options.php

<?php
if ( ! defined( 'ABSPATH' ) ) exit;

require( 'lytePartners.php');

$plugin_dir = basename( dirname( __FILE__ ) ) . '/languages';
load_plugin_textdomain( 'wp-youtube-lyte', false, $plugin_dir );

add_action('admin_menu', 'lyte_create_menu');

if ( get_option( 'lyte_emptycache','0') === '1') {
    $emptycache = lyte_rm_cache();
    update_option( 'lyte_emptycache','0' );
    if ( $emptycache === 'OK' ) {
        add_action( 'admin_notices', 'lyte_cacheclear_ok_notice' );
    } elseif ( $emptycache === 'PART') {
        add_action( 'admin_notices', 'lyte_cacheclear_part_notice' );
        update_option( 'lyte_emptycache', '1' ); // to ensure cache-purging continues
    } else {
        add_action( 'admin_notices', 'lyte_cacheclear_fail_notice' );
    }
}

function lyte_cacheclear_ok_notice() {
    echo '<div class="updated"><p>';
    _e( 'Your WP YouTube Lyte cache has been succesfully cleared.', 'wp-youtube-lyte' );
    echo '</p></div>';
}

function lyte_cacheclear_part_notice() {
    echo '<div class="error"><p>';
    _e( 'WP YouTube Lyte cache was partially cleared, refresh this page to continue purging.', 'wp-youtube-lyte' );
    echo '</p></div>';
}

function lyte_cacheclear_fail_notice() {
    echo '<div class="error"><p>';
    _e( 'There was a problem, the WP YouTube Lyte cache could not be cleared.', 'wp-youtube-lyte' );
    echo '</p></div>';
}

function lyte_create_menu() {
        $hook=add_options_page( 'WP YouTube Lyte settings', 'WP YouTube Lyte', 'manage_options', 'lyte_settings_page', 'lyte_settings_page');
        add_action( 'admin_init', 'register_lyte_settings' );
        add_action( 'admin_print_scripts-' . $hook, 'lyte_admin_scripts' );
        add_action( 'admin_print_styles-' . $hook, 'lyte_admin_styles' );
}

function register_lyte_settings() {
    register_setting( 'lyte-settings-group', 'lyte_show_links' );
    register_setting( 'lyte-settings-group', 'lyte_size' );
    register_setting( 'lyte-settings-group', 'lyte_hidef' );
    register_setting( 'lyte-settings-group', 'lyte_position' );
    register_setting( 'lyte-settings-group', 'lyte_microdata' );
    register_setting( 'lyte-settings-group', 'lyte_emptycache' );
    register_setting( 'lyte-settings-group', 'lyte_greedy' );
    register_setting( 'lyte-settings-group', 'lyte_yt_api_key' );
    register_setting( 'lyte-settings-group', 'lyte_local_thumb' );
    register_setting( 'lyte-settings-group', 'lyte_disclaimer' );
}

function lyte_admin_scripts() {
    wp_enqueue_script('jqcookie', plugins_url( '/external/jquery.cookie.min.js', __FILE__) , array( 'jquery' ), null, true );
    wp_enqueue_script('unslider', plugins_url( '/external/unslider-min.js', __FILE__ ), array( 'jquery' ), null, true );
}

function lyte_admin_styles() {
    wp_enqueue_style( 'unslider', plugins_url( '/external/unslider.css', __FILE__ ) );
    wp_enqueue_style( 'unslider-dots', plugins_url( '/external/unslider-dots.css', __FILE__ ) );
}

function lyte_admin_nag_apikey() {
    echo '<div class="update-nag">';
    _e( 'For WP YouTube Lyte to function optimally, you should enter an YouTube API key ', 'wp-youtube-lyte' );
    echo ' <a href="options-general.php?page=lyte_settings_page">';
    _e( 'in the settings screen.', 'wp-youtube-lyte' );
    echo '</a>.</div>';
}

$lyte_yt_api_key = get_option( 'lyte_yt_api_key', '' );
$lyte_yt_api_key = apply_filters( 'lyte_filter_yt_api_key', $lyte_yt_api_key );
if ( empty( $lyte_yt_api_key ) ) {
    add_action( 'admin_notices', 'lyte_admin_nag_apikey' );
}

function lyte_admin_api_error(){
    $yt_error = json_decode( get_option( 'lyte_api_error' ), 1 );
    echo '<div class="error"><p>';
    _e( 'WP YouTube Lyte got the following error back from the YouTube API: ', 'wp-youtube-lyte' );
    echo '<strong>' . $yt_error['reason'] . '</strong>';
    echo ' (' . date('r', $yt_error['timestamp'] ) . ').';
    echo '</a>.</p></div>';
    update_option( 'lyte_api_error', '' );
}

if ( get_option( 'lyte_api_error', '' ) !== '' ) {
    add_action( 'admin_notices', 'lyte_admin_api_error' );
}

function lyte_settings_page() {
    global $pSize, $pSizeOrder;
?>
<style>
/* rss block */
#futtta_feed ul{list-style:outside;}
#futtta_feed {font-size:medium; margin:0px 20px;} 

/* banner + unslider */
.lyte_banner {
    margin: 0 38px;
    padding-bottom: 5px;
}
.lyte_banner ul li {
    font-size:medium;
    text-align:center;
}
.unslider {
    position:relative;
}
.unslider-arrow {
    display: block;
    left: unset;
    margin-top: -35px;
    margin-left: 7px;
    margin-right: 7px;
    border-radius: 32px;
    background: rgba(0, 0, 0, 0.10) no-repeat 50% 50%;
    color: rgba(255, 255, 255, 0.8);
    font: normal 20px/1 dashicons;
    speak: none;
    padding: 3px 2px 3px 4px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.unslider-arrow:hover {
    background-color: rgba(0, 0, 0, 0.20);
    color: #FFF;
}
.unslider-arrow.prev {
    padding: 3px 4px 3px 2px;
}
.unslider-arrow.next {
    right: 0px;
}
.unslider-arrow.prev::before {
    content: "\f341";
}
.unslider-arrow.next::before {
    content: "\f345";
}
/* responsive stuff: hide admin-feed on smaller screens */
@media (min-width: 961px) {
    #lyte_main {float:left;width:69%;}
    #lyte_admin_feed{float:right;width:30%;display:block !important;}
    }
@media (max-width: 960px) {
    #lyte_main {width:100%;}
    #lyte_admin_feed {width:0%;display:none !important;}
}
@media (max-width: 782px) {
    #lyte_hide_adv span, #lyte_show_adv span {display: none;}
    #lyte_hide_adv,#lyte_show_adv {height: 34px;padding: 4px 12px 8px 8px;}
    #lyte_hide_adv:before,#lyte_show_adv:before {font-size: 25px;}
    #lyte_main input[type="checkbox"] {margin-left: 10px;}
    #lyte_main .cb_label {display: block; padding-left: 45px; text-indent: -45px;}
}
</style>
<div class="wrap">
<h2><?php _e( 'WP YouTube Lyte Settings', 'wp-youtube-lyte' ); ?></h2>
<div style="float:left;width:70%;">
<?php echo lyte_admin_tabs(); ?>
<form method="post" action="options.php">
    <?php settings_fields( 'lyte-settings-group' ); ?>
    <table class="form-table">
        <tr valign="top">
            <th scope="row"><?php _e( 'Your YouTube API key.', 'wp-youtube-lyte' ); ?></th>
            <td>
            <?php // only show api key input field if there's no result from filter
            $filter_key = apply_filters( 'lyte_filter_yt_api_key', '' );
            if ( empty( $filter_key ) ) { ?>
                <fieldset>
                    <legend class="screen-reader-text"><span><?php _e( 'Please enter your YouTube API key.', 'wp-youtube-lyte' ); ?></span></legend>
                    <label title="<?php _e( 'API key', 'wp-youtube-lyte' ); ?>"><input type="text" size="28" name="lyte_yt_api_key" id="lyte_yt_api_key" value="<?php echo esc_attr( wp_strip_all_tags( get_option( 'lyte_yt_api_key', '' ) ) ); ?>"><span id="check_api_key" class="submit button-secondary" style="margin:0px 5px;"><?php _e( 'Test Key' ); ?></span></label><br />
                    <div id="lyte_key_check_output" style="display:none;margin-bottom:5px;background-color:white;border-left:solid;border-width:4px;border-color:#2ea2cc;padding:5px 5px 5px 15px;"></div>
                    <?php _e( "WP YouTube Lyte uses YouTube's API to fetch information on each video. For your site to use that API, you will have to <a href=\"https://console.developers.google.com/project/\" target=\"_blank\">register your site as a new application</a>, enable the YouTube API for it and get a server key and fill it out here.", 'wp-youtube-lyte' ); ?>
                </fieldset>
            <?php } else { ?>
                <?php _e( 'Great, your YouTube API key has been taken care of!', 'wp-youtube-lyte' ); ?>
            <?php } ?>
            </td>
        </tr>
        <tr valign="top">
            <th scope="row"><?php _e( 'Player size', 'wp-youtube-lyte' ); ?>:</th>
            <td>
                <fieldset><legend class="screen-reader-text"><span><?php _e( 'Player size', 'wp-youtube-lyte' ); ?></span></legend>
                <?php
                    $sel = ! is_bool( get_option( 'lyte_size' ) ) ? (int) get_option( 'lyte_size' ) : 0;
                    foreach ( array ( '169', '43' ) as $f ) {
                        foreach ( $pSizeOrder[$f] as $i ) {
                            $pS = $pSize[$i];
                            if ( $pS['a'] === true ) {
                                ?>
                                <label title="<?php echo $pS['w'] . 'X' . $pS['h']; ?>"><input type="radio" name="lyte_size" class="l_size" value="<?php echo $i . '"'; if ( $i===$sel ) echo ' checked'; echo ' /> ' . $pS['w'] . 'X' . $pS['h'] . ' (' . $pS['t'] ;?>)</label><br />
                                <?php
                            }
                        }
                        ?><br /><?php
                    }
                ?>
                </fieldset>
             </td>
         </tr>
        <tr valign="top">
            <th scope="row"><?php _e( 'Add links below the embedded videos?', 'wp-youtube-lyte' ); ?></th>
            <td>
                <fieldset>
                    <legend class="screen-reader-text"><span><?php _e( 'Show links?', 'wp-youtube-lyte' ) ?></span></legend>
                    <label title="<?php _e( 'Show YouTube-link', 'wp-youtube-lyte' );?>"><input type="radio" name="lyte_show_links" value="1" <?php if ( get_option( 'lyte_show_links') === '1' || get_option( 'lyte_show_links') === '2' ) echo 'checked' ?> /><?php _e( ' Add YouTube-link.', 'wp-youtube-lyte') ?></label><br />
                    <label title="<?php _e( 'Don\'t include links.', 'wp-youtube-lyte' );?>"><input type="radio" name="lyte_show_links" value="0" <?php if ( ( get_option( 'lyte_show_links' ) !== '1' ) && ( get_option( 'lyte_show_links')!=="2")) echo 'checked' ?> /><?php _e( ' Don\'t add any links.', 'wp-youtube-lyte' ); ?></label>
                </fieldset>
            </td>
         </tr>
         <tr valign="top">
                <th scope="row"><?php _e( 'Player position:', 'wp-youtube-lyte' ); ?></th>
                <td>
                        <fieldset>
                                <legend class="screen-reader-text"><span><?php _e( 'Left, center or right?', 'wp-youtube-lyte' ); ?></span></legend>
                                <label title="<?php _e( 'Left', 'wp-youtube-lyte' );?>"><input type="radio" name="lyte_position" value="0" <?php if ( get_option( 'lyte_position', '0' ) === '0') echo 'checked' ?> /><?php _e( 'Left', 'wp-youtube-lyte' ); ?></label><br />
                                <label title="<?php _e( 'Center', 'wp-youtube-lyte' );?>"><input type="radio" name="lyte_position" value="1" <?php if ( get_option( 'lyte_position', '0' ) === '1') echo 'checked' ?> /><?php _e( 'Center', 'wp-youtube-lyte' ); ?></label>
                        </fieldset>
                </td>
         </tr>
         <tr valign="top">
                <th scope="row"><?php _e( 'Try to force HD?', 'wp-youtube-lyte' ); ?></th>
                <td>
                        <fieldset>
                                <legend class="screen-reader-text"><span><?php _e( 'HD or not?', 'wp-youtube-lyte' ); ?></span></legend>
                                <label title="<?php _e( 'Enable HD?', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_hidef" value="1" <?php if ( get_option( 'lyte_hidef','0') === '1') echo 'checked' ?> /><?php _e( 'Enable HD', 'wp-youtube-lyte' ); ?></label><br />
                                <label title="<?php _e( 'Don\'t enable HD playback', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_hidef" value="0" <?php if ( get_option( 'lyte_hidef','0') !== '1' ) echo 'checked' ?> /><?php _e( 'No HD (default)', 'wp-youtube-lyte' ); ?></label>
                        </fieldset>
                </td>
        </tr>
         <tr valign="top">
                <th scope="row"><?php _e( 'Add microdata?', 'wp-youtube-lyte' ); ?></th>
                <td>
                        <fieldset>
                                <legend class="screen-reader-text"><span><?php _e( 'Add video microdata to the HTML?', 'wp-youtube-lyte' ); ?></span></legend>
                                <label title="<?php _e( 'Sure, add microdata!', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_microdata" value="1" <?php if ( get_option( 'lyte_microdata', '1' ) === '1') echo 'checked' ?> /><?php _e( 'Yes (default)', 'wp-youtube-lyte' ); ?></label><br />
                                <label title="<?php _e( 'No microdata in my HTML please.', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_microdata" value="0" <?php if ( get_option( 'lyte_microdata', '1' ) !== '1' ) echo 'checked' ?> /><?php _e( 'No microdata, thanks.', 'wp-youtube-lyte' ); ?></label>
                        </fieldset>
                </td>
        </tr>
        <tr valign="top">
                <th scope="row"><?php _e( 'Also act on normal YouTube links and iframes?', 'wp-youtube-lyte' ); ?></th>
                <td>
                        <fieldset>
                                <legend class="screen-reader-text"><span><?php _e( 'Also act on normal YouTube links?', 'wp-youtube-lyte' ); ?></span></legend>
                                <label title="<?php _e( 'That would be great!', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_greedy" value="1" <?php if ( get_option( 'lyte_greedy', '1' ) === '1') echo 'checked' ?> /><?php _e( 'Yes (default)', 'wp-youtube-lyte' ); ?></label><br />
                                <label title="<?php _e( 'No, I\'ll stick to httpv or shortcodes.', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_greedy" value="0" <?php if ( get_option( 'lyte_greedy', '1' ) !== '1' ) echo 'checked' ?> /><?php _e( 'No thanks.', 'wp-youtube-lyte' ); ?></label>
                        </fieldset>
                </td>
        </tr>
        <tr valign="top">
            <th scope="row"><?php _e( 'Cache thumbnails locally?', 'wp-youtube-lyte' ); ?></th>
            <td>
                    <fieldset>
                            <legend class="screen-reader-text"><span><?php _e( 'Cache thumbnails locally?', 'wp-youtube-lyte' ); ?></span></legend>
                            <label title="<?php _e( 'That would be great!', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_local_thumb" value="1" <?php if ( get_option( 'lyte_local_thumb','0') === '1') echo 'checked' ?> /><?php _e( 'Yes.', 'wp-youtube-lyte' ); ?></label><br />
                            <label title="<?php _e( 'No, keep on using YouTube hosted thumbnails.', 'wp-youtube-lyte' ); ?>"><input type="radio" name="lyte_local_thumb" value="0" <?php if ( get_option( 'lyte_local_thumb','0') !== '1' ) echo 'checked' ?> /><?php _e( 'No (default).', 'wp-youtube-lyte' ); ?></label>
                            <br />
                            <?php _e( 'Having the thumbnails cached locally can improve performance and will enhance visitor privacy as by default no requests will be sent to YouTube unless the video is played.', 'wp-youtube-lyte' ); ?>
                    </fieldset>
            </td>
        </tr>
        <tr valign="top">
            <th scope="row"><?php _e( 'Text to be added under every LYTE video.', 'wp-youtube-lyte' ); ?></th>
            <td>
                <fieldset>
                    <legend class="screen-reader-text"><span><?php _e( 'Text (e.g. for disclaimer) to be added under every LYTE video.', 'wp-youtube-lyte' ); ?></span></legend>
                    <input type="text" style="width:100%;" name="lyte_disclaimer" placeholder="" value="<?php echo esc_textarea( get_option( 'lyte_disclaimer', '' ) ); ?>" /><br />
                    <br />
                    <?php _e( 'If you want to add e.g. a privacy disclaimer under every LYTE embedded video, you can do so here. Some HTML is allowed. Simply leave empty not to show anything.', 'wp-youtube-lyte' ); ?>
                </fieldset>
            </td>
        </tr>
        <tr valign="top">
                <th scope="row"><?php _e( 'Empty WP YouTube Lyte\'s cache', 'wp-youtube-lyte' ); ?></th>
                <td>
                        <fieldset>
                                <legend class="screen-reader-text"><span>Remove WP YouTube Lyte's cache</span></legend>
                                <input type="checkbox" name="lyte_emptycache" value="1" />
                        </fieldset>
                </td>
        </tr>
    </table>
    
    <p class="submit">
    <input type="submit" class="button-primary" value="<?php _e( 'Save Changes' ) ?>" />
    </p>

</form>
</div>
<div id="lyte_admin_feed" class="">
    <div class="lyte_banner ">
        <ul>
        <?php
        if ( apply_filters('wp-youtube-lyte_settingsscreen_remotehttp', true ) ) {
            $lyte_banner = get_transient( 'wp-youtube-lyte_banner' );
            if ( empty( $lyte_banner ) ) {
                $banner_resp = wp_remote_get('https://misc.optimizingmatters.com/wp-youtube-lyte_news.html');
                if ( ! is_wp_error( $banner_resp ) ) {
                    if ( wp_remote_retrieve_response_code( $banner_resp ) == '200' ) {
                        $lyte_banner = wp_kses_post( wp_remote_retrieve_body( $banner_resp ) );
                        set_transient( 'wp-youtube-lyte_banner', $lyte_banner, DAY_IN_SECONDS );
                    }
                }
            }
            echo $lyte_banner;
        }
        ?>
        <li><?php _e( 'Need help? <a href="https://wordpress.org/plugins/wp-youtube-lyte/faq/">Check out the FAQ here</a>.', 'wp-youtube-lyte' ); ?></li>
        <li><?php _e( 'Happy with wp-youtube-lyte?', 'wp-youtube-lyte' ); ?><br /><a href="<?php echo network_admin_url(); ?>plugin-install.php?tab=search&type=author&s=optimizingmatters"><?php _e( 'Try my other plugins!', 'wp-youtube-lyte' ); ?></a></li>
        </ul>
    </div>
    <div style="margin-left:10px;margin-top:-5px;">
        <h2>
            <?php _e( 'futtta about', 'wp-youtube-lyte' ); ?>
            <select id="feed_dropdown" >
                <option value="1"><?php _e( 'WP YouTube Lyte', 'wp-youtube-lyte' ); ?></option>
                <option value="2"><?php _e( 'WordPress', 'wp-youtube-lyte' ); ?></option>
                <option value="3"><?php _e( 'Web Technology', 'wp-youtube-lyte' ); ?></option>
            </select>
        </h2>
        <div id="futtta_feed">
            <div id="wp-youtube-lytefeed">
                <?php getFutttaFeeds( 'https://feeds.feedburner.com/futtta_wp-youtube-lyte' ); ?>
            </div>
            <div id="wordpressfeed">
                <?php getFutttaFeeds( 'https://feeds.feedburner.com/futtta_wordpress' ); ?>
            </div>
            <div id="webtechfeed">
                <?php getFutttaFeeds( 'https://feeds.feedburner.com/futtta_webtech'); ?>
            </div>
        </div>
    </div>
    <div style="float:right;margin:50px 15px;"><a href="http://blog.futtta.be/2013/10/21/do-not-donate-to-me/" target="_blank"><img width="100px" height="85px" src="<?php echo plugins_url( '/external/do_not_donate_smallest.png', __FILE__ ) ?>" title="<?php _e( 'Do not donate for this plugin!', 'wp-youtube-lyte' ); ?>"></a></div>
</div>

<script>
    var feed = new Array;
    feed[1]="wp-youtube-lytefeed";
    feed[2]="wordpressfeed";
    feed[3]="webtechfeed";
    cookiename="wp-youtube-lyte_feed";

    jQuery(document).ready(function() {
        jQuery( "#check_api_key" ).click(function() {
                jQuery("#lyte_key_check_output").show();
                jQuery("#lyte_key_check_output").append("<p><?php _e( 'Checking your key ...'); ?></p>");
                lyte_yt_api_key=jQuery("input#lyte_yt_api_key").val();            
                if ((lyte_yt_api_key.length>9) &&(lyte_yt_api_key.length<99)) {
                        var data = {
                                'action': 'lyte_check_yt_api_key',
                                'lyte_nonce': '<?php echo wp_create_nonce( "lyte_check_api_key" );?>',
                                'lyte_yt_api_key': jQuery("input#lyte_yt_api_key").val()
                        };
                        jQuery.post(ajaxurl, data, function(response) {
                                jQuery("#lyte_key_check_output").append('<p>'+response+'</p>');
                        });
                } else {
                        jQuery("#lyte_key_check_output").append('<p><?php _e( "That does not seem to be a correct API key!"); ?></p>');
                }        
        })
        jQuery('#lyte_admin_feed').fadeTo("slow",1).show();
        jQuery('.lyte_banner').unslider({autoplay:true, delay:3500, infinite: false, arrows:{prev:'<a class="unslider-arrow prev"></a>', next:'<a class="unslider-arrow next"></a>'}}).fadeTo("slow",1).show();

        jQuery( "#feed_dropdown" ).change(function() {
            jQuery("#futtta_feed").fadeTo(0,0);
            jQuery("#futtta_feed").fadeTo("slow",1);
        });

        jQuery("#feed_dropdown").change(function() { show_feed(jQuery("#feed_dropdown").val()) });
        feedid=jQuery.cookie(cookiename);
        if(typeof(feedid) !== "string") feedid=1;
        show_feed(feedid);
    })

    function show_feed(id) {
        jQuery('#futtta_feed').children().hide();
        jQuery('#'+feed[id]).show();
        jQuery("#feed_dropdown").val(id);
        jQuery.cookie(cookiename,id,{ expires: 365 });
    }
</script>
</div>

<?php }

// ajax receiver for YT API key check
add_action( 'wp_ajax_lyte_check_yt_api_key', 'lyte_check_yt_api_key_callback' );
function lyte_check_yt_api_key_callback() {
    check_ajax_referer( 'lyte_check_api_key', 'lyte_nonce' );
    $api_key = ( esc_html( $_POST['lyte_yt_api_key'] ) === $_POST['lyte_yt_api_key'] ) ? $_POST['lyte_yt_api_key'] : '' ;

    // use random video to make sure a cache is not spoiling things
    $vidToCheck   = array('ZmnZHudtzXg', '2_7oQcAkyl8', 'nOvv80wkSgI', 'pBCt5nfsZ30', 'KHw7gdJ14uQ', 'qJ_PMvjmC6M', 'DVwHCGAr_OE', 'LtOGa5M8AuU', 'VHO9uZX9FNU' );
    $randVidIndex = array_rand( $vidToCheck );
    
    if ( ! empty( $api_key ) ) {
        $api_response = lyte_get_YT_resp( $vidToCheck[$randVidIndex], false, '', $api_key );
    } else {
        $api_response = 'API key format error.';
    }

    if ( is_array( $api_response ) ) {
        if ( ! empty( $api_response['title'] ) ) {
            _e( 'API seems OK, you can Save Changes below now.', 'wp-youtube-lyte' );
        } else if ( ! empty($api_response['reason'] ) ) {
            $all_but_one = __( 'API key not OK, your key seems to ', 'wp-youtube-lyte' );
            switch ( $api_response['reason'] ) {
                case 'keyInvalid':
                    echo $all_but_one;
                    _e( 'be invalid.', 'wp-youtube-lyte' );
                    break;
                case 'ipRefererBlocked':
                    echo $all_but_one;
                    _e( 'be valid, but restricted to an IP-address which is not your server\'s.', 'wp-youtube-lyte' );
                    _e( 'Try changing the allowed IP for your API key to include this one: ', 'wp-youtube-lyte' );
                    echo $_SERVER["SERVER_ADDR"];
                    break;
                case 'keyExpired':
                    echo $all_but_one;
                    _e( 'have expired, please check in the Google Developer Console.', 'wp-youtube-lyte' );
                    break;
                case 'limitExceeded':
                case 'quotaExceeded':
                case 'rateLimitExceeded':
                case 'userRateLimitExceeded':
                    echo $all_but_one;
                    _e( 'be correct, but seems to have exceeded the number of requests that can be made with it.', 'wp-youtube-lyte' );
                    break;
                case 'videoNotFound':
                    echo $all_but_one;
                    _e( 'probably work, but as the video with id ', 'wp-youtube-lyte' );
                    echo $vidToCheck[$randVidIndex];
                    _e( ' was not found we cannot be sure, please try again.', 'wp-youtube-lyte' );
                    break;
                default:
                    _e( 'Your API key might be OK, but the API call did not succeed or the response was not entirely expected. Technical error: ', 'wp-youtube-lyte' );
                    echo $api_response['reason'];
                }
        }
    } else {
        _e( 'Something went wrong, WP YouTube Lyte might not have been able to retrieve information from the YouTube API, got error: ', 'wp-youtube-lyte' );
        print_r( $api_response );
    }
    wp_die();
}

function getFutttaFeeds($url) {
if ( apply_filters( 'lyte_settingsscreen_remotehttp', true ) ) {
    $rss = fetch_feed( $url );
    $maxitems = 0;

    if ( ! is_wp_error( $rss ) ) {
        $maxitems  = $rss->get_item_quantity( 7 ); 
        $rss_items = $rss->get_items( 0, $maxitems );
    }
    ?>
    <ul>
        <?php if ( $maxitems == 0 ) : ?>
            <li><?php _e( 'No items', 'wp-youtube-lyte' ); ?></li>
        <?php else : ?>
            <?php foreach ( $rss_items as $item ) : ?>
                <li>
                    <a href="<?php echo esc_url( $item->get_permalink() ); ?>"
                        title="<?php printf( __( 'Posted %s', 'wp-youtube-lyte' ), $item->get_date('j F Y | g:i a') ); ?>">
                        <?php echo esc_html( $item->get_title() ); ?>
                    </a>
                </li>
            <?php endforeach; ?>
        <?php endif; ?>
    </ul>
    <?php
}
}

// based on http://wordpress.stackexchange.com/a/58826
function lyte_admin_tabs(){
        $tabs = apply_filters( 'wp-youtube-lyte_filter_settingsscreen_tabs', array( 'lyte_settings_page' => __('Main', 'wp-youtube-lyte' ) ) );
        $tabContent = '';
        if ( count( $tabs ) >= 1 ) {
            if( isset( $_GET['page'] ) ) {
                $currentId = sanitize_text_field( $_GET['page'] );
            } else {
                $currentId = 'wp-youtube-lyte';
            }
            $tabContent .= '<h2 class="nav-tab-wrapper">';
            foreach( $tabs as $tabId => $tabName ){
                if( $currentId == $tabId ) {
                    $class = ' nav-tab-active';
                } else{
                    $class = '';
                }
                $tabContent .= '<a class="nav-tab'.$class.'" href="?page='.$tabId.'">' . $tabName . '</a>';
            }
            $tabContent .= '</h2>';
        } else {
            $tabContent = '<hr/>';
        }

        return $tabContent;
}
?>