<?php
/**
 * VIP modal view model + card HTML (legacy pay-vip modal / vip-card parity).
 *
 * @package AKSRT
 */

namespace AKSRT\Content;

defined('ABSPATH') || exit;

trait VipServiceModal {

    /**
     * Build the minimal JSON view model consumed by pay-vip.js.
     *
     * The catalog, member state, package prices, payment methods, and allowed
     * actions are all calculated server-side. No payment gateway response or
     * server-rendered modal HTML is included in this payload.
     *
     * @return array<string,mixed>
     */
    public function get_modal_view_model(int $user_id, int $prefer_level = 1): array {
        $catalog = $this->get_catalog($user_id);
        $vip = $this->get_vip_settings_context();
        $member = $this->get_vip_member_context($user_id);
        $levels = is_array($vip['levels'] ?? null) ? $vip['levels'] : [];
        $prefer_level = max(1, min(2, $prefer_level));

        $level_view = [];
        foreach ([1, 2] as $level) {
            if (empty($levels[$level]['enabled'])) {
                continue;
            }
            $equity = (string) ($levels[$level]['equity'] ?? '');
            $equity = function_exists('aksrt_format_vip_equity_html')
                ? (string) aksrt_format_vip_equity_html($equity)
                : wp_kses_post($equity);
            $level_view[] = [
                'level' => $level,
                'name' => (string) ($levels[$level]['name'] ?? ('VIP' . $level)),
                'desc' => (string) ($levels[$level]['desc'] ?? ''),
                'equity' => $equity,
                'img_icon' => esc_url_raw((string) ($levels[$level]['img_icon'] ?? '')),
            ];
        }

        $package_ids = [];
        $has_renew = false;
        $has_upgrade = false;
        $groups = is_array($catalog['level_packages'] ?? null) ? $catalog['level_packages'] : [];
        foreach ($groups as $group) {
            if (!is_array($group)) {
                continue;
            }
            $action = sanitize_key((string) ($group['action'] ?? 'pay'));
            $has_renew = $has_renew || $action === 'renew';
            $has_upgrade = $has_upgrade || $action === 'upgrade';
            foreach ((array) ($group['items'] ?? []) as $item) {
                if (is_array($item) && (int) ($item['package_id'] ?? 0) > 0) {
                    $package_ids[] = (int) $item['package_id'];
                }
            }
        }
        $points_exchange = is_array($catalog['points_exchange'] ?? null) ? $catalog['points_exchange'] : [];
        $methods = is_array($catalog['payment_methods'] ?? null) ? $catalog['payment_methods'] : [];
        $no_payment_method = $methods === [];
        $action_reasons = [
            'purchase' => $no_payment_method
                ? 'no_payment_method'
                : ($package_ids === [] ? 'no_package' : ''),
            'renew' => $no_payment_method
                ? 'no_payment_method'
                : ($has_renew ? '' : 'not_available'),
            'upgrade' => $no_payment_method
                ? 'no_payment_method'
                : ($has_upgrade ? '' : 'not_available'),
            'points_exchange' => !empty($points_exchange['enabled']) && !empty($points_exchange['packages'])
                ? ''
                : 'not_available',
        ];

        $member_state = (string) ($member['state'] ?? 'unopened');
        $member_version = substr(hash('sha256', (string) wp_json_encode([
            'level' => (int) ($member['level'] ?? 0),
            'expires' => (int) ($member['expires'] ?? 0),
            'state' => $member_state,
        ])), 0, 16);
        $catalog_version = substr(hash('sha256', (string) wp_json_encode([
            'packages' => $groups,
            'points' => $points_exchange,
            'methods' => $methods,
            'levels' => $level_view,
        ])), 0, 16);

        $user = get_userdata($user_id);
        $avatar_url = function_exists('get_avatar_url')
            ? (string) get_avatar_url($user_id, ['size' => 42])
            : '';

        return [
            'enabled' => !empty($catalog['enabled']),
            'prefer_level' => $prefer_level,
            'catalog' => [
                'desc' => (string) ($catalog['desc'] ?? ''),
                'help_text' => (string) ($catalog['help_text'] ?? ''),
                'more' => (string) ($vip['more'] ?? ''),
                'currency_name' => (string) ($catalog['currency_name'] ?? ''),
                'level_packages' => $groups,
                'points_exchange' => $points_exchange,
                'vip_url' => (string) ($catalog['vip_url'] ?? ''),
            ],
            'member' => [
                'id' => $user_id,
                'name' => $user ? (string) $user->display_name : '',
                'avatar_url' => $avatar_url,
                'level' => (int) ($member['level'] ?? 0),
                'expires' => (int) ($member['expires'] ?? 0),
                'expires_label' => (string) ($member['expires_label'] ?? ''),
                'state' => (string) ($member['state'] ?? 'unopened'),
                'is_permanent' => !empty($member['is_permanent']),
                'points' => (int) ($catalog['user_points'] ?? 0),
                'logged_in' => $user_id > 0,
            ],
            'levels' => $level_view,
            'payment_methods' => $methods,
            'allowed_actions' => [
                'purchase' => $package_ids !== [] && $methods !== [],
                'renew' => $has_renew && $methods !== [],
                'upgrade' => $has_upgrade && $methods !== [],
                'points_exchange' => !empty($points_exchange['enabled']) && !empty($points_exchange['packages']),
            ],
            'action_reasons' => $action_reasons,
            'version' => [
                'schema' => 1,
                'member' => $member_version,
                'catalog' => $catalog_version,
                // Stable revision token; do not use request time and bust short cache.
                'updated_at' => $member_version . ':' . $catalog_version,
                'tags' => ['vip', 'orders'],
            ],
        ];
    }

    /**
     * Mini hover card for header (legacy aksrtpay_get_vip_card).
     */
    public function render_vip_card(int $level, int $user_id = 0): string {
        $level = max(1, min(2, $level));
        $vip = $this->get_vip_settings_context();
        $levels = is_array($vip['levels'] ?? null) ? $vip['levels'] : [];
        if (empty($levels[$level]['enabled'])) {
            return '';
        }
        $name = (string) ($levels[$level]['name'] ?? ('VIP' . $level));
        $equity = (string) ($levels[$level]['equity'] ?? '');
        $cls = $user_id > 0 ? ' pay-vip' : ' signin-loader';

        $equity_html = $equity !== ''
            ? '<ul class="mb10 relative">' . wp_kses_post($equity) . '</ul>'
            : '';

        $icon_url = esc_url((string) ($levels[$level]['img_icon'] ?? ''));
        $icon = $icon_url !== ''
            ? '<img' . aksrt_get_lazy_attr('lazy_other', $icon_url, 'img-icon') . ' title="' . esc_attr($name) . '" alt="' . esc_attr($name) . '" decoding="async">'
            : '<i class="fa fas fa-gem" aria-hidden="true"></i>';
        $html  = '<div class="vip-card pointer level-' . $level . ' vip-theme' . $level . $cls . '" vip-level="' . $level . '">';
        $html .= '<div class="abs-center vip-baicon" aria-hidden="true">' . $icon . '</div>';
        $html .= '<div class="vip-img abs-right">' . $icon . '</div>';
        $html .= '<div class="relative">';
        $html .= '<div class="vip-name mb10"><span class="mr6">' . $icon . '</span>' . esc_html($name) . '</div>';
        $html .= $equity_html;
        $html .= '<a class="but jb-blue radius payvip-button" href="javascript:;">'
            . esc_html(sprintf(__('开通%s', 'aksrt'), $name))
            . '<span class="ml6"><i class="fa fas fa-chevron-circle-right" aria-hidden="true"></i></span></a>';
        $html .= '</div></div>';
        return $html;
    }
}