Fix bug regarding multiple trello board selection

cmd/trello2mail/main.go

@@ -11,13 +11,21 @@ func main() {
 
 	// Get task list as markdown
 	trelloCtx := NewTrello(config.TrelloToken)
-	for _, trelloBoard := range trelloCtx.GetBoards() {
+
+	var trelloBoardsList []TrelloBoard
+	if len(config.TrelloUrl) > 0 {
+		trelloBoard := trelloCtx.GetBoard(config.TrelloUrl)
+		trelloBoardsList = append(trelloBoardsList, trelloBoard)
+	} else {
+		trelloBoardsList = trelloCtx.GetBoards()
+	}
+
+	for _, trelloBoard := range trelloBoardsList {
 		if !trelloBoard.Starred || trelloBoard.Closed {
 			continue
 		}
 		fmt.Printf("Loading board %s\n", trelloBoard.Name)
 
-		// trelloBoard := trelloCtx.GetBoard(config.TrelloUrl)
 		trelloMarkdown := trelloBoard.ExportToMarkdown()
 		trelloHtml := trelloBoard.ExportToHtml()
 		config.EmailSubject = fmt.Sprintf("Daily mail for %s", trelloBoard.Name)

cmd/trello2mail/transport.go

@@ -50,8 +50,8 @@ func NewTransportAuth(config SmtpConfig) *smtp.Auth {
 		return &auth
 
 	default:
+		return nil
 	}
-	return nil
 }
 
 func NewTransportTls(config SmtpConfig) *tls.Config {
@@ -108,6 +108,12 @@ func (ctx *TransportCtx) Dial() {
 }
 
 func (ctx *TransportCtx) Authenticate() {
+	// guard
+	if ctx.Auth == nil {
+		return
+	}
+
+	// ok, we have to
 	err := ctx.Client.Auth(*ctx.Auth)
 	if err != nil {
 		log.Panic(err)