@@ -0,0 +1,466 @@
+package gitlab
+
+import (
+ "fmt"
+ "time"
+
+ "github.com/pkg/errors"
+ "github.com/xanzy/go-gitlab"
+
+ "github.com/MichaelMure/git-bug/bridge/core"
+ "github.com/MichaelMure/git-bug/bug"
+ "github.com/MichaelMure/git-bug/cache"
+ "github.com/MichaelMure/git-bug/util/git"
+)
+
+var (
+ ErrMissingIdentityToken = errors.New("missing identity token")
+)
+
+const (
+ keyGitlabId = "gitlab-id"
+ keyGitlabUrl = "gitlab-url"
+ keyOrigin = "origin"
+)
+
+// gitlabExporter implement the Exporter interface
+type gitlabExporter struct {
+ conf core.Configuration
+
+ // cache identities clients
+ identityClient map[string]*gitlab.Client
+
+ // map identities with their tokens
+ identityToken map[string]string
+
+ // gitlab. repository ID
+ repositoryID string
+
+ // cache identifiers used to speed up exporting operations
+ // cleared for each bug
+ cachedOperationIDs map[string]string
+
+ // cache labels used to speed up exporting labels events
+ cachedLabels map[string]string
+}
+
+// Init .
+func (ge *gitlabExporter) Init(conf core.Configuration) error {
+ ge.conf = conf
+ //TODO: initialize with multiple tokens
+ ge.identityToken = make(map[string]string)
+ ge.identityClient = make(map[string]*gitlab.Client)
+ ge.cachedOperationIDs = make(map[string]string)
+ ge.cachedLabels = make(map[string]string)
+ return nil
+}
+
+// getIdentityClient return a gitlab v4 API client configured with the access token of the given identity.
+// if no client were found it will initialize it from the known tokens map and cache it for next use
+func (ge *gitlabExporter) getIdentityClient(id string) (*gitlab.Client, error) {
+ client, ok := ge.identityClient[id]
+ if ok {
+ return client, nil
+ }
+
+ // get token
+ token, ok := ge.identityToken[id]
+ if !ok {
+ return nil, ErrMissingIdentityToken
+ }
+
+ // create client
+ client = buildClient(token)
+ // cache client
+ ge.identityClient[id] = client
+
+ //client.Labels.CreateLabel()
+
+ return client, nil
+}
+
+// ExportAll export all event made by the current user to Gitlab
+func (ge *gitlabExporter) ExportAll(repo *cache.RepoCache, since time.Time) (<-chan core.ExportResult, error) {
+ out := make(chan core.ExportResult)
+
+ user, err := repo.GetUserIdentity()
+ if err != nil {
+ return nil, err
+ }
+
+ ge.identityToken[user.Id()] = ge.conf[keyToken]
+
+ // get repository node id
+ ge.repositoryID, err = getRepositoryNodeID(
+ "", "",
+ ge.conf[keyToken],
+ )
+
+ if err != nil {
+ return nil, err
+ }
+
+ go func() {
+ defer close(out)
+
+ var allIdentitiesIds []string
+ for id := range ge.identityToken {
+ allIdentitiesIds = append(allIdentitiesIds, id)
+ }
+
+ allBugsIds := repo.AllBugsIds()
+
+ for _, id := range allBugsIds {
+ b, err := repo.ResolveBug(id)
+ if err != nil {
+ out <- core.NewExportError(err, id)
+ return
+ }
+
+ snapshot := b.Snapshot()
+
+ // ignore issues created before since date
+ // TODO: compare the Lamport time instead of using the unix time
+ if snapshot.CreatedAt.Before(since) {
+ out <- core.NewExportNothing(b.Id(), "bug created before the since date")
+ continue
+ }
+
+ if snapshot.HasAnyActor(allIdentitiesIds...) {
+ // try to export the bug and it associated events
+ ge.exportBug(b, since, out)
+ } else {
+ out <- core.NewExportNothing(id, "not an actor")
+ }
+ }
+ }()
+
+ return out, nil
+}
+
+// exportBug publish bugs and related events
+func (ge *gitlabExporter) exportBug(b *cache.BugCache, since time.Time, out chan<- core.ExportResult) {
+ snapshot := b.Snapshot()
+
+ var bugGitlabID string
+ var bugGitlabURL string
+ var bugCreationHash string
+
+ // Special case:
+ // if a user try to export a bug that is not already exported to Gitlab (or imported
+ // from Gitlab) and we do not have the token of the bug author, there is nothing we can do.
+
+ // first operation is always createOp
+ createOp := snapshot.Operations[0].(*bug.CreateOperation)
+ author := snapshot.Author
+
+ // skip bug if origin is not allowed
+ origin, ok := snapshot.GetCreateMetadata(keyOrigin)
+ if ok && origin != target {
+ out <- core.NewExportNothing(b.Id(), fmt.Sprintf("issue tagged with origin: %s", origin))
+ return
+ }
+
+ // get gitlab bug ID
+ gitlabID, ok := snapshot.GetCreateMetadata(keyGitlabId)
+ if ok {
+ gitlabURL, ok := snapshot.GetCreateMetadata(keyGitlabUrl)
+ if !ok {
+ // if we find gitlab ID, gitlab URL must be found too
+ err := fmt.Errorf("expected to find gitlab issue URL")
+ out <- core.NewExportError(err, b.Id())
+ }
+
+ //FIXME:
+ // ignore issue comming from other repositories
+
+ out <- core.NewExportNothing(b.Id(), "bug already exported")
+ // will be used to mark operation related to a bug as exported
+ bugGitlabID = gitlabID
+ bugGitlabURL = gitlabURL
+
+ } else {
+ // check that we have a token for operation author
+ client, err := ge.getIdentityClient(author.Id())
+ if err != nil {
+ // if bug is still not exported and we do not have the author stop the execution
+ out <- core.NewExportNothing(b.Id(), fmt.Sprintf("missing author token"))
+ return
+ }
+
+ // create bug
+ id, url, err := createGitlabIssue(client, ge.repositoryID, createOp.Title, createOp.Message)
+ if err != nil {
+ err := errors.Wrap(err, "exporting gitlab issue")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ out <- core.NewExportBug(b.Id())
+
+ hash, err := createOp.Hash()
+ if err != nil {
+ err := errors.Wrap(err, "comment hash")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ // mark bug creation operation as exported
+ if err := markOperationAsExported(b, hash, id, url); err != nil {
+ err := errors.Wrap(err, "marking operation as exported")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ // commit operation to avoid creating multiple issues with multiple pushes
+ if err := b.CommitAsNeeded(); err != nil {
+ err := errors.Wrap(err, "bug commit")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ // cache bug gitlab ID and URL
+ bugGitlabID = id
+ bugGitlabURL = url
+ }
+
+ // get createOp hash
+ hash, err := createOp.Hash()
+ if err != nil {
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ bugCreationHash = hash.String()
+
+ // cache operation gitlab id
+ ge.cachedOperationIDs[bugCreationHash] = bugGitlabID
+
+ for _, op := range snapshot.Operations[1:] {
+ // ignore SetMetadata operations
+ if _, ok := op.(*bug.SetMetadataOperation); ok {
+ continue
+ }
+
+ // get operation hash
+ hash, err := op.Hash()
+ if err != nil {
+ err := errors.Wrap(err, "operation hash")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ // ignore operations already existing in gitlab (due to import or export)
+ // cache the ID of already exported or imported issues and events from Gitlab
+ if id, ok := op.GetMetadata(keyGitlabId); ok {
+ ge.cachedOperationIDs[hash.String()] = id
+ out <- core.NewExportNothing(hash.String(), "already exported operation")
+ continue
+ }
+
+ opAuthor := op.GetAuthor()
+ client, err := ge.getIdentityClient(opAuthor.Id())
+ if err != nil {
+ out <- core.NewExportNothing(hash.String(), "missing operation author token")
+ continue
+ }
+
+ var id, url string
+ switch op.(type) {
+ case *bug.AddCommentOperation:
+ opr := op.(*bug.AddCommentOperation)
+
+ // send operation to gitlab
+ id, url, err = addCommentGitlabIssue(client, bugGitlabID, opr.Message)
+ if err != nil {
+ err := errors.Wrap(err, "adding comment")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ out <- core.NewExportComment(hash.String())
+
+ // cache comment id
+ ge.cachedOperationIDs[hash.String()] = id
+
+ case *bug.EditCommentOperation:
+
+ opr := op.(*bug.EditCommentOperation)
+ targetHash := opr.Target.String()
+
+ // Since gitlab doesn't consider the issue body as a comment
+ if targetHash == bugCreationHash {
+
+ // case bug creation operation: we need to edit the Gitlab issue
+ if err := updateGitlabIssueBody(client, bugGitlabID, opr.Message); err != nil {
+ err := errors.Wrap(err, "editing issue")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ out <- core.NewExportCommentEdition(hash.String())
+
+ id = bugGitlabID
+ url = bugGitlabURL
+
+ } else {
+
+ // case comment edition operation: we need to edit the Gitlab comment
+ commentID, ok := ge.cachedOperationIDs[targetHash]
+ if !ok {
+ panic("unexpected error: comment id not found")
+ }
+
+ eid, eurl, err := editCommentGitlabIssue(client, commentID, opr.Message)
+ if err != nil {
+ err := errors.Wrap(err, "editing comment")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ out <- core.NewExportCommentEdition(hash.String())
+
+ // use comment id/url instead of issue id/url
+ id = eid
+ url = eurl
+ }
+
+ case *bug.SetStatusOperation:
+ opr := op.(*bug.SetStatusOperation)
+ if err := updateGitlabIssueStatus(client, bugGitlabID, opr.Status); err != nil {
+ err := errors.Wrap(err, "editing status")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ out <- core.NewExportStatusChange(hash.String())
+
+ id = bugGitlabID
+ url = bugGitlabURL
+
+ case *bug.SetTitleOperation:
+ opr := op.(*bug.SetTitleOperation)
+ if err := updateGitlabIssueTitle(client, bugGitlabID, opr.Title); err != nil {
+ err := errors.Wrap(err, "editing title")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ out <- core.NewExportTitleEdition(hash.String())
+
+ id = bugGitlabID
+ url = bugGitlabURL
+
+ case *bug.LabelChangeOperation:
+ opr := op.(*bug.LabelChangeOperation)
+ if err := ge.updateGitlabIssueLabels(client, bugGitlabID, opr.Added, opr.Removed); err != nil {
+ err := errors.Wrap(err, "updating labels")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ out <- core.NewExportLabelChange(hash.String())
+
+ id = bugGitlabID
+ url = bugGitlabURL
+
+ default:
+ panic("unhandled operation type case")
+ }
+
+ // mark operation as exported
+ if err := markOperationAsExported(b, hash, id, url); err != nil {
+ err := errors.Wrap(err, "marking operation as exported")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+
+ // commit at each operation export to avoid exporting same events multiple times
+ if err := b.CommitAsNeeded(); err != nil {
+ err := errors.Wrap(err, "bug commit")
+ out <- core.NewExportError(err, b.Id())
+ return
+ }
+ }
+}
+
+// getRepositoryNodeID request gitlab api v3 to get repository node id
+func getRepositoryNodeID(owner, project, token string) (string, error) {
+ return "", nil
+}
+
+func markOperationAsExported(b *cache.BugCache, target git.Hash, gitlabID, gitlabURL string) error {
+ _, err := b.SetMetadata(
+ target,
+ map[string]string{
+ keyGitlabId: gitlabID,
+ keyGitlabUrl: gitlabURL,
+ },
+ )
+
+ return err
+}
+
+// get label from gitlab
+func (ge *gitlabExporter) getGitlabLabelID(gc *gitlab.Client, label string) (string, error) {
+ return "", nil
+}
+
+func (ge *gitlabExporter) createGitlabLabel(label, color string) (string, error) {
+ return "", nil
+}
+
+func (ge *gitlabExporter) getOrCreateGitlabLabelID(gc *gitlab.Client, repositoryID string, label bug.Label) (string, error) {
+ // try to get label id
+ labelID, err := ge.getGitlabLabelID(gc, string(label))
+ if err == nil {
+ return labelID, nil
+ }
+
+ // RGBA to hex color
+ rgba := label.RGBA()
+ hexColor := fmt.Sprintf("%.2x%.2x%.2x", rgba.R, rgba.G, rgba.B)
+
+ labelID, err = ge.createGitlabLabel(string(label), hexColor)
+ if err != nil {
+ return "", err
+ }
+
+ return labelID, nil
+}
+
+func (ge *gitlabExporter) getLabelsIDs(gc *gitlab.Client, repositoryID string, labels []bug.Label) ([]string, error) {
+ return []string{}, nil
+}
+
+// create a gitlab. issue and return it ID
+func createGitlabIssue(gc *gitlab.Client, repositoryID, title, body string) (string, string, error) {
+ return "", "", nil
+
+}
+
+// add a comment to an issue and return it ID
+func addCommentGitlabIssue(gc *gitlab.Client, subjectID string, body string) (string, string, error) {
+ return "", "", nil
+}
+
+func editCommentGitlabIssue(gc *gitlab.Client, commentID, body string) (string, string, error) {
+ return "", "", nil
+}
+
+func updateGitlabIssueStatus(gc *gitlab.Client, id string, status bug.Status) error {
+ return nil
+}
+
+func updateGitlabIssueBody(gc *gitlab.Client, id string, body string) error {
+ return nil
+}
+
+func updateGitlabIssueTitle(gc *gitlab.Client, id, title string) error {
+ return nil
+}
+
+// update gitlab. issue labels
+func (ge *gitlabExporter) updateGitlabIssueLabels(gc *gitlab.Client, labelableID string, added, removed []bug.Label) error {
+ return nil
+}