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<?php
/**
 * Manage Billing
 *
 * @package Tutor\Ecommerce
 * @author Themeum
 * @link https://themeum.com
 * @since 3.0.0
 */

namespace Tutor\Ecommerce;

use TUTOR\BaseController;
use Tutor\Helpers\HttpHelper;
use Tutor\Helpers\ValidationHelper;
use Tutor\Models\BillingModel;
use Tutor\Traits\JsonResponse;

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

/**
 * BillingController class
 *
 * @since 3.0.0
 */
class BillingController extends BaseController {

/**
	 * Billing model
	 *
	 * @since 3.0.0
	 *
	 * @var BillingModel
	 */
	private $model;

/**
	 * Trait for sending JSON response
	 */
	use JsonResponse;

/**
	 * Constructor.
	 *
	 * Initializes the Billing class, sets the page title, and optionally registers
	 * hooks for handling AJAX requests related to billing data.
	 *
	 * @param bool $register_hooks Whether to register hooks for handling requests. Default is true.
	 *
	 * @since 3.0.0
	 *
	 * @return void
	 */
	public function __construct( $register_hooks = true ) {
		$this->model = new BillingModel();

if ( $register_hooks ) {
			add_filter( 'tutor_dashboard/nav_items/settings/nav_items', array( $this, 'register_nav' ) );
			add_filter( 'load_dashboard_template_part_from_other_location', array( $this, 'load_template' ) );

/**
			 * Handle AJAX request for saving billing info if current user.
			 *
			 * @since 3.0.0
			 */
			add_action( 'wp_ajax_tutor_save_billing_info', array( $this, 'save_billing_info' ) );

/**
			 * Handle AJAX request for getting billing info if current user.
			 *
			 * @since 3.0.0
			 */
			add_action( 'wp_ajax_tutor_get_billing_info', array( $this, 'get_billing_info' ) );
		}
	}

/**
	 * Register billing nav menu for settings
	 *
	 * @since 3.0.0
	 *
	 * @param array $tabs setting navigation tabs.
	 *
	 * @return array
	 */
	public static function register_nav( $tabs ) {
		$billing_url = tutor_utils()->get_tutor_dashboard_page_permalink( 'settings/billing' );

$new_tab = array(
			'url'   => esc_url( $billing_url ),
			'title' => __( 'Billing', 'tutor' ),
			'role'  => false,
		);

$tabs['billing'] = $new_tab;

return $tabs;
	}

/**
	 * Load billing template for settings
	 *
	 * Based on query_vars filter template path
	 *
	 * @since 3.0.0
	 *
	 * @param string $location default file location.
	 *
	 * @return string
	 */
	public static function load_template( $location ) {
		$page_name          = get_query_var( 'pagename' );
		$dashboard_sub_page = get_query_var( 'tutor_dashboard_sub_page' );

$dashboard_page_id = (int) tutor_utils()->get_option( 'tutor_dashboard_page_id' );
		$dashboard_page    = get_post( $dashboard_page_id );

// Current page is dashboard & sub page is billing.
		if ( $page_name === $dashboard_page->post_name && 'billing' === $dashboard_sub_page ) {
			$template = tutor()->path . 'templates/ecommerce/billing.php';

if ( file_exists( $template ) ) {
				$location = $template;
			}
		}

return $location;
	}

/**
	 * Get the customer model object
	 *
	 * @since 3.0.0
	 *
	 * @return object
	 */
	public function get_model() {
		return $this->model;
	}

/**
	 * Save billing information for the current user.
	 *
	 * @since 3.0.0
	 *
	 * @return void
	 */
	public function save_billing_info() {
		if ( ! tutor_utils()->is_nonce_verified() ) {
			$this->json_response(
				tutor_utils()->error_message( 'nonce' ),
				null,
				HttpHelper::STATUS_BAD_REQUEST
			);
		}

$data = $this->get_allowed_fields( $_POST );

$user_id         = get_current_user_id();
		$data['user_id'] = $user_id;

$validation = $this->validate( $data );
		if ( ! $validation->success ) {
			$this->json_response(
				__( 'Invalid inputs', 'tutor' ),
				$validation->errors,
				HttpHelper::STATUS_UNPROCESSABLE_ENTITY
			);
		}

$billing_info = $this->get_billing_info();

if ( $billing_info ) {
			$response = $this->model->update( $data, array( 'user_id' => $user_id ) );
		} else {
			$response = $this->model->insert( $data );
		}

if ( ! $response ) {
			$this->json_response(
				__( 'Failed to save billing info', 'tutor' ),
				null,
				HttpHelper::STATUS_INTERNAL_SERVER_ERROR
			);
		}

$this->json_response( __( 'Billing info saved successfully', 'tutor' ) );
	}

/**
	 * Get billing information for the current user.
	 *
	 * @since 3.0.0
	 *
	 * @param int $user_id User id.
	 *
	 * @return mixed The user's billing information.
	 */
	public function get_billing_info( $user_id = 0 ) {
		$user_id = tutor_utils()->get_user_id( $user_id );
		return $this->model->get_info( $user_id );
	}

/**
	 * Validate input data based on predefined rules.
	 *
	 * This protected method validates the provided data array against a set of
	 * predefined validation rules. The rules specify that 'order_id' is required
	 * and must be numeric. The method will skip validation rules for fields that
	 * are not present in the data array.
	 *
	 * @since 3.0.0
	 *
	 * @param array $data The data array to validate.
	 *
	 * @return object The validation result. It returns validation object.
	 */
	protected function validate( array $data ) {

$validation_rules = array(
			'user_id'    => 'required|numeric',
			'first_name' => 'required',
			'last_name'  => 'required',
			'email'      => 'required|email',
			'phone'      => 'required',
			'zip_code'   => 'required',
			'address'    => 'required',
			'country'    => 'required',
			'state'      => 'required',
			'city'       => 'required',
		);

// Skip validation rules for not available fields in data.
		foreach ( $validation_rules as $key => $value ) {
			if ( ! array_key_exists( $key, $data ) ) {
				unset( $validation_rules[ $key ] );
			}
		}

return ValidationHelper::validate( $validation_rules, $data );
	}
}