSystem http.FileSystem
+	Entry      string
+}
+
+// Current returns the configured management UI source.
+func Current() (*Source, error) {
+	if override := strings.TrimSpace(os.Getenv("MANAGEMENT_STATIC_PATH")); override != "" {
+		cleaned := filepath.Clean(override)
+		info, err := os.Stat(cleaned)
+		if err != nil {
+			return nil, err
+		}
+
+		if !info.IsDir() {
+			return &Source{
+				FileSystem: http.Dir(filepath.Dir(cleaned)),
+				Entry:      filepath.Base(cleaned),
+			}, nil
+		}
+
+		entry := IndexFile
+		if _, err = os.Stat(filepath.Join(cleaned, entry)); err != nil {
+			if !os.IsNotExist(err) {
+				return nil, err
+			}
+			entry = ManagementFile
+		}
+		return &Source{FileSystem: http.Dir(cleaned), Entry: entry}, nil
+	}
+
+	files := embeddedFiles()
+	if files == nil {
+		return nil, fs.ErrNotExist
+	}
+	return &Source{FileSystem: http.FS(files), Entry: IndexFile}, nil
+}

backend/internal/managementasset/assets_frontend.go

@@ -0,0 +1,19 @@
+//go:build frontend
+
+package managementasset
+
+import (
+	"embed"
+	"io/fs"
+)
+
+//go:embed dist
+var frontendFiles embed.FS
+
+func embeddedFiles() fs.FS {
+	files, err := fs.Sub(frontendFiles, "dist")
+	if err != nil {
+		return nil
+	}
+	return files
+}

backend/internal/managementasset/assets_stub.go

@@ -0,0 +1,9 @@
+//go:build !frontend
+
+package managementasset
+
+import "io/fs"
+
+func embeddedFiles() fs.FS {
+	return nil
+}