From cde3f90d2d41d2fd459492f31ef358a3eba145c2 Mon Sep 17 00:00:00 2001
From: Derrick Hammer <derrick@derrickhammer.com>
Date: Wed, 17 Jan 2024 16:05:11 -0500
Subject: [PATCH] feat: implement GET /s5/registry

---
 api/s5.go          |  3 +++
 api/s5/http.go     | 30 ++++++++++++++++++++++++++++++
 api/s5/messages.go |  6 ++++++
 3 files changed, 39 insertions(+)

diff --git a/api/s5.go b/api/s5.go
index 7c00f33..6b84878 100644
--- a/api/s5.go
+++ b/api/s5.go
@@ -47,5 +47,8 @@ func getRoutes(h *s5.HttpHandler, portal interfaces.Portal) map[string]jape.Hand
 
 		// Debug API
 		"/s5/debug/download_urls/:cid": s5.AuthMiddleware(h.DebugDownloadUrls, portal),
+
+		//Registry API
+		"GET /s5/registry": s5.AuthMiddleware(h.RegistryQuery, portal),
 	}
 }
diff --git a/api/s5/http.go b/api/s5/http.go
index ad06546..dbfd8fe 100644
--- a/api/s5/http.go
+++ b/api/s5/http.go
@@ -942,6 +942,36 @@ func (h *HttpHandler) DebugDownloadUrls(jc jape.Context) {
 	_, _ = jc.ResponseWriter.Write([]byte(strings.Join(output, "\n")))
 }
 
+func (h *HttpHandler) RegistryQuery(jc jape.Context) {
+	var pk string
+
+	if jc.DecodeForm("pk", &pk) != nil {
+		return
+	}
+
+	pkBytes, err := base64.RawURLEncoding.DecodeString(pk)
+	if jc.Check("error decoding pk", err) != nil {
+		return
+	}
+
+	entry, err := h.getNode().Services().Registry().Get(pkBytes)
+	if jc.Check("error getting registry entry", err) != nil {
+		return
+	}
+
+	if entry == nil {
+		jc.ResponseWriter.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	jc.Encode(&RegistryQueryResponse{
+		Pk:        base64.RawURLEncoding.EncodeToString(entry.PK()),
+		Revision:  entry.Revision(),
+		Data:      base64.RawURLEncoding.EncodeToString(entry.Data()),
+		Signature: base64.RawURLEncoding.EncodeToString(entry.Signature()),
+	})
+}
+
 func (h *HttpHandler) getNode() s5interfaces.Node {
 	proto, _ := h.portal.ProtocolRegistry().Get("s5")
 	protoInstance := proto.(*protocols.S5Protocol)
diff --git a/api/s5/messages.go b/api/s5/messages.go
index cd73130..0a0c393 100644
--- a/api/s5/messages.go
+++ b/api/s5/messages.go
@@ -53,3 +53,9 @@ type AccountStatsTotal struct {
 type AppUploadResponse struct {
 	CID string `json:"cid"`
 }
+type RegistryQueryResponse struct {
+	Pk        string `json:"pk"`
+	Revision  uint64 `json:"revision"`
+	Data      string `json:"data"`
+	Signature string `json:"signature"`
+}