<?php
/**
 * Plugin Name: e-iT Accessibility Tools
 * Description: Free visitor display preferences and a local public-page inventory.
 * Version: 0.3.10
 * Author: e-iT Web Solutions
 * Requires at least: 6.0
 * Requires PHP: 7.4
 * License: GPLv2 or later
 * Text Domain: eit-accessibility-tools
 */

if (!defined('ABSPATH')) {
    exit;
}

final class EITACTO_Tools {
    const VERSION = '0.3.10';
    const OPTION = 'eitacto_tools_options';
    const INVENTORY_LIMIT = 5000;

    private static function t($el, $en) {
        $locale = is_admin() ? get_user_locale() : get_locale();
        return strpos(strtolower($locale), 'el') === 0 ? $el : $en;
    }

    public function __construct() {
        add_action('admin_menu', array($this, 'menu'));
        add_action('admin_init', array($this, 'register_settings'));
        add_action('wp_enqueue_scripts', array($this, 'assets'));
        add_action('wp_footer', array($this, 'render_widget'));
    }

    private function options() {
        return wp_parse_args(get_option(self::OPTION, array()), array(
            'widget_enabled' => 1,
            'position' => 'bottom-right',
            'credit_enabled' => 0,
        ));
    }

    public function menu() {
        add_options_page('e-iT Accessibility Tools', 'e-iT Accessibility', 'manage_options', 'eitacto-tools', array($this, 'settings_page'));
    }

    public function register_settings() {
        register_setting('eitacto_tools', self::OPTION, array(
            'type' => 'array',
            'sanitize_callback' => array($this, 'sanitize'),
        ));
    }

    public function sanitize($input) {
        if (!current_user_can('manage_options')) {
            return $this->options();
        }
        $input = is_array($input) ? $input : array();
        $position = isset($input['position']) ? sanitize_key($input['position']) : 'bottom-right';
        return array(
            'widget_enabled' => !empty($input['widget_enabled']) ? 1 : 0,
            'position' => in_array($position, array('bottom-right', 'bottom-left', 'top-right', 'top-left'), true) ? $position : 'bottom-right',
            'credit_enabled' => !empty($input['credit_enabled']) ? 1 : 0,
        );
    }

    public function same_site_public_url($url) {
        if (!is_string($url) || !$url) {
            return false;
        }
        $parts = wp_parse_url($url);
        $home = wp_parse_url(home_url('/'));
        if (!is_array($parts) || !is_array($home) || !isset($parts['scheme'], $parts['host'], $home['scheme'], $home['host'])) {
            return false;
        }
        if (!in_array(strtolower($parts['scheme']), array('http', 'https'), true) || isset($parts['user']) || isset($parts['pass'])) {
            return false;
        }
        return strtolower($parts['scheme']) === strtolower($home['scheme'])
            && strtolower($parts['host']) === strtolower($home['host'])
            && (isset($parts['port']) ? (int) $parts['port'] : 0) === (isset($home['port']) ? (int) $home['port'] : 0);
    }

    public function public_urls() {
        $urls = array(home_url('/'));
        $truncated = false;
        $page_for_posts = (int) get_option('page_for_posts');
        if ($page_for_posts) {
            $urls[] = get_permalink($page_for_posts);
        }
        foreach (get_post_types(array('public' => true), 'objects') as $type) {
            if ($type->name === 'attachment') {
                continue;
            }
            if ($type->has_archive) {
                $archive = get_post_type_archive_link($type->name);
                if ($archive) {
                    $urls[] = $archive;
                }
            }
            $remaining = self::INVENTORY_LIMIT - count($urls);
            if ($remaining < 1) {
                $truncated = true;
                break;
            }
            $query = new WP_Query(array(
                'post_type' => $type->name,
                'post_status' => 'publish',
                'has_password' => false,
                'posts_per_page' => $remaining + 1,
                'fields' => 'ids',
                'no_found_rows' => true,
                'ignore_sticky_posts' => true,
                'update_post_meta_cache' => false,
                'update_post_term_cache' => false,
            ));
            if (count($query->posts) > $remaining) {
                $truncated = true;
            }
            foreach (array_slice($query->posts, 0, $remaining) as $post_id) {
                $permalink = get_permalink($post_id);
                if ($permalink) {
                    $urls[] = $permalink;
                }
            }
        }
        foreach (get_taxonomies(array('public' => true), 'names') as $taxonomy) {
            $remaining = self::INVENTORY_LIMIT - count($urls);
            if ($remaining < 1) {
                $truncated = true;
                break;
            }
            $terms = get_terms(array('taxonomy' => $taxonomy, 'hide_empty' => true, 'fields' => 'ids', 'number' => $remaining + 1));
            if (is_wp_error($terms)) {
                continue;
            }
            if (count($terms) > $remaining) {
                $truncated = true;
            }
            foreach (array_slice($terms, 0, $remaining) as $term_id) {
                $term_url = get_term_link((int) $term_id, $taxonomy);
                if (!is_wp_error($term_url)) {
                    $urls[] = $term_url;
                }
            }
        }
        $urls = array_filter(array_unique($urls), array($this, 'same_site_public_url'));
        sort($urls, SORT_STRING);
        return array('urls' => $urls, 'truncated' => $truncated);
    }

    public function settings_page($include_services = true) {
        if (!current_user_can('manage_options')) {
            return;
        }
        $options = $this->options();
        $inventory = $include_services ? $this->public_urls() : array('urls' => array(), 'truncated' => false);
        $urls = $inventory['urls'];
        ?>
        <div class="wrap">
            <?php if ($include_services) : ?><h1>e-iT Accessibility Tools</h1><?php endif; ?>
            <p><?php echo esc_html(self::t('Το δωρεάν πρόσθετο παρέχει στους επισκέπτες επιλογές εμφάνισης. Αυτές δεν διορθώνουν αυτόματα το περιεχόμενο και δεν πιστοποιούν συμμόρφωση WCAG.', 'The free plugin provides visitor display preferences. These do not automatically repair content or certify WCAG conformance.')); ?></p>
            <form method="post" action="options.php">
                <?php settings_fields('eitacto_tools'); ?>
                <table class="form-table" role="presentation">
                    <tr><th scope="row"><?php echo esc_html(self::t('Πάνελ προσβασιμότητας', 'Accessibility panel')); ?></th><td><label><input type="checkbox" name="<?php echo esc_attr(self::OPTION); ?>[widget_enabled]" value="1" <?php checked($options['widget_enabled'], 1); ?>> <?php echo esc_html(self::t('Εμφάνιση στους επισκέπτες', 'Show to visitors')); ?></label></td></tr>
                    <tr><th scope="row"><label for="eit-a11y-position"><?php echo esc_html(self::t('Θέση κουμπιού', 'Button position')); ?></label></th><td>
                        <select id="eit-a11y-position" name="<?php echo esc_attr(self::OPTION); ?>[position]">
                            <option value="bottom-right" <?php selected($options['position'], 'bottom-right'); ?>><?php echo esc_html(self::t('Κάτω δεξιά', 'Bottom right')); ?></option>
                            <option value="bottom-left" <?php selected($options['position'], 'bottom-left'); ?>><?php echo esc_html(self::t('Κάτω αριστερά', 'Bottom left')); ?></option>
                            <option value="top-right" <?php selected($options['position'], 'top-right'); ?>><?php echo esc_html(self::t('Πάνω δεξιά', 'Top right')); ?></option>
                            <option value="top-left" <?php selected($options['position'], 'top-left'); ?>><?php echo esc_html(self::t('Πάνω αριστερά', 'Top left')); ?></option>
                        </select>
                    </td></tr>
                    <tr><th scope="row"><?php echo esc_html(self::t('Προαιρετική αναφορά δημιουργού', 'Optional author credit')); ?></th><td><label><input type="checkbox" name="<?php echo esc_attr(self::OPTION); ?>[credit_enabled]" value="1" <?php checked($options['credit_enabled'], 1); ?>> <?php echo esc_html(self::t('Εμφάνιση «Powered by e-iT» στο πάνελ', 'Show “Powered by e-iT” in the panel')); ?></label><p class="description"><?php echo esc_html(self::t('Αρχικά ανενεργή. Το πάνελ λειτουργεί κανονικά χωρίς αυτήν.', 'Off by default. The panel works normally without it.')); ?></p></td></tr>
                </table>
                <?php submit_button(self::t('Αποθήκευση αλλαγών', 'Save changes')); ?>
            </form>
            <?php if ($include_services) : ?>
            <h2><?php echo esc_html(self::t('Καταμέτρηση δημόσιων σελίδων', 'Public page count')); ?></h2>
            <p><strong><?php echo esc_html(count($urls)); ?><?php echo $inventory['truncated'] ? '+' : ''; ?></strong> <?php echo esc_html(self::t('δημόσιες διευθύνσεις εντοπίστηκαν από το WordPress. Περιλαμβάνονται δημοσιευμένες σελίδες/άρθρα, δημόσια αρχεία και μη κενές κατηγορίες. Δεν περιλαμβάνονται ιδιωτικές σελίδες, καταστάσεις φίλτρων και εξωτερικές υπηρεσίες. Η τελική λίστα ελέγχου επιβεβαιώνεται πριν από οποιαδήποτε πληρωμή.', 'public URLs were found in WordPress, including published pages/posts, public archives and nonempty categories. Private pages, filter states and external services are excluded. Confirm the final audit scope before payment.')); ?></p>
            <?php if ($inventory['truncated']) : ?><p><strong><?php echo esc_html(self::t('Η καταμέτρηση σταμάτησε στο ασφαλές όριο των', 'The inventory stopped at the safe limit of')); ?> <?php echo esc_html(self::INVENTORY_LIMIT); ?> <?php echo esc_html(self::t('εγγραφών. Ο αριθμός δεν αποτελεί τελική προσφορά.', 'entries. This count is not a final quote.')); ?></strong></p><?php endif; ?>
            <details><summary><?php echo esc_html(self::t('Προβολή διευθύνσεων', 'View URLs')); ?></summary><ol>
            <?php foreach ($urls as $url) : ?><li><a href="<?php echo esc_url($url); ?>" target="_blank" rel="noopener noreferrer"><?php echo esc_html($url); ?></a></li><?php endforeach; ?>
            </ol></details>
            <h2><?php echo esc_html(self::t('Προαιρετικές υπηρεσίες', 'Optional services')); ?></h2>
            <p><?php echo esc_html(self::t('Ο έλεγχος με οδηγίες χειροκίνητης διόρθωσης και η αυτόματη αποκατάσταση, όπου αυτή είναι εφικτή, είναι χωριστές υπηρεσίες με εφάπαξ χρέωση. Το εργαλείο ελέγχου, η ακριβής τιμή, οι σελίδες και τα δεδομένα που θα διαβιβαστούν εμφανίζονται πριν από κάθε αγορά. Η εγκατάσταση του δωρεάν πρόσθετου δεν ξεκινά έλεγχο, δεν αποστέλλει διευθύνσεις σε τρίτους και δεν συνεπάγεται χρέωση.', 'An audit with manual repair guidance and optional automatic remediation are separate one-time services. The checker, exact price, pages and data recipients are disclosed before purchase. Installing the free plugin does not start an audit, send URLs to third parties or incur charges.')); ?></p>
            <p><strong><?php echo esc_html(self::t('Ο έλεγχος και η προαιρετική αυτόματη αποκατάσταση αγοράζονται μέσα από τον οδηγό e-iT Accessibility, αφού δείτε την προσφορά.', 'Buy an audit or optional automatic remediation in the e-iT Accessibility wizard after reviewing your quote.')); ?></strong></p>
            <?php if ($include_services) { do_action('eitacto_admin_services', $inventory); } ?>
            <?php endif; ?>
        </div>
        <?php
    }

    public function assets() {
        $options = $this->options();
        if (!$options['widget_enabled']) {
            return;
        }
        $base = plugin_dir_url(__FILE__);
        wp_enqueue_style('eitacto-tools', $base . 'assets/accessibility.css', array(), self::VERSION);
        wp_enqueue_script('eitacto-tools', $base . 'assets/accessibility.js', array(), self::VERSION, true);
        do_action('eitacto_panel_assets');
    }

    public function render_widget() {
        $options = $this->options();
        if (!$options['widget_enabled']) {
            return;
        }
        $icon = plugin_dir_url(__FILE__) . 'assets/accessibility-icon.svg';
        ?>
        <div class="eit-a11y-widget eit-position-<?php echo esc_attr($options['position']); ?>" data-eit-a11y-widget>
            <button class="eit-a11y-trigger" type="button" aria-expanded="false" aria-controls="eit-a11y-panel" aria-label="Accessibility settings"><img src="<?php echo esc_url($icon); ?>" alt="" width="42" height="42"></button>
            <section class="eit-a11y-panel" id="eit-a11y-panel" role="dialog" aria-modal="false" aria-labelledby="eit-a11y-title" hidden>
                <header class="eit-a11y-header"><span class="eit-a11y-mark" aria-hidden="true"><img src="<?php echo esc_url($icon); ?>" alt="" width="28" height="28"></span><h2 id="eit-a11y-title" data-i18n="title">Accessibility Settings</h2><button type="button" class="eit-a11y-close" data-action="close" aria-label="Close">×</button></header>
                <div class="eit-a11y-content"><h3 data-i18n="modules">Display Options</h3><div class="eit-a11y-grid">
                    <?php do_action('eitacto_panel_controls'); ?>
                    <div class="eit-a11y-card eit-a11y-size"><span data-i18n="fontSize">Adjust Font Size</span><div><button type="button" data-action="font-down" aria-label="Decrease text size">−</button><span data-font-value>100%</span><button type="button" data-action="font-up" aria-label="Increase text size">+</button></div></div>
                    <div class="eit-a11y-card eit-a11y-size"><span data-i18n="lineHeight">Adjust Line Height</span><div><button type="button" data-action="line-down" aria-label="Decrease line spacing">−</button><span data-line-value>Default</span><button type="button" data-action="line-up" aria-label="Increase line spacing">+</button></div></div>
                <?php foreach (array('contrast' => array('◐', 'contrast'), 'magnifier' => array('⌕', 'magnifier'), 'cognitive' => array('◉', 'cognitive'), 'readable' => array('A', 'readable'), 'dyslexic' => array('D', 'dyslexic'), 'links' => array('↗', 'links'), 'align-left' => array('≡', 'alignLeft'), 'align-center' => array('≡', 'alignCenter'), 'align-right' => array('≡', 'alignRight'), 'motion' => array('Ⅱ', 'motion')) as $action => $parts) : ?>
                        <button type="button" class="eit-a11y-card" data-action="<?php echo esc_attr($action); ?>" aria-pressed="false"><span class="eit-card-icon" aria-hidden="true"><?php echo esc_html($parts[0]); ?></span><span data-i18n="<?php echo esc_attr($parts[1]); ?>"><?php echo esc_html($parts[1]); ?></span></button>
                    <?php endforeach; ?>
                    <button type="button" class="eit-a11y-card" data-action="reset"><span class="eit-card-icon" aria-hidden="true">↺</span><span data-i18n="reset">Reset Settings</span></button>
                </div></div>
                <?php if ($options['credit_enabled']) : ?><footer class="eit-a11y-footer"><span>Powered by</span><a class="eit-a11y-credit-link" href="https://it-e.gr/" target="_blank" rel="noopener noreferrer" aria-label="e-iT Web Solutions (opens in a new tab)"><img src="<?php echo esc_url(plugin_dir_url(__FILE__) . 'assets/e-it-web-solutions.png'); ?>" width="160" height="51" alt="e-iT Web Solutions"></a></footer><?php endif; ?>
            </section>
        </div>
        <?php
    }
}

// Version 0.3.9 renamed stored keys. Preserve existing site credentials,
// quotes and delivered work when updating from 0.3.7 or earlier.
function eitacto_migrate_legacy_options() {
    $marker = 'eitacto_migration_0310_complete';
    if (get_option($marker, false) === '1') { return; }
    $suffixes = array(
        'tools_options', 'site_connection', 'scope_draft', 'preflight',
        'quote', 'purchase_pending', 'job', 'completed_audit',
        'original_remediation', 'included_recheck_job', 'delivery_recovery',
        'report', 'report_language', 'feedback_draft', 'signed_profile',
        'profile_history', 'private_test_enabled',
    );
    foreach ($suffixes as $suffix) {
        $missing = new stdClass();
        $old = get_option('eit_accessibility_' . $suffix, $missing);
        if ($old === $missing) { continue; }
        $new_key = 'eitacto_' . $suffix;
        if (get_option($new_key, $missing) !== $missing) { continue; }
        if (!add_option($new_key, $old, '', false)) { return; }
    }
    add_option($marker, '1', '', false);
}
add_action('plugins_loaded', 'eitacto_migrate_legacy_options', 1);

new EITACTO_Tools();

// The client is one installable plugin; all paid work stays on the service.
if (!class_exists('EITACTO_Remediation')) { require_once __DIR__ . '/modules/remediation/module.php'; }
if (!class_exists('EITACTO_Audit')) { require_once __DIR__ . '/modules/audit/module.php'; }