1 files changed, 94 insertions, 0 deletions
diff --git a/receivepack/receivepack.go b/receivepack/receivepack.go
new file mode 100644
index 00000000..9f4a582b
--- /dev/null
+++ b/receivepack/receivepack.go
@@ -0,0 +1,94 @@
+package receivepack
+
+import (
+	"context"
+	"io"
+
+	"codeberg.org/lindenii/furgit/format/pktline"
+	common "codeberg.org/lindenii/furgit/protocol/v0v1/server"
+	protoreceive "codeberg.org/lindenii/furgit/protocol/v0v1/server/receivepack"
+	"codeberg.org/lindenii/furgit/receivepack/internal/service"
+)
+
+// ReceivePack serves one receive-pack session over r/w.
+func ReceivePack(
+	ctx context.Context,
+	w pktline.WriteFlusher,
+	e io.Writer,
+	r io.Reader,
+	opts Options,
+) error {
+	_ = e // TODO: Use stderr/progress sink explicitly as hook/progress behavior expands.
+
+	err := validateOptions(opts)
+	if err != nil {
+		return err
+	}
+
+	version := parseVersion(opts.GitProtocol)
+
+	base := common.NewSession(r, w, common.Options{
+		Version:   version,
+		Algorithm: opts.Algorithm,
+	})
+
+	protoSession := protoreceive.NewSession(base, protoreceive.Capabilities{
+		ReportStatus:   true,
+		ReportStatusV2: true,
+		DeleteRefs:     true,
+		SideBand64K:    true,
+		Quiet:          true,
+		Atomic:         true,
+		OfsDelta:       true,
+		PushOptions:    true,
+		ObjectFormat:   opts.Algorithm,
+		// TODO: PushCertNonce, SessionID, Agent, whatever.
+	})
+
+	refs, err := advertisedRefs(opts)
+	if err != nil {
+		return err
+	}
+
+	err = protoSession.AdvertiseRefs(common.Advertisement{Refs: refs})
+	if err != nil {
+		return err
+	}
+
+	req, err := protoSession.ReadRequest()
+	if err != nil {
+		return err
+	}
+
+	serviceReq := &service.Request{
+		Commands:     translateCommands(req.Commands),
+		PushOptions:  append([]string(nil), req.PushOptions...),
+		DeleteOnly:   req.DeleteOnly,
+		PackExpected: req.PackExpected,
+		Pack:         r,
+	}
+
+	svc := service.New(service.Options{
+		Algorithm:       opts.Algorithm,
+		Refs:            opts.Refs,
+		ExistingObjects: opts.ExistingObjects,
+		ObjectsRoot:     opts.ObjectsRoot,
+	})
+
+	result, err := svc.Execute(ctx, serviceReq)
+	if err != nil {
+		return err
+	}
+
+	protoResult := translateResult(result)
+
+	if req.Capabilities.ReportStatusV2 {
+		return protoSession.WriteReportStatusV2(protoResult)
+	}
+
+	if req.Capabilities.ReportStatus {
+		return protoSession.WriteReportStatus(protoResult)
+	}
+
+	return nil
+}