Add the ability to refresh a group.

.gitignore

@@ -1,3 +1,4 @@
 signal-cli-config
 src/main
 src/signal-cli-rest-api
+.idea/

src/api/api.go

@@ -1229,6 +1229,38 @@ func (a *Api) QuitGroup(c *gin.Context) {
 	c.Status(http.StatusNoContent)
 }
 
+// @Summary Refresh the state of a Signal Group.
+// @Tags Groups
+// @Description Refresh the state of a Signal Group.
+// @Accept  json
+// @Produce  json
+// @Success 204 {string} OK
+// @Failure 400 {object} Error
+// @Param number path string true "Registered Phone Number"
+// @Param groupid path string true "Group ID"
+// @Router /v1/groups/{number}/{groupid}/refresh [post]
+func (a *Api) RefreshGroup(c *gin.Context) {
+	number := c.Param("number")
+	if number == "" {
+		c.JSON(400, Error{Msg: "Couldn't process request - number missing"})
+		return
+	}
+
+	groupId := c.Param("groupid")
+	internalGroupId, err := client.ConvertGroupIdToInternalGroupId(groupId)
+	if err != nil {
+		c.JSON(400, Error{Msg: err.Error()})
+		return
+	}
+
+	err = a.signalClient.RefreshGroup(number, internalGroupId)
+	if err != nil {
+		c.JSON(400, Error{Msg: err.Error()})
+		return
+	}
+	c.Status(http.StatusNoContent)
+}
+
 // @Summary Send a reaction.
 // @Tags Reactions
 // @Description React to a message

src/client/client.go

@@ -1220,6 +1220,24 @@ func (s *SignalClient) QuitGroup(number string, groupId string) error {
 	return err
 }
 
+func (s *SignalClient) RefreshGroup(number string, groupId string) error {
+	var err error
+	if s.signalCliMode == JsonRpc {
+		type Request struct {
+			GroupId string `json:"groupId"`
+		}
+		request := Request{GroupId: groupId}
+		jsonRpc2Client, err := s.getJsonRpc2Client(number)
+		if err != nil {
+			return err
+		}
+		_, err = jsonRpc2Client.getRaw("updateGroup", request)
+	} else {
+		_, err = s.cliClient.Execute(true, []string{"--config", s.signalCliConfig, "-a", number, "updateGroup", "-g", groupId}, "")
+	}
+	return err
+}
+
 func (s *SignalClient) SendReaction(number string, recipient string, emoji string, target_author string, timestamp int64, remove bool) error {
 	// see https://github.com/AsamK/signal-cli/blob/master/man/signal-cli.1.adoc#sendreaction
 	var err error

src/main.go

@@ -186,6 +186,7 @@ func main() {
 			groups.POST(":number/:groupid/block", api.BlockGroup)
 			groups.POST(":number/:groupid/join", api.JoinGroup)
 			groups.POST(":number/:groupid/quit", api.QuitGroup)
+			groups.POST(":number/:groupid/refresh", api.RefreshGroup)
 			groups.POST(":number/:groupid/members", api.AddMembersToGroup)
 			groups.DELETE(":number/:groupid/members", api.RemoveMembersFromGroup)
 			groups.POST(":number/:groupid/admins", api.AddAdminsToGroup)