<?php
/**
 * Batch 30 — MetForm tools. Net-new, GPL-2.0-or-later. See NOTICE.md.
 * Inert unless MetForm (METFORM_VERSION) is active. Forms are the metform-form CPT.
 */

namespace AskTamMCP\Extensions;

defined('ABSPATH') || exit;

class Batch30 {

    public static function register($registry): void {
        if (!defined('METFORM_VERSION')) return;

        $def = function (string $name, string $desc, array $props, array $required, string $scope, string $method) {
            $schema = ['type' => 'object', 'properties' => $props ?: new \stdClass()];
            if ($required) $schema['required'] = $required;
            return ['name' => $name, 'description' => $desc, 'scope' => $scope,
                    'handler' => 'AskTamMCP\\Extensions\\Batch30::' . $method, 'inputSchema' => $schema];
        };

        $registry->register($def('metform_detect', 'Report whether MetForm is active and its version.', [], [], 'read', 'detect'));
        $registry->register($def('metform_list_forms', 'List MetForm forms (id, title).',
            ['per_page' => ['type' => 'integer', 'default' => 100]], [], 'read', 'listForms'));
        $registry->register($def('metform_list_entries', 'List MetForm entries (newest first): id, form_id, created. Reads the metform_entries table.',
            ['form_id' => ['type' => 'integer'], 'per_page' => ['type' => 'integer', 'default' => 25]], [], 'read', 'listEntries'));
    }

    public static function detect(array $args): array {
        return ['active' => defined('METFORM_VERSION'), 'version' => defined('METFORM_VERSION') ? METFORM_VERSION : null];
    }

    public static function listForms(array $args): array {
        $posts = get_posts(['post_type' => 'metform-form', 'post_status' => 'publish',
            'numberposts' => (int) ($args['per_page'] ?? 100), 'orderby' => 'title', 'order' => 'ASC']);
        $out = [];
        foreach ($posts as $p) $out[] = ['id' => $p->ID, 'title' => $p->post_title];
        return ['count' => count($out), 'forms' => $out];
    }

    public static function listEntries(array $args): array {
        global $wpdb;
        $t = $wpdb->prefix . 'metform_entries';
        if ($wpdb->get_var($wpdb->prepare('SHOW TABLES LIKE %s', $t)) !== $t) {
            return ['supported' => false, 'note' => 'metform_entries table not found.', 'entries' => []];
        }
        $per = max(1, (int) ($args['per_page'] ?? 25));
        $where = '';
        if (!empty($args['form_id'])) $where = $wpdb->prepare('WHERE form_id = %d', (int) $args['form_id']);
        $rows = $wpdb->get_results("SELECT id, form_id, created FROM {$t} {$where} ORDER BY id DESC LIMIT {$per}", ARRAY_A);
        $out = [];
        foreach ((array) $rows as $r) $out[] = ['id' => (int) $r['id'], 'form_id' => (int) $r['form_id'], 'created' => $r['created'] ?? ''];
        return ['supported' => true, 'count' => count($out), 'entries' => $out];
    }
}