Gitea 2 Gitea migration (#12657)

* first draft

* update gitea sdk to 9e280adb4da

* adapt feat of updated sdk

* releases now works

* break the Reactions loop

* use convertGiteaLabel

* fix endless loop because paggination is not supported there !!!

* rename gitea local uploader files

* pagination can bite you in the ass

* Version Checks

* lint

* docs

* rename gitea sdk import to miss future conficts

* go-swagger: dont scan the sdk structs

* make sure gitea can shutdown gracefully

* make GetPullRequests and GetIssues similar

* rm useles

* Add Test: started ...

* ... add tests ...

* Add tests and Fixing things

* Workaround missing SHA

* Adapt: Ensure that all migration requests are cancellable
(714ab71ddc4260937b1480519d453d2dc4e77dd6)

* LINT: fix misspells in test set

* adapt ListMergeRequestAwardEmoji

* update sdk

* Return error when creating giteadownloader failed

* update sdk

* adapt new sdk

* adopt new features

* check version before err

* adapt: 'migrate service type switch page'

* optimize

* Fix DefaultBranch

* impruve

* handle subPath

* fix test

* Fix ReviewCommentPosition

* test GetReviews

* add DefaultBranch int test set

* rm unused

* Update SDK to v0.13.0

* addopt sdk changes

* found better link

* format template

* Update Docs

* Update Gitea SDK (v0.13.1)

6 files changed, 11 insertions, 10 deletions

diff --git a/modules/migrations/base/downloader.go b/modules/migrations/base/downloader.go
index 036abf22c9..5c47ed5305 100644
--- a/modules/migrations/base/downloader.go
+++ b/modules/migrations/base/downloader.go
@@ -15,7 +15,7 @@ import (
 
 // AssetDownloader downloads an asset (attachment) for a release
 type AssetDownloader interface {
-	GetAsset(tag string, id int64) (io.ReadCloser, error)
+	GetAsset(relTag string, relID, id int64) (io.ReadCloser, error)
 }
 
 // Downloader downloads the site repo informations
@@ -29,7 +29,7 @@ type Downloader interface {
 	GetLabels() ([]*Label, error)
 	GetIssues(page, perPage int) ([]*Issue, bool, error)
 	GetComments(issueNumber int64) ([]*Comment, error)
-	GetPullRequests(page, perPage int) ([]*PullRequest, error)
+	GetPullRequests(page, perPage int) ([]*PullRequest, bool, error)
 	GetReviews(pullRequestNumber int64) ([]*Review, error)
 }
 
@@ -209,23 +209,24 @@ func (d *RetryDownloader) GetComments(issueNumber int64) ([]*Comment, error) {
 }
 
 // GetPullRequests returns a repository's pull requests with retry
-func (d *RetryDownloader) GetPullRequests(page, perPage int) ([]*PullRequest, error) {
+func (d *RetryDownloader) GetPullRequests(page, perPage int) ([]*PullRequest, bool, error) {
 	var (
 		times = d.RetryTimes
 		prs   []*PullRequest
 		err   error
+		isEnd bool
 	)
 	for ; times > 0; times-- {
-		if prs, err = d.Downloader.GetPullRequests(page, perPage); err == nil {
-			return prs, nil
+		if prs, isEnd, err = d.Downloader.GetPullRequests(page, perPage); err == nil {
+			return prs, isEnd, nil
 		}
 		select {
 		case <-d.ctx.Done():
-			return nil, d.ctx.Err()
+			return nil, false, d.ctx.Err()
 		case <-time.After(time.Second * time.Duration(d.RetryDelay)):
 		}
 	}
-	return nil, err
+	return nil, false, err
 }
 
 // GetReviews returns pull requests reviews
diff --git a/modules/migrations/base/issue.go b/modules/migrations/base/issue.go
index 4e2bf25f17..b9625a23f6 100644
--- a/modules/migrations/base/issue.go
+++ b/modules/migrations/base/issue.go
@@ -23,4 +23,5 @@ type Issue struct {
 	Closed      *time.Time
 	Labels      []*Label
 	Reactions   []*Reaction
+	Assignees   []string
 }
diff --git a/modules/migrations/base/pullrequest.go b/modules/migrations/base/pullrequest.go
index 964512e137..ee612fbb8e 100644
--- a/modules/migrations/base/pullrequest.go
+++ b/modules/migrations/base/pullrequest.go
@@ -31,7 +31,6 @@ type PullRequest struct {
 	MergeCommitSHA string
 	Head           PullRequestBranch
 	Base           PullRequestBranch
-	Assignee       string
 	Assignees      []string
 	IsLocked       bool
 	Reactions      []*Reaction
diff --git a/modules/migrations/base/release.go b/modules/migrations/base/release.go
index 2a223920c7..c9b26ab1da 100644
--- a/modules/migrations/base/release.go
+++ b/modules/migrations/base/release.go
@@ -15,6 +15,7 @@ type ReleaseAsset struct {
 	DownloadCount *int
 	Created       time.Time
 	Updated       time.Time
+	DownloadURL   *string
 }
 
 // Release represents a release
diff --git a/modules/migrations/base/repo.go b/modules/migrations/base/repo.go
index d2052da90d..d26a911854 100644
--- a/modules/migrations/base/repo.go
+++ b/modules/migrations/base/repo.go
@@ -12,8 +12,6 @@ type Repository struct {
 	IsPrivate     bool
 	IsMirror      bool
 	Description   string
-	AuthUsername  string
-	AuthPassword  string
 	CloneURL      string
 	OriginalURL   string
 	DefaultBranch string
diff --git a/modules/migrations/base/review.go b/modules/migrations/base/review.go
index 8051fed653..0a9d03dae9 100644
--- a/modules/migrations/base/review.go
+++ b/modules/migrations/base/review.go
@@ -36,6 +36,7 @@ type ReviewComment struct {
 	TreePath  string
 	DiffHunk  string
 	Position  int
+	Line      int
 	CommitID  string
 	PosterID  int64
 	Reactions []*Reaction