fix(promotion-import): 双实例目录配对 demo-1/2；配对含仅封面目录

Made-with: Cursor

server/cmd/promotion-import/README.md

@@ -2,7 +2,7 @@
 
 将 `web/promotion/视频发布/` 下映射表中的文件复制到 **`{upload}/sites/{site_id}/promotion/social/`**，并在 **`site_assets`** 集合插入记录（与后台「保留原文件名」上传到 `promotion/social` 一致）。
 
-对「操作与计算（一）（二）」等条目会**按顺序尝试多个源文件名**；若仍找不到且子目录内**恰好只有一个** `.mov` 或 `.jpg`，会自动选用（解决「有些视频有、有些 404」多为源文件名与映射不一致）。
+对「操作与计算（一）（二）」会尝试多组路径名、半角括号、子目录内**最大** `.mov`；若仍无法按「一/二」识别文件夹，会在 `视频发布` 下找出**恰好两个**含「实例」的兄弟目录（排除 AIWord/语音/发票），排序后**第一个 → demo-1、第二个 → demo-2**（文件夹名不含「一」也能配对）。
 
 ## 参数
 

server/cmd/promotion-import/main.go

@@ -17,6 +17,7 @@ import (
 	"log"
 	"os"
 	"path/filepath"
+	"sort"
 	"strings"
 	"time"
 
@@ -142,6 +143,107 @@ func discoverEpisodeDir(videoPublish, episode string) (dirName string, ok bool)
 	return hits[0], true
 }
 
+func dirHasMov(dir string) bool {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return false
+	}
+	for _, e := range entries {
+		if e.IsDir() {
+			continue
+		}
+		if strings.EqualFold(filepath.Ext(e.Name()), ".mov") {
+			return true
+		}
+	}
+	return false
+}
+
+func dirHasJpeg(dir string) bool {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return false
+	}
+	for _, e := range entries {
+		if e.IsDir() {
+			continue
+		}
+		ext := strings.ToLower(filepath.Ext(e.Name()))
+		if ext == ".jpg" || ext == ".jpeg" {
+			return true
+		}
+	}
+	return false
+}
+
+// 列出「操作与计算」类子目录：含「实例」、内有 .mov 或 .jpg（避免仅封面无 mov 的（一）被漏掉），排除 AIWord/语音/发票等
+func listCalcInstanceDirsForPairing(videoPublish string) []string {
+	entries, err := os.ReadDir(videoPublish)
+	if err != nil {
+		return nil
+	}
+	skipSubstr := []string{"AIWord", "语音", "发票", "全自动"}
+	var out []string
+outer:
+	for _, e := range entries {
+		if !e.IsDir() {
+			continue
+		}
+		n := e.Name()
+		if !strings.Contains(n, "实例") {
+			continue
+		}
+		for _, s := range skipSubstr {
+			if strings.Contains(n, s) {
+				continue outer
+			}
+		}
+		sub := filepath.Join(videoPublish, n)
+		if !dirHasMov(sub) && !dirHasJpeg(sub) {
+			continue
+		}
+		out = append(out, n)
+	}
+	return out
+}
+
+// 将目录排序为 demo-1 在前、demo-2 在后（优先认全角/半角「一」「二」标记）
+func orderCalcDirsForDemo12(dirs []string) []string {
+	if len(dirs) <= 1 {
+		return dirs
+	}
+	type scored struct {
+		name string
+		prio int
+	}
+	var xs []scored
+	for _, d := range dirs {
+		p := 100
+		switch {
+		case strings.Contains(d, "（一）") || strings.Contains(d, "(一)"):
+			p = 1
+		case strings.Contains(d, "（二）") || strings.Contains(d, "(二)"):
+			p = 2
+		case strings.Contains(d, "一") && !strings.Contains(d, "二"):
+			p = 5
+		case strings.Contains(d, "二"):
+			p = 6
+		}
+		xs = append(xs, scored{d, p})
+	}
+	sort.Slice(xs, func(i, j int) bool {
+		if xs[i].prio != xs[j].prio {
+			return xs[i].prio < xs[j].prio
+		}
+		return xs[i].name < xs[j].name
+	})
+	out := make([]string, len(xs))
+	for i, x := range xs {
+		out[i] = x.name
+	}
+	return out
+}
+
 func pickMediaInDir(videoPublish, dirName string, dstFile string) (absPath, relChosen string, ok bool) {
 	ext := strings.ToLower(filepath.Ext(dstFile))
 	if ext != ".mov" && ext != ".jpg" && ext != ".jpeg" {
@@ -221,7 +323,7 @@ func pickMediaInDir(videoPublish, dirName string, dstFile string) (absPath, relC
 	return filepath.Join(videoPublish, filepath.FromSlash(rel)), rel, true
 }
 
-func resolveSourceFile(videoPublish string, rule importRule) (absPath, relChosen string, ok bool) {
+func resolveSourceFile(videoPublish string, rule importRule, calcPair []string) (absPath, relChosen string, ok bool) {
 	for _, rel := range rule.SrcRels {
 		p := filepath.Join(videoPublish, filepath.FromSlash(rel))
 		if st, err := os.Stat(p); err == nil && !st.IsDir() {
@@ -252,6 +354,22 @@ func resolveSourceFile(videoPublish string, rule importRule) (absPath, relChosen
 			return abs, rel, true
 		}
 	}
+	// 恰好两个「实例」类目录且无法按名称命中时：排序后第 1 个 -> demo-1，第 2 个 -> demo-2
+	if rule.EpisodeScan == "一" && len(calcPair) >= 2 {
+		if abs, rel, ok := pickMediaInDir(videoPublish, calcPair[0], rule.Dst); ok {
+			return abs, rel, true
+		}
+	}
+	if rule.EpisodeScan == "一" && len(calcPair) == 1 {
+		if abs, rel, ok := pickMediaInDir(videoPublish, calcPair[0], rule.Dst); ok {
+			return abs, rel, true
+		}
+	}
+	if rule.EpisodeScan == "二" && len(calcPair) >= 2 {
+		if abs, rel, ok := pickMediaInDir(videoPublish, calcPair[1], rule.Dst); ok {
+			return abs, rel, true
+		}
+	}
 	return "", "", false
 }
 
@@ -281,6 +399,11 @@ func main() {
 	}
 	videoPublish = filepath.Clean(videoPublish)
 
+	calcPair := orderCalcDirsForDemo12(listCalcInstanceDirsForPairing(videoPublish))
+	if *dryRun && len(calcPair) > 0 {
+		log.Printf("[dry-run] 操作与计算类目录配对顺序(1<-[0], 2<-[1]): %v", calcPair)
+	}
+
 	uploadDir := *uploadRoot
 	if uploadDir == "" {
 		uploadDir = os.Getenv("UPLOAD_DIR")
@@ -325,7 +448,7 @@ func main() {
 
 	ok, skip, fail := 0, 0, 0
 	for _, m := range mappings {
-		from, srcRelUsed, found := resolveSourceFile(videoPublish, m)
+		from, srcRelUsed, found := resolveSourceFile(videoPublish, m, calcPair)
 		if !found {
 			log.Printf("SKIP 源文件不存在（已试备选路径/扫描子目录）: dst=%s episode=%s", m.Dst, m.EpisodeScan)
 			skip++