<?php
/**
 * "Getting started" checklist on the plugin Dashboard.
 *
 * Every row is derived from state the Dashboard already loads; nothing is
 * stored except the dismissal, and that is versioned so a new row re-surfaces
 * the card for sites that onboarded earlier. Admin-only, read-only on render.
 */
if (!defined('ABSPATH')) exit;

class AllAccessible_GettingStarted {
    const OPTION      = 'aacb_getting_started';
    const VERSION     = 1;   // bump when a row is added
    const AJAX_ACTION = 'aacb_getting_started';

    public static function register() {
        add_action('wp_ajax_' . self::AJAX_ACTION, array(__CLASS__, 'ajax_dismiss'));
    }

    /**
     * @param array $ctx has_account, scanned, has_agentic, active_fixes,
     *                   statement (AllAccessible_StatementPage::status() array),
     *                   urls[connect|scan|fixes|statement]
     * @return array<int, array{key:string,label:string,done:bool,url:string,cta:string}>
     */
    public static function items(array $ctx) {
        $urls = isset($ctx['urls']) && is_array($ctx['urls']) ? $ctx['urls'] : array();
        $st   = isset($ctx['statement']) && is_array($ctx['statement']) ? $ctx['statement'] : array();
        $rows = array();

        $rows[] = array(
            'key'   => 'connect',
            'label' => __('Connect your site to AllAccessible', 'allaccessible'),
            'done'  => !empty($ctx['has_account']),
            'url'   => isset($urls['connect']) ? $urls['connect'] : admin_url('admin.php?page=allaccessible-wizard'),
            'cta'   => __('Connect', 'allaccessible'),
        );

        $rows[] = array(
            'key'   => 'scan',
            'label' => __('Run your first scan', 'allaccessible'),
            'done'  => !empty($ctx['scanned']),
            'url'   => isset($urls['scan']) ? $urls['scan'] : admin_url('admin.php?page=aacb-agentic-fixes'),
            'cta'   => __('Scan now', 'allaccessible'),
        );

        if (!empty($ctx['has_agentic'])) {
            $rows[] = array(
                'key'   => 'fix',
                'label' => __('Approve your first suggested fix ✦', 'allaccessible'),
                'done'  => (int) (isset($ctx['active_fixes']) ? $ctx['active_fixes'] : 0) > 0,
                'url'   => isset($urls['fixes']) ? $urls['fixes'] : admin_url('admin.php?page=aacb-agentic-fixes'),
                'cta'   => __('Review fixes', 'allaccessible'),
            );
        }

        $has_page   = !empty($st['page']);
        $published  = !empty($st['published']);
        $registered = !empty($st['registered']);
        if (!$has_page) {
            $cta = __('Create it', 'allaccessible');
        } elseif (!$published) {
            $cta = __('Publish it', 'allaccessible');
        } else {
            $cta = __('Link it', 'allaccessible');
        }
        $rows[] = array(
            'key'   => 'statement',
            'label' => __('Publish an accessibility statement page', 'allaccessible'),
            'done'  => $published && $registered,
            'url'   => isset($urls['statement']) ? $urls['statement'] : admin_url('admin.php?page=allaccessible#aacb-statement-card'),
            'cta'   => $cta,
        );

        return $rows;
    }

    public static function should_show(array $ctx) {
        $state = get_option(self::OPTION, array());
        $state = is_array($state) ? $state : array();
        if ((int) (isset($state['dismissed_version']) ? $state['dismissed_version'] : 0) >= self::VERSION) {
            return false;
        }
        foreach (self::items($ctx) as $row) {
            if (!$row['done']) return true;
        }
        return false;
    }

    public static function render(array $ctx) {
        $items = self::items($ctx);
        $total = count($items);
        $done  = count(array_filter($items, function ($i) { return $i['done']; }));
        $left  = $total - $done;
        $nonce = wp_create_nonce(self::AJAX_ACTION);
        $pct   = $total > 0 ? (int) round(($done / $total) * 100) : 0;
        // The first undone row is "next": it carries its action inline.
        $next_key = '';
        foreach ($items as $row) { if (!$row['done']) { $next_key = $row['key']; break; } }
        $statement_inline = ($next_key === 'statement') && class_exists('AllAccessible_StatementPage');
        ?>
        <div class="aacx-v2__card aacx-v2__card--elevated" id="aacb-getting-started" style="margin-bottom: var(--aacx-space-6);" data-nonce="<?php echo esc_attr($nonce); ?>" data-ajax="<?php echo esc_url(admin_url('admin-ajax.php')); ?>">
            <div class="aacx-v2__card-header aacb-check__head">
                <div>
                    <h3 style="margin: 0;"><?php esc_html_e('Finish setting up', 'allaccessible'); ?></h3>
                    <p style="font-size: var(--aacx-text-sm); color: var(--aacx-text-muted); margin: 4px 0 0;">
                        <?php
                        echo esc_html(sprintf(
                            /* translators: 1: done count, 2: total rows */
                            __('%1$d of %2$d done.', 'allaccessible'), (int) $done, (int) $total
                        ));
                        echo ' ';
                        echo esc_html($left === 1
                            ? __('One step left and this card goes away.', 'allaccessible')
                            : sprintf(/* translators: %d: steps left */ _n('%d step left.', '%d steps left.', $left, 'allaccessible'), $left));
                        ?>
                    </p>
                </div>
                <div style="display:flex; align-items:center; gap: var(--aacx-space-3);">
                    <div class="aacb-meter" role="img" aria-label="<?php echo esc_attr(sprintf(/* translators: 1: done, 2: total */ __('%1$d of %2$d setup steps complete', 'allaccessible'), (int) $done, (int) $total)); ?>"><span class="aacb-meter__fill aacb-meter__fill--ok" style="width:<?php echo (int) $pct; ?>%;"></span></div>
                    <button type="button" class="aacx-v2__btn aacx-v2__btn--ghost aacx-v2__btn--sm" data-act="dismiss"><?php esc_html_e('Hide', 'allaccessible'); ?></button>
                </div>
            </div>
            <div class="aacx-v2__card-body" style="padding-top: var(--aacx-space-2);">
                <ol class="aacb-check">
                    <?php $n = 0; foreach ($items as $row) : $n++;
                        $is_next = ($row['key'] === $next_key);
                        $state   = $row['done'] ? 'done' : ($is_next ? 'next' : 'todo');
                    ?>
                        <li class="aacb-check__row aacb-check__row--<?php echo esc_attr($state); ?>"<?php if ($row['key'] === 'statement') echo ' id="aacb-statement-card"'; ?>>
                            <span class="aacb-check__mark aacb-check__mark--<?php echo esc_attr($state); ?>" aria-hidden="true"><?php echo $row['done'] ? '✓' : (int) $n; ?></span>
                            <span class="aacb-check__label"><?php echo esc_html($row['label']); ?><span class="screen-reader-text"> — <?php echo $row['done'] ? esc_html__('done', 'allaccessible') : esc_html__('to do', 'allaccessible'); ?></span></span>
                            <?php if (!$row['done'] && !($is_next && $row['key'] === 'statement' && $statement_inline)) : ?>
                                <a class="aacx-v2__btn <?php echo $is_next ? 'aacx-v2__btn--primary' : 'aacx-v2__btn--secondary'; ?> aacx-v2__btn--sm" href="<?php echo esc_url($row['url']); ?>"><?php echo esc_html($row['cta']); ?></a>
                            <?php endif; ?>
                            <?php if ($is_next && $row['key'] === 'statement' && $statement_inline) : ?>
                                <div class="aacb-check__panel"><?php AllAccessible_StatementPage::render_guide('checklist'); ?></div>
                            <?php endif; ?>
                        </li>
                    <?php endforeach; ?>
                </ol>
            </div>
        </div>
        <script>
        (function () {
            var card = document.getElementById('aacb-getting-started'); if (!card) return;
            var btn = card.querySelector('[data-act="dismiss"]'); if (!btn) return;
            btn.addEventListener('click', function () {
                var fd = new FormData();
                fd.append('action', '<?php echo esc_js(self::AJAX_ACTION); ?>');
                fd.append('_wpnonce', card.getAttribute('data-nonce'));
                fetch(card.getAttribute('data-ajax'), { method: 'POST', credentials: 'same-origin', body: fd }).then(function () { card.remove(); });
            });
        })();
        </script>
        <?php
    }

    public static function ajax_dismiss() {
        if (!current_user_can('manage_options')) {
            wp_send_json_error(array('message' => __('Unauthorized', 'allaccessible')), 403);
        }
        check_ajax_referer(self::AJAX_ACTION, '_wpnonce');
        update_option(self::OPTION, array('dismissed_version' => self::VERSION, 'dismissed_at' => time()), false);
        wp_send_json_success();
    }
}