<?php
/**
 * Settings Controller
 *
 * @package Jeremias\WcLicensedProduct\Admin
 */

declare(strict_types=1);

namespace Jeremias\WcLicensedProduct\Admin;

/**
 * Handles WooCommerce settings tab for license defaults
 */
final class SettingsController
{
    /**
     * Settings option name
     */
    public const OPTION_NAME = 'wc_licensed_product_settings';

    /**
     * Constructor
     */
    public function __construct()
    {
        $this->registerHooks();
    }

    /**
     * Register WordPress hooks
     */
    private function registerHooks(): void
    {
        add_filter('woocommerce_settings_tabs_array', [$this, 'addSettingsTab'], 50);
        add_action('woocommerce_settings_tabs_licensed_product', [$this, 'renderSettingsTab']);
        add_action('woocommerce_update_options_licensed_product', [$this, 'saveSettings']);
    }

    /**
     * Add settings tab to WooCommerce settings
     */
    public function addSettingsTab(array $tabs): array
    {
        $tabs['licensed_product'] = __('Licensed Products', 'wc-licensed-product');
        return $tabs;
    }

    /**
     * Get settings fields
     */
    public function getSettingsFields(): array
    {
        return [
            'section_title' => [
                'name' => __('Default License Settings', 'wc-licensed-product'),
                'type' => 'title',
                'desc' => __('These settings serve as defaults for new licensed products. Individual product settings override these defaults.', 'wc-licensed-product'),
                'id' => 'wc_licensed_product_section_defaults',
            ],
            'default_max_activations' => [
                'name' => __('Default Max Activations', 'wc-licensed-product'),
                'type' => 'number',
                'desc' => __('Default maximum number of domain activations per license.', 'wc-licensed-product'),
                'id' => 'wc_licensed_product_default_max_activations',
                'default' => '1',
                'custom_attributes' => [
                    'min' => '1',
                    'step' => '1',
                ],
            ],
            'default_validity_days' => [
                'name' => __('Default License Validity (Days)', 'wc-licensed-product'),
                'type' => 'number',
                'desc' => __('Default number of days a license is valid. Leave empty or set to 0 for lifetime licenses.', 'wc-licensed-product'),
                'id' => 'wc_licensed_product_default_validity_days',
                'default' => '',
                'placeholder' => __('Lifetime', 'wc-licensed-product'),
                'custom_attributes' => [
                    'min' => '0',
                    'step' => '1',
                ],
            ],
            'default_bind_to_version' => [
                'name' => __('Default Bind to Major Version', 'wc-licensed-product'),
                'type' => 'checkbox',
                'desc' => __('If enabled, licenses are bound to the major version at purchase time by default.', 'wc-licensed-product'),
                'id' => 'wc_licensed_product_default_bind_to_version',
                'default' => 'no',
            ],
            'section_end' => [
                'type' => 'sectionend',
                'id' => 'wc_licensed_product_section_defaults_end',
            ],
        ];
    }

    /**
     * Render settings tab content
     */
    public function renderSettingsTab(): void
    {
        woocommerce_admin_fields($this->getSettingsFields());
    }

    /**
     * Save settings
     */
    public function saveSettings(): void
    {
        woocommerce_update_options($this->getSettingsFields());
    }

    /**
     * Get default max activations
     */
    public static function getDefaultMaxActivations(): int
    {
        $value = get_option('wc_licensed_product_default_max_activations', 1);
        return max(1, (int) $value);
    }

    /**
     * Get default validity days
     */
    public static function getDefaultValidityDays(): ?int
    {
        $value = get_option('wc_licensed_product_default_validity_days', '');
        if ($value === '' || $value === '0') {
            return null;
        }
        return (int) $value;
    }

    /**
     * Get default bind to version setting
     */
    public static function getDefaultBindToVersion(): bool
    {
        return get_option('wc_licensed_product_default_bind_to_version', 'no') === 'yes';
    }
}