From ca456a7241fb4b46f9c76c86eeecc273ca31d8f6 Mon Sep 17 00:00:00 2001
From: Alexander Tkachev
Date: Sat, 21 May 2016 14:06:50 +0600
Subject: CLOUD: Add object-oriented Callbacks

These callbacks can call object's methods, not some global C functions.

DropboxStorage::info2() and DropboxStorage::infoMethodCallback()
demonstrate the idea.
---
 backends/cloud/dropbox/dropboxstorage.cpp | 41 +++++++++++++++++++++++++++++--
 backends/cloud/dropbox/dropboxstorage.h   |  4 +++
 2 files changed, 43 insertions(+), 2 deletions(-)

(limited to 'backends/cloud/dropbox')

diff --git a/backends/cloud/dropbox/dropboxstorage.cpp b/backends/cloud/dropbox/dropboxstorage.cpp
index f2270f79cd..94bdb43450 100644
--- a/backends/cloud/dropbox/dropboxstorage.cpp
+++ b/backends/cloud/dropbox/dropboxstorage.cpp
@@ -92,6 +92,30 @@ void infoCallback(Networking::Request* request, void *jsonPointer) {
 	}
 }
 
+void info2Callback(Networking::Request* request, void *jsonPointer) {
+	if (!request) {
+		warning("infoCallback: got NULL instead of Request");
+
+		Common::JSONValue *json = (Common::JSONValue *)jsonPointer;
+		if (json) delete json; //yeah I know we can delete NULL safely
+		return;
+	}
+
+	Common::BaseCallback *callback = (Common::BaseCallback *)request->pointer();
+
+	Common::JSONValue *json = (Common::JSONValue *)jsonPointer;
+	if (json) {
+		//Common::JSONObject result = json->asObject();
+		if (callback) {
+			(*callback)(new StorageInfo(json->stringify()));
+			delete callback;
+		}
+		delete json;
+	} else {
+		warning("infoCallback: got NULL instead of JSON!");
+	}
+}
+
 DropboxStorage::DropboxStorage(Common::String accessToken, Common::String userId): _token(accessToken), _uid(userId) {
 	curl_global_init(CURL_GLOBAL_ALL);
 }
@@ -104,9 +128,14 @@ void syncSavesInfoCallback(StorageInfo info) {
 	debug("info: %s", info.info().c_str());
 }
 
+void DropboxStorage::infoMethodCallback(void *storageInfo) {
+	StorageInfo *info = (StorageInfo *)storageInfo;
+	debug("info: %s", info->info().c_str());
+}
+
 void DropboxStorage::syncSaves(OperationCallback callback) {
-	//this is not the real syncSaves() implementation
-	info(syncSavesInfoCallback);
+	//this is not the real syncSaves() implementation	
+	info2(new Common::Callback<DropboxStorage>(this, &DropboxStorage::infoMethodCallback));
 }
 
 void DropboxStorage::info(InfoCallback callback) {	
@@ -117,6 +146,14 @@ void DropboxStorage::info(InfoCallback callback) {
 	request->setPointer(callback);
 }
 
+void DropboxStorage::info2(Common::Callback<DropboxStorage> *callback) {
+	Networking::CurlJsonRequest *request = new Networking::CurlJsonRequest(info2Callback, "https://api.dropboxapi.com/1/account/info");
+	request->addHeader("Authorization: Bearer " + _token);
+	ConnMan.addRequest(request);
+
+	request->setPointer(callback);
+}
+
 DropboxStorage *DropboxStorage::loadFromConfig() {
 	KEY = ConfMan.get("DROPBOX_KEY", "cloud");
 	SECRET = ConfMan.get("DROPBOX_SECRET", "cloud");
diff --git a/backends/cloud/dropbox/dropboxstorage.h b/backends/cloud/dropbox/dropboxstorage.h
index d60dec29de..1cf657bc36 100644
--- a/backends/cloud/dropbox/dropboxstorage.h
+++ b/backends/cloud/dropbox/dropboxstorage.h
@@ -25,6 +25,7 @@
 
 #include "backends/cloud/storage.h"
 #include "backends/cloud/manager.h"
+#include "common/callback.h"
 
 namespace Cloud {
 namespace Dropbox {
@@ -39,6 +40,8 @@ class DropboxStorage: public Cloud::Storage {
 
 	static void getAccessToken(Common::String code);
 
+	void infoMethodCallback(void *serviceInfoPtr);
+
 public:	
 	virtual ~DropboxStorage();
 
@@ -65,6 +68,7 @@ public:
 
 	/** Returns pointer to the ServiceInfo struct. */
 	virtual void info(InfoCallback callback);
+	void info2(Common::Callback<DropboxStorage> *callback);
 
 	/** Returns whether saves sync process is running. */
 	virtual bool isSyncing() { return false; } //TODO
-- 
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