Fix new release creation API to allow empty target (#5870)

* Fix new release creation API to allow empty target

* Add more test cases

* Update swagger

vendor/code.gitea.io/sdk/gitea/gitea.go

@@ -70,6 +70,8 @@ func (c *Client) getResponse(method, path string, header http.Header, body io.Re
 		return nil, errors.New("403 Forbidden")
 	case 404:
 		return nil, errors.New("404 Not Found")
+	case 409:
+		return nil, errors.New("409 Conflict")
 	case 422:
 		return nil, fmt.Errorf("422 Unprocessable Entity: %s", string(data))
 	}
@@ -77,7 +79,9 @@ func (c *Client) getResponse(method, path string, header http.Header, body io.Re
 	if resp.StatusCode/100 != 2 {
 		errMap := make(map[string]interface{})
 		if err = json.Unmarshal(data, &errMap); err != nil {
-			return nil, err
+			// when the JSON can't be parsed, data was probably empty or a plain string,
+			// so we try to return a helpful error anyway
+			return nil, fmt.Errorf("Unknown API Error: %d %s", resp.StatusCode, string(data))
 		}
 		return nil, errors.New(errMap["message"].(string))
 	}

vendor/code.gitea.io/sdk/gitea/hook.go

@@ -160,6 +160,9 @@ type PayloadCommit struct {
 	Verification *PayloadCommitVerification `json:"verification"`
 	// swagger:strfmt date-time
 	Timestamp time.Time `json:"timestamp"`
+	Added     []string  `json:"added"`
+	Removed   []string  `json:"removed"`
+	Modified  []string  `json:"modified"`
 }
 
 // PayloadCommitVerification represents the GPG verification of a commit

vendor/code.gitea.io/sdk/gitea/release.go

@@ -53,7 +53,7 @@ func (c *Client) GetRelease(user, repo string, id int64) (*Release, error) {
 type CreateReleaseOption struct {
 	// required: true
 	TagName      string `json:"tag_name" binding:"Required"`
-	Target       string `json:"target_commitish" binding:"Required"`
+	Target       string `json:"target_commitish"`
 	Title        string `json:"name"`
 	Note         string `json:"body"`
 	IsDraft      bool   `json:"draft"`

vendor/code.gitea.io/sdk/gitea/repo_commit.go

@@ -0,0 +1,48 @@
+// Copyright 2018 The Gogs Authors. All rights reserved.
+// Copyright 2019 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 gitea
+
+import (
+	"fmt"
+)
+
+// CommitMeta contains meta information of a commit in terms of API.
+type CommitMeta struct {
+	URL string `json:"url"`
+	SHA string `json:"sha"`
+}
+
+// CommitUser contains information of a user in the context of a commit.
+type CommitUser struct {
+	Name  string `json:"name"`
+	Email string `json:"email"`
+	Date  string `json:"date"`
+}
+
+// RepoCommit contains information of a commit in the context of a repository.
+type RepoCommit struct {
+	URL       string      `json:"url"`
+	Author    *CommitUser `json:"author"`
+	Committer *CommitUser `json:"committer"`
+	Message   string      `json:"message"`
+	Tree      *CommitMeta `json:"tree"`
+}
+
+// Commit contains information generated from a Git commit.
+type Commit struct {
+	*CommitMeta
+	HTMLURL    string        `json:"html_url"`
+	RepoCommit *RepoCommit   `json:"commit"`
+	Author     *User         `json:"author"`
+	Committer  *User         `json:"committer"`
+	Parents    []*CommitMeta `json:"parents"`
+}
+
+// GetSingleCommit returns a single commit
+func (c *Client) GetSingleCommit(user, repo, commitID string) (*Commit, error) {
+	commit := new(Commit)
+	return commit, c.getParsedResponse("GET", fmt.Sprintf("/repos/%s/%s/commits/%s", user, repo, commitID), nil, nil, &commit)
+}

vendor/code.gitea.io/sdk/gitea/repo_tag.go

@@ -0,0 +1,26 @@
+// Copyright 2019 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 gitea
+
+import (
+	"fmt"
+)
+
+// Tag represents a repository tag
+type Tag struct {
+	Name   string `json:"name"`
+	Commit struct {
+		SHA string `json:"sha"`
+		URL string `json:"url"`
+	} `json:"commit"`
+	ZipballURL string `json:"zipball_url"`
+	TarballURL string `json:"tarball_url"`
+}
+
+// ListRepoTags list all the branches of one repository
+func (c *Client) ListRepoTags(user, repo string) ([]*Tag, error) {
+	tags := make([]*Tag, 0, 10)
+	return tags, c.getParsedResponse("GET", fmt.Sprintf("/repos/%s/%s/tags", user, repo), nil, nil, &tags)
+}