introduce GET /notifications/new

Author: 6543

models/notification.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"path"
 
+	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"
@@ -294,6 +295,20 @@ func notificationsForUser(e Engine, user *User, statuses []NotificationStatus, p
 	return
 }
 
+// UnreadAvailable check if unread notifications exist
+func UnreadAvailable(user *User) bool {
+	return unreadAvailable(x, user.ID)
+}
+
+func unreadAvailable(e Engine, userID int64) bool {
+	exist, err := e.Where("user_id = ?", userID).And("status = ?", NotificationStatusUnread).Get(new(Notification))
+	if err != nil {
+		log.Error("newsAvailable", err)
+		return false
+	}
+	return exist
+}
+
 // APIFormat converts a Notification to api.NotificationThread
 func (n *Notification) APIFormat() *api.NotificationThread {
 	result := &api.NotificationThread{

routers/api/v1/api.go

@@ -518,6 +518,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 			m.Combo("").
 				Get(notify.ListNotifications).
 				Put(notify.ReadNotifications)
+			m.Get("/new", notify.NewAvailable)
 			m.Combo("/threads/:id").
 				Get(notify.GetThread).
 				Patch(notify.ReadThread)

routers/api/v1/notify/notifications.go

@@ -0,0 +1,30 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package notify
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/context"
+)
+
+// NewAvailable check if unread notifications exist
+func NewAvailable(ctx *context.APIContext) {
+	// swagger:operation GET /notifications/new notification notifyNewAvailable
+	// ---
+	// summary: Check if unread notifications exist
+	// responses:
+	//   "204":
+	//     description: No unread notification
+	//   "302":
+	//     description: Unread notification found
+
+	if models.UnreadAvailable(ctx.User) {
+		ctx.Status(http.StatusFound)
+	} else {
+		ctx.Status(http.StatusNoContent)
+	}
+}

templates/swagger/v1_json.tmpl

@@ -494,6 +494,23 @@
         }
       }
     },
+    "/notifications/new": {
+      "get": {
+        "tags": [
+          "notification"
+        ],
+        "summary": "Check if unread notifications exist",
+        "operationId": "notifyNewAvailable",
+        "responses": {
+          "204": {
+            "description": "No unread notification"
+          },
+          "302": {
+            "description": "Unread notification found"
+          }
+        }
+      }
+    },
     "/notifications/threads/{id}": {
       "get": {
         "consumes": [