<?php

// common functions for Standard and Cloud plugins

// TODO: ajaxify one-click actions

// TODO: implement final phase of webp - forced webp with cdn url matching

// TODO: add pdf optimization via cloud-only

define( 'EWWW_IMAGE_OPTIMIZER_VERSION', '262.0' );

// initialize a couple globals

$ewww_debug = '';

$ewww_defer = true;

$disabled = ini_get( 'disable_functions' );

if ( ! preg_match( '/get_current_user/', $disabled ) ) {

ewwwio_debug_message( get_current_user() );

}

ewwwio_debug_message( 'EWWW IO version: ' . EWWW_IMAGE_OPTIMIZER_VERSION );

// check the WP version

global $wp_version;

$my_version = substr( $wp_version, 0, 3 );

ewwwio_debug_message( "WP version: $wp_version" );

// check the PHP version

if ( ! defined( 'PHP_VERSION_ID' ) ) {

$php_version = explode( '.', PHP_VERSION );

define( 'PHP_VERSION_ID', ( $version[0] * 10000 + $version[1] * 100 + $version[2] ) );

}

if ( defined( 'PHP_VERSION_ID' ) ) {

ewwwio_debug_message( 'PHP version: ' . PHP_VERSION_ID );

}

if ( WP_DEBUG ) {

$ewww_memory = 'plugin load: ' . memory_get_usage( true ) . "\n";

}

// setup custom $wpdb attribute for our image-tracking table

global $wpdb;

if ( ! isset( $wpdb->ewwwio_images ) ) {

$wpdb->ewwwio_images = $wpdb->prefix . "ewwwio_images";

}

//add_action( 'contextual_help', 'wptuts_screen_help', 10, 3 );

function wptuts_screen_help( $contextual_help, $screen_id, $screen ) {

}

/**

* Hooks

*/

if ( ! ewww_image_optimizer_get_option( 'ewww_image_optimizer_noauto' ) ) {

// used to move the W3TC CDN uploads filter

add_filter( 'wp_handle_upload', 'ewww_image_optimizer_handle_upload' );

// used to turn off ewwwio_image_editor during uploads

add_action( 'add_attachment', 'ewww_image_optimizer_add_attachment' );

add_filter( 'wp_image_editors', 'ewww_image_optimizer_load_editor', 60 );

add_filter( 'wp_generate_attachment_metadata', 'ewww_image_optimizer_resize_from_meta_data', 15, 2 );

}

// this filter turns off ewwwio_image_editor during save from the actual image editor

// and ensures that we parse the resizes list during the image editor save function

add_filter( 'load_image_to_edit_path', 'ewww_image_optimizer_editor_save_pre' );

// this hook is used to ensure we populate the metadata with webp images

add_filter( 'wp_update_attachment_metadata', 'ewww_image_optimizer_update_attachment_metadata', 8, 2 );

add_filter( 'manage_media_columns', 'ewww_image_optimizer_columns' );

// filters to set default permissions, anyone can override these if they wish

add_filter( 'ewww_image_optimizer_manual_permissions', 'ewww_image_optimizer_manual_permissions', 8 );

add_filter( 'ewww_image_optimizer_bulk_permissions', 'ewww_image_optimizer_admin_permissions', 8 );

add_filter( 'ewww_image_optimizer_admin_permissions', 'ewww_image_optimizer_admin_permissions', 8 );

add_filter( 'ewww_image_optimizer_superadmin_permissions', 'ewww_image_optimizer_superadmin_permissions', 8 );

// variable for plugin settings link

$plugin = plugin_basename ( EWWW_IMAGE_OPTIMIZER_PLUGIN_FILE );

add_filter( "plugin_action_links_$plugin", 'ewww_image_optimizer_settings_link' );

add_filter( 'intermediate_image_sizes_advanced', 'ewww_image_optimizer_image_sizes_advanced' );

add_filter( 'ewww_image_optimizer_settings', 'ewww_image_optimizer_filter_settings_page' );

add_filter( 'myarcade_filter_screenshot', 'ewww_image_optimizer_myarcade_thumbnail' );

add_filter( 'myarcade_filter_thumbnail', 'ewww_image_optimizer_myarcade_thumbnail' );

add_action( 'manage_media_custom_column', 'ewww_image_optimizer_custom_column', 10, 2 );

add_action( 'plugins_loaded', 'ewww_image_optimizer_preinit' );

add_action( 'init', 'ewww_image_optimizer_gallery_support' );

add_action( 'admin_init', 'ewww_image_optimizer_admin_init' );

add_action( 'admin_action_ewww_image_optimizer_manual_optimize', 'ewww_image_optimizer_manual' );

add_action( 'admin_action_ewww_image_optimizer_manual_restore', 'ewww_image_optimizer_manual' );

add_action( 'admin_action_ewww_image_optimizer_manual_convert', 'ewww_image_optimizer_manual' );

add_action( 'delete_attachment', 'ewww_image_optimizer_delete' );

add_action( 'admin_menu', 'ewww_image_optimizer_admin_menu', 60 );

add_action( 'network_admin_menu', 'ewww_image_optimizer_network_admin_menu' );

add_action( 'load-upload.php', 'ewww_image_optimizer_load_admin_js' );

add_action( 'admin_action_bulk_optimize', 'ewww_image_optimizer_bulk_action_handler' );

add_action( 'admin_action_-1', 'ewww_image_optimizer_bulk_action_handler' );

add_action( 'admin_enqueue_scripts', 'ewww_image_optimizer_media_scripts' );

add_action( 'admin_enqueue_scripts', 'ewww_image_optimizer_settings_script' );

add_action( 'ewww_image_optimizer_auto', 'ewww_image_optimizer_auto' );

add_action( 'ewww_image_optimizer_defer', 'ewww_image_optimizer_defer' );

add_action( 'wr2x_retina_file_added', 'ewww_image_optimizer_retina', 20, 2 );

add_action( 'wp_ajax_ewww_webp_rewrite', 'ewww_image_optimizer_webp_rewrite' );

register_deactivation_hook( EWWW_IMAGE_OPTIMIZER_PLUGIN_FILE, 'ewww_image_optimizer_network_deactivate' );

//add_action( 'shutdown', 'ewwwio_memory_output' );

if ( ewww_image_optimizer_get_option( 'ewww_image_optimizer_webp_for_cdn' ) ) {

add_action( 'init', 'ewww_image_optimizer_buffer_start' );

if ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) {

add_action( 'wp_enqueue_scripts', 'ewww_image_optimizer_webp_debug_script' );

} else {

add_action( 'wp_enqueue_scripts', 'ewww_image_optimizer_webp_load_jquery' );

add_action( 'wp_print_footer_scripts', 'ewww_image_optimizer_webp_inline_script' );

}

}

if ( defined( 'WP_CLI' ) && WP_CLI ) {

require_once( EWWW_IMAGE_OPTIMIZER_PLUGIN_PATH . 'iocli.php' );

}

function ewww_image_optimizer_get_plugin_version( $plugin_file ) {

}

// functions to capture all page output, replace image urls with webp derivatives, and add webp fallback

function ewww_image_optimizer_buffer_start() {

//ewwwio_debug_message( '<b>' . __FUNCTION__ . '()</b>' );

ob_start( 'ewww_image_optimizer_filter_page_output' );

}

function ewww_image_optimizer_buffer_end() {

//ewwwio_debug_message( '<b>' . __FUNCTION__ . '()</b>' );

ob_end_flush();

}

function ewww_image_optimizer_filter_page_output( $buffer, $admin_bypass ) {

}

// set permissions for various operations

function ewww_image_optimizer_manual_permissions( $permissions ) {

}

function ewww_image_optimizer_admin_permissions( $permissions ) {

}

function ewww_image_optimizer_superadmin_permissions( $permissions ) {

}

function ewwwio_memory( $function ) {

}

// function to check if set_time_limit() is disabled

function ewww_image_optimizer_stl_check() {

}

function ewww_image_optimizer_preinit() {

//ewwwio_debug_message( '<b>' . __FUNCTION__ . '()</b>' );

load_plugin_textdomain( EWWW_IMAGE_OPTIMIZER_DOMAIN, false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );

}

function ewww_image_optimizer_gallery_support() {

}

/**

* Plugin initialization function

*/

function ewww_image_optimizer_init() {

}

// Plugin initialization for admin area

function ewww_image_optimizer_admin_init() {

}

// setup wp_cron tasks for scheduled and deferred optimization

function ewww_image_optimizer_cron_setup( $event ) {

}

// sets all the tool constants to false

function ewww_image_optimizer_disable_tools() {

}

// generates css include for progressbars to match admin style

function ewww_image_optimizer_progressbar_style() {

wp_add_inline_style( 'jquery-ui-progressbar', ".ui-widget-header { background-color: " . ewww_image_optimizer_admin_background() . "; }" );

ewwwio_memory( __FUNCTION__ );

}

// determines the background color to use based on the selected theme

function ewww_image_optimizer_admin_background() {

}

// tells WP to ignore the 'large network' detection by filtering the results of wp_is_large_network()

function ewww_image_optimizer_large_network() {

return false;

}

// adds table to db for storing status of auxiliary images that have been optimized

function ewww_image_optimizer_install_table() {

}

// lets the user know their network settings have been saved

function ewww_image_optimizer_network_settings_saved() {

ewwwio_debug_message( '<b>' . __FUNCTION__ . '()</b>' );

echo "<div id='ewww-image-optimizer-settings-saved' class='updated fade'><p><strong>" . esc_html__('Settings saved', EWWW_IMAGE_OPTIMIZER_DOMAIN) . ".</strong></p></div>";

}

// load the class to extend WP_Image_Editor

function ewww_image_optimizer_load_editor( $editors ) {

}

// register the filter that will remove the image_editor hooks when an attachment is added

function ewww_image_optimizer_add_attachment() {

ewwwio_debug_message( '<b>' . __FUNCTION__ . '()</b>' );

add_filter( 'intermediate_image_sizes_advanced', 'ewww_image_optimizer_image_sizes', 200 );

}

// remove the image editor filter, and add a new filter that will restore it later

function ewww_image_optimizer_image_sizes( $sizes ) {

}

// restore the image editor filter after the resizes have completed

function ewww_image_optimizer_restore_editor_hooks( $metadata ) {

}

// when an image has been edited, remove the image editor filter, and add a new filter that will restore it later

function ewww_image_optimizer_editor_save_pre( $image ) {

}

// filter the image sizes generated by Wordpress, themes, and plugins allowing users to disable specific sizes

function ewww_image_optimizer_image_sizes_advanced( $sizes ) {

}

// during an upload, remove the W3TC CDN filter and add a new filter with our own wrapper around the W3TC function

function ewww_image_optimizer_handle_upload( $params ) {

}

// this is the delayed wrapper for the W3TC CDN function that runs after optimization (priority 20)

function ewww_image_optimizer_update_attached_file_w3tc( $meta, $id ) {

}

function ewww_image_optimizer_w3tc_update_files( $files ) {

}

function ewww_image_optimizer_upload_info() {

}

// runs scheduled optimization of various auxiliary images

function ewww_image_optimizer_auto() {

}

// optimizes the images that have been deferred for later processing

function ewww_image_optimizer_defer() {