3 files changed, 106 insertions, 5 deletions
diff --git a/bridge/core/bridge.go b/bridge/core/bridge.go
index 1b960e0e..d04e88e4 100644
--- a/bridge/core/bridge.go
+++ b/bridge/core/bridge.go
@@ -297,20 +297,20 @@ func (b *Bridge) ImportAll(since time.Time) error {
 	return importer.ImportAll(b.repo, since)
 }
 
-func (b *Bridge) ExportAll(since time.Time) error {
+func (b *Bridge) ExportAll(since time.Time) (<-chan ExportResult, error) {
 	exporter := b.getExporter()
 	if exporter == nil {
-		return ErrExportNotSupported
+		return nil, ErrExportNotSupported
 	}
 
 	err := b.ensureConfig()
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	err = b.ensureInit()
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	return exporter.ExportAll(b.repo, since)
diff --git a/bridge/core/export.go b/bridge/core/export.go
new file mode 100644
index 00000000..080ced80
--- /dev/null
+++ b/bridge/core/export.go
@@ -0,0 +1,101 @@
+package core
+
+import "fmt"
+
+type ExportEvent int
+
+const (
+	_ ExportEvent = iota
+	ExportEventBug
+	ExportEventComment
+	ExportEventCommentEdition
+	ExportEventStatusChange
+	ExportEventTitleEdition
+	ExportEventLabelChange
+	ExportEventNothing
+)
+
+type ExportResult struct {
+	Err    error
+	Event  ExportEvent
+	ID     string
+	Reason string
+}
+
+func (er ExportResult) String() string {
+	switch er.Event {
+	case ExportEventBug:
+		return "new issue"
+	case ExportEventComment:
+		return "new comment"
+	case ExportEventCommentEdition:
+		return "updated comment"
+	case ExportEventStatusChange:
+		return "changed status"
+	case ExportEventTitleEdition:
+		return "changed title"
+	case ExportEventLabelChange:
+		return "changed label"
+	case ExportEventNothing:
+		return fmt.Sprintf("no event: %v", er.Reason)
+	default:
+		panic("unknown export result")
+	}
+}
+
+func NewExportError(err error, reason string) ExportResult {
+	return ExportResult{
+		Err:    err,
+		Reason: reason,
+	}
+}
+
+func NewExportNothing(id string, reason string) ExportResult {
+	return ExportResult{
+		ID:     id,
+		Reason: reason,
+		Event:  ExportEventNothing,
+	}
+}
+
+func NewExportBug(id string) ExportResult {
+	return ExportResult{
+		ID:    id,
+		Event: ExportEventBug,
+	}
+}
+
+func NewExportComment(id string) ExportResult {
+	return ExportResult{
+		ID:    id,
+		Event: ExportEventComment,
+	}
+}
+
+func NewExportCommentEdition(id string) ExportResult {
+	return ExportResult{
+		ID:    id,
+		Event: ExportEventCommentEdition,
+	}
+}
+
+func NewExportStatusChange(id string) ExportResult {
+	return ExportResult{
+		ID:    id,
+		Event: ExportEventStatusChange,
+	}
+}
+
+func NewExportLabelChange(id string) ExportResult {
+	return ExportResult{
+		ID:    id,
+		Event: ExportEventLabelChange,
+	}
+}
+
+func NewExportTitleEdition(id string) ExportResult {
+	return ExportResult{
+		ID:    id,
+		Event: ExportEventTitleEdition,
+	}
+}
diff --git a/bridge/core/interfaces.go b/bridge/core/interfaces.go
index 37fdb3d7..76d66fb4 100644
--- a/bridge/core/interfaces.go
+++ b/bridge/core/interfaces.go
@@ -34,5 +34,5 @@ type Importer interface {
 
 type Exporter interface {
 	Init(conf Configuration) error
-	ExportAll(repo *cache.RepoCache, since time.Time) error
+	ExportAll(repo *cache.RepoCache, since time.Time) (<-chan ExportResult, error)
 }