<?php
if (!defined('ABSPATH')) {
    exit;
}

class EnspirePlugins_ACFW_Admin {
    
    public function __construct() {
        add_action('admin_menu', array($this, 'add_admin_menu'), 99);
        add_action('admin_init', array($this, 'register_settings'));
    }
    
    public function add_admin_menu() {
        add_menu_page(
            esc_html__('Woo Checkout Fields', 'additional-checkout-fields-for-woo'),
            esc_html__('Checkout Fields', 'additional-checkout-fields-for-woo'),
            'manage_woocommerce',
            'woo-checkout-fields',
            array($this, 'display_admin_page'),
            'dashicons-list-view',
			56
        );
    }
    
    public function register_settings() {
        register_setting(
            'enspireplugins_acfw_settings_group',
            'enspireplugins_acfw_settings',
            array($this, 'sanitize_settings')
        );
    }
    
    public function sanitize_settings($input) {
        $sanitized = array();
        
        $sanitized['custom_fields'] = array();
        
        if (isset($input['custom_fields']) && is_array($input['custom_fields'])) {
            foreach ($input['custom_fields'] as $field) {
                if (empty($field['id']) || empty($field['label'])) {
                    continue;
                }
                
                $sanitized_field = array();
                $sanitized_field['id'] = sanitize_key($field['id']);
                $sanitized_field['label'] = sanitize_text_field($field['label']);
                
                $allowed_types = array('text', 'number', 'email', 'url', 'select', 'checkbox', 'radio', 'textarea', 'heading');
                $sanitized_field['type'] = in_array($field['type'], $allowed_types) ? $field['type'] : 'text';
                
                if ($sanitized_field['type'] !== 'heading') {
                    $sanitized_field['placeholder'] = isset($field['placeholder']) ? sanitize_text_field($field['placeholder']) : '';
                    $sanitized_field['required'] = ($field['required'] === 'yes') ? 'yes' : 'no';
                }
                
                $sanitized_field['active'] = ($field['active'] === 'yes') ? 'yes' : 'no';

				$sanitized_field['show_in_emails'] = isset($field['show_in_emails']) && ($field['show_in_emails'] === 'yes') ? 'yes' : 'no';
                $sanitized_field['show_in_order_confirmation'] = isset($field['show_in_order_confirmation']) && ($field['show_in_order_confirmation'] === 'yes') ? 'yes' : 'no';
                
                if (isset($field['options']) && in_array($sanitized_field['type'], array('select', 'radio'))) {
                    if (is_string($field['options'])) {
                        $decoded_options = json_decode($field['options'], true);
                        if (is_array($decoded_options)) {
                            $sanitized_field['options'] = $this->sanitize_field_options($decoded_options);
                        } else {
                            $sanitized_field['options'] = array();
                        }
                    } elseif (is_array($field['options'])) {
                        $sanitized_field['options'] = $this->sanitize_field_options($field['options']);
                    } else {
                        $sanitized_field['options'] = array();
                    }
                }
                
                if (isset($field['default_value'])) {
                    $sanitized_field['default_value'] = sanitize_text_field($field['default_value']);
                }
                
                if ($sanitized_field['type'] === 'checkbox') {
                    if (isset($field['value'])) {
                        $sanitized_field['value'] = sanitize_text_field($field['value']);
                    } else {
                        $sanitized_field['value'] = '1';
                    }
                }
                
                if ($sanitized_field['type'] === 'textarea') {
                    if (isset($field['rows'])) {
                        $sanitized_field['rows'] = intval($field['rows']);
                        if ($sanitized_field['rows'] < 1) {
                            $sanitized_field['rows'] = 4;
                        }
                    } else {
                        $sanitized_field['rows'] = 4;
                    }
                }
                
                if ($sanitized_field['type'] === 'number') {
                    if (isset($field['min'])) {
                        $sanitized_field['min'] = sanitize_text_field($field['min']);
                    }
                    if (isset($field['max'])) {
                        $sanitized_field['max'] = sanitize_text_field($field['max']);
                    }
                }
                
                $sanitized['custom_fields'][] = $sanitized_field;
            }
        }
        
        return $sanitized;
    }
    
    private function sanitize_field_options($options) {
        $sanitized_options = array();
        
        if (is_array($options)) {
            foreach ($options as $option) {
                if (is_string($option)) {
                    $label = sanitize_text_field($option);
                    $value = $this->generate_option_slug($label);
                    
                    $sanitized_options[] = array(
                        'label' => $label,
                        'value' => $value
                    );
                } elseif (is_array($option) && isset($option['label']) && isset($option['value'])) {
                    $sanitized_options[] = array(
                        'label' => sanitize_text_field($option['label']),
                        'value' => sanitize_text_field($option['value'])
                    );
                } elseif (is_array($option) && count($option) === 1) {
                    $label = sanitize_text_field(reset($option));
                    $value = $this->generate_option_slug($label);
                    
                    $sanitized_options[] = array(
                        'label' => $label,
                        'value' => $value
                    );
                }
            }
        }
        
        return $sanitized_options;
    }
    
    private function generate_option_slug($text) {
        $slug = strtolower($text);
        $slug = preg_replace('/[^a-z0-9]+/', '_', $slug);
        $slug = trim($slug, '_');
		
        if (empty($slug)) {
            $slug = 'option_' . uniqid();
        }
        
        return $slug;
    }
    
    public function display_admin_page() {
        require_once ENSPIREPLUGINS_ACFW_PLUGIN_DIR . 'includes/admin-page.php';
    }
}