feat: 统一 Admin 主列表分页 (#64)

admin/service/pdd.go

@@ -238,26 +238,42 @@ type PddProductView struct {
 
 // PddListResult 是列表页要的全部数据。
 type PddListResult struct {
-	Rows       []PddProductView
-	Total      int // 全部未删除记录数，不受筛选影响
-	Counts     map[model.CollectStatus]int
-	IsFiltered bool
+	Rows          []PddProductView
+	Total         int // 全部未删除记录数，不受筛选影响
+	FilteredTotal int // 当前筛选下的总数，用于页数和筛选状态
+	Page          int
+	TotalPages    int
+	Counts        map[model.CollectStatus]int
+	IsFiltered    bool
 }
 
 // ListPddProducts 查列表并把每一行翻成界面文字。
-func ListPddProducts(db *sql.DB, keyword string, status model.CollectStatus) (*PddListResult, error) {
-	rows, err := repository.ListPddProducts(db, keyword, status)
+func ListPddProducts(db *sql.DB, keyword string, status model.CollectStatus, requestedPage int) (*PddListResult, error) {
+	page := requestedPage
+	if page < 1 {
+		page = 1
+	}
+	rows, filteredTotal, err := repository.ListPddProducts(db, keyword, status, PageSize, (page-1)*PageSize)
 	if err != nil {
 		return nil, err
 	}
+	totalPages := TotalPages(filteredTotal)
+	clampedPage := ClampPage(page, totalPages)
+	if clampedPage != page {
+		page = clampedPage
+		rows, _, err = repository.ListPddProducts(db, keyword, status, PageSize, (page-1)*PageSize)
+		if err != nil {
+			return nil, err
+		}
+	}
 	counts, err := repository.CountPddProductsByStatus(db)
 	if err != nil {
 		return nil, err
 	}
 
 	result := &PddListResult{
-		Rows:       make([]PddProductView, 0, len(rows)),
-		Counts:     counts,
+		Rows: make([]PddProductView, 0, len(rows)), Counts: counts,
+		FilteredTotal: filteredTotal, Page: page, TotalPages: totalPages,
 		IsFiltered: strings.TrimSpace(keyword) != "" || status != "",
 	}
 	for _, n := range counts {
@@ -312,9 +328,9 @@ func (r *PddListResult) StatusLine() string {
 	}
 	line := strings.Join(parts, " · ")
 	if r.IsFiltered {
-		line = fmt.Sprintf("筛选出 %d 条 / %s", len(r.Rows), line)
+		line = fmt.Sprintf("筛选出 %d 条 / %s", r.FilteredTotal, line)
 	}
-	return line
+	return fmt.Sprintf("%s · 第 %d/%d 页", line, r.Page, r.TotalPages)
 }
 
 // ---------- 弹窗 ----------