Add standalone desktop workflow

internal/config/config.go

@@ -26,15 +26,17 @@ const (
 type SourceFolder struct {
 	Path    string `json:"path"`
 	Enabled bool   `json:"enabled"`
+	Root    bool   `json:"root,omitempty"`
 }
 
 type Config struct {
-	ReserveFreeGB  float64        `json:"reserve_free_gb"`
-	DestFolder     string         `json:"dest_folder"`
-	Sources        []SourceFolder `json:"sources"`
-	OverwriteMode  OverwriteMode  `json:"overwrite_mode"`
-	FileSelectMode FileSelectMode `json:"file_select_mode"`
-	AutoCopy       bool           `json:"auto_copy"`
+	MediaPath         string              `json:"media_path"`
+	ReserveFreeGB     float64             `json:"reserve_free_gb"`
+	DestFolder        string              `json:"dest_folder"`
+	Sources           []SourceFolder      `json:"sources"`
+	OverwriteMode     OverwriteMode       `json:"overwrite_mode"`
+	FileSelectMode    FileSelectMode      `json:"file_select_mode"`
+	AutoCopy          bool                `json:"auto_copy"`
 	FileReplicaCounts map[string]int      `json:"file_replica_counts,omitempty"`
 	DiskReplicaFiles  map[string][]string `json:"disk_replica_files,omitempty"`
 }
@@ -67,6 +69,8 @@ func Load(path string) (*Config, error) {
 	} else {
 		cfg.DestFolder = defaults().DestFolder
 	}
+	cfg.MediaPath = NormalizeMediaPath(cfg.MediaPath)
+	cfg.Sources = NormalizeSources(cfg.Sources, cfg.MediaPath)
 	return &cfg, nil
 }
 
@@ -86,6 +90,26 @@ func Save(path string, cfg *Config) error {
 }
 
 func (c *Config) Validate() error {
+	c.MediaPath = NormalizeMediaPath(c.MediaPath)
+	if c.MediaPath != "" {
+		info, err := os.Stat(c.MediaPath)
+		if err != nil {
+			return errors.New("media_path is not accessible")
+		}
+		if !info.IsDir() {
+			return errors.New("media_path must be a directory")
+		}
+	}
+	c.Sources = NormalizeSources(c.Sources, c.MediaPath)
+	for _, source := range c.Sources {
+		info, err := os.Stat(source.Path)
+		if err != nil {
+			return errors.New("source path is not accessible: " + source.Path)
+		}
+		if !info.IsDir() {
+			return errors.New("source path must be a directory: " + source.Path)
+		}
+	}
 	if c.ReserveFreeGB < 0 {
 		return errors.New("reserve_free_gb must be >= 0")
 	}
@@ -105,6 +129,46 @@ func (c *Config) Validate() error {
 	return nil
 }
 
+func NormalizeMediaPath(value string) string {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return ""
+	}
+	return filepath.Clean(value)
+}
+
+func NormalizeSources(items []SourceFolder, mediaPath string) []SourceFolder {
+	seen := make(map[string]struct{}, len(items))
+	result := make([]SourceFolder, 0, len(items))
+	for _, item := range items {
+		path := normalizeSourcePath(item.Path, mediaPath)
+		if path == "" {
+			continue
+		}
+		if _, ok := seen[path]; ok {
+			continue
+		}
+		seen[path] = struct{}{}
+		result = append(result, SourceFolder{
+			Path:    path,
+			Enabled: item.Enabled,
+			Root:    item.Root,
+		})
+	}
+	return result
+}
+
+func normalizeSourcePath(value string, mediaPath string) string {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return ""
+	}
+	if !filepath.IsAbs(value) && mediaPath != "" {
+		value = filepath.Join(mediaPath, value)
+	}
+	return filepath.Clean(value)
+}
+
 func NormalizeDestFolder(value string) (string, error) {
 	value = strings.TrimSpace(value)
 	if value == "" {