<?php

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

if ( ! class_exists( 'AIEO_Shipping_Table_Rate', false ) ) {
if (!class_exists('WC_Shipping_Method')) {
    
    return;
}

class AIEO_Shipping_Table_Rate extends WC_Shipping_Method {

    public function __construct($instance_id = 0) {
        $this->id                 = 'aieo_table_rate';
        $this->instance_id        = absint($instance_id);
        $this->method_title       = __('Rooster One Table Rate', 'ai-eshop-optimizer');
        $this->method_description = __(
            'Optimised table-rate shipping with object-cached rule lookup. Manage rules from the Rooster One admin.',
            'ai-eshop-optimizer'
        );
        $this->supports = array(
            'shipping-zones',
            'instance-settings',
            'instance-settings-modal',
        );

        $this->init();
    }

    public function init() {
        $this->init_form_fields();
        $this->init_settings();

        $this->title   = $this->get_option('title', __('Shipping', 'ai-eshop-optimizer'));
        $this->enabled = $this->get_option('enabled', 'yes');
        $this->tax_status = $this->get_option('tax_status', 'taxable');

        add_action('woocommerce_update_options_shipping_' . $this->id, array($this, 'process_admin_options'));
    }

    public function init_form_fields() {
        
        
        
        
        $admin_url = admin_url('admin.php?page=aieo-shipping-rates&instance_id=' . $this->instance_id);

        $this->instance_form_fields = array(
            'title' => array(
                'title'       => __('Method title', 'ai-eshop-optimizer'),
                'type'        => 'text',
                'description' => __('Storefront-facing name of this shipping option.', 'ai-eshop-optimizer'),
                
                
                
                
                
                
                
                
                'default'     => '',
                'desc_tip'    => true,
            ),
            'tax_status' => array(
                'title'   => __('Tax status', 'ai-eshop-optimizer'),
                'type'    => 'select',
                'default' => 'taxable',
                'options' => array(
                    'taxable' => __('Taxable', 'ai-eshop-optimizer'),
                    'none'    => _x('None', 'Tax status', 'ai-eshop-optimizer'),
                ),
            ),
            'manage_rates' => array(
                'title'       => __('Rate rules', 'ai-eshop-optimizer'),
                'type'        => 'title',
                'description' => sprintf(
                    
                    __('Rules for this method are managed centrally in the <a href="%s">AIEO Shipping Rates admin</a>.', 'ai-eshop-optimizer'),
                    esc_url($admin_url)
                ),
            ),
        );
    }

    
    public function calculate_shipping($package = array()) {
        if (!is_array($package)) { return; }

        $summary = AIEO_Runtime_TRS_Matcher::summarise_package($package);
        $version = AIEO_Runtime_TRS_Rule_Loader::cache_version();
        $hash    = AIEO_Runtime_TRS_Cache::package_hash($this->instance_id, $package, $summary, $version);

        $matched = AIEO_Runtime_TRS_Cache::get($hash);
        $cache_status = ($matched !== null) ? 'HIT' : 'MISS';
        if ($matched === null) {
            $rules   = AIEO_Runtime_TRS_Rule_Loader::get_rules($this->instance_id);
            $matched = AIEO_Runtime_TRS_Matcher::match($rules, $summary);
            AIEO_Runtime_TRS_Cache::set($hash, $matched);
        }

        
        
        
        if (defined('WP_DEBUG') && WP_DEBUG) {
            $req_action = isset($_REQUEST['wc-ajax']) ? $_REQUEST['wc-ajax'] : (isset($_REQUEST['action']) ? $_REQUEST['action'] : 'render');
            $is_store_api = (defined('REST_REQUEST') && REST_REQUEST) ? '|REST' : '';
            error_log(sprintf(
                '[AIEO_TRS] inst=%d ctx=%s%s cache=%s subtotal=%.2f weight=%.4f qty=%d -> %d rules: %s',
                (int) $this->instance_id,
                $req_action,
                $is_store_api,
                $cache_status,
                (float) $summary['subtotal'],
                (float) $summary['total_weight'],
                (int) $summary['total_qty'],
                count($matched),
                wp_json_encode(array_map(function ($r) {
                    return array(
                        'rid'   => $r['rule_id'] ?? 0,
                        'cost'  => $r['cost'] ?? 0,
                        'abort' => !empty($r['abort']),
                    );
                }, $matched))
            ));
        }

        if (empty($matched)) { return; }

        
        
        
        
        $abort = $matched[0];
        if (!empty($abort['abort'])) {
            if (!empty($abort['abort_reason']) &&
                function_exists('is_checkout') && is_checkout() &&
                function_exists('wc_has_notice') && function_exists('wc_add_notice') &&
                !wc_has_notice($abort['abort_reason'], 'notice')) {
                wc_add_notice((string) $abort['abort_reason'], 'notice');
            }
            return;
        }

        
        
        
        $title_default = (string) $this->title;
        foreach ($matched as $i => $rule) {
            if (!empty($rule['abort'])) { continue; }
            $rate_id    = $this->get_rate_id() . '_rule_' . (int) $rule['rule_id'];
            $rate_label = $rule['label'] !== '' ? $rule['label'] : $title_default;
            $cost       = (float) $rule['cost'];

            $this->add_rate(array(
                'id'        => $rate_id,
                'label'     => $rate_label,
                'cost'      => $cost,
                'package'   => $package,
                'meta_data' => array(
                    'aieo_rule_id'    => (int) $rule['rule_id'],
                    'aieo_method'     => $this->id,
                    'aieo_instance'   => (int) $this->instance_id,
                ),
            ));
        }
    }

    
    public function is_available($package) {
        $available = ($this->enabled === 'yes');
        return apply_filters(
            'woocommerce_shipping_' . $this->id . '_is_available',
            $available,
            $package,
            $this
        );
    }
}

}