tenant: admin order export csv

backend/app/services/order.go

@@ -1,7 +1,9 @@
 package services
 
 import (
+	"bytes"
 	"context"
+	"encoding/csv"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -26,6 +28,158 @@ import (
 	"go.ipao.vip/gen/types"
 )
 
+// AdminOrderExportCSV 租户管理员导出订单列表（CSV 文本）。
+func (s *order) AdminOrderExportCSV(ctx context.Context, tenantID int64, filter *dto.AdminOrderListFilter) (*dto.AdminOrderExportResponse, error) {
+	if tenantID <= 0 {
+		return nil, errorx.ErrInvalidParameter.WithMsg("tenant_id must be > 0")
+	}
+	if filter == nil {
+		filter = &dto.AdminOrderListFilter{}
+	}
+
+	// 导出属于高消耗操作：限制最大行数，避免拖垮数据库。
+	const maxRows = 5000
+
+	logrus.WithFields(logrus.Fields{
+		"tenant_id":     tenantID,
+		"max_rows":      maxRows,
+		"user_id":       lo.FromPtr(filter.UserID),
+		"username":      filter.UsernameTrimmed(),
+		"content_id":    lo.FromPtr(filter.ContentID),
+		"content_title": filter.ContentTitleTrimmed(),
+		"type":          lo.FromPtr(filter.Type),
+		"status":        lo.FromPtr(filter.Status),
+	}).Info("services.order.admin.export_csv")
+
+	tbl, query := models.OrderQuery.QueryContext(ctx)
+	conds := []gen.Condition{tbl.TenantID.Eq(tenantID)}
+	if filter.UserID != nil {
+		conds = append(conds, tbl.UserID.Eq(*filter.UserID))
+	}
+	if filter.Type != nil {
+		conds = append(conds, tbl.Type.Eq(*filter.Type))
+	}
+	if filter.Status != nil {
+		conds = append(conds, tbl.Status.Eq(*filter.Status))
+	}
+	if filter.CreatedAtFrom != nil {
+		conds = append(conds, tbl.CreatedAt.Gte(*filter.CreatedAtFrom))
+	}
+	if filter.CreatedAtTo != nil {
+		conds = append(conds, tbl.CreatedAt.Lte(*filter.CreatedAtTo))
+	}
+	if filter.PaidAtFrom != nil {
+		conds = append(conds, tbl.PaidAt.Gte(*filter.PaidAtFrom))
+	}
+	if filter.PaidAtTo != nil {
+		conds = append(conds, tbl.PaidAt.Lte(*filter.PaidAtTo))
+	}
+	if filter.AmountPaidMin != nil {
+		conds = append(conds, tbl.AmountPaid.Gte(*filter.AmountPaidMin))
+	}
+	if filter.AmountPaidMax != nil {
+		conds = append(conds, tbl.AmountPaid.Lte(*filter.AmountPaidMax))
+	}
+
+	if username := filter.UsernameTrimmed(); username != "" {
+		uTbl, _ := models.UserQuery.QueryContext(ctx)
+		query = query.LeftJoin(uTbl, uTbl.ID.EqCol(tbl.UserID))
+		conds = append(conds, uTbl.Username.Like(database.WrapLike(username)))
+	}
+
+	needItemJoin := (filter.ContentID != nil && *filter.ContentID > 0) || filter.ContentTitleTrimmed() != ""
+	if needItemJoin {
+		oiTbl, _ := models.OrderItemQuery.QueryContext(ctx)
+		query = query.LeftJoin(oiTbl, oiTbl.OrderID.EqCol(tbl.ID))
+		if filter.ContentID != nil && *filter.ContentID > 0 {
+			conds = append(conds, oiTbl.ContentID.Eq(*filter.ContentID))
+		}
+		if title := filter.ContentTitleTrimmed(); title != "" {
+			cTbl, _ := models.ContentQuery.QueryContext(ctx)
+			query = query.LeftJoin(cTbl, cTbl.ID.EqCol(oiTbl.ContentID))
+			conds = append(conds, cTbl.Title.Like(database.WrapLike(title)))
+		}
+		query = query.Group(tbl.ID)
+	}
+
+	// 排序：复用 AdminOrderPage 的白名单，避免任意字段导致注入/慢查询。
+	orderBys := make([]field.Expr, 0, 4)
+	allowedAsc := map[string]field.Expr{
+		"id":          tbl.ID.Asc(),
+		"created_at":  tbl.CreatedAt.Asc(),
+		"paid_at":     tbl.PaidAt.Asc(),
+		"amount_paid": tbl.AmountPaid.Asc(),
+	}
+	allowedDesc := map[string]field.Expr{
+		"id":          tbl.ID.Desc(),
+		"created_at":  tbl.CreatedAt.Desc(),
+		"paid_at":     tbl.PaidAt.Desc(),
+		"amount_paid": tbl.AmountPaid.Desc(),
+	}
+	for _, f := range filter.AscFields() {
+		f = strings.TrimSpace(f)
+		if f == "" {
+			continue
+		}
+		if ob, ok := allowedAsc[f]; ok {
+			orderBys = append(orderBys, ob)
+		}
+	}
+	for _, f := range filter.DescFields() {
+		f = strings.TrimSpace(f)
+		if f == "" {
+			continue
+		}
+		if ob, ok := allowedDesc[f]; ok {
+			orderBys = append(orderBys, ob)
+		}
+	}
+	if len(orderBys) == 0 {
+		orderBys = append(orderBys, tbl.ID.Desc())
+	} else {
+		orderBys = append(orderBys, tbl.ID.Desc())
+	}
+
+	items, err := query.Where(conds...).Order(orderBys...).Limit(maxRows).Find()
+	if err != nil {
+		return nil, err
+	}
+
+	buf := &bytes.Buffer{}
+	w := csv.NewWriter(buf)
+	_ = w.Write([]string{"id", "tenant_id", "user_id", "type", "status", "amount_paid", "paid_at", "created_at"})
+	for _, it := range items {
+		if it == nil {
+			continue
+		}
+		paidAt := ""
+		if !it.PaidAt.IsZero() {
+			paidAt = it.PaidAt.UTC().Format(time.RFC3339)
+		}
+		_ = w.Write([]string{
+			fmt.Sprintf("%d", it.ID),
+			fmt.Sprintf("%d", it.TenantID),
+			fmt.Sprintf("%d", it.UserID),
+			string(it.Type),
+			string(it.Status),
+			fmt.Sprintf("%d", it.AmountPaid),
+			paidAt,
+			it.CreatedAt.UTC().Format(time.RFC3339),
+		})
+	}
+	w.Flush()
+	if err := w.Error(); err != nil {
+		return nil, err
+	}
+
+	filename := fmt.Sprintf("tenant_%d_orders_%s.csv", tenantID, time.Now().UTC().Format("20060102_150405"))
+	return &dto.AdminOrderExportResponse{
+		Filename:    filename,
+		ContentType: "text/csv",
+		CSV:         buf.String(),
+	}, nil
+}
+
 // PurchaseOrderSnapshot 为“内容购买订单”的下单快照（用于历史展示与争议审计）。
 type PurchaseOrderSnapshot struct {
 	// ContentID 内容ID。