1 files changed, 39 insertions, 0 deletions
diff --git a/receivepack/hook.go b/receivepack/hook.go
new file mode 100644
index 00000000..4c4a44ef
--- /dev/null
+++ b/receivepack/hook.go
@@ -0,0 +1,39 @@
+package receivepack
+
+import (
+	"context"
+
+	"codeberg.org/lindenii/furgit/objectid"
+	"codeberg.org/lindenii/furgit/objectstore"
+	"codeberg.org/lindenii/furgit/refstore"
+)
+
+// RefUpdate is one requested reference update presented to a receive-pack hook.
+type RefUpdate struct {
+	Name  string
+	OldID objectid.ObjectID
+	NewID objectid.ObjectID
+}
+
+// UpdateDecision is one hook decision for a requested reference update.
+type UpdateDecision struct {
+	Accept  bool
+	Message string
+}
+
+// HookRequest is the input presented to a receive-pack hook before quarantine
+// promotion and ref updates.
+type HookRequest struct {
+	Refs               refstore.ReadingStore
+	ExistingObjects    objectstore.Store
+	QuarantinedObjects objectstore.Store
+	Updates            []RefUpdate
+	PushOptions        []string
+}
+
+// Hook decides whether each requested update should proceed.
+//
+// The hook runs after pack ingestion into quarantine and before quarantine
+// promotion or ref updates. The returned decisions must have the same length as
+// HookRequest.Updates.
+type Hook func(context.Context, HookRequest) ([]UpdateDecision, error)