api: support listing repository tags (#6656)

Co-authored-by: zhouzhibo <zhouzhibo>
Co-authored-by: Joe Chen <jc@unknwon.io>

3 files changed, 43 insertions, 0 deletions

diff --git a/internal/route/api/v1/api.go b/internal/route/api/v1/api.go
index a662f55f..62c933ad 100644
--- a/internal/route/api/v1/api.go
+++ b/internal/route/api/v1/api.go
@@ -280,6 +280,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 					m.Get("/:sha", repo.GetRepoGitTree)
 				})
 				m.Get("/forks", repo.ListForks)
+				m.Get("/tags", repo.ListTags)
 				m.Group("/branches", func() {
 					m.Get("", repo.ListBranches)
 					m.Get("/*", repo.GetBranch)
diff --git a/internal/route/api/v1/convert/convert.go b/internal/route/api/v1/convert/convert.go
index a374efc1..bf5aabbd 100644
--- a/internal/route/api/v1/convert/convert.go
+++ b/internal/route/api/v1/convert/convert.go
@@ -30,6 +30,18 @@ func ToBranch(b *db.Branch, c *git.Commit) *api.Branch {
 	}
 }
 
+type Tag struct {
+	Name   string             `json:"name"`
+	Commit *api.PayloadCommit `json:"commit"`
+}
+
+func ToTag(b *db.Tag, c *git.Commit) *Tag {
+	return &Tag{
+		Name:   b.Name,
+		Commit: ToCommit(c),
+	}
+}
+
 func ToCommit(c *git.Commit) *api.PayloadCommit {
 	authorUsername := ""
 	author, err := db.GetUserByEmail(c.Author.Email)
diff --git a/internal/route/api/v1/repo/tag.go b/internal/route/api/v1/repo/tag.go
new file mode 100644
index 00000000..73b7e064
--- /dev/null
+++ b/internal/route/api/v1/repo/tag.go
@@ -0,0 +1,30 @@
+// Copyright 2021 The Gogs 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 repo
+
+import (
+	"gogs.io/gogs/internal/context"
+	"gogs.io/gogs/internal/route/api/v1/convert"
+)
+
+func ListTags(c *context.APIContext) {
+	tags, err := c.Repo.Repository.GetTags()
+	if err != nil {
+		c.Error(err, "get tags")
+		return
+	}
+
+	apiTags := make([]*convert.Tag, len(tags))
+	for i := range tags {
+		commit, err := tags[i].GetCommit()
+		if err != nil {
+			c.Error(err, "get commit")
+			return
+		}
+		apiTags[i] = convert.ToTag(tags[i], commit)
+	}
+
+	c.JSONSuccess(&apiTags)
+}