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if ( empty( $upgrade_id ) ) {

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return false;

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}

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$completed_upgrades = $this->get_completed_upgrades();

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return in_array( $upgrade_id, $completed_upgrades, true );

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}

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/**

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* Conditional function to see if there are upgrades available.

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* @return bool

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public function has_uncomplete_upgrades() {

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return (bool) count( $this->get_uncompleted_upgrades() );

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}

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/**

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* Returns array of uncompleted upgrades.

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* This doesn't return an upgrade if:

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* - It was previously complete.

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* - If any false values in the upgrades $rules array are found.

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* @return array

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public function get_uncompleted_upgrades() {

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$required_upgrades = $this->get_routines();

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foreach ( $required_upgrades as $upgrade_id => $upgrade ) {

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// If the upgrade has already completed or one of the rules failed remove it from the list.

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if ( $this->has_completed_upgrade( $upgrade_id ) || in_array( false, $upgrade['rules'], true ) ) {

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unset( $required_upgrades[ $upgrade_id ] );

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}

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}

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return $required_upgrades;

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}

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/**

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* Handles Ajax for processing a upgrade upgrade/que request.

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public function process_upgrade_request() {

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$upgrade_id = isset( $_REQUEST['upgrade_id'] ) ? sanitize_key( $_REQUEST['upgrade_id'] ) : false;

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if ( ! $upgrade_id && ! $this->has_uncomplete_upgrades() ) {

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wp_send_json_error(

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[

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'error' => __( 'A batch process ID must be present to continue.', 'popup-maker' ),

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]

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);

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}

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// Nonce.

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if ( ! check_ajax_referer( 'pum_upgrade_ajax_nonce', 'nonce' ) ) {

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wp_send_json_error(

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[

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'error' => __( 'You do not have permission to initiate this request. Contact an administrator for more information.', 'popup-maker' ),

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]

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);

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}

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if ( ! $upgrade_id ) {

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$upgrade_id = $this->get_current_upgrade_id();

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}

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$step = ! empty( $_REQUEST['step'] ) ? absint( $_REQUEST['step'] ) : 1;

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/**

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* Instantiate the upgrade class.

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* @var PUM_Interface_Batch_Process|PUM_Interface_Batch_PrefetchProcess $upgrade

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$upgrade = $this->get_upgrade( $upgrade_id, $step );

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if ( false === $upgrade ) {

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wp_send_json_error(

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[

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'error' => sprintf( __( '%s is an invalid batch process ID.', 'popup-maker' ), esc_html( $upgrade_id ) ),

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]

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);

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}

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/**

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* Garbage collect any old temporary data in the case step is 1.

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* Here to prevent case ajax passes step 1 without resetting process counts.

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$first_step = $step < 2;

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if ( $first_step ) {

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$upgrade->finish();

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}

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$using_prefetch = ( $upgrade instanceof PUM_Interface_Batch_PrefetchProcess );

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// Handle pre-fetching data.

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if ( $using_prefetch ) {

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// Initialize any data needed to process a step.

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$data = isset( $_REQUEST['form'] ) ? sanitize_key( $_REQUEST['form'] ) : [];

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$upgrade->init( $data );

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$upgrade->pre_fetch();

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}

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/** @var int|string|WP_Error $step */

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$step = $upgrade->process_step();

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if ( ! is_wp_error( $step ) ) {

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$response_data = [

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'step' => $step,

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'next' => null,

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];

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// Finish and set the status flag if done.

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if ( 'done' === $step ) {

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$response_data['done'] = true;

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$response_data['message'] = $upgrade->get_message( 'done' );

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// Once all calculations have finished, run cleanup.

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$upgrade->finish();

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// Set the upgrade complete.

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pum_set_upgrade_complete( $upgrade_id );

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if ( $this->has_uncomplete_upgrades() ) {

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// Since the other was complete return the next (now current) upgrade_id.

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$response_data['next'] = $this->get_current_upgrade_id();

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}

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} else {

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$response_data['done'] = false;

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$response_data['message'] = $first_step ? $upgrade->get_message( 'start' ) : '';

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$response_data['percentage'] = $upgrade->get_percentage_complete();

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}

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wp_send_json_success( $response_data );

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} else {

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wp_send_json_error( $step );

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}

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}

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/**

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* Returns the first key in the uncompleted upgrades.

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* @return string|null

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public function get_current_upgrade_id() {

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$upgrades = $this->get_uncompleted_upgrades();

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reset( $upgrades );

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return key( $upgrades );

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}

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/**

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* Returns the current upgrade.

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* @return bool|PUM_Interface_Batch_PrefetchProcess|PUM_Interface_Batch_Process

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public function get_current_upgrade() {

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$upgrade_id = $this->get_current_upgrade_id();

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return $this->get_upgrade( $upgrade_id );

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}

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/**

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* Gets the upgrade process object.

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* @param string $upgrade_id

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* @param int $step

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* @return bool|PUM_Interface_Batch_Process|PUM_Interface_Batch_PrefetchProcess

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public function get_upgrade( $upgrade_id = '', $step = 1 ) {

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$upgrade = $this->registry->get( $upgrade_id );

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if ( ! $upgrade ) {

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return false;

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}

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$class = isset( $upgrade['class'] ) ? sanitize_text_field( $upgrade['class'] ) : '';

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$class_file = isset( $upgrade['file'] ) ? $upgrade['file'] : '';

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if ( ! class_exists( $class ) && ! empty( $class_file ) && file_exists( $class_file ) ) {

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require_once $class_file;

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} else {

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wp_send_json_error(

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[

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'error' => sprintf( __( 'An invalid file path is registered for the %1$s batch process handler.', 'popup-maker' ), "<code>{$upgrade_id}</code>" ),

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]

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);

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}

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if ( empty( $class ) || ! class_exists( $class ) ) {

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wp_send_json_error(

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[

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'error' => sprintf( __( '%1$s is an invalid handler for the %2$s batch process. Please try again.', 'popup-maker' ), "<code>{$class}</code>", "<code>{$upgrade_id}</code>" ),

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]

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);

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}

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/**

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* @var PUM_Interface_Batch_Process|PUM_Interface_Batch_PrefetchProcess

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return new $class( $step );

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}

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/**

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* Add upgrades tab to tools page if there are upgrades available.

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* @param array $tabs

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* @return array

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public function tools_page_tabs( $tabs = [] ) {

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if ( $this->has_uncomplete_upgrades() ) {

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$tabs['upgrades'] = __( 'Upgrades', 'popup-maker' );

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}

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return $tabs;

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}

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/**

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* Renders upgrade form on the tools page upgrade tab.

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public function tools_page_tab_content() {

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if ( ! $this->has_uncomplete_upgrades() ) {

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_e( 'No upgrades currently required.', 'popup-maker' );

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return;

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}

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// Enqueue admin JS for the batch processor.

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wp_enqueue_script( 'pum-admin-batch' );

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wp_enqueue_style( 'pum-admin-batch' );

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$this->render_upgrade_notice();

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$this->render_form();

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}

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}

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