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()

integrations/jikan/client.go

@@ -316,10 +316,7 @@ func (c *Client) fetchWithRetry(ctx context.Context, urlStr string, out any) err
 
 			if retryable && attempt < maxRetries-1 {
 				resp.Body.Close()
-				delay := retryDelay(attempt)
-				if retryAfter > delay {
-					delay = retryAfter
-				}
+				delay := max(retryAfter, retryDelay(attempt))
 
 				if retryErr := waitForRetry(ctx, delay); retryErr != nil {
 					return retryErr

integrations/jikan/types.go

@@ -100,16 +100,16 @@ func (a Anime) ShortDuration() string {
 		return ""
 	}
 	// Duration format: "23 min per ep" or "1 hr 30 min"
-	var num string
+	var num strings.Builder
 	for _, c := range a.Duration {
 		if c >= '0' && c <= '9' {
-			num += string(c)
-		} else if c == ' ' && num != "" {
+			num.WriteString(string(c))
+		} else if c == ' ' && num.String() != "" {
 			break
 		}
 	}
-	if num != "" {
-		return num + "m"
+	if num.String() != "" {
+		return num.String() + "m"
 	}
 	return a.Duration
 }

internal/worker/relations.go

@@ -65,10 +65,7 @@ func retryBackoff(attempts int64) string {
 
 	delay := time.Minute
 	if attempts > 1 {
-		shift := attempts - 1
-		if shift > 6 {
-			shift = 6
-		}
+		shift := min(attempts-1, 6)
 		delay = time.Minute * time.Duration(1<<shift)
 	}
 
@@ -76,10 +73,7 @@ func retryBackoff(attempts int64) string {
 		delay = 30 * time.Minute
 	}
 
-	minutes := int(delay / time.Minute)
-	if minutes < 1 {
-		minutes = 1
-	}
+	minutes := max(int(delay/time.Minute), 1)
 	return fmt.Sprintf("+%d minutes", minutes)
 }
 

templates/renderer.go

@@ -7,6 +7,8 @@ import (
 	"io"
 	"log"
 	"path/filepath"
+	"slices"
+	"strings"
 	"sync"
 )
 
@@ -45,19 +47,14 @@ func GetRenderer() *Renderer {
 				if len(genres) == 0 {
 					return ""
 				}
-				s := ""
+				var s strings.Builder
 				for _, g := range genres {
-					s += "genres=" + fmt.Sprintf("%d", g) + "&"
+					s.WriteString("genres=" + fmt.Sprintf("%d", g) + "&")
 				}
-				return s[:len(s)-1]
+				return s.String()[:len(s.String())-1]
 			},
 			"hasGenre": func(id int, genres []int) bool {
-				for _, g := range genres {
-					if g == id {
-						return true
-					}
-				}
-				return false
+				return slices.Contains(genres, id)
 			},
 			"add": func(a, b int) int {
 				return a + b