initial commit: applephotos CLI with progress, cloud status, per-asset export

internal/photos/bridge.go

@@ -0,0 +1,84 @@
+package photos
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type Bridge interface {
+	RequestAccess() error
+	ListAlbums() ([]Album, error)
+	ListAssets(albumID string) ([]Asset, int, error)
+	ListTree() ([]CollectionNode, error)
+	ExportAlbumPreviews(albumID, outputDir string, targetSize int) (int, error)
+	ExportAlbumOriginals(albumID, outputDir string) (int, error)
+	ExportPreview(assetID, outputDir string, targetSize, index int) (ExportResult, error)
+	ExportOriginal(assetID, outputDir string, index int) (ExportResult, error)
+	BackupAll(outputDir string, targetSize int, originals bool) (int, error)
+	Cancel()
+}
+
+func ParseAlbumsJSON(jsonStr string) ([]Album, error) {
+	var resp AlbumsResponse
+	if err := json.Unmarshal([]byte(jsonStr), &resp); err != nil {
+		return nil, err
+	}
+	return resp.Albums, nil
+}
+
+func ParseAssetsJSON(jsonStr string) ([]Asset, int, error) {
+	var errResp ErrorResponse
+	if err := json.Unmarshal([]byte(jsonStr), &errResp); err == nil && errResp.Error != "" {
+		return nil, 0, fmt.Errorf("%s", errResp.Error)
+	}
+
+	var resp AssetsResponse
+	if err := json.Unmarshal([]byte(jsonStr), &resp); err != nil {
+		return nil, 0, err
+	}
+	return resp.Assets, resp.Total, nil
+}
+
+func ParseTreeJSON(jsonStr string) ([]CollectionNode, error) {
+	var errResp ErrorResponse
+	if err := json.Unmarshal([]byte(jsonStr), &errResp); err == nil && errResp.Error != "" {
+		return nil, fmt.Errorf("%s", errResp.Error)
+	}
+
+	var resp TreeResponse
+	if err := json.Unmarshal([]byte(jsonStr), &resp); err != nil {
+		return nil, err
+	}
+	return resp.Collections, nil
+}
+
+func ParseExportResultJSON(jsonStr string) (ExportResult, error) {
+	var resp ExportResultResponse
+	if err := json.Unmarshal([]byte(jsonStr), &resp); err != nil {
+		return ExportResult{}, err
+	}
+	if resp.Error != "" {
+		return ExportResult{}, fmt.Errorf("%s", resp.Error)
+	}
+	return resp.ExportResult, nil
+}
+
+func InterpretExportResult(rc int) (int, error) {
+	switch rc {
+	case -1:
+		return 0, fmt.Errorf("invalid arguments or directory creation failed")
+	case -2:
+		return 0, fmt.Errorf("could not create output directory")
+	case -3:
+		return 0, fmt.Errorf("album not found")
+	case -4:
+		return 0, fmt.Errorf("all exports failed")
+	case -5:
+		return 0, fmt.Errorf("cancelled")
+	default:
+		if rc < 0 {
+			return 0, fmt.Errorf("unknown error (code %d)", rc)
+		}
+		return rc, nil
+	}
+}