Database abstraction and Timer class implementation

Resources/main_windows/db/db.js

@@ -0,0 +1,52 @@
+Ti.include("../helpers/utils.js");
+
+// Database constructor
+function Db(){	
+	this.db = Titanium.Database.open("timersdb");
+	this.db.execute('CREATE TABLE IF NOT EXISTS timers (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, intial_date DATE, final_date DATE)');
+}
+
+// Basic CRUD operations
+Db.prototype.save = function(timer){
+	var sql = "INSERT INTO timers(name, initial_date, final_date) VALUES('{timer.name}', '{timer.initialDate}', '{timer.finalDate}')".supplant(timer);
+	this.db.execute(sql);
+}
+
+Db.prototype.remove = function(id){
+	var sql = "DELETE FROM timers WHERE id = {id}".supplant({'id': id});
+	this.db.execute(sql);
+}
+
+Db.prototype.update = function(timer){
+	var sql = "UPDATE timers SET name = '{name}', initial_date = '{initialDate}', final_date = '{finalDate}' where id = {id}".supplant(timer);
+	this.db.execute(sql);	
+}
+
+Db.prototype.list = function(){
+	var sql = 'SELECT * FROM timers';
+	var cursor = this.db.execute(sql);
+	var timers = [];
+	while(cursor.isValidRow()){
+		var timer = populateTimerObject(cursor);
+	}
+	cursor.close();
+	return timers;
+}
+
+Db.prototype.get = function(id){
+	var sql = "SELECT * FROM timers WHERE id = {id}".supplant({'id':id});
+	var cursor = this.db.execute(sql);
+	var timer = null;
+	if(cursor.isValidRow()){
+		timer = populateTimerObject(cursor);
+	}
+	cursor.close();
+	return timer;
+}
+
+// Helper function to populate a new Timer object from a database cursor
+function populateTimerObject(cursor){
+	var timer = new Timer(cursor.fieldByName('name'), cursor.fieldByName('initial_date'), cursor.fielByName('final_date'));
+	timer.id = cursor.field(0);
+	return timer;
+}

Resources/main_windows/helpers/utils.js

@@ -0,0 +1,20 @@
+var isDate = function(obj){
+	 return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
+}
+
+Date.prototype.strftime = function(){
+       function _zero(num){return (num < 10 ) ? "0"+num : ""+num };
+       return [this.getFullYear()+"", _zero(this.getMonth()+1), _zero(this.getDate()) ].join('-') + " " + 
+                        [this.getHours(), this.getMinutes(), this.getSeconds()].join(':')
+}
+
+if (!String.prototype.supplant) {
+    String.prototype.supplant = function (o) {
+        return this.replace(/{([^{}]*)}/g,
+            function (a, b) {
+                var r = o[b];
+				return isDate(o[b]) ? o[b].strftime():  r.toString();
+            }
+        );
+    };
+}

Resources/main_windows/model/timer.js

@@ -0,0 +1,20 @@
+// Timer Object
+
+// Constructor
+function Timer(name, initialDate, finalDate){
+	this.name = name;
+	this.initialDate = initialDate;
+	this.finalDate = finalDate;
+	this.id = null;
+}
+
+// Check if a current date falls in the range
+// of initial and final date
+Timer.prototype.isValidDate = function(date){
+	// TODO: Validate that 'date' object is Date
+	return this.initialDate <= date <= this.finalDate
+}
+
+Timer.prototype.toString = function(){
+	return 'Timer['+this.name+'] = <'+this.initialDate+'><'+this.finalDate+'>'
+}

tiapp.xml

@@ -5,14 +5,14 @@
         <target device="ipad">false</target>
         <target device="android">true</target>
     </deployment-targets>
-    <id>com.flockonuskaos12.multitimer</id>
-    <name>MultiTimer</name>
-    <version>1.0</version>
-    <publisher>nos2011</publisher>
-    <url>http://flockonus.github.com</url>
-    <description>not specified</description>
-    <copyright>2011 by nos</copyright>
-    <icon>appicon.png</icon>
+<id>com.flockonuskaos12.multitimer</id>
+<name>MultiTimer</name>
+<version>1.0</version>
+<publisher>nos2011</publisher>
+<url>http://flockonus.github.com</url>
+<description>not specified</description>
+<copyright>2011 by nos</copyright>
+<icon>default_app_logo.png</icon>
     <persistent-wifi>false</persistent-wifi>
     <prerendered-icon>false</prerendered-icon>
     <statusbar-style>default</statusbar-style>