chore: go fixes

api/playback/allanime_client.go

@@ -304,13 +304,6 @@ func getMapKeys(m map[string]any) []string {
 	return keys
 }
 
-func min(a, b int) int {
-	if a < b {
-		return a
-	}
-	return b
-}
-
 func (c *allAnimeClient) extractSourceURLsFromData(ctx context.Context, data map[string]any) []StreamSource {
 	episodeData, ok := data["episode"].(map[string]any)
 	if !ok {

api/playback/handler.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"log"
+	"maps"
 	"net/http"
 	"sort"
 	"strconv"
@@ -214,9 +215,7 @@ func (h *Handler) HandleProxy(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	for k, v := range headers {
-		w.Header()[k] = v
-	}
+	maps.Copy(w.Header(), headers)
 	w.WriteHeader(statusCode)
 
 	if bodyReader != nil {

api/playback/provider_extractor.go

@@ -31,7 +31,7 @@ func (e *providerExtractor) ExtractVideoLinks(ctx context.Context, providerPath
 	var resp *http.Response
 	var err error
 
-	for attempt := 0; attempt < 3; attempt++ {
+	for attempt := range 3 {
 		if attempt > 0 {
 			select {
 			case <-ctx.Done():

api/playback/service_resolution.go

@@ -48,12 +48,10 @@ func (s *Service) searchShowResultsByMode(ctx context.Context, query string, mod
 	var wg sync.WaitGroup
 	for _, mode := range modeCandidates {
 		modeValue := mode
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			results, err := s.allAnimeClient.Search(ctx, query, modeValue)
 			searchCh <- searchModeResult{Mode: modeValue, Results: results, Err: err}
-		}()
+		})
 	}
 
 	wg.Wait()