Add support to migrate from gogs (#14342)

Add support to migrate gogs:

  *  issues
  *  comments
  *  labels
  *  milestones
  *  wiki


Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Andrew Thornton <art27@cantab.net>

1 files changed, 345 insertions, 0 deletions

diff --git a/vendor/github.com/gogs/go-gogs-client/repo_hook.go b/vendor/github.com/gogs/go-gogs-client/repo_hook.go
new file mode 100644
index 0000000000..8896b4263e
--- /dev/null
+++ b/vendor/github.com/gogs/go-gogs-client/repo_hook.go
@@ -0,0 +1,345 @@
+// Copyright 2014 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 gogs
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+)
+
+var (
+	ErrInvalidReceiveHook = errors.New("invalid JSON payload received over webhook")
+)
+
+type Hook struct {
+	ID      int64             `json:"id"`
+	Type    string            `json:"type"`
+	URL     string            `json:"-"`
+	Config  map[string]string `json:"config"`
+	Events  []string          `json:"events"`
+	Active  bool              `json:"active"`
+	Updated time.Time         `json:"updated_at"`
+	Created time.Time         `json:"created_at"`
+}
+
+func (c *Client) ListRepoHooks(user, repo string) ([]*Hook, error) {
+	hooks := make([]*Hook, 0, 10)
+	return hooks, c.getParsedResponse("GET", fmt.Sprintf("/repos/%s/%s/hooks", user, repo), nil, nil, &hooks)
+}
+
+type CreateHookOption struct {
+	Type   string            `json:"type" binding:"Required"`
+	Config map[string]string `json:"config" binding:"Required"`
+	Events []string          `json:"events"`
+	Active bool              `json:"active"`
+}
+
+func (c *Client) CreateRepoHook(user, repo string, opt CreateHookOption) (*Hook, error) {
+	body, err := json.Marshal(&opt)
+	if err != nil {
+		return nil, err
+	}
+	h := new(Hook)
+	return h, c.getParsedResponse("POST", fmt.Sprintf("/repos/%s/%s/hooks", user, repo), jsonHeader, bytes.NewReader(body), h)
+}
+
+type EditHookOption struct {
+	Config map[string]string `json:"config"`
+	Events []string          `json:"events"`
+	Active *bool             `json:"active"`
+}
+
+func (c *Client) EditRepoHook(user, repo string, id int64, opt EditHookOption) error {
+	body, err := json.Marshal(&opt)
+	if err != nil {
+		return err
+	}
+	_, err = c.getResponse("PATCH", fmt.Sprintf("/repos/%s/%s/hooks/%d", user, repo, id), jsonHeader, bytes.NewReader(body))
+	return err
+}
+
+func (c *Client) DeleteRepoHook(user, repo string, id int64) error {
+	_, err := c.getResponse("DELETE", fmt.Sprintf("/repos/%s/%s/hooks/%d", user, repo, id), nil, nil)
+	return err
+}
+
+type Payloader interface {
+	JSONPayload() ([]byte, error)
+}
+
+type PayloadUser struct {
+	Name     string `json:"name"`
+	Email    string `json:"email"`
+	UserName string `json:"username"`
+}
+
+// FIXME: consider use same format as API when commits API are added.
+type PayloadCommit struct {
+	ID        string       `json:"id"`
+	Message   string       `json:"message"`
+	URL       string       `json:"url"`
+	Author    *PayloadUser `json:"author"`
+	Committer *PayloadUser `json:"committer"`
+
+	Added    []string `json:"added"`
+	Removed  []string `json:"removed"`
+	Modified []string `json:"modified"`
+
+	Timestamp time.Time `json:"timestamp"`
+}
+
+var (
+	_ Payloader = &CreatePayload{}
+	_ Payloader = &DeletePayload{}
+	_ Payloader = &ForkPayload{}
+	_ Payloader = &PushPayload{}
+	_ Payloader = &IssuesPayload{}
+	_ Payloader = &IssueCommentPayload{}
+	_ Payloader = &PullRequestPayload{}
+)
+
+// _________                        __
+// \_   ___ \_______   ____ _____ _/  |_  ____
+// /    \  \/\_  __ \_/ __ \\__  \\   __\/ __ \
+// \     \____|  | \/\  ___/ / __ \|  | \  ___/
+//  \______  /|__|    \___  >____  /__|  \___  >
+//         \/             \/     \/          \/
+
+type CreatePayload struct {
+	Ref           string      `json:"ref"`
+	RefType       string      `json:"ref_type"`
+	Sha           string      `json:"sha"`
+	DefaultBranch string      `json:"default_branch"`
+	Repo          *Repository `json:"repository"`
+	Sender        *User       `json:"sender"`
+}
+
+func (p *CreatePayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
+// ParseCreateHook parses create event hook content.
+func ParseCreateHook(raw []byte) (*CreatePayload, error) {
+	hook := new(CreatePayload)
+	if err := json.Unmarshal(raw, hook); err != nil {
+		return nil, err
+	}
+
+	// it is possible the JSON was parsed, however,
+	// was not from Gogs (maybe was from Bitbucket)
+	// So we'll check to be sure certain key fields
+	// were populated
+	switch {
+	case hook.Repo == nil:
+		return nil, ErrInvalidReceiveHook
+	case len(hook.Ref) == 0:
+		return nil, ErrInvalidReceiveHook
+	}
+	return hook, nil
+}
+
+// ________         .__          __
+// \______ \   ____ |  |   _____/  |_  ____
+//  |    |  \_/ __ \|  | _/ __ \   __\/ __ \
+//  |    `   \  ___/|  |_\  ___/|  | \  ___/
+// /_______  /\___  >____/\___  >__|  \___  >
+//         \/     \/          \/          \/
+
+type PusherType string
+
+const (
+	PUSHER_TYPE_USER PusherType = "user"
+)
+
+type DeletePayload struct {
+	Ref        string      `json:"ref"`
+	RefType    string      `json:"ref_type"`
+	PusherType PusherType  `json:"pusher_type"`
+	Repo       *Repository `json:"repository"`
+	Sender     *User       `json:"sender"`
+}
+
+func (p *DeletePayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
+// ___________           __
+// \_   _____/__________|  | __
+//  |    __)/  _ \_  __ \  |/ /
+//  |     \(  <_> )  | \/    <
+//  \___  / \____/|__|  |__|_ \
+//      \/                   \/
+
+type ForkPayload struct {
+	Forkee *Repository `json:"forkee"`
+	Repo   *Repository `json:"repository"`
+	Sender *User       `json:"sender"`
+}
+
+func (p *ForkPayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
+// __________             .__
+// \______   \__ __  _____|  |__
+//  |     ___/  |  \/  ___/  |  \
+//  |    |   |  |  /\___ \|   Y  \
+//  |____|   |____//____  >___|  /
+//                      \/     \/
+
+// PushPayload represents a payload information of push event.
+type PushPayload struct {
+	Ref        string           `json:"ref"`
+	Before     string           `json:"before"`
+	After      string           `json:"after"`
+	CompareURL string           `json:"compare_url"`
+	Commits    []*PayloadCommit `json:"commits"`
+	Repo       *Repository      `json:"repository"`
+	Pusher     *User            `json:"pusher"`
+	Sender     *User            `json:"sender"`
+}
+
+func (p *PushPayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
+// ParsePushHook parses push event hook content.
+func ParsePushHook(raw []byte) (*PushPayload, error) {
+	hook := new(PushPayload)
+	if err := json.Unmarshal(raw, hook); err != nil {
+		return nil, err
+	}
+
+	switch {
+	case hook.Repo == nil:
+		return nil, ErrInvalidReceiveHook
+	case len(hook.Ref) == 0:
+		return nil, ErrInvalidReceiveHook
+	}
+	return hook, nil
+}
+
+// Branch returns branch name from a payload
+func (p *PushPayload) Branch() string {
+	return strings.Replace(p.Ref, "refs/heads/", "", -1)
+}
+
+// .___
+// |   | ______ ________ __   ____
+// |   |/  ___//  ___/  |  \_/ __ \
+// |   |\___ \ \___ \|  |  /\  ___/
+// |___/____  >____  >____/  \___  >
+//          \/     \/            \/
+
+type HookIssueAction string
+
+const (
+	HOOK_ISSUE_OPENED        HookIssueAction = "opened"
+	HOOK_ISSUE_CLOSED        HookIssueAction = "closed"
+	HOOK_ISSUE_REOPENED      HookIssueAction = "reopened"
+	HOOK_ISSUE_EDITED        HookIssueAction = "edited"
+	HOOK_ISSUE_ASSIGNED      HookIssueAction = "assigned"
+	HOOK_ISSUE_UNASSIGNED    HookIssueAction = "unassigned"
+	HOOK_ISSUE_LABEL_UPDATED HookIssueAction = "label_updated"
+	HOOK_ISSUE_LABEL_CLEARED HookIssueAction = "label_cleared"
+	HOOK_ISSUE_MILESTONED    HookIssueAction = "milestoned"
+	HOOK_ISSUE_DEMILESTONED  HookIssueAction = "demilestoned"
+	HOOK_ISSUE_SYNCHRONIZED  HookIssueAction = "synchronized"
+)
+
+type ChangesFromPayload struct {
+	From string `json:"from"`
+}
+
+type ChangesPayload struct {
+	Title *ChangesFromPayload `json:"title,omitempty"`
+	Body  *ChangesFromPayload `json:"body,omitempty"`
+}
+
+// IssuesPayload represents a payload information of issues event.
+type IssuesPayload struct {
+	Action     HookIssueAction `json:"action"`
+	Index      int64           `json:"number"`
+	Issue      *Issue          `json:"issue"`
+	Changes    *ChangesPayload `json:"changes,omitempty"`
+	Repository *Repository     `json:"repository"`
+	Sender     *User           `json:"sender"`
+}
+
+func (p *IssuesPayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
+type HookIssueCommentAction string
+
+const (
+	HOOK_ISSUE_COMMENT_CREATED HookIssueCommentAction = "created"
+	HOOK_ISSUE_COMMENT_EDITED  HookIssueCommentAction = "edited"
+	HOOK_ISSUE_COMMENT_DELETED HookIssueCommentAction = "deleted"
+)
+
+// IssueCommentPayload represents a payload information of issue comment event.
+type IssueCommentPayload struct {
+	Action     HookIssueCommentAction `json:"action"`
+	Issue      *Issue                 `json:"issue"`
+	Comment    *Comment               `json:"comment"`
+	Changes    *ChangesPayload        `json:"changes,omitempty"`
+	Repository *Repository            `json:"repository"`
+	Sender     *User                  `json:"sender"`
+}
+
+func (p *IssueCommentPayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
+// __________      .__  .__    __________                                     __
+// \______   \__ __|  | |  |   \______   \ ____  ________ __   ____   _______/  |_
+//  |     ___/  |  \  | |  |    |       _// __ \/ ____/  |  \_/ __ \ /  ___/\   __\
+//  |    |   |  |  /  |_|  |__  |    |   \  ___< <_|  |  |  /\  ___/ \___ \  |  |
+//  |____|   |____/|____/____/  |____|_  /\___  >__   |____/  \___  >____  > |__|
+//                                     \/     \/   |__|           \/     \/
+
+// PullRequestPayload represents a payload information of pull request event.
+type PullRequestPayload struct {
+	Action      HookIssueAction `json:"action"`
+	Index       int64           `json:"number"`
+	PullRequest *PullRequest    `json:"pull_request"`
+	Changes     *ChangesPayload `json:"changes,omitempty"`
+	Repository  *Repository     `json:"repository"`
+	Sender      *User           `json:"sender"`
+}
+
+func (p *PullRequestPayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}
+
+// __________       .__
+// \______   \ ____ |  |   ____ _____    ______ ____
+//  |       _// __ \|  | _/ __ \\__  \  /  ___// __ \
+//  |    |   \  ___/|  |_\  ___/ / __ \_\___ \\  ___/
+//  |____|_  /\___  >____/\___  >____  /____  >\___  >
+//         \/     \/          \/     \/     \/     \/
+
+type HookReleaseAction string
+
+const (
+	HOOK_RELEASE_PUBLISHED HookReleaseAction = "published"
+)
+
+// ReleasePayload represents a payload information of release event.
+type ReleasePayload struct {
+	Action     HookReleaseAction `json:"action"`
+	Release    *Release          `json:"release"`
+	Repository *Repository       `json:"repository"`
+	Sender     *User             `json:"sender"`
+}
+
+func (p *ReleasePayload) JSONPayload() ([]byte, error) {
+	return json.MarshalIndent(p, "", "  ")
+}