Add indexer cache with River queue for scheduled refresh

internal/service.go

@@ -0,0 +1,91 @@
+package internal
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/riverqueue/river"
+	"github.com/rs/zerolog/log"
+	"google.golang.org/grpc"
+
+	metadataPb "homelab.lan/music-agregator/gen/metadata/v1"
+	pb "homelab.lan/music-agregator/gen/music_agregator/v1"
+
+	"homelab.lan/music-agregator/internal/config"
+	"homelab.lan/music-agregator/internal/indexer"
+	"homelab.lan/music-agregator/internal/metadata"
+)
+
+type MusicAgregatorService struct {
+	config         config.Config
+	metadataClient metadataPb.MetadataServiceClient
+	metadataConn   *grpc.ClientConn
+	indexer        *indexer.IndexerService
+}
+
+func NewMusicAgregatorService(cfg config.Config, riverClient *river.Client[pgx.Tx]) (*MusicAgregatorService, error) {
+	indexer, err := indexer.NewIndexerService(cfg, riverClient)
+	if err != nil {
+		log.Err(err).Msg("failed to create IndexerService")
+		return nil, err
+	}
+
+	metadataClient, conn, err := metadata.NewMetadataClient(cfg.Metadata.Endpoint)
+	if err != nil {
+		log.Err(err).Msg("failed to create metadata client")
+		return nil, err
+	}
+
+	return &MusicAgregatorService{
+		config:         cfg,
+		metadataClient: metadataClient,
+		metadataConn:   conn,
+		indexer:        indexer,
+	}, nil
+}
+
+func (s *MusicAgregatorService) Close() {
+	if s.metadataConn != nil {
+		s.metadataConn.Close()
+	}
+}
+
+func (service *MusicAgregatorService) MonitorAlbum(ctx context.Context, req *pb.MonitorAlbumRequest) (*pb.MonitorAlbumResponse, error) {
+	resp, err := service.metadataClient.GetAlbum(ctx, &metadataPb.GetAlbumRequest{
+		Identifier: &metadataPb.GetAlbumRequest_Id{Id: req.GetAlbumId()},
+	})
+	if err != nil {
+		log.Error().Err(err).Str("album_id", req.GetAlbumId()).Msg("metadata GetAlbum failed")
+		return nil, err
+	}
+	album := resp.GetAlbum()
+	artistName := ""
+	if len(album.GetArtists()) > 0 {
+		artistName = album.GetArtists()[0].GetArtist().GetName()
+	}
+
+	log.Debug().
+		Str("album_id", req.GetAlbumId()).
+		Str("title", album.GetTitle()).
+		Str("artist", artistName).
+		Msg("album found, monitoring")
+
+	query := album.GetTitle()
+	if artistName != "" {
+		query = artistName + " " + query
+	}
+
+	tracker := req.GetIndexerOptions().GetTracker()
+	if tracker == "" {
+		tracker = "all"
+	}
+
+	searchResult, err := service.indexer.Search(query, -1, tracker)
+	if err != nil {
+		log.Error().Err(err).Str("query", query).Msg("indexer search album failed")
+		return nil, err
+	}
+	log.Debug().Int("results", len(searchResult.GetResult())).Str("query", query).Msg("indexer search completed")
+
+	return &pb.MonitorAlbumResponse{}, nil
+}