feat: add STRM output directory presets

internal/service/strm_output_presets.go

@@ -0,0 +1,79 @@
+package service
+
+import (
+	"context"
+	"path/filepath"
+	"strings"
+
+	"github.com/ShukeBta/MediaStationGo/internal/model"
+	"github.com/ShukeBta/MediaStationGo/internal/repository"
+)
+
+type STRMOutputPreset struct {
+	Label string `json:"label"`
+	Path  string `json:"path"`
+	Kind  string `json:"kind"`
+}
+
+func STRMOutputPresets(ctx context.Context, repo *repository.Container) ([]STRMOutputPreset, error) {
+	presets := defaultSTRMOutputPresets()
+	seen := make(map[string]struct{}, len(presets))
+	for _, preset := range presets {
+		seen[strmOutputPresetKey(preset.Path)] = struct{}{}
+	}
+	if repo == nil || repo.Library == nil {
+		return presets, nil
+	}
+	libraries, err := repo.Library.List(ctx)
+	if err != nil {
+		return nil, err
+	}
+	for i := range libraries {
+		lib := libraries[i]
+		if !lib.Enabled {
+			continue
+		}
+		roots, err := repo.Library.ListRoots(ctx, lib.ID)
+		if err != nil {
+			return nil, err
+		}
+		if len(roots) == 0 {
+			roots = []model.LibraryRoot{{Path: lib.Path, Enabled: lib.Enabled}}
+		}
+		for j := range roots {
+			root := roots[j]
+			if !root.Enabled || strings.TrimSpace(root.Path) == "" {
+				continue
+			}
+			if _, ok := ParseCloudLibraryMount(root.Path); ok {
+				continue
+			}
+			pathValue := filepath.Clean(resolveMappedDestinationPath(root.Path))
+			if pathValue == "" || pathValue == "." {
+				continue
+			}
+			key := strmOutputPresetKey(pathValue)
+			if _, ok := seen[key]; ok {
+				continue
+			}
+			seen[key] = struct{}{}
+			presets = append(presets, STRMOutputPreset{
+				Label: lib.Name,
+				Path:  pathValue,
+				Kind:  "library",
+			})
+		}
+	}
+	return presets, nil
+}
+
+func defaultSTRMOutputPresets() []STRMOutputPreset {
+	return []STRMOutputPreset{
+		{Label: "STRM 根目录", Path: filepath.Clean("data/strm"), Kind: "default"},
+		{Label: "目录树 STRM", Path: filepath.Clean("data/strm/tree"), Kind: "default"},
+	}
+}
+
+func strmOutputPresetKey(pathValue string) string {
+	return strings.ToLower(filepath.Clean(strings.TrimSpace(pathValue)))
+}