Add album/track releases with audio analysis, AnalyzeAlbumRelease RPC, Docker path auto-resolution, release parsing decision tree

internal/torrent/path_mapper.go

@@ -0,0 +1,88 @@
+package torrent
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+
+	dockerclient "github.com/docker/docker/client"
+	"github.com/rs/zerolog/log"
+)
+
+type PathMapper struct {
+	containerPath string
+	hostPath      string
+}
+
+func NewPathMapper(containerName string, torrentClient TorrentClient) (*PathMapper, error) {
+	if containerName == "" {
+		savePath, err := torrentClient.DefaultSavePath()
+		if err != nil {
+			return nil, fmt.Errorf("getting default save path: %w", err)
+		}
+		log.Info().Str("path", savePath).Msg("no container configured, using direct path")
+		return &PathMapper{containerPath: savePath, hostPath: savePath}, nil
+	}
+
+	savePath, err := torrentClient.DefaultSavePath()
+	if err != nil {
+		return nil, fmt.Errorf("getting default save path: %w", err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	cli, err := dockerclient.NewClientWithOpts(dockerclient.FromEnv, dockerclient.WithAPIVersionNegotiation())
+	if err != nil {
+		return nil, fmt.Errorf("creating docker client: %w", err)
+	}
+	defer cli.Close()
+
+	inspect, err := cli.ContainerInspect(ctx, containerName)
+	if err != nil {
+		return nil, fmt.Errorf("inspecting container %s: %w", containerName, err)
+	}
+
+	hostPath := ""
+	for _, mount := range inspect.Mounts {
+		if mount.Destination == savePath {
+			hostPath = mount.Source
+			break
+		}
+	}
+
+	if hostPath == "" {
+		return nil, fmt.Errorf("no mount found for %s in container %s", savePath, containerName)
+	}
+
+	log.Info().
+		Str("container", containerName).
+		Str("container_path", savePath).
+		Str("host_path", hostPath).
+		Msg("resolved download path mapping")
+
+	return &PathMapper{containerPath: savePath, hostPath: hostPath}, nil
+}
+
+func (m *PathMapper) ToHost(containerPath string) string {
+	if m.containerPath == m.hostPath {
+		return containerPath
+	}
+	return strings.Replace(containerPath, m.containerPath, m.hostPath, 1)
+}
+
+func (m *PathMapper) ToContainer(hostPath string) string {
+	if m.containerPath == m.hostPath {
+		return hostPath
+	}
+	return strings.Replace(hostPath, m.hostPath, m.containerPath, 1)
+}
+
+func (m *PathMapper) HostDownloadPath() string {
+	return m.hostPath
+}
+
+func (m *PathMapper) ContainerDownloadPath() string {
+	return m.containerPath
+}