Improve migrations to support migrating milestones/labels/issues/comments/pullrequests (#6290)

* add migrations

* fix package dependency

* fix lints

* implements migrations except pull requests

* add releases

* migrating releases

* fix bug

* fix lint

* fix migrate releases

* fix tests

* add rollback

* pull request migtations

* fix import

* fix go module vendor

* add tests for upload to gitea

* more migrate options

* fix swagger-check

* fix misspell

* add options on migration UI

* fix log error

* improve UI options on migrating

* add support for username password when migrating from github

* fix tests

* remove comments and fix migrate limitation

* improve error handles

* migrate API will also support migrate milestones/labels/issues/pulls/releases

* fix tests and remove unused codes

* add DownloaderFactory and docs about how to create a new Downloader

* fix misspell

* fix migration docs

* Add hints about migrate options on migration page

* fix tests

1 files changed, 41 insertions, 0 deletions

diff --git a/vendor/github.com/google/go-github/v24/github/timestamp.go b/vendor/github.com/google/go-github/v24/github/timestamp.go
new file mode 100644
index 0000000000..90929d5757
--- /dev/null
+++ b/vendor/github.com/google/go-github/v24/github/timestamp.go
@@ -0,0 +1,41 @@
+// Copyright 2013 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"strconv"
+	"time"
+)
+
+// Timestamp represents a time that can be unmarshalled from a JSON string
+// formatted as either an RFC3339 or Unix timestamp. This is necessary for some
+// fields since the GitHub API is inconsistent in how it represents times. All
+// exported methods of time.Time can be called on Timestamp.
+type Timestamp struct {
+	time.Time
+}
+
+func (t Timestamp) String() string {
+	return t.Time.String()
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+// Time is expected in RFC3339 or Unix format.
+func (t *Timestamp) UnmarshalJSON(data []byte) (err error) {
+	str := string(data)
+	i, err := strconv.ParseInt(str, 10, 64)
+	if err == nil {
+		t.Time = time.Unix(i, 0)
+	} else {
+		t.Time, err = time.Parse(`"`+time.RFC3339+`"`, str)
+	}
+	return
+}
+
+// Equal reports whether t and u are equal based on time.Equal
+func (t Timestamp) Equal(u Timestamp) bool {
+	return t.Time.Equal(u.Time)
+}