audiofix_ror/audiofix_ror.module

<?php

const PARAGRAPH = 'audio';
const LINKFIELD = 'field_audio_link';
function isArchive(string $url): bool {
	$pos = strpos($url, "archive.org/");
	if($pos === FALSE) {
		return FALSE;
	}
	return TRUE;
}

function normalizeArchive(string $url) {
	//assume il link sia di archive
	if(strpos($url, "https://archive.org/download") !== FALSE) {
		return $url;
	}
	if(strpos($url, "https://archive.org/details") !== FALSE) {
		// aagh qui in teoria non c'e' nulla da fare a meno che non guardiamo sul sito
		return $url;
	}
	// https://ia123456.us.archive.org/30/items/Bucket/filename.ogg
	$parts = explode("/", $url);
	$bucket = $parts[count($parts)-2];
	$fname = $parts[count($parts)-1];
	return "https://archive.org/download/" . $bucket . "/" . $fname;
}

/*
 * Implements hook_ENTITY_TYPE_presave
 */
function audiofix_ror_paragraph_presave(Drupal\Core\Entity\EntityInterface $entity) {
    // per i paragraph, getType() === bundle(). 
    if($entity->bundle() !== PARAGRAPH) { // audio e' il nome del nostro paragraph type
        return;
    }
    // campi utili: field_audio_link e field_durata
    $link = $entity->get(LINKFIELD)->getValue();
    if(count($link) == 0) { return; }
    $link = $link[0]['uri'];
    if(is_string($link) && isArchive($link)) {
        $norm = normalizeArchive($link);
        if($norm !== $link) {
            \Drupal::logger('audiofix_ror')->notice('Aggiornato da :old a :new', array(":old" => $link, ":new" => $norm));
            $entity->set(LINKFIELD, $norm);
        }
    }
}