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<?php

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// Ajax called handled just below

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add_action( 'wp_ajax_ninja_forms_sendwp_remote_install', 'wp_ajax_ninja_forms_sendwp_remote_install_handler' );

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function wp_ajax_ninja_forms_sendwp_remote_install_handler () {

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if (!current_user_can('manage_options') || ! isset($_REQUEST['nonce']) || ! wp_verify_nonce( $_REQUEST['nonce'] , 'ninja_forms_sendwp_remote_install') ) {

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ob_end_clean();

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echo json_encode( array( 'error' => esc_html__( 'Something went wrong. SendWP was not installed correctly.', 'ninja-forms') ) );

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exit;

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}

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$all_plugins = get_plugins();

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$is_sendwp_installed = false;

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foreach(get_plugins() as $path => $details ) {

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if(false === strpos($path, '/sendwp.php')) continue;

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$is_sendwp_installed = true;

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activate_plugin( $path );

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break;

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}

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if( ! $is_sendwp_installed ) {

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$plugin_slug = 'sendwp';

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include_once ABSPATH . 'wp-admin/includes/plugin-install.php';

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include_once ABSPATH . 'wp-admin/includes/file.php';

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include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';

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* Use the WordPress Plugins API to get the plugin download link.

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$api = plugins_api( 'plugin_information', array(

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'slug' => $plugin_slug,

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) );

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if ( is_wp_error( $api ) ) {

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ob_end_clean();

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echo json_encode( array( 'error' => $api->get_error_message(), 'debug' => $api ) );

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exit;

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}

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* Use the AJAX Upgrader skin to quietly install the plugin.

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$upgrader = new Plugin_Upgrader( new WP_Ajax_Upgrader_Skin() );

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$install = $upgrader->install( $api->download_link );

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if ( is_wp_error( $install ) ) {

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ob_end_clean();

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echo json_encode( array( 'error' => $install->get_error_message(), 'debug' => $api ) );

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exit;

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}

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* Activate the plugin based on the results of the upgrader.

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* @NOTE Assume this works, if the download works - otherwise there is a false positive if the plugin is already installed.

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$activated = activate_plugin( $upgrader->plugin_info() );

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}

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* Final check to see if SendWP is available.

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if( ! function_exists('sendwp_get_server_url') ) {

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ob_end_clean();

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echo json_encode( array(

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'error' => esc_html__( 'Something went wrong. SendWP was not installed correctly.' ),

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'install' => $install,

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) );

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exit;

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}

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echo json_encode( array(

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'partner_id' => 16,

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'register_url' => esc_url(sendwp_get_server_url() . '_/signup'),

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'client_name' => esc_attr( sendwp_get_client_name() ),

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'client_secret' => esc_attr( sendwp_get_client_secret() ),

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'client_redirect' => esc_url(sendwp_get_client_redirect()),

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'client_url' => esc_url( sendwp_get_client_url() ),

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) );

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exit;

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}

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