初始提交：短剧库源码（含转码优化 ultrafast）

internal/app/provider_huangdou_detail.go

@@ -0,0 +1,67 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"time"
+)
+
+type huangdouDetailEntry struct {
+	row       map[string]any
+	expiresAt time.Time
+}
+
+type huangdouDetailCall struct {
+	done chan struct{}
+	row  map[string]any
+	err  error
+}
+
+func (d *Downloader) huangdouDetail(ctx context.Context, id string) (map[string]any, error) {
+	if !rankingSourceID.MatchString(id) {
+		return nil, errors.New("无效的黄豆剧集 ID")
+	}
+	d.providerMu.Lock()
+	if cached, found := d.huangdouDetails[id]; found && time.Now().Before(cached.expiresAt) {
+		d.providerMu.Unlock()
+		return cached.row, nil
+	}
+	if pending := d.huangdouDetailPending[id]; pending != nil {
+		d.providerMu.Unlock()
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case <-pending.done:
+			if (errors.Is(pending.err, context.Canceled) || errors.Is(pending.err, context.DeadlineExceeded)) && ctx.Err() == nil {
+				return d.huangdouDetail(ctx, id)
+			}
+			return pending.row, pending.err
+		}
+	}
+	if d.huangdouDetailPending == nil {
+		d.huangdouDetailPending = make(map[string]*huangdouDetailCall)
+	}
+	call := &huangdouDetailCall{done: make(chan struct{})}
+	d.huangdouDetailPending[id] = call
+	d.providerMu.Unlock()
+	var decoded any
+	err := newHuangdouAPIClient(d).call(ctx, "/drama/detail", map[string]any{"id": id}, &decoded)
+	row := huangdouDataMap(decoded)
+	if err == nil && strings.TrimPrefix(mapString(row, "id", "drama_id"), "rp_") != id {
+		row = nil
+		err = errors.New("黄豆详情返回了其他剧集")
+	}
+	d.providerMu.Lock()
+	if err == nil {
+		if d.huangdouDetails == nil || len(d.huangdouDetails) >= 128 {
+			d.huangdouDetails = make(map[string]huangdouDetailEntry)
+		}
+		d.huangdouDetails[id] = huangdouDetailEntry{row: row, expiresAt: time.Now().Add(dramaRefreshRetryDelay)}
+	}
+	call.row, call.err = row, err
+	delete(d.huangdouDetailPending, id)
+	close(call.done)
+	d.providerMu.Unlock()
+	return row, err
+}