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<?php
/**
* Dynamic Checkout class
*
* @package Components\Checkouts
*/
class APP_Dynamic_Checkout{
/**
* The steps list object.
*
* @var APP_Relational_Checkout_List
*/
protected $steps;
/**
* The current step ID.
*
* @var bool|string
*/
protected $current_step = false;
/**
* The finished step flag.
*
* @var bool
*/
protected $step_finished = false;
/**
* The cancelled step flag.
*
* @var bool
*/
protected $step_cancelled = false;
/**
* The checkout hash.
*
* @var string
*/
protected $hash;
/**
* The Order ID.
*
* @var int
*/
protected $order_id;
/**
* The current checkout type
*
* @var string
*/
protected $checkout_type;
/**
* Setups checkout.
*
* @param string $checkout_type Checkout type.
* @param string $hash Optional. Checkout hash.
*
* @return void
*/
public function __construct( $checkout_type, $hash = '' ) {
$this->hash = substr( $hash, 0, 20 );
$this->checkout_type = substr( $checkout_type, 0, 25 );
if ( empty( $this->hash ) ) {
$this->hash = substr( sha1( time() . mt_rand( 0, 1000 ) ), 0, 20 );
$this->set_expiration();
$this->add_data( 'checkout_type', $this->checkout_type );
}
$this->steps = new APP_Relational_Checkout_List;
}
public function add_step( $id, $process, $display ){
$this->steps->add( $id, array( $process, $display ) );
}
public function add_step_before( $ref_id, $id, $process, $display ){
$this->steps->add_before( $ref_id, $id, array( $process, $display ) );
}
public function add_step_after( $ref_id, $id, $process, $display ){
$this->steps->add_after( $ref_id, $id, array( $process, $display ) );
}
public function unregister_step( $id ){
$this->steps->remove( $id );
}
public function display_step( $id ){
return $this->call_step( $id, 'display' );
}
public function process_step( $id ){
return $this->call_step( $id, 'process' );
}
/**
* Sets expiration for a checkout data.
*
* When expiration will set all further calls of add_data() method will use
* this expiration value, until new expiration value will be set.
*
* This allows to dynamically control the checkout expiration on a different
* steps. Since different steps have a different time limit on passing them.
*
* @param int $expiration Optional. Time until expiration in seconds.
* Default 86400 (1 day). 0 - no expiration.
*/
public function set_expiration( $expiration = DAY_IN_SECONDS ) {
$data = $this->get_data();
if ( ! $data ) {
$data = array();
}
$data['expiration'] = (int) $expiration;
set_transient( $this->get_transient_key(), $data, $expiration );
// Do not autoload option and make transient unexpirable.
if ( ! $expiration ) {
delete_option( '_transient_timeout_' . $this->get_transient_key() );
}
}
/**
* Completes the checkout after all steps finished.
*
* Checkout data will be preserved for a one day and then finally deleted.
*/
public function complete_checkout() {
do_action( 'appthemes_checkout_completed', $this );
// Keep completed checkout data for a one day.
$this->set_expiration( DAY_IN_SECONDS );
}
protected function call_step( $id, $type = 'display' ){
$id = apply_filters( 'appthemes_checkout_call_step', $id );
$this->current_step = $id;
if ( $this->steps->is_empty() ) {
return false;
}
if ( ! $this->steps->contains( $id ) ) {
return false;
}
$callbacks = $this->steps->get( $this->current_step );
$callback = $callbacks['payload'][ ( $type == 'display' ) ? 1 : 0 ];
$order_id = $this->get_data( 'order_id' );
if ( ! $order_id ) {
$order = new APP_Draft_Order;
} else {
$order = appthemes_get_order( $order_id );
}
if ( is_callable( $callback ) ) {
call_user_func( $callback, $order, $this );
} else if ( is_string( $callback ) ) {
locate_template( $callback, true );
} else {
return false;
}
if ( $order instanceof APP_Draft_Order && $order->is_modified() ) {
$new_order = APP_Order_Factory::duplicate( $order );
if ( ! $new_order ) {
return false;
}
$this->add_data( 'order_id', $new_order->get_id() );
// save checkout type & hash in order
update_post_meta( $new_order->get_id(), 'checkout_type', $this->checkout_type );
update_post_meta( $new_order->get_id(), 'checkout_hash', $this->hash );
// save complete and cancel urls in order
if ( $complete_url = $this->get_data( 'complete_url' ) ) {
update_post_meta( $new_order->get_id(), 'complete_url', $complete_url );
}
if ( $cancel_url = $this->get_data( 'cancel_url' ) ) {
update_post_meta( $new_order->get_id(), 'cancel_url', $cancel_url );
}
}
if ( $this->step_cancelled ) {
$this->redirect( appthemes_get_step_url( $this->get_previous_step( $id ) ) );
appthemes_exit( "cancel_step_{$this->current_step}" );
}
if ( $this->step_finished ) {
$next_step = $this->get_next_step( $id );
if ( $this->current_step === $next_step ) {
$this->complete_checkout();
} else {
$this->redirect( appthemes_get_step_url( $next_step ) );
appthemes_exit( "finish_step_{$this->current_step}" );
}
}
$this->current_step = false;
return true;
}
/**
* Returns current checkout step.
*
* @return string|bool
*/
public function get_current_step() {
return $this->current_step;
}
/**
* Returns next checkout step.
*
* @param string $id (optional)
*
* @return string|bool
*/
public function get_next_step( $id = '' ) {
if ( $this->steps->is_empty() ) {
return false;
}
if ( empty( $id ) ) {
return $this->steps->get_first_key();
} else {
return $this->steps->get_key_after( $id );
}
}
/**
* Returns previous checkout step.
*
* @param string $id (optional)
*
* @return string|bool
*/
public function get_previous_step( $id = '' ) {
if ( $this->steps->is_empty() ) {
return false;
}
if ( empty( $id ) ) {
return $this->steps->get_first_key();
} else {
return $this->steps->get_key_before( $id );
}
}
/**
* Mark current step as finished.
*
* @return void
*/
public function finish_step() {
$this->step_finished = true;
}
/**
* Mark current step as cancelled.
*
* @return void
*/
public function cancel_step() {
$this->step_cancelled = true;
}
/**
* Stores given data in checkout.
*
* @param string $key Data key.
* @param mixed $value Data value.
* @return void
*/
public function add_data( $key, $value ) {
$data = $this->get_data();
if ( ! $data ) {
$data = array();
}
$expiration = ( isset( $data['expiration'] ) ) ? $data['expiration'] : DAY_IN_SECONDS;
$data[ $key ] = $value;
set_transient( $this->get_transient_key(), $data, $expiration );
}
/**
* Returns data from checkout for given key.
*
* @param string $key (optional)
*
* @return mixed
*/
public function get_data( $key = '' ) {
$data = get_transient( $this->get_transient_key() );
if ( false === $data ) {
$data = $this->get_data_from_order();
}
if ( empty( $key ) ) {
return $data;
} else if ( isset( $data[ $key ] ) ) {
return $data[ $key ];
} else {
return false;
}
}
/**
* Returns a basic checkout data from order.
*
* @return array|bool
*/
protected function get_data_from_order() {
$orders = new WP_Query( array(
'author' => get_current_user_id(),
'post_type' => APPTHEMES_ORDER_PTYPE,
'post_status' => 'any',
'posts_per_page' => 1,
'suppress_filters' => true,
'no_found_rows' => true,
'meta_query' => array(
'relation' => 'AND',
array(
'key' => 'checkout_type',
'value' => $this->checkout_type,
'compare' => '=',
),
array(
'key' => 'checkout_hash',
'value' => $this->hash,
'type' => '=',
),
),
) );
if ( empty( $orders->posts ) ) {
return false;
}
$data = array(
'order_id' => $orders->posts[0]->ID,
'checkout_type' => $this->checkout_type,
);
return $data;
}
/**
* Checks if checkout is valid, and has been setup.
*
* @return bool
*/
public function verify_hash() {
$checkout_type = $this->get_data( 'checkout_type' );
if ( $this->checkout_type != $checkout_type ) {
return false;
} else {
return true;
}
}
/**
* Redirects user to given url.
*
* @param string $url
*
* @return void
*/
public function redirect( $url ) {
if ( did_action( 'wp_head' ) ) {
echo html( 'a', array( 'href' => esc_url( $url ) ), __( 'Continue', APP_TD ) );
echo html( 'script', 'location.href="' . esc_url( $url ) . '"' );
} else {
$url = esc_url_raw( $url );
wp_redirect( $url );
}
}
/**
* Returns a transient key.
*
* @return string
*/
protected function get_transient_key() {
$user_key = is_user_logged_in() ? get_current_user_id() : appthemes_get_ip();
$user_key = str_replace( '.', '_', $user_key );
return $this->checkout_type . '_' . $this->hash . '_' . $user_key;
}
/**
* Returns a checkout hash.
*
* @return string
*/
public function get_hash() {
return $this->hash;
}
/**
* Returns a checkout type.
*
* @return string
*/
public function get_checkout_type() {
return $this->checkout_type;
}
/**
* Returns an array of steps.
*
* @return array
*/
public function get_steps() {
return $this->steps->get_all();
}
/**
* Returns a number of steps.
*
* @return int
*/
public function get_steps_count() {
return count( $this->steps->get_all() );
}
}