feat(webhooks): add route to get all available webhook events

pkg/models/webhooks.go

@@ -20,6 +20,7 @@ import (
 	"code.vikunja.io/api/pkg/events"
 	"code.vikunja.io/api/pkg/user"
 	"code.vikunja.io/web"
+	"sort"
 	"sync"
 	"time"
 	"xorm.io/xorm"
@@ -71,6 +72,17 @@ func RegisterEventForWebhook(event WebhookEvent) {
 	})
 }
 
+func GetAvailableWebhookEvents() []string {
+	evts := []string{}
+	for e := range availableWebhookEvents {
+		evts = append(evts, e)
+	}
+
+	sort.Strings(evts)
+
+	return evts
+}
+
 func (w *Webhook) Create(s *xorm.Session, a web.Auth) (err error) {
 	// TODO: check valid webhook events
 	w.CreatedByID = a.GetID()

pkg/routes/api/v1/webhooks.go

@@ -0,0 +1,27 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-present Vikunja and contributors. All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public Licensee as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public Licensee for more details.
+//
+// You should have received a copy of the GNU Affero General Public Licensee
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package v1
+
+import (
+	"code.vikunja.io/api/pkg/models"
+	"github.com/labstack/echo/v4"
+	"net/http"
+)
+
+func GetAvailableWebhookEvents(c echo.Context) error {
+	return c.JSON(http.StatusOK, models.GetAvailableWebhookEvents())
+}

pkg/routes/routes.go

@@ -585,6 +585,7 @@ func registerAPIRoutes(a *echo.Group) {
 	a.PUT("/project/:project/webhooks", webhookProvider.CreateWeb)
 	a.DELETE("/project/:project/webhooks/:webhook", webhookProvider.DeleteWeb)
 	a.POST("/project/:project/webhooks/:webhook", webhookProvider.UpdateWeb)
+	a.GET("/webhooks/events", apiv1.GetAvailableWebhookEvents)
 }
 
 func registerMigrations(m *echo.Group) {