fix originalDatetime based on filename for immich assets (searching for signal- in this example)

gistfile1.txt

<?php

$uri = "https://immich.example.org/api";
$api_key = "<API_KEY_HERE>";

$request = function(string $method, string $endpoint, mixed $body = null, array $headers = []) use ($uri, $api_key) {

    $curl = curl_init($uri . $endpoint);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_HEADER, true);
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $method);
    
    switch ($method) {
        case 'HEAD':
            curl_setopt($curl, CURLOPT_NOBODY, true);
            break;
        case 'PUT':
        case 'POST':
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($body));
            $headers[] = 'Content-Type:application/json';
            break;
        default:
            break;

    }

    $headers[] = 'x-api-key: ' . $api_key;
    
    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
    $raw_response = curl_exec($curl);
    if ($raw_response === false) {
        $error = curl_error($curl);
        curl_close($curl);
        throw new \Exception($error);
    }
    $info = curl_getinfo($curl);
    curl_close($curl);

    
    $response_headers = [];
    foreach(array_filter(explode("\r\n", substr($raw_response, 0, $info['header_size']))) as $response_header) {
        if (str_starts_with($response_header, 'HTTP/')) {
            list($protocol, $status) = explode(' ', $response_header, 2);
            $response_headers['protocol'] = [$protocol];
            $response_headers['status'] = [trim($status)];
            continue;
        }

        list($header, $value) = explode(':', $response_header, 2);
        $response_headers[strtolower($header)] = array_map('trim', explode(';', $value ?? ''));
    };
    
    $response_body = substr($raw_response, $info['header_size']);
    
    if (isset($response_headers['status']) === false) {
        throw new \Exception(var_export($raw_response, true));
    }
    return [$response_headers['status'], json_decode($response_body)];
};

$signal_assets = $request('POST', '/search/metadata', ['originalFileName' => "signal-"])[1]->assets;

while ($signal_assets->nextPage !== null) {
    foreach ($signal_assets->items as $signal_asset) {
        if (property_exists($signal_asset, 'id') === false) {
            continue;
        }

        print $signal_asset->originalFileName . ": " . $signal_asset->fileCreatedAt;
        // signal-2023-02-19-15-08-31-693-1.jpg
        if (preg_match('/signal-(?<year>\d\d\d\d)-(?<month>\d\d)-(?<day>\d\d)-(?<hour>\d\d)-?(?<minutes>\d\d)-?(?<seconds>\d\d)/', $signal_asset->originalFileName, $matches) !== 1) {
            var_dump($signal_asset->originalFileName);
            exit;
        }
        
        $datetime = new DateTimeImmutable($matches['year'] . '-' . $matches['month'] . '-' . $matches['day'] . 'T' . $matches['hour'] . ':' . $matches['minutes'] . ':' . $matches['seconds'], new DateTimeZone('europe/amsterdam'));

        print ' --> ' . $datetime->format('Y-m-d\\TH:i:s.vp') . PHP_EOL;
        print $request('PUT', '/assets/' . $signal_asset->id, ['dateTimeOriginal' => $datetime->format('Y-m-d\\TH:i:s.vp')])[0][0] . PHP_EOL;
    }
    $signal_assets = $request('POST', '/search/metadata', ['originalFileName' => "signal-", "page" => $signal_assets->nextPage])[1]->assets;
}