fix: harden playback and migrations

internal/features/playback/service_http.go

@@ -0,0 +1,77 @@
+package playback
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+func (s *Service) fetchSkipSegments(ctx context.Context, malID int, episode string) []SkipSegment {
+	if malID <= 0 || strings.TrimSpace(episode) == "" {
+		return nil
+	}
+
+	endpoint := fmt.Sprintf("https://api.aniskip.com/v1/skip-times/%s/%s?types=op&types=ed", url.PathEscape(strconv.Itoa(malID)), url.PathEscape(episode))
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint, nil)
+	if err != nil {
+		return nil
+	}
+	req.Header.Set("User-Agent", defaultUserAgent)
+
+	resp, err := s.httpClient.Do(req)
+	if err != nil {
+		return nil
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return nil
+	}
+
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 512*1024))
+	if err != nil {
+		return nil
+	}
+
+	type resultItem struct {
+		SkipType string `json:"skip_type"`
+		Interval struct {
+			StartTime float64 `json:"start_time"`
+			EndTime   float64 `json:"end_time"`
+		} `json:"interval"`
+	}
+	type apiResponse struct {
+		Found  bool         `json:"found"`
+		Result []resultItem `json:"results"`
+	}
+
+	var parsed apiResponse
+	if err := json.Unmarshal(body, &parsed); err != nil {
+		return nil
+	}
+
+	segments := make([]SkipSegment, 0, len(parsed.Result))
+	for _, item := range parsed.Result {
+		if item.Interval.EndTime <= item.Interval.StartTime {
+			continue
+		}
+
+		t := strings.ToLower(item.SkipType)
+		if t != "op" && t != "ed" {
+			continue
+		}
+
+		segments = append(segments, SkipSegment{
+			Type:  t,
+			Start: item.Interval.StartTime,
+			End:   item.Interval.EndTime,
+		})
+	}
+
+	return segments
+}