<?php
/**
 * Batch 1 — Elementor completeness gaps (net-new tools).
 *
 * Part of the full-parity merge (elementor-mcp + wordpress-mcp). These are
 * capabilities the plugin did not already expose. Registered via the plugin's
 * own `asktam_mcp_register_tools` extension hook — no existing file is modified.
 *
 * License: GPL-2.0-or-later. Behaviour modelled on the GPL-2.0 elementor-mcp
 * project; implemented independently against the Elementor data layer. See NOTICE.md.
 */

namespace AskTamMCP\Extensions;

defined('ABSPATH') || exit;

class Batch1 {

    public static function register($registry): void {
        if (!defined('ELEMENTOR_VERSION')) return; // Elementor-only batch; stay inert otherwise.

        $def = function (string $name, string $desc, array $props, array $required, string $scope, string $method) {
            $schema = ['type' => 'object', 'properties' => $props];
            if ($required) $schema['required'] = $required;
            return ['name' => $name, 'description' => $desc, 'scope' => $scope,
                    'handler' => 'AskTamMCP\\Extensions\\Batch1::' . $method, 'inputSchema' => $schema];
        };

        $registry->register($def('elementor_add_section',
            'Add a classic Elementor section (legacy row layout). Optional parent_id nests it; settings accepts gap, content_width, background_color, padding, etc.',
            ['post_id' => ['type' => 'integer'], 'parent_id' => ['type' => 'string'], 'position' => ['type' => 'integer'], 'settings' => ['type' => 'object']],
            ['post_id'], 'write', 'addSection'));

        $registry->register($def('elementor_add_column',
            'Add a column inside a section. size is the column width in percent (1-100, default 100).',
            ['post_id' => ['type' => 'integer'], 'section_id' => ['type' => 'string'], 'size' => ['type' => 'integer', 'default' => 100], 'position' => ['type' => 'integer'], 'settings' => ['type' => 'object']],
            ['post_id', 'section_id'], 'write', 'addColumn'));

        $registry->register($def('elementor_set_global_font',
            'Add or update a typography entry in the Elementor global font palette (system_typography).',
            ['id' => ['type' => 'string'], 'title' => ['type' => 'string'], 'font_family' => ['type' => 'string'], 'font_weight' => ['type' => 'string']],
            ['title', 'font_family'], 'write', 'setGlobalFont'));

        $registry->register($def('elementor_delete_global_color',
            'Remove a colour from the Elementor global palette by its id.',
            ['id' => ['type' => 'string']],
            ['id'], 'write', 'deleteGlobalColor'));

        $registry->register($def('elementor_delete_template',
            'Delete a saved Elementor library template permanently.',
            ['template_id' => ['type' => 'integer']],
            ['template_id'], 'write', 'deleteTemplate'));
    }

    private static function data(): \AskTamMCP\Elementor\Data\ElementorData {
        return new \AskTamMCP\Elementor\Data\ElementorData();
    }

    private static function activeKitId(): int {
        return (int) get_option('elementor_active_kit', 0);
    }

    public static function addSection(array $args): array {
        $post_id   = (int) ($args['post_id'] ?? 0);
        $parent_id = $args['parent_id'] ?? '';
        $position  = (int) ($args['position'] ?? -1);
        $settings  = is_array($args['settings'] ?? null) ? $args['settings'] : [];
        $ed   = self::data();
        $data = $ed->get_page_data($post_id);
        if (is_wp_error($data)) throw new \RuntimeException($data->get_error_message());
        $id = $ed->generate_id();
        $section = ['id' => $id, 'elType' => 'section', 'settings' => $settings, 'elements' => [], 'isInner' => !empty($parent_id)];
        $ed->insert_element($data, $parent_id, $section, $position);
        $saved = $ed->save_page_data($post_id, $data);
        if (is_wp_error($saved)) throw new \RuntimeException($saved->get_error_message());
        return ['element_id' => $id, 'post_id' => $post_id];
    }

    public static function addColumn(array $args): array {
        $post_id    = (int) ($args['post_id'] ?? 0);
        $section_id = $args['section_id'] ?? '';
        $size       = max(1, min(100, (int) ($args['size'] ?? 100)));
        $position   = (int) ($args['position'] ?? -1);
        $settings   = is_array($args['settings'] ?? null) ? $args['settings'] : [];
        if (empty($section_id)) throw new \RuntimeException('section_id is required.');
        $ed   = self::data();
        $data = $ed->get_page_data($post_id);
        if (is_wp_error($data)) throw new \RuntimeException($data->get_error_message());
        $id = $ed->generate_id();
        $column = ['id' => $id, 'elType' => 'column',
                   'settings' => array_merge(['_column_size' => $size, '_inline_size' => $size], $settings),
                   'elements' => [], 'isInner' => false];
        $ok = $ed->insert_element($data, $section_id, $column, $position);
        if (!$ok) throw new \RuntimeException("Section not found: {$section_id}");
        $saved = $ed->save_page_data($post_id, $data);
        if (is_wp_error($saved)) throw new \RuntimeException($saved->get_error_message());
        return ['element_id' => $id, 'post_id' => $post_id, 'section_id' => $section_id];
    }

    public static function setGlobalFont(array $args): array {
        $kit = self::activeKitId();
        if (!$kit) throw new \RuntimeException('No active Elementor kit found.');
        $s     = get_post_meta($kit, '_elementor_page_settings', true) ?: [];
        $fonts = $s['system_typography'] ?? [];
        $id    = $args['id'] ?? ('font_' . substr(md5(($args['title'] ?? '') . uniqid()), 0, 6));
        $entry = [
            '_id'                     => $id,
            'title'                   => $args['title'] ?? $id,
            'typography_typography'   => 'custom',
            'typography_font_family'  => $args['font_family'] ?? '',
            'typography_font_weight'  => $args['font_weight'] ?? '',
        ];
        $found = false;
        foreach ($fonts as &$f) {
            if (($f['_id'] ?? '') === $id) { $f = array_merge($f, $entry); $found = true; break; }
        }
        unset($f);
        if (!$found) $fonts[] = $entry;
        $s['system_typography'] = $fonts;
        update_post_meta($kit, '_elementor_page_settings', $s);
        return ['success' => true, 'id' => $id, 'kit_id' => $kit];
    }

    public static function deleteGlobalColor(array $args): array {
        $kit = self::activeKitId();
        if (!$kit) throw new \RuntimeException('No active Elementor kit found.');
        $id     = (string) ($args['id'] ?? '');
        $s      = get_post_meta($kit, '_elementor_page_settings', true) ?: [];
        $colors = $s['system_colors'] ?? [];
        $before = count($colors);
        $colors = array_values(array_filter($colors, fn($c) => ($c['_id'] ?? '') !== $id));
        if (count($colors) === $before) throw new \RuntimeException("Global colour not found: {$id}");
        $s['system_colors'] = $colors;
        update_post_meta($kit, '_elementor_page_settings', $s);
        return ['success' => true, 'deleted_id' => $id, 'kit_id' => $kit];
    }

    public static function deleteTemplate(array $args): array {
        $tid = (int) ($args['template_id'] ?? 0);
        $p   = $tid ? get_post($tid) : null;
        if (!$p || $p->post_type !== 'elementor_library') {
            throw new \RuntimeException("Not an Elementor template: {$tid}");
        }
        $res = wp_delete_post($tid, true);
        if (!$res) throw new \RuntimeException("Failed to delete template {$tid}");
        return ['success' => true, 'deleted_template_id' => $tid];
    }
}