<?php
namespace Tz\WordPress\Tools\Analytics;

use Tz;
use Tz\WordPress\Tools;

const VERSION        = 1;
const OPTION_NAME    = 'tz_analytics';
const OPTION_GROUP   = 'reading';
const OPTION_SECTION = 'tz_analytics_main';

call_user_func(
    function () {
        Vars::$options = new Tools\WP_Option(OPTION_NAME);

        Tools\add_actions(__NAMESPACE__.'\Actions');
    }
);

function validate($data)
{
    return $data;
}

class Actions
{
    public static function admin_init()
    {
        register_setting(OPTION_GROUP, OPTION_NAME, __NAMESPACE__.'\validate');
        add_settings_section(
            OPTION_SECTION,
            'Google Analytics',
            function () {
            },
            OPTION_GROUP
        );

        Tools\add_settings_fields(__NAMESPACE__.'\Fields', OPTION_GROUP, OPTION_SECTION);
    }

    public static function wp_print_scripts()
    {
        if (Tz\LIVE !== 1 || empty(Vars::$options['api_key'])) {
            return;
        }
        ?>
        <script>
            (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
            (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
            m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
            })(window,document,'script','//www.google-analytics.com/analytics.js','ga');

            ga('create', 'UA-16903554-2', 'cicbv.ca');
            ga('send', 'pageview');
        </script>
    <?php
    }
}

class Fields
{
    public static function api_key()
    {
        echo '<input type="text" name="'.OPTION_NAME.'['.__FUNCTION__.']" id="'.__FUNCTION__.'" value="'.Vars::$options[__FUNCTION__].'" />';
    }
}

class Vars
{
    public static $options;
}