From e9904604ce0199d696c4941dff4f5ad84d22355f Mon Sep 17 00:00:00 2001
From: LaG1924 <12997935+LaG1924@users.noreply.github.com>
Date: Mon, 6 Aug 2018 20:04:50 +0500
Subject: Implemented Settings Manager

---
 src/Render.cpp   | 25 ++++++++++++++++--------
 src/Render.hpp   |  3 +++
 src/Settings.cpp | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/Settings.hpp | 13 +++++++++++++
 4 files changed, 91 insertions(+), 8 deletions(-)
 create mode 100644 src/Settings.cpp
 create mode 100644 src/Settings.hpp

diff --git a/src/Render.cpp b/src/Render.cpp
index c44d2b4..d5a4b6a 100644
--- a/src/Render.cpp
+++ b/src/Render.cpp
@@ -12,12 +12,15 @@
 #include "World.hpp"
 #include "GameState.hpp"
 #include "RendererWorld.hpp"
+#include "Settings.hpp"
 
 Render::Render(unsigned int windowWidth, unsigned int windowHeight,
                std::string windowTitle)
         : timer(std::chrono::milliseconds(16)) {
     InitEvents();
 
+	Settings::Load();
+
     InitSdl(windowWidth, windowHeight, windowTitle);
     glCheckError();
     InitGlew();
@@ -27,10 +30,19 @@ Render::Render(unsigned int windowWidth, unsigned int windowHeight,
     PrepareToRendering();
     glCheckError();
 
+	strcpy(fieldUsername, Settings::Read("username", "HelloOne").c_str());
+	strcpy(fieldServerAddr, Settings::Read("serverAddr", "127.0.0.1").c_str());
+	fieldServerPort = std::stoi(Settings::Read("serverPort", "25565"));
+
     LOG(INFO) << "Supported threads: " << std::thread::hardware_concurrency();
 }
 
 Render::~Render() {
+	Settings::Write("username", fieldUsername);
+	Settings::Write("serverAddr", fieldServerAddr);
+	Settings::Write("serverPort", std::to_string(fieldServerPort));
+	Settings::Save();
+
     ImGui_ImplSdlGL3_Shutdown();
     SDL_GL_DeleteContext(glContext);
     SDL_DestroyWindow(window);
@@ -383,16 +395,13 @@ void Render::RenderGui() {
         case State::MainMenu: {
             ImGui::SetNextWindowPosCenter();
             ImGui::Begin("Menu", 0, windowFlags);
-            static char buff[512] = "127.0.0.1";
-            static int port = 25565;
-            static char buffName[512] = "HelloOne";
             if (ImGui::Button("Connect")) {
-                PUSH_EVENT("ConnectToServer", std::make_tuple(std::string(buff),
-                           (unsigned short) port, std::string(buffName)));
+                PUSH_EVENT("ConnectToServer", std::make_tuple(std::string(fieldServerAddr),
+                           (unsigned short) fieldServerPort, std::string(fieldUsername)));				
             }
-            ImGui::InputText("Username", buffName, 512);
-            ImGui::InputText("Address", buff, 512);
-            ImGui::InputInt("Port", &port);
+            ImGui::InputText("Username", fieldUsername, 512);
+            ImGui::InputText("Address", fieldServerAddr, 512);
+            ImGui::InputInt("Port", &fieldServerPort);
             ImGui::Separator();
             if (ImGui::Button("Exit"))
                 PUSH_EVENT("Exit",0);
diff --git a/src/Render.hpp b/src/Render.hpp
index 3367100..f4523a1 100644
--- a/src/Render.hpp
+++ b/src/Render.hpp
@@ -32,6 +32,9 @@ class Render {
     std::vector<std::string> chatMessages;
 	EventListener listener;
     std::string stateString;
+	char fieldUsername[512];
+	char fieldServerAddr[512];
+	int fieldServerPort;
 
 	void SetMouseCapture(bool IsCaptured);
 
diff --git a/src/Settings.cpp b/src/Settings.cpp
new file mode 100644
index 0000000..a585752
--- /dev/null
+++ b/src/Settings.cpp
@@ -0,0 +1,58 @@
+#include "Settings.hpp"
+
+#include <fstream>
+#include <map>
+
+#include <nlohmann/json.hpp>
+#include <easylogging++.h>
+
+
+using json = nlohmann::json;
+
+std::map<std::string, std::string> values;
+
+const std::string saveFileName = "./settings.json";
+
+void Settings::Load() {
+	std::ifstream stream(saveFileName);
+	if (!stream) {
+		LOG(ERROR) << "Loading settings failed: Can't open ifstream for " << saveFileName << ": " << strerror(errno);
+		return;
+	}
+	json j;
+	stream >> j;
+
+	for (json::iterator it = j.begin(); it != j.end(); ++it) {
+		values.insert(std::make_pair(it.key(), it->get<std::string>()));
+	}
+	LOG(INFO) << "Loaded " << values.size() << " settings";
+}
+
+void Settings::Save() {
+	json j;
+	for (auto &it : values) {
+		j[it.first] = it.second;
+	}
+	std::string text = j.dump(4);
+
+	std::ofstream stream(saveFileName);
+	if (!stream) {
+		LOG(ERROR) << "Saving settings failed: Can't open ofstream for " << saveFileName << ": "<< strerror(errno);
+		return;
+	}
+	stream << text;
+	LOG(INFO) << "Saved " << values.size() << " settings";
+}
+
+std::string Settings::Read(const std::string &key, const std::string &defaultValue) {
+	auto it = values.find(key);
+	if (it == values.end()) {
+		values.insert(std::make_pair(key, defaultValue));
+		it = values.find(key);
+	}
+	return it->second;
+}
+
+void Settings::Write(const std::string &key, const std::string &value) {
+	values[key] = value;
+}
diff --git a/src/Settings.hpp b/src/Settings.hpp
new file mode 100644
index 0000000..194e736
--- /dev/null
+++ b/src/Settings.hpp
@@ -0,0 +1,13 @@
+#pragma once
+
+#include <string>
+
+namespace Settings {
+	void Load();
+
+	void Save();
+
+	std::string Read(const std::string &key, const std::string &defaultValue);
+
+	void Write(const std::string &key, const std::string &value);
+}
\ No newline at end of file
-- 
cgit v1.2.3