added switch to previous server feature

Author: yourWaifu

source/3ds_discord.cpp

@@ -24,10 +24,13 @@ void ThreeDSDiscordClient::onServer(SleepyDiscord::Server server) {
 	addServer(server);
 }
 
-void ThreeDSDiscordClient::switchServer() {
+void ThreeDSDiscordClient::switchServer(int displacement) {
 	if (servers.size() == 0) return;
 	//change current server
-	if (servers.size() <= ++currentServerHandle)
+	currentServerHandle += displacement;
+	if (100 < currentServerHandle)
+		currentServerHandle = servers.size() - 1;
+	else if (servers.size() <= currentServerHandle)
 		currentServerHandle = 0;
 	isCurrentChannelHandleValid = false;
 	printf("Switched Server to %s.\n", getCurrentServer().name.c_str());
@@ -69,15 +72,15 @@ void ThreeDSDiscordClient::switchChannel() {
 }
 
 void ThreeDSDiscordClient::loadMessages() {
-	if (servers.size() == 0) return;
+	if (servers.size() == 0 || isCurrentChannelHandleValid == false) return;
 	std::vector<SleepyDiscord::Message> messages = getMessages(getCurrentChannel().id, limit, "", 8);
 	for (std::vector<SleepyDiscord::Message>::reverse_iterator i = messages.rbegin(), end = messages.rend(); i != end; ++i) {
 		addNewMessage(*i);
 	}
 }
 
 void ThreeDSDiscordClient::launchKeyboardAndSentMessage() {
-	if (servers.size() == 0) return;
+	if (servers.size() == 0 || isCurrentChannelHandleValid == false) return;
 	//tell discord that we are typing
 	if (sendTyping(getCurrentChannel().id) == false) //error check
 		return;
@@ -114,8 +117,9 @@ void ThreeDSDiscordClient::launchKeyboardAndSentMessage() {
 
 void ThreeDSDiscordClient::onReady(std::string * jsonMessage) {
 	printf("ready\n");
-	if (!isBot()) {
+	if (isBot() == false && servers.size() == 0) {
 		std::vector<SleepyDiscord::Server> servers = getServers();
+		//you should some error checking here
 		for (SleepyDiscord::Server server : servers) {
 			addServer(server);
 		}

source/3ds_discord.h

@@ -5,7 +5,7 @@ class ThreeDSDiscordClient : public ThreeDSWebsocketClient {
 public:
 	ThreeDSDiscordClient() {}
 	ThreeDSDiscordClient(const std::string token);
-	void switchServer();
+	void switchServer(int displacement);
 	void switchChannel();
 	void loadMessages();
 	void launchKeyboardAndSentMessage();

source/main.cpp

@@ -93,8 +93,10 @@ int main() {
 		u32 keysPressedDown = hidKeysDown();
 		if (keysPressedDown & KEY_START)
 			break;
-		if (keysPressedDown & KEY_DRIGHT)//to do make a better ui
-			client.switchServer();
+		if (keysPressedDown & KEY_DLEFT)//to do make a better ui
+			client.switchServer(-1);
+		if (keysPressedDown & KEY_DRIGHT)
+			client.switchServer(1);
 		if (keysPressedDown & KEY_DDOWN)
 			client.switchChannel();
 		if (keysPressedDown & KEY_Y)