Plugin Name: Pull Images to WP Media Library
Description: This plugin will pull all inline images from post content to WP Media Library on post save.
Version: 1.0
Author: Rhythm Shahriar <[email protected]>
License: MIT

**This plugin will only work when you are using CMP as your publishing service.

PLUGIN SETUP

1. Download the repo as zip
2. Go to Plugins > Add New > Upload Plugin
3. Activate Plugin

REQUIREMENTS

Since uploading images are the synchronous process you might have to increase resource limits in php.ini but preferable limits are according to your usages blow limits are just

upload_max_filesize = 100M
post_max_size = 100M
max_execution_time = 300

WHITELIST DOMAIN(S)

This plugin will pull images from only whitelisted domains (LINE:22)

$domain_whitelist = [
    'images-cdn.newscred.com',
    'images1.newscred.com',
    'images2.newscred.com',
    'images3.newscred.com',
    'images4.newscred.com',
];

BLACKLIST DOMAIN(S)

If you want to ignore any domain from being pulled, update the domain_whitelist array (LINE:33)

$domain_blacklist = [
    preg_replace( "(^https?://)", "", get_home_url() ),
];

WORK PROCESS

• For this use case, there are two possible actions: you are creating a new post or you are updating the post.
• If you are creating a new post, this will pull all the inline images from img src and create store those in the WordPress media library. After that, it will create a new custom field, nc-cmp-ml-images, and save a JSON of CMP & WP URL mapping so that we can track or reuse in future rater pull the same images multiple times.
• If you are updating the post, it will first check if there is any custom field nc-cmp-ml-images to find out if the image(s) is/are already pulled. If there any match found, then instead of re-pull the images, this plugin will reuse those previous uploads. (To keep the Media Library clean) and will pull only new images for that post.

CHANGES

For custom post type if you are facing any issue, you can try with this hook https://developer.wordpress.org/reference/hooks/save_post_post-post_type/

save_post_{$post->post_type}