From 05ecd0105d4e723517bc269c9b42bc650743ee89 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Wed, 20 Jan 2021 20:51:10 +0100
Subject: Changing local state via service context

---
 include/erebos/service.h |  4 ++++
 src/network.cpp          | 24 +++++++++++++++---------
 src/service.cpp          | 10 ++++++++++
 src/service.h            |  1 +
 4 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/include/erebos/service.h b/include/erebos/service.h
index 2d6fbce..fa7f105 100644
--- a/include/erebos/service.h
+++ b/include/erebos/service.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <erebos/state.h>
 #include <erebos/uuid.h>
 
 #include <memory>
@@ -22,6 +23,9 @@ public:
 		const class Ref & ref() const;
 		const class Peer & peer() const;
 
+		const Stored<LocalState> & local() const;
+		void local(const LocalState &);
+
 	private:
 		std::unique_ptr<Priv> p;
 	};
diff --git a/src/network.cpp b/src/network.cpp
index eab0f67..c0bcc2a 100644
--- a/src/network.cpp
+++ b/src/network.cpp
@@ -550,16 +550,22 @@ void Server::Peer::updateService(ReplyBuilder & reply)
 	for (auto & x : serviceQueue) {
 		if (auto ref = std::get<1>(x)->check(reply)) {
 			if (lpeer) {
-				Service::Context ctx(new Service::Context::Priv {
-					.ref = *ref,
-					.peer = erebos::Peer(lpeer),
-				});
-
-				for (auto & svc : server.services)
-					if (svc->uuid() == std::get<UUID>(x)) {
-						svc->handle(ctx);
-						break;
+				server.localHead.update([&] (const Stored<LocalState> & local) {
+					Service::Context ctx(new Service::Context::Priv {
+						.ref = *ref,
+						.peer = erebos::Peer(lpeer),
+						.local = local,
+					});
+
+					for (auto & svc : server.services) {
+						if (svc->uuid() == std::get<UUID>(x)) {
+							svc->handle(ctx);
+							break;
+						}
 					}
+
+					return ctx.local();
+				});
 			}
 		} else {
 			next.push_back(std::move(x));
diff --git a/src/service.cpp b/src/service.cpp
index f8217c8..c731990 100644
--- a/src/service.cpp
+++ b/src/service.cpp
@@ -23,3 +23,13 @@ const Peer & Service::Context::peer() const
 {
 	return p->peer;
 }
+
+const Stored<LocalState> & Service::Context::local() const
+{
+	return p->local;
+}
+
+void Service::Context::local(const LocalState & ls)
+{
+	p->local = p->local.ref().storage().store(ls);
+}
diff --git a/src/service.h b/src/service.h
index 9980471..5296bb3 100644
--- a/src/service.h
+++ b/src/service.h
@@ -9,6 +9,7 @@ struct Service::Context::Priv
 {
 	Ref ref;
 	Peer peer;
+	Stored<LocalState> local;
 };
 
 }
-- 
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