Bring out expand/cmd into stand-alone functions

src/github.com/matrix-org/go-neb/services/github/github.go

@@ -45,56 +45,86 @@ func (s *githubService) RoomIDs() []string {
 	}
 	return keys
 }
+
+func (s *githubService) cmdGithubCreate(roomID, userID string, args []string) (interface{}, error) {
+	cli := s.githubClientFor(userID, false)
+	if cli == nil {
+		// TODO: send starter link
+		return &matrix.TextMessage{"m.notice",
+			userID + " : You have not linked your Github account."}, nil
+	}
+
+	if len(args) < 2 {
+		return &matrix.TextMessage{"m.notice",
+			`Usage: !github create owner/repo "issue title" "description"`}, nil
+	}
+
+	var (
+		ownerRepo string
+		title     *string
+		desc      *string
+	)
+	ownerRepo = args[0]
+	o := strings.Split(ownerRepo, "/")
+	if len(o) != 2 {
+		return &matrix.TextMessage{"m.notice",
+			`Usage: !github create owner/repo "issue title" "description"`}, nil
+	}
+
+	if len(args) == 2 {
+		title = &args[1]
+	} else if len(args) == 3 {
+		title = &args[1]
+		desc = &args[2]
+	} else { // > 3 args is probably a title without quote marks
+		joinedTitle := strings.Join(args[1:], " ")
+		title = &joinedTitle
+	}
+
+	issue, res, err := cli.Issues.Create(o[0], o[1], &github.IssueRequest{
+		Title: title,
+		Body:  desc,
+	})
+	if err != nil {
+		log.WithField("err", err).Print("Failed to create issue")
+		return nil, fmt.Errorf("Failed to create issue. HTTP %d", res.StatusCode)
+	}
+
+	return matrix.TextMessage{"m.notice", fmt.Sprintf("Created issue: %s", *issue.HTMLURL)}, nil
+}
+
+func (s *githubService) expandIssue(roomID, userID, matchingText string) interface{} {
+	cli := s.githubClientFor(userID, true)
+	owner, repo, num, err := ownerRepoNumberFromText(matchingText)
+	if err != nil {
+		log.WithError(err).WithField("text", matchingText).Print(
+			"Failed to extract owner,repo,number from matched string")
+		return nil
+	}
+
+	i, _, err := cli.Issues.Get(owner, repo, num)
+	if err != nil {
+		log.WithError(err).WithFields(log.Fields{
+			"owner":  owner,
+			"repo":   repo,
+			"number": num,
+		}).Print("Failed to fetch issue")
+		return nil
+	}
+
+	return &matrix.TextMessage{
+		"m.notice",
+		fmt.Sprintf("%s : %s", *i.HTMLURL, *i.Title),
+	}
+}
+
 func (s *githubService) Plugin(roomID string) plugin.Plugin {
 	return plugin.Plugin{
 		Commands: []plugin.Command{
 			plugin.Command{
 				Path: []string{"github", "create"},
 				Command: func(roomID, userID string, args []string) (interface{}, error) {
-					cli := s.githubClientFor(userID, false)
-					if cli == nil {
-						// TODO: send starter link
-						return &matrix.TextMessage{"m.notice",
-							userID + " : You have not linked your Github account."}, nil
-					}
-
-					if len(args) < 2 {
-						return &matrix.TextMessage{"m.notice",
-							`Usage: !github create owner/repo "issue title" "description"`}, nil
-					}
-
-					var (
-						ownerRepo string
-						title     *string
-						desc      *string
-					)
-					ownerRepo = args[0]
-					o := strings.Split(ownerRepo, "/")
-					if len(o) != 2 {
-						return &matrix.TextMessage{"m.notice",
-							`Usage: !github create owner/repo "issue title" "description"`}, nil
-					}
-
-					if len(args) == 2 {
-						title = &args[1]
-					} else if len(args) == 3 {
-						title = &args[1]
-						desc = &args[2]
-					} else { // > 3 args is probably a title without quote marks
-						joinedTitle := strings.Join(args[1:], " ")
-						title = &joinedTitle
-					}
-
-					issue, res, err := cli.Issues.Create(o[0], o[1], &github.IssueRequest{
-						Title: title,
-						Body:  desc,
-					})
-					if err != nil {
-						log.WithField("err", err).Print("Failed to create issue")
-						return nil, fmt.Errorf("Failed to create issue. HTTP %d", res.StatusCode)
-					}
-
-					return matrix.TextMessage{"m.notice", fmt.Sprintf("Created issue: %s", *issue.HTMLURL)}, nil
+					return s.cmdGithubCreate(roomID, userID, args)
 				},
 			},
 		},
@@ -102,28 +132,7 @@ func (s *githubService) Plugin(roomID string) plugin.Plugin {
 			plugin.Expansion{
 				Regexp: ownerRepoIssueRegex,
 				Expand: func(roomID, userID, matchingText string) interface{} {
-					cli := s.githubClientFor(userID, true)
-					owner, repo, num, err := ownerRepoNumberFromText(matchingText)
-					if err != nil {
-						log.WithError(err).WithField("text", matchingText).Print(
-							"Failed to extract owner,repo,number from matched string")
-						return nil
-					}
-
-					i, _, err := cli.Issues.Get(owner, repo, num)
-					if err != nil {
-						log.WithError(err).WithFields(log.Fields{
-							"owner":  owner,
-							"repo":   repo,
-							"number": num,
-						}).Print("Failed to fetch issue")
-						return nil
-					}
-
-					return &matrix.TextMessage{
-						"m.notice",
-						fmt.Sprintf("%s : %s", *i.HTMLURL, *i.Title),
-					}
+					return s.expandIssue(roomID, userID, matchingText)
 				},
 			},
 		},