feat: add episode service with background refresh worker

internal/episodes/module.go

@@ -0,0 +1,35 @@
+package episodes
+
+import (
+	"os"
+	"strings"
+
+	"mal/integrations/jikan"
+	"mal/integrations/playback/allanime"
+	"mal/internal/db"
+	"mal/internal/domain"
+	episodeService "mal/internal/episodes/service"
+
+	"go.uber.org/fx"
+)
+
+func episodeAvailabilityEnabled() bool {
+	value := strings.ToLower(strings.TrimSpace(os.Getenv("EPISODE_AVAILABILITY_MODE")))
+	return value != "legacy" && value != "jikan"
+}
+
+var Module = fx.Options(
+	fx.Provide(
+		episodeAvailabilityEnabled,
+		fx.Annotate(
+			func(queries *db.Queries, jikanClient *jikan.Client, providers []domain.EpisodeAvailabilityProvider, enabled bool) domain.EpisodeService {
+				return episodeService.NewEpisodeService(queries, jikanClient, providers, enabled)
+			},
+			fx.ParamTags(``, ``, ``, ``),
+		),
+	),
+	fx.Provide(func(p *allanime.AllAnimeProvider) []domain.EpisodeAvailabilityProvider {
+		return []domain.EpisodeAvailabilityProvider{p}
+	}),
+	fx.Invoke(RegisterWorker),
+)