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

model/client4.go

@@ -1217,6 +1217,16 @@ func (c *Client4) PatchChannel(channelId string, patch *ChannelPatch) (*Channel,
 	}
 }
 
+// RestoreChannel restores a previously deleted channel. Any missing fields are not updated.
+func (c *Client4) RestoreChannel(channelId string) (*Channel, *Response) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/restore", ""); err != nil {
+		return nil, &Response{StatusCode: r.StatusCode, Error: err}
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
 // CreateDirectChannel creates a direct message channel based on the two user
 // ids provided.
 func (c *Client4) CreateDirectChannel(userId1, userId2 string) (*Channel, *Response) {