sqs-browse: a lot of work to try to keep UI complexity down

Added the notion of controllers and a dispatcher which will queue up operations

internal/sqs-browse/controllers/forward.go

@@ -0,0 +1,39 @@
+package controllers
+
+import (
+	"context"
+	"github.com/lmika/awstools/internal/common/ui/uimodels"
+	"github.com/lmika/awstools/internal/sqs-browse/models"
+	"github.com/lmika/awstools/internal/sqs-browse/services/messages"
+	"github.com/pkg/errors"
+)
+
+type MessageSendingController struct {
+	messageService *messages.Service
+	targetQueue    string
+}
+
+func NewMessageSendingController(messageService *messages.Service, targetQueue string) *MessageSendingController {
+	return &MessageSendingController{
+		messageService: messageService,
+		targetQueue:    targetQueue,
+	}
+}
+
+func (msh *MessageSendingController) ForwardMessage(message models.Message) uimodels.Operation {
+	return uimodels.OperationFn(func(ctx context.Context) error {
+		uiCtx := uimodels.Ctx(ctx)
+
+		if msh.targetQueue == "" {
+			return errors.New("target queue not set")
+		}
+
+		messageId, err := msh.messageService.SendTo(ctx, message, msh.targetQueue)
+		if err != nil {
+			return errors.Wrapf(err, "cannot send message to %v", msh.targetQueue)
+		}
+
+		uiCtx.Message("Message sent to " + msh.targetQueue + ", id = " + messageId)
+		return nil
+	})
+}