ezequiel9/login-fb.html

## login-fb.html
// Previamente crear y configurar tu app desde facebook developers.
//insertá este código en tu página y agregá tu APP ID y listo!.. Lee los comentarios para mas detalles.
<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>

<script>
  // This is called with the results from from FB.getLoginStatus().
  function statusChangeCallback(response) {
    console.log('statusChangeCallback');
    console.log(response);
    // The response object is returned with a status field that lets the
    // app know the current login status of the person.
    // Full docs on the response object can be found in the documentation
    // for FB.getLoginStatus().
    if (response.status === 'connected') {
      // Logged into your app and Facebook.
      testAPI(); //llamás a la función testAPI que levanta el Correo, ID y NAME del usuario para luego guardarla en la DB
    } else if (response.status === 'not_authorized') {
      // The person is logged into Facebook, but not your app.
      document.getElementById('status').innerHTML = 'Please log ' +
        'into this app.';
    } else {
      // The person is not logged into Facebook, so we're not sure if
      // they are logged into this app or not.
      document.getElementById('status').innerHTML = 'Please log ' +
        'into Facebook.';
    }
  }

  // This function is called when someone finishes with the Login
  // Button.  See the onlogin handler attached to it in the sample
  // code below.
  function checkLoginState() {
    FB.getLoginStatus(function(response) {
      statusChangeCallback(response);
    });
  }

  window.fbAsyncInit = function() {
  FB.init({
    appId      : '{TU-APP-ID}',
    cookie     : true,  // enable cookies to allow the server to access
                        // the session
    xfbml      : true,  // parse social plugins on this page
    version    : 'v2.5' // use graph api version 2.5
  });

  // Now that we've initialized the JavaScript SDK, we call
  // FB.getLoginStatus().  This function gets the state of the
  // person visiting this page and can return one of three states to
  // the callback you provide.  They can be:
  //
  // 1. Logged into your app ('connected')
  // 2. Logged into Facebook, but not your app ('not_authorized')
  // 3. Not logged into Facebook and can't tell if they are logged into
  //    your app or not.
  //
  // These three cases are handled in the callback function.

  FB.getLoginStatus(function(response) {
    statusChangeCallback(response);
  });

  };

  // Load the SDK asynchronously
  (function(d, s, id) {
    var js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return;
    js = d.createElement(s); js.id = id;
    js.src = "//connect.facebook.net/en_US/sdk.js";
    fjs.parentNode.insertBefore(js, fjs);
  }(document, 'script', 'facebook-jssdk'));

  // Here we run a very simple test of the Graph API after login is
  // successful.  See statusChangeCallback() for when this call is made.
  function testAPI() {
    // si se ejecuta esta funcion es porque todo salió correctamente Ya podes guaradar los datos del usuario y cargar la session
    // podrías usar el metodo post para enviar por ajax los datos a un archivo .php que se encargue del resto.
    console.log('Welcome!  Fetching your information.... ');
    FB.api('/me', {fields: 'name, email'}, function(response) {
      if (response && !response.error) {
        /* handle the result */
        console.log(JSON.stringify(response));//muestra en la consola del browser los datos recibidos!
        //acá iría el .post();
        document.getElementById('status').innerHTML = 'Thanks for logging in, ' + response.name + '!';
      }

    });
  }

</script>

<!--
  Below we include the Login Button social plugin. This button uses
  the JavaScript SDK to present a graphical Login button that triggers
  the FB.login() function when clicked.
-->

<fb:login-button scope="public_profile,email" onlogin="checkLoginState();">
</fb:login-button>

<div id="status">
</div>
	// Previamente crear y configurar tu app desde facebook developers.
	//insertá este código en tu página y agregá tu APP ID y listo!.. Lee los comentarios para mas detalles.
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Document</title>
	</head>
	<body>

	<script>
	// This is called with the results from from FB.getLoginStatus().
	function statusChangeCallback(response) {
	console.log('statusChangeCallback');
	console.log(response);
	// The response object is returned with a status field that lets the
	// app know the current login status of the person.
	// Full docs on the response object can be found in the documentation
	// for FB.getLoginStatus().
	if (response.status === 'connected') {
	// Logged into your app and Facebook.
	testAPI(); //llamás a la función testAPI que levanta el Correo, ID y NAME del usuario para luego guardarla en la DB
	} else if (response.status === 'not_authorized') {
	// The person is logged into Facebook, but not your app.
	document.getElementById('status').innerHTML = 'Please log ' +
	'into this app.';
	} else {
	// The person is not logged into Facebook, so we're not sure if
	// they are logged into this app or not.
	document.getElementById('status').innerHTML = 'Please log ' +
	'into Facebook.';
	}
	}

	// This function is called when someone finishes with the Login
	// Button. See the onlogin handler attached to it in the sample
	// code below.
	function checkLoginState() {
	FB.getLoginStatus(function(response) {
	statusChangeCallback(response);
	});
	}

	window.fbAsyncInit = function() {
	FB.init({
	appId : '{TU-APP-ID}',
	cookie : true, // enable cookies to allow the server to access
	// the session
	xfbml : true, // parse social plugins on this page
	version : 'v2.5' // use graph api version 2.5
	});

	// Now that we've initialized the JavaScript SDK, we call
	// FB.getLoginStatus(). This function gets the state of the
	// person visiting this page and can return one of three states to
	// the callback you provide. They can be:
	//
	// 1. Logged into your app ('connected')
	// 2. Logged into Facebook, but not your app ('not_authorized')
	// 3. Not logged into Facebook and can't tell if they are logged into
	// your app or not.
	//
	// These three cases are handled in the callback function.

	FB.getLoginStatus(function(response) {
	statusChangeCallback(response);
	});

	};

	// Load the SDK asynchronously
	(function(d, s, id) {
	var js, fjs = d.getElementsByTagName(s)[0];
	if (d.getElementById(id)) return;
	js = d.createElement(s); js.id = id;
	js.src = "//connect.facebook.net/en_US/sdk.js";
	fjs.parentNode.insertBefore(js, fjs);
	}(document, 'script', 'facebook-jssdk'));

	// Here we run a very simple test of the Graph API after login is
	// successful. See statusChangeCallback() for when this call is made.
	function testAPI() {
	// si se ejecuta esta funcion es porque todo salió correctamente Ya podes guaradar los datos del usuario y cargar la session
	// podrías usar el metodo post para enviar por ajax los datos a un archivo .php que se encargue del resto.
	console.log('Welcome! Fetching your information.... ');
	FB.api('/me', {fields: 'name, email'}, function(response) {
	if (response && !response.error) {
	/* handle the result */
	console.log(JSON.stringify(response));//muestra en la consola del browser los datos recibidos!
	//acá iría el .post();
	document.getElementById('status').innerHTML = 'Thanks for logging in, ' + response.name + '!';
	}

	});
	}

	</script>

	<!--
	Below we include the Login Button social plugin. This button uses
	the JavaScript SDK to present a graphical Login button that triggers
	the FB.login() function when clicked.
	-->

	<fb:login-button scope="public_profile,email" onlogin="checkLoginState();">
	</fb:login-button>

	<div id="status">
	</div>