function for_login(){
    $('#login_msg').removeClass('success-message').removeClass('fail-message');
    dataString = "action=user__LOGIN_EMAIL&email="+encodeURIComponent($("#login_email").val())+"&login_pw="+encodeURIComponent($("#login_pw").val());
    $.ajax({
        type: "POST",
        url: "/caj/sign_ajax.php",
        data: dataString,
        cache: false,
        success: function(data){
            if (data == "true"){
                $('#login_msg').addClass('success-message').html("Login Success");
                setTimeout(function(){
                    window.location.href = "/";
                }, 1000);
            }else if (data == "true_but_email_not_verified"){
               window.location.href = "/general/email_verification.php";
           }
            
            
            else if (data == "false"){
                $('#login_msg').addClass('fail-message').html("Login Failed.  Please try again.");
            }
        }
    });
}

function basicAPIRequest() {
        FB.api('/me', 
        { fields: "id, name, age_range, gender, locale, picture.width(500).height(500), timezone, email, friends" }, 
        function(response) {        
            dataString = "action=facebook_login_N_registration&facebook_email="+response.email+"&display_name="+response.name+"&gender="+response.gender+"&fb_id="+response.id+"&age_max="+response.age_range.max+"&age_min"+response.age_range.min;
            $.ajax({
                type: "POST",
                url: "/caj/fb_ajax.php",
                data: dataString,
                cache: false,
                success: function(data){
                    window.location.reload();
                }
            });
        }
    );
}


$(document).ready(function(){
         window.fbAsyncInit = function() {
            FB.init({
              appId      : 249933008675785,
              xfbml      : true,
              version    : 'v2.6',
              cookie  : true,
              oauth: true
            });
          };

          (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'));

           $("#login_fb").click(function(e){
            if(typeof(FB) == "undefined") {
                alert("Facebook SDK not yet loaded please wait.");
            }
            FB.getLoginStatus(function(response) {
            if (response.status === 'connected') {
                
                basicAPIRequest();
            }
            else {
                FB.login(function(response) {
                        if (response.authResponse) {
                            basicAPIRequest();
                        } else {
                        
                            window.location.reload();
                        }
                    },
                    {
                        scope: 'email'
                    });
                
            }
        });      
    });


	forgot_pw();
        
        $('#email_login_button').click(function(){
            var email = $('#login_email').val();
            var is_email_check = email.indexOf("@");
            
            if (is_email_check > 0){
                if (loginAttempt() == true){
                    for_login();
                }
                else{
                    return loginAttempt();
                }
            }
            else{
                for_login();
            }
        });
})

$(document).keypress(function(e) {
    if(e.which == 13) {
        loginAttempt();
    }
})

function loginAttempt(){
	$('.pop-message').html('');
	var email = $('#login_email').val();
	var password = $('#login_pw').val();
	
	if(validateEmail(email)){
		/*

		login with php function 

		if success, redirect immediately

		if failed, load below js:

			$('.pop-meesage').addClass('fail-message').html("Login Failed.  Please try again.")
			$('#login-email').val('');
			$('#login-pw').val('');

		*/
               return true;
	}
        else{
		$('#login_msg').addClass('fail-message').html("Please enter correct email.")
		$('#login_email').val('');
		$('#login_pw').val('');
                return false;
	}
}




function validateEmail(email){
	var emailRegex = /^([a-z\d!#$%&'*+\-\/=?^_`{|}~\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+(\.[a-z\d!#$%&'*+\-\/=?^_`{|}~\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+)*|"((([ \t]*\r\n)?[ \t]+)?([\x01-\x08\x0b\x0c\x0e-\x1f\x7f\x21\x23-\x5b\x5d-\x7e\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]|\\[\x01-\x09\x0b\x0c\x0d-\x7f\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))*(([ \t]*\r\n)?[ \t]+)?")@(([a-z\d\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]|[a-z\d\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF][a-z\d\-._~\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]*[a-z\d\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])\.)+([a-z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]|[a-z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF][a-z\d\-._~\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]*[a-z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])\.?$/i;
	var emailValid = emailRegex.test(email);

	if(emailValid){
		return true;
	}else{
		return false;
	}
}

function forgot_pw(){
	$('#forgot_pw').click(function(){
		$('#forgot_pw_modal').fadeIn();
	})

	$('#cancel_pw_button, .modal-close').click(function(){
		$('#email_for_reset').val('');
		$('#forgot_pw_modal').fadeOut();
		$('.pop-message').html('');
	})

	$('#send_pw_button').click(function(){
		$('.pop-message').html('');
		var email = $('#email_for_reset').val();
		console.log('forget');
		if(validateEmail(email)){
                    /*
                    send reset password email with php function 
                    */
                   console.log(true);
                   dataString = "action=user__forgetPW_N_sendEmail&email="+$("#email_for_reset").val();
                   console.log(dataString);
                    $.ajax({
                        type: "POST",
                        url: "/caj/sign_ajax.php",
                        data: dataString,
                        cache: false,
                        success: function(data){
                           if(data){
                                alert('Reset password email is successfully sent.');
                                $('#email_for_reset').val('');
                                $('#forgot_pw_modal').fadeOut();
                            }else{
                                console.log('Something wrong');
                            }
                        }
                    });
                   
                    
		}
                else{
                    $('#forgot_pw_msg').addClass('fail-message').html("Please enter correct email.")
                    $('#email_for_reset').val('');
		}	
	})
}