feat: 固定创建真实采购任务 (#112)

admin/service/client_test.go

@@ -325,6 +325,36 @@ func TestClientAssignment_一人多客户端并按采购员隔离列表(t *testi
 	}
 }
 
+func TestListLivePurchaseClients_只返回可见在线且声明Live的客户端(t *testing.T) {
+	db := newTestDB(t)
+	admin, buyerA, _ := prepareClientAssignmentUsers(t, db)
+	now := time.Now().UTC()
+	clients := []model.Client{
+		{ClientID: "live-online", Name: "真实在线", LastSeenAt: now.Format(model.TimeLayout), Capabilities: `{"purchase_mode":"live"}`},
+		{ClientID: "dry-online", Name: "演练在线", LastSeenAt: now.Format(model.TimeLayout), Capabilities: `{"purchase_mode":"dry_run"}`},
+		{ClientID: "live-offline", Name: "真实离线", LastSeenAt: now.Add(-time.Hour).Format(model.TimeLayout), Capabilities: `{"purchase_mode":"live"}`},
+	}
+	for _, client := range clients {
+		if err := RegisterClient(db, client, true); err != nil {
+			t.Fatalf("登记客户端失败: %v", err)
+		}
+		if _, _, err := AssignClient(db, admin, client.ClientID, buyerA.UserID, now); err != nil {
+			t.Fatalf("绑定客户端失败: %v", err)
+		}
+	}
+	if _, err := db.Exec(`UPDATE clients SET last_seen_at=? WHERE client_id=?`, now.Add(-time.Hour).Format(model.TimeLayout), "live-offline"); err != nil {
+		t.Fatal(err)
+	}
+
+	rows, err := ListLivePurchaseClients(db, buyerA, time.Minute)
+	if err != nil {
+		t.Fatalf("读取真实采购客户端失败: %v", err)
+	}
+	if len(rows) != 1 || rows[0].ClientID != "live-online" {
+		t.Fatalf("只应返回在线 live 客户端，实际 %+v", rows)
+	}
+}
+
 func TestClientAssignment_转交解绑保留审计且不改任务(t *testing.T) {
 	db := newTestDB(t)
 	admin, buyerA, buyerB := prepareClientAssignmentUsers(t, db)

admin/service/purchase_workflow.go

@@ -170,6 +170,7 @@ type PurchaseTaskOptions struct {
 	ExecutionMode    model.TaskExecutionMode
 	LiveAcknowledged bool
 	LiveConfirmation string
+	ClientSeenAfter  string
 }
 
 // PurchaseTaskResult 同时返回已创建数量和每条无法创建的原因。
@@ -212,6 +213,15 @@ func CreatePurchaseTasksWithOptions(db *sql.DB, actor *model.User, requests []Pu
 	if !visible {
 		return result, fmt.Errorf("所选客户端不存在或不在当前账号可见范围")
 	}
+	if options.ClientSeenAfter != "" {
+		online, err := repository.ClientSeenAfter(tx, clientID, options.ClientSeenAfter)
+		if err != nil {
+			return result, err
+		}
+		if !online {
+			return result, fmt.Errorf("所选客户端已离线，请刷新页面后选择在线客户端")
+		}
+	}
 	executionMode := options.ExecutionMode
 	if executionMode == "" {
 		executionMode = model.TaskExecutionDryRun

admin/service/purchase_workflow_test.go

@@ -426,6 +426,26 @@ func TestCreatePurchaseTasksWithOptions_真实模式安全门禁(t *testing.T) {
 	}
 }
 
+func TestCreatePurchaseTasksWithOptions_页面打开后客户端离线会被拒绝(t *testing.T) {
+	db := newTestDB(t)
+	key := seedPurchasableWorkflow(t, db, "SYB-OFFLINE")
+	SaveSybMapping(db, "SYB-OFFLINE", key, "USR-1")
+	admin, _, _ := prepareClientAssignmentUsers(t, db)
+	RegisterClient(db, model.Client{ClientID: "CLIENT-OFFLINE", Capabilities: `{"purchase_mode":"live"}`}, true)
+	if _, err := db.Exec(`UPDATE clients SET last_seen_at=? WHERE client_id=?`, "2026-08-10T08:00:00Z", "CLIENT-OFFLINE"); err != nil {
+		t.Fatal(err)
+	}
+
+	_, err := CreatePurchaseTasksWithOptions(db, admin,
+		[]PurchaseTaskRequest{{SybID: "SYB-OFFLINE", MaxPriceCent: 4200}},
+		PurchaseTaskOptions{ClientID: "CLIENT-OFFLINE", ExecutionMode: model.TaskExecutionLive,
+			LiveAcknowledged: true, LiveConfirmation: LivePurchaseConfirmation,
+			ClientSeenAfter: "2026-08-10T09:00:00Z"})
+	if err == nil || !strings.Contains(err.Error(), "已离线") {
+		t.Fatalf("离线客户端必须在创建事务内被拒绝: %v", err)
+	}
+}
+
 func TestParsePriceYuanToCent_精确转换(t *testing.T) {
 	for raw, want := range map[string]int64{"39.90": 3990, "1": 100, "0.01": 1, "12.3": 1230} {
 		got, err := ParsePriceYuanToCent(raw)

admin/service/service.go

@@ -205,6 +205,24 @@ func ListAssignableClients(db *sql.DB, actor *model.User, threshold time.Duratio
 	return ListClientViewsForUser(db, actor, "", threshold)
 }
 
+// ListLivePurchaseClients 返回当前用户能分配真实采购任务的在线客户端。
+//
+// 页面过滤只用于减少误选；创建任务时仍会在事务内重新校验可见范围和 live 能力。
+func ListLivePurchaseClients(db *sql.DB, actor *model.User, threshold time.Duration) ([]ClientView, error) {
+	clients, err := ListClientViewsForUser(db, actor, "", threshold)
+	if err != nil {
+		return nil, err
+	}
+	result := make([]ClientView, 0, len(clients))
+	for _, client := range clients {
+		if client.Status != "在线" || client.PurchaseMode != string(model.TaskExecutionLive) {
+			continue
+		}
+		result = append(result, client)
+	}
+	return result, nil
+}
+
 // ListActivePurchasers 返回管理员可选择的绑定目标。
 func ListActivePurchasers(db *sql.DB, actor *model.User) ([]model.User, error) {
 	if actor == nil || !actor.IsAdmin() {