PLT-6019: Add APIv4 Endpoint for restoring Channels (#6263)

api4/channel.go

@@ -29,6 +29,7 @@ func InitChannel() {
 	BaseRoutes.Channel.Handle("", ApiSessionRequired(getChannel)).Methods("GET")
 	BaseRoutes.Channel.Handle("", ApiSessionRequired(updateChannel)).Methods("PUT")
 	BaseRoutes.Channel.Handle("/patch", ApiSessionRequired(patchChannel)).Methods("PUT")
+	BaseRoutes.Channel.Handle("/restore", ApiSessionRequired(restoreChannel)).Methods("POST")
 	BaseRoutes.Channel.Handle("", ApiSessionRequired(deleteChannel)).Methods("DELETE")
 	BaseRoutes.Channel.Handle("/stats", ApiSessionRequired(getChannelStats)).Methods("GET")
 	BaseRoutes.Channel.Handle("/pinned", ApiSessionRequired(getPinnedPosts)).Methods("GET")
@@ -180,6 +181,36 @@ func patchChannel(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func restoreChannel(c *Context, w http.ResponseWriter, r *http.Request) {
+	c.RequireChannelId()
+	if c.Err != nil {
+		return
+	}
+
+	var channel *model.Channel
+	var err *model.AppError
+	if channel, err = app.GetChannel(c.Params.ChannelId); err != nil {
+		c.Err = err
+		return
+	}
+	teamId := channel.TeamId
+
+	if !app.SessionHasPermissionToTeam(c.Session, teamId, model.PERMISSION_MANAGE_TEAM) {
+		c.SetPermissionError(model.PERMISSION_MANAGE_TEAM)
+		return
+	}
+
+	channel, err = app.RestoreChannel(channel)
+	if err != nil {
+		c.Err = err
+		return
+	}
+
+	c.LogAudit("name=" + channel.Name)
+	w.Write([]byte(channel.ToJson()))
+
+}
+
 func CanManageChannel(c *Context, channel *model.Channel) bool {
 	if channel.Type == model.CHANNEL_OPEN && !app.SessionHasPermissionToChannel(c.Session, channel.Id, model.PERMISSION_MANAGE_PUBLIC_CHANNEL_PROPERTIES) {
 		c.SetPermissionError(model.PERMISSION_MANAGE_PUBLIC_CHANNEL_PROPERTIES)

api4/channel_test.go

@@ -1067,6 +1067,32 @@ func TestDeleteChannel(t *testing.T) {
 	CheckNoError(t, resp)
 }
 
+func TestRestoreChannel(t *testing.T) {
+	th := Setup().InitBasic().InitSystemAdmin()
+	defer TearDown()
+	Client := th.Client
+
+	publicChannel1 := th.CreatePublicChannel()
+	Client.DeleteChannel(publicChannel1.Id)
+
+	privateChannel1 := th.CreatePrivateChannel()
+	Client.DeleteChannel(privateChannel1.Id)
+
+	_, resp := Client.RestoreChannel(publicChannel1.Id)
+	CheckForbiddenStatus(t, resp)
+
+	_, resp = Client.RestoreChannel(privateChannel1.Id)
+	CheckForbiddenStatus(t, resp)
+
+	th.LoginTeamAdmin()
+
+	_, resp = Client.RestoreChannel(publicChannel1.Id)
+	CheckOKStatus(t, resp)
+
+	_, resp = Client.RestoreChannel(privateChannel1.Id)
+	CheckOKStatus(t, resp)
+	}
+
 func TestGetChannelByName(t *testing.T) {
 	th := Setup().InitBasic().InitSystemAdmin()
 	defer TearDown()