Add interactive mode for tea milestone create (#310)

Implement interactive milestone creation

Return fmt.Errorf when title is empty

Incorporate deadline functionality

Use dateparse and cleanup CreateMilestone task

Signed-off-by: Martin Reboredo <yakoyoku@gmail.com>
Co-authored-by: Martin Reboredo <yakoyoku@gmail.com>
Reviewed-on: https://gitea.com/gitea/tea/pulls/310
Reviewed-by: Norwin <noerw@noreply.gitea.io>
Reviewed-by: 6543 <6543@obermui.de>
Co-Authored-By: Martin Reboredo <yakoyakoyokuyoku@noreply.gitea.io>
Co-Committed-By: Martin Reboredo <yakoyakoyokuyoku@noreply.gitea.io>

modules/task/milestone_create.go

@@ -0,0 +1,37 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package task
+
+import (
+	"fmt"
+	"time"
+
+	"code.gitea.io/tea/modules/config"
+	"code.gitea.io/tea/modules/print"
+
+	"code.gitea.io/sdk/gitea"
+)
+
+// CreateMilestone creates a milestone in the given repo and prints the result
+func CreateMilestone(login *config.Login, repoOwner, repoName, title, description string, deadline *time.Time, state gitea.StateType) error {
+
+	// title is required
+	if len(title) == 0 {
+		return fmt.Errorf("Title is required")
+	}
+
+	mile, _, err := login.Client().CreateMilestone(repoOwner, repoName, gitea.CreateMilestoneOption{
+		Title:       title,
+		Description: description,
+		Deadline:    deadline,
+		State:       state,
+	})
+	if err != nil {
+		return err
+	}
+
+	print.MilestoneDetails(mile)
+	return nil
+}