Music Pipeline Refactor

internal/project/project.go

@@ -121,7 +121,23 @@ type HAKConfig struct {
 }
 
 type MusicConfig struct {
-	Prefixes map[string]string `json:"prefixes" yaml:"prefixes"`
+	Prefixes map[string]string            `json:"prefixes,omitempty" yaml:"prefixes,omitempty"`
+	Defaults *MusicDefaultsConfig          `json:"defaults,omitempty" yaml:"defaults,omitempty"`
+	Datasets map[string]MusicDatasetConfig `json:"datasets,omitempty" yaml:"datasets,omitempty"`
+}
+
+type MusicDefaultsConfig struct {
+	StageRoot      string `json:"stage_root,omitempty" yaml:"stage_root,omitempty"`
+	CreditsRoot    string `json:"credits_root,omitempty" yaml:"credits_root,omitempty"`
+	CreditsOverlay string `json:"credits_overlay,omitempty" yaml:"credits_overlay,omitempty"`
+	MaxStemLength  *int   `json:"max_stem_length,omitempty" yaml:"max_stem_length,omitempty"`
+}
+
+type MusicDatasetConfig struct {
+	Source      string `json:"source" yaml:"source"`
+	Prefix      string `json:"prefix,omitempty" yaml:"prefix,omitempty"`
+	StageRoot   string `json:"stage_root,omitempty" yaml:"stage_root,omitempty"`
+	CreditsRoot string `json:"credits_root,omitempty" yaml:"credits_root,omitempty"`
 }
 
 type TopDataConfig struct {
@@ -871,6 +887,25 @@ func normalizeConfig(cfg *Config) {
 	for i := range cfg.Autogen.Consumers {
 		cfg.Autogen.Consumers[i].Include = normalizeStringSlice(cfg.Autogen.Consumers[i].Include)
 	}
+	normalizeMusicConfig(&cfg.Music)
+}
+
+func normalizeMusicConfig(music *MusicConfig) {
+	if len(music.Prefixes) > 0 && len(music.Datasets) == 0 {
+		datasets := make(map[string]MusicDatasetConfig, len(music.Prefixes))
+		for dir, prefix := range music.Prefixes {
+			source := trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(dir)))
+			if source == "" {
+				continue
+			}
+			key := strings.ReplaceAll(source, "/", "_")
+			datasets[key] = MusicDatasetConfig{
+				Source: source,
+				Prefix: strings.TrimSpace(prefix),
+			}
+		}
+		music.Datasets = datasets
+	}
 }
 
 func normalizeStringSlice(input []string) []string {
@@ -994,6 +1029,20 @@ func validateMusicConfig(cfg MusicConfig) []error {
 			failures = append(failures, fmt.Errorf("music.prefixes[%q] must not be empty", root))
 		}
 	}
+	seenSources := map[string]string{}
+	for id, ds := range cfg.Datasets {
+		if strings.TrimSpace(id) == "" {
+			failures = append(failures, errors.New("music.datasets contains an empty key"))
+		}
+		source := trimConfigSlashes(filepath.ToSlash(strings.TrimSpace(ds.Source)))
+		if source == "" {
+			failures = append(failures, fmt.Errorf("music.datasets[%q].source is required", id))
+		} else if prior, exists := seenSources[source]; exists {
+			failures = append(failures, fmt.Errorf("music.datasets[%q].source %q conflicts with dataset %q", id, ds.Source, prior))
+		} else {
+			seenSources[source] = id
+		}
+	}
 	return failures
 }