Add tea comment and show comments of issues/pulls (#313)

show comments of PR

TODO: there needs to be a way to force running non-interactively

add `tea comment` to post a comment

add --comments flag, prompt only if necessary

don't prompt if --comments is provided, or output is piped

show comments for issues, add --comments flag

tea comment: print resulting comment

Merge branch 'master' into issue-172-comments

remove debug print statement

unrelated, but better than opening another PR for this ;)

Merge remote-tracking branch 'upstream/master' into issue-172-comments

ret err

fix lint

Co-authored-by: Norwin Roosen <git@nroo.de>
Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/313
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: 6543 <6543@obermui.de>
Co-Authored-By: Norwin <noerw@noreply.gitea.io>
Co-Committed-By: Norwin <noerw@noreply.gitea.io>

modules/print/comment.go

@@ -0,0 +1,44 @@
+// 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 print
+
+import (
+	"fmt"
+	"strings"
+
+	"code.gitea.io/sdk/gitea"
+)
+
+// Comments renders a list of comments to stdout
+func Comments(comments []*gitea.Comment) {
+	var out = make([]string, len(comments))
+	for i, c := range comments {
+		out[i] = formatComment(c)
+	}
+	outputMarkdown(fmt.Sprintf(
+		// this will become a heading by means of the first --- from a comment
+		"Comments\n%s",
+		strings.Join(out, "\n"),
+	))
+}
+
+// Comment renders a comment to stdout
+func Comment(c *gitea.Comment) {
+	outputMarkdown(formatComment(c))
+}
+
+func formatComment(c *gitea.Comment) string {
+	edited := ""
+	if c.Updated.After(c.Created) {
+		edited = fmt.Sprintf(" *(edited on %s)*", FormatTime(c.Updated))
+	}
+	return fmt.Sprintf(
+		"---\n\n**@%s** wrote on %s%s:\n\n%s\n",
+		c.Poster.UserName,
+		FormatTime(c.Created),
+		edited,
+		c.Body,
+	)
+}