From 497d8b1c201ad62d4dee8e86ad6622da38805163 Mon Sep 17 00:00:00 2001
From: mizzick <ds.kolyshev@gmail.com>
Date: Tue, 24 May 2016 20:51:25 +0530
Subject: [PATCH] #253 file storage

---
 Extension/lib/filter/update-service.js | 93 +++++++++++++-------------
 Extension/lib/utils/browser-utils.js   |  6 +-
 2 files changed, 53 insertions(+), 46 deletions(-)

diff --git a/Extension/lib/filter/update-service.js b/Extension/lib/filter/update-service.js
index 6c26239b15..405fa2d726 100644
--- a/Extension/lib/filter/update-service.js
+++ b/Extension/lib/filter/update-service.js
@@ -84,6 +84,9 @@ exports.ApplicationUpdateService = {
 		if (Utils.isGreaterVersion("2.1.2", runInfo.prevVersion) && Utils.isFirefoxBrowser()) {
 			methods.push(this._onUpdateFirefoxStorage);
 		}
+		if (Utils.isGreaterVersion("2.3.5", runInfo.prevVersion) && Utils.isChromium() && !Utils.isSafariBrowser()) {
+			methods.push(this._onUpdateChromiumStorage);
+		}
 
 		var dfd = this._executeMethods(methods);
 		dfd.then(callback);
@@ -281,6 +284,50 @@ exports.ApplicationUpdateService = {
 		return dfd;
 	},
 
+	/**
+	 * Update chromium file storage by switching to local storage
+	 *
+	 * Version 2.3.5
+	 * @returns {exports.Promise}
+	 * @private
+	 */
+	_onUpdateChromiumStorage: function () {
+		Log.info('Call update to version 2.3.5');
+
+		var dfd = new Promise();
+
+		var adguardFilters = JSON.parse(LS.getItem('adguard-filters')) || Object.create(null);
+
+		for (var filterId in adguardFilters) {
+			if (filterId == AntiBannerFiltersId.WHITE_LIST_FILTER_ID) {
+				continue;
+			}
+
+			var filePath = FilterStorage._getFilePath(filterId);
+			FileStorage.readFromFile(filePath, function (e, rules) {
+				if (e) {
+					Log.error("Error while reading rules from file {0} cause: {1}", filePath, e);
+					continue;
+				}
+
+				var onTransferCompleted = function () {
+					Log.info("Rules have been transferred to local storage for filter {0}", filterId);
+
+					FileStorage.removeFile(filePath, function () {
+						Log.info("File removed for filter {0}", filterId);
+					}, function () {
+						Log.error("File remove error for filter {0}", filterId);
+					});
+				};
+
+				FilterStorage.saveFilterRules(filterId, rules, onTransferCompleted.bind(this));
+			}.bind(this));
+		}
+
+		dfd.resolve();
+		return dfd;
+	},
+
 	/**
 	 * Mark 'adguard-filters' as installed and loaded on extension version update
 	 * @private
@@ -334,7 +381,7 @@ exports.ApplicationUpdateService = {
 
 /**
  * File storage adapter
- * @Deprecated Used now only to upgrade from versions older than v2.3
+ * @Deprecated Used now only to upgrade from versions older than v2.3.5
  */
 var FileStorage = exports.FileStorage = {
 
@@ -372,50 +419,6 @@ var FileStorage = exports.FileStorage = {
 		this._getFile(path, true, successCallback, callback);
 	},
 
-	writeToFile: function (path, data, callback) {
-
-		var successCallback = function (fs, fileEntry) {
-
-			fileEntry.createWriter(function (fileWriter) {
-
-				var writeOperation = function (operation, nextOperation) {
-
-					fileWriter.onwriteend = function () {
-						if (fileWriter.error) {
-							callback(fileWriter.error);
-						} else {
-							nextOperation();
-						}
-					};
-
-					fileWriter.onerror = function (e) {
-						callback(e);
-					};
-
-					operation();
-				};
-
-				var nextOperation = function () {
-					var blob;
-					try {
-						blob = new Blob([data.join(FS.LINE_BREAK)], {type: "text/plain"});
-					} catch (ex) {
-						var builder = new (window.BlobBuilder || window.WebKitBlobBuilder)();
-						builder.append(data.join(FS.LINE_BREAK));
-						blob = builder.getBlob("text/plain");
-					}
-
-					writeOperation(fileWriter.write.bind(fileWriter, blob), callback);
-				};
-
-				writeOperation(fileWriter.truncate.bind(fileWriter, 0), nextOperation);
-
-			}, callback);
-		};
-
-		this._getFile(path, true, successCallback, callback);
-	},
-
 	_getFile: function (path, create, successCallback, errorCallback) {
 
 		path = path.replace(/^.*[\/\\]/, "");
diff --git a/Extension/lib/utils/browser-utils.js b/Extension/lib/utils/browser-utils.js
index f0de8ca0a3..422a45e467 100644
--- a/Extension/lib/utils/browser-utils.js
+++ b/Extension/lib/utils/browser-utils.js
@@ -100,6 +100,10 @@ var Utils = exports.Utils = {
         return Prefs.getBrowser() == "Chrome";
     },
 
+    isChromium: function () {
+        return Prefs.platform == 'chromium';
+    },
+
     isWindowsOs: function () {
         return this.navigator.userAgent.toLowerCase().indexOf("win") >= 0;
     },
@@ -118,7 +122,7 @@ var Utils = exports.Utils = {
     isShadowDomSupported: function() {
         
         // Shadow DOM is supported by all modern chromium browsers
-        return Prefs.platform == 'chromium';
+        return this.isChromium();
     },
     
     /**