sort emails by sent date when fetching them from the data-store

src/js/dao/email-dao.js

@@ -62,6 +62,9 @@ app.dao.EmailDAO = function(_, crypto, devicestorage, cloudstorage) {
 				// parse to backbone model collection
 				collection = new app.model.EmailCollection(decryptedList);				
 
+				// reverse order so that mails with the most recent dat will be displayed first
+				collection.models.reverse();
+
 				// cache collection in folder memory
 				if (decryptedList.length > 0) {
 					folder = new app.model.Folder({name: folderName});

src/js/dao/lawnchair-dao.js

@@ -60,32 +60,43 @@ app.dao.LawnchairDAO = function(window) {
 					}
 				}				
 				
-				// if num is null, list all items
-				num = (num !== null) ? num : matchingKeys.length;
-				
-				// set window of items to fetch
-				if (offset + num < matchingKeys.length) {
-					matchingKeys = matchingKeys.splice(matchingKeys.length - offset - num, num);
-				} else if (offset + num >= matchingKeys.length && offset < matchingKeys.length) {
-					matchingKeys = matchingKeys.splice(0, matchingKeys.length - offset);
-				} else {
-					matchingKeys = [];
-				}
-				
 				// return if there are no matching keys
 				if (matchingKeys.length === 0) {
 					callback(list);
 					return;
 				}
 				
-				// get matching objects from data-store
+				// fetch all items from data-store with matching key
 				self.get(matchingKeys, function(matchingList) {
 					for (i = 0; i < matchingList.length; i++) {
 						list.push(matchingList[i].object);
 					}
 					
+					// sort items by date
+					if (list[0].sentDate) {						
+						list = _.sortBy(list, function(item) {
+							var parts = item.sentDate.match(/(\d+)/g);
+							var date = new Date(parts[0], parts[1] - 1, parts[2], parts[3], parts[4], parts[5]);
+							return date.getTime();
+						});
+					}			
+					
+					// if num is null, list all items
+					num = (num !== null) ? num : list.length;
+
+					// set window of items to fetch
+					if (offset + num < list.length) {
+						list = list.splice(list.length - offset - num, num);
+					} else if (offset + num >= list.length && offset < list.length) {
+						list = list.splice(0, list.length - offset);
+					} else {
+						list = [];
+					}					
+					
+					// return only the interval between offset and num
 					callback(list);
 				});			
+					
 			});
 		});
 	};

src/js/view/messagelist-view.js

@@ -53,10 +53,11 @@ app.view.MessageListView = Backbone.View.extend({
 			listItemArgs;
 		
 		$.mobile.loading('show', { text: 'decrypting...', textVisible: true });
-		this.dao.listItems(this.folder, 0, 20, function(collection) {			
+		this.dao.listItems(this.folder, 0, 10, function(collection) {			
 			// clear list
 			list.html('');
 			
+			// append items to list
 			_.each(collection.models, function(email) {
 				listItemArgs = {account: self.options.account, folder: self.folder, model: email};
 				list.append(new app.view.MessageListItemView(listItemArgs).render().el);

test/test-data.js

@@ -13,7 +13,7 @@ var TestData = function() {
 				from:'john@from.com',
 				to:['jack@to.com'],
 				subject: 'Important stuff ' + i,
-				sentDate: '15:00',
+				sentDate: (1900 + i) + '-03-13 18:17:53',
 				body: bigAssString
 			});
 			

test/unit/email-dao-test.js

@@ -20,7 +20,7 @@ asyncTest("Init", 2, function() {
 	emaildao_test.emailDao = new app.dao.EmailDAO(_, emaildao_test.crypto, emaildao_test.storage, cloudstorageStub);
 	
 	// generate test data
-	emaildao_test.list = new TestData().getEmailCollection(10);
+	emaildao_test.list = new TestData().getEmailCollection(100);
 	
 	var account = new app.model.Account({
 		emailAddress: emaildao_test.user,
@@ -44,6 +44,11 @@ asyncTest("Persist test emails", 2, function() {
 	emaildao_test.crypto.aesEncryptListForUser(emaildao_test.list.toJSON(), function(encryptedList) {
 		equal(encryptedList.length, emaildao_test.list.length, 'Encrypt list');
 		
+		// add sent date to encrypted items
+		for (var i = 0; i < encryptedList.length; i++) {
+			encryptedList[i].sentDate = emaildao_test.list.at(i).get('sentDate');
+		}
+		
 		emaildao_test.storage.storeEcryptedList(encryptedList, 'email_inbox', function() {
 			ok(true, 'Store encrypted list');
 
@@ -55,9 +60,9 @@ asyncTest("Persist test emails", 2, function() {
 asyncTest("List Email models", 1, function() {
 	emaildao_test.emailDao.listItems('inbox', 0, emaildao_test.list.length, function(collection) {
 		var gotten = collection.toJSON(),
-			reference = emaildao_test.list.toJSON();
+			reference = emaildao_test.list.toJSON().reverse();
 			
-		deepEqual(gotten, reference, 'Collection length');
+		deepEqual(gotten, reference, 'Compare collection');
 		
 		start();
 	});