添加跳过片头片尾功能

internal/handler/playback_segments.go

@@ -0,0 +1,55 @@
+// Package handler — 片头/片尾片段接口。
+//
+//	GET /playback/:id/segments
+//
+// 单独开一个接口而不是塞进 /media/:id/playback，有两个原因：一是抓取外部数据
+// 可能要几秒，不能拖慢决定能否起播的那个请求；二是片段与播放来源（本地 / 云盘 /
+// 远程 Emby）无关，独立出来对所有媒体一致。
+package handler
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+
+	"github.com/truewhile/MeBox/internal/service"
+)
+
+// playbackSegmentsHandler returns the skippable ranges for one media item.
+// The client calls it after playback has already started, so the provider
+// lookup never delays a play.
+func playbackSegmentsHandler(svc *service.Container) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		autoSkip := resolveAutoSkipFlag(c, svc)
+		segments := []service.SegmentView{}
+
+		m, err := findMediaForPlaybackEndpoint(c, svc, c.Param("id"))
+		if err != nil || m == nil || !mediaVisibleForRequest(c, svc, m) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "media not found"})
+			return
+		}
+		// 远程 Emby 挂载的条目是上游库的投影，本地没有可查询的外部 ID 关联。
+		if svc.Segments != nil && !service.IsEmbyRemoteID(m.ID) {
+			rows, listErr := svc.Segments.ListForPlayback(c.Request.Context(), m)
+			if listErr != nil && svc.Log != nil {
+				svc.Log.Debug("list media segments failed",
+					zap.String("media_id", m.ID), zap.Error(listErr))
+			}
+			segments = service.ToSegmentViews(rows)
+		}
+		c.JSON(http.StatusOK, gin.H{"segments": segments, "auto_skip": autoSkip})
+	}
+}
+
+// resolveAutoSkipFlag reads the「自动跳过片头」switch off whichever profile is
+// currently in effect. It reuses selectedPlayProfile so the server agrees with
+// the UI about which profile is active (explicit header first, then the user's
+// default profile), and a PIN-locked profile never silently skips for the user.
+func resolveAutoSkipFlag(c *gin.Context, svc *service.Container) bool {
+	profile, locked := selectedPlayProfile(c, svc)
+	if locked || profile == nil {
+		return false
+	}
+	return profile.SkipIntro
+}