[GH-26715] Added Pagination Support for IncomingWebHooks (#27502)

* Added Pagination Support for IncomingWebHooks

* Incorporated feedback from reviews

* Removed trailing spaces

* Restored deleted server en.json entries, fixed order in webapp en.json

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/public/model/client4.go

@@ -4983,6 +4983,24 @@ func (c *Client4) GetIncomingWebhooks(ctx context.Context, page int, perPage int
 	return iwl, BuildResponse(r), nil
 }
 
+// GetIncomingWebhooksWithCount returns a page of incoming webhooks on the system including the total count. Page counting starts at 0.
+func (c *Client4) GetIncomingWebhooksWithCount(ctx context.Context, page int, perPage int, etag string) (*IncomingWebhooksWithCount, *Response, error) {
+	query := fmt.Sprintf("?page=%v&per_page=%v&include_total_count="+c.boolString(true), page, perPage)
+	r, err := c.DoAPIGet(ctx, c.incomingWebhooksRoute()+query, etag)
+	if err != nil {
+		return nil, BuildResponse(r), err
+	}
+	defer closeBody(r)
+	var iwl *IncomingWebhooksWithCount
+	if r.StatusCode == http.StatusNotModified {
+		return iwl, BuildResponse(r), nil
+	}
+	if err := json.NewDecoder(r.Body).Decode(&iwl); err != nil {
+		return nil, nil, NewAppError("GetIncomingWebhooksWithCount", "api.unmarshal_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return iwl, BuildResponse(r), nil
+}
+
 // GetIncomingWebhooksForTeam returns a page of incoming webhooks for a team. Page counting starts at 0.
 func (c *Client4) GetIncomingWebhooksForTeam(ctx context.Context, teamId string, page int, perPage int, etag string) ([]*IncomingWebhook, *Response, error) {
 	query := fmt.Sprintf("?page=%v&per_page=%v&team_id=%v", page, perPage, teamId)

server/public/model/incoming_webhook.go

@@ -59,6 +59,11 @@ type IncomingWebhookRequest struct {
 	Priority    *PostPriority      `json:"priority"`
 }
 
+type IncomingWebhooksWithCount struct {
+	Webhooks   []*IncomingWebhook `json:"incoming_webhooks"`
+	TotalCount int64              `json:"total_count"`
+}
+
 func (o *IncomingWebhook) IsValid() *AppError {
 	if !IsValidId(o.Id) {
 		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.id.app_error", nil, "", http.StatusBadRequest)