Add /link command to retrieve chat invite link

telegram/commands.go

@@ -44,6 +44,7 @@ var chatCommands = map[string]command{
 	"block":      command{"", "blacklist current user"},
 	"unblock":    command{"", "unblacklist current user"},
 	"invite":     command{"id or @username", "add user to current chat"},
+	"link":       command{"", "get invite link for current chat"},
 	"kick":       command{"id or @username", "remove user to current chat"},
 	"ban":        command{"id or @username [hours]", "restrict @username from current chat for [hours] or forever"},
 	"leave":      command{"", "leave current chat"},
@@ -536,6 +537,15 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 		if err != nil {
 			return err.Error(), true
 		}
+	// get link to current chat
+	case "link":
+		link, err := c.client.CreateChatInviteLink(&client.CreateChatInviteLinkRequest{
+			ChatId: chatID,
+		})
+		if err != nil {
+			return err.Error(), true
+		}
+		return link.InviteLink, true
 	// kick @username from current group chat
 	case "kick":
 		if len(args) < 1 {