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<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009" 
    xmlns:s="library://ns.adobe.com/flex/spark" title="HomeView"
    xmlns:twitter="com.soenkerohde.twitter.*"
    xmlns:mx="library://ns.adobe.com/flex/halo"
    currentState="initial" actionBarVisible="false"
    creationComplete="creationCompleteHandler(event)" xmlns:twitter1="com.dipanwita.twitter.*">
  
  <fx:Script>
    <![CDATA[
      import com.dipanwita.twitter.event.TwitterOAuthEvent;
      import com.dipanwita.twitter.event.TwitterUserEvent;
      import com.dipanwita.twitter.event.TwitterStatusEvent;
      
      import flash.events.MouseEvent;
      import flash.net.SharedObject;
      
      import mx.events.FlexEvent;
      import mx.managers.CursorManager;
      
      import org.iotashan.oauth.OAuthToken;
      
      private var accessToken:OAuthToken;
      [Bindable]
      private var pinPending:Boolean = false;
      [Bindable]
      private var statusPending:Boolean = false;
      [Bindable]
      private var screenName:String;
      protected function creationCompleteHandler( event : FlexEvent ) : void {
        authenticate();
      }
      private function authenticate() : void {
        var so:SharedObject = SharedObject.getLocal("twitter");
        var token:Object = so.data["accessToken"];
        // user has already an AccessToken
        if ( token != null ) {
          CursorManager.setBusyCursor();
          accessToken = new OAuthToken( token.key, token.secret );
          verifyAccessToken( accessToken );
          // user is not authenticated yet
        } else {
          currentState = "unauthenticated";
          twitter.authenticate(); 
        }
      }
      protected function verifyAccessToken( token : OAuthToken ) : void {
        twitter.addEventListener( TwitterUserEvent.USER_INFO, userInfoHandler );
        twitter.addEventListener( TwitterUserEvent.USER_ERROR, userErrorHandler );
        twitter.verifyAccessToken(token);
      }
      private function userInfoHandler( event : TwitterUserEvent ) : void {
        currentState = "authenticated";
        CursorManager.removeBusyCursor();
        screenName = event.screenName;
        twitter.removeEventListener( TwitterUserEvent.USER_INFO, userInfoHandler );
        twitter.removeEventListener( TwitterUserEvent.USER_ERROR, userErrorHandler );
      }
      private function userErrorHandler( event : TwitterUserEvent ) : void {
        currentState = "unauthenticated";
        CursorManager.removeBusyCursor();
        twitter.removeEventListener( TwitterUserEvent.USER_INFO, userInfoHandler );
        twitter.removeEventListener( TwitterUserEvent.USER_ERROR, userErrorHandler );
      }
      protected function pinClickHandler( event : MouseEvent ) : void {
        pinPending = true;
        CursorManager.setBusyCursor();
        twitter.addEventListener( TwitterOAuthEvent.ACCESS_TOKEN, accessTokenHandler );
        twitter.obtainAccessToken( int( pin.text ) );
      }
      private function accessTokenHandler( event : TwitterOAuthEvent ) : void {
        var so:SharedObject = SharedObject.getLocal( "twitter" );
        so.data["accessToken"] = event.token;
        so.flush();
        currentState = "authenticated";
        pinPending = false;
        CursorManager.removeBusyCursor();
        twitter.removeEventListener( TwitterOAuthEvent.ACCESS_TOKEN, accessTokenHandler );
        verifyAccessToken( event.token );
      }
      protected function statusClickHandler( event : MouseEvent ) : void {
        statusPending = true;
        CursorManager.setBusyCursor();
        twitter.addEventListener( TwitterStatusEvent.STATUS_SEND, statusSendHandler );
        twitter.setStatus( accessToken, statusMessage.text );
      }
      private function statusSendHandler( event : TwitterStatusEvent ) : void {
        //Alert.show( "Your message was successfully sent.", "Status Updated" );
        statusPending = false;
        statusMessage.text = "";
        CursorManager.removeBusyCursor();
        twitter.removeEventListener( TwitterStatusEvent.STATUS_SEND, statusSendHandler );
      }
      protected function logoutClickHandler( event : MouseEvent ) : void {
        var so:SharedObject = SharedObject.getLocal( "twitter" );
        so.data["accessToken"] = null;
        so.flush();
        currentState = "unauthenticated";
        authenticate();
      }
      
    ]]>
    
  </fx:Script>
  
  <fx:Declarations>
    <!-- Place non-visual elements (e.g., services, value objects) here -->
    <s:TraceTarget />
    <twitter1:Twitter  id="twitter"
             consumerKey="consumer key"
             consumerSecret="My secret key"/>
  </fx:Declarations>
  
  
  <s:states>
    <s:State name="initial" />
    <s:State name="unauthenticated" />
    <s:State name="authenticated" />
  </s:states>
  
  <s:Label text="Loading"
       verticalCenter="0"
       horizontalCenter="0"
       includeIn="initial" />
  
  <s:Group includeIn="unauthenticated"
       horizontalCenter="0"
       verticalCenter="0">
    <s:layout>
      <s:HorizontalLayout verticalAlign="middle" />
    </s:layout>
    <s:Label text="PIN" />
    <s:TextInput id="pin"
           enabled="{!pinPending}"
           restrict="0-9" />
    <s:Button label="Validate PIN"
          enabled="{!pinPending &amp;&amp; pin.text != ''}"
          click="pinClickHandler(event)" />
  </s:Group>
  
  <s:Group includeIn="authenticated"
       horizontalCenter="0"
       verticalCenter="0">
    <s:layout>
      <s:VerticalLayout />
    </s:layout>
    <s:Label text="Hello {screenName}" />
    <s:Label text="Set Status"
         enabled="{!statusPending}" />
    <s:TextArea id="statusMessage" />
    <s:Button label="Send"
          enabled="{!statusPending &amp;&amp; statusMessage.text != ''}"
          click="statusClickHandler(event)" />
    <s:Button label="Logout"
          click="logoutClickHandler(event)" />
  </s:Group>
  
  
  
</s:View>