foto-portfolio/config/config.sample.php

<?php
/**
 * Site configuration. Copy this file to config.php and fill in your values.
 * config.php is never committed to git and never rewritten by the application.
 */
return [
    // ---- Site -------------------------------------------------------------
    'site' => [
        'name'     => 'Jane Doe Photography',
        // Base URL of the public site, no trailing slash. Used for links in
        // shared gallery URLs. Example: 'https://www.example.com'
        'base_url' => 'https://www.example.com',
        // IANA timezone used for gallery expiry checks.
        'timezone' => 'Europe/Berlin',
    ],

    // ---- Hetzner Object Storage (S3-compatible) ---------------------------
    // Create the bucket in the Hetzner console, keep it PRIVATE.
    // Endpoint depends on the location, e.g. fsn1/nbg1/hel1.
    's3' => [
        'endpoint'   => 'https://fsn1.your-objectstorage.com',
        'region'     => 'fsn1',
        'bucket'     => 'my-photo-galleries',
        'access_key' => 'CHANGE_ME',
        'secret_key' => 'CHANGE_ME',
        // Bucket addressing. true → https://<endpoint-host>/<bucket>/<key>
        // (path-style, recommended for Hetzner). false → virtual-hosted-style
        // https://<bucket>.<endpoint-host>/<key>, which needs the bucket to
        // resolve as a TLS subdomain of the endpoint.
        'path_style' => true,
        // Key prefix under which gallery objects are stored:
        // <prefix>/<slug>/originals/... and .../thumbs/... Set to '' to store
        // galleries at the bucket root.
        'prefix'     => 'galleries',
        // Lifetime of presigned GET URLs (seconds). Gallery pages embed these;
        // after expiry the browser must reload the page for fresh URLs.
        'url_ttl'    => 3600,
    ],

    // ---- Uploads ----------------------------------------------------------
    'uploads' => [
        // Longest edge of the client-side generated grid thumbnails (px).
        // Originals are never touched.
        'thumb_size'    => 600,
        // JPEG quality for thumbnails (0.0 - 1.0, used by the browser canvas).
        'thumb_quality' => 0.8,
        // JPEG quality for downscaled originals (0.0 - 1.0). Only applies to
        // galleries that set a resolution cap; "Original" galleries are never
        // re-encoded.
        'resize_quality' => 0.9,
        // How many images the browser uploads at once. Each one holds a PHP
        // worker on the webhost for its whole S3 round trip, so keep this
        // below the host's per-site process limit. 1 restores serial uploads.
        'concurrency'   => 3,
    ],

    // ---- Download-all archives --------------------------------------------
    // A gallery with downloads enabled gets one ZIP built into S3 and rebuilt
    // whenever its images change. The build is split into slices so that no
    // request ever approaches the host's max_execution_time, which on shared
    // hosting is typically 60 s and cannot be raised.
    'archive' => [
        // Seconds of work per request. Must stay comfortably below
        // max_execution_time: a slice stops starting new photos at this point,
        // but the one already running still has to finish.
        'step_seconds'   => 25,
        // How long a gallery must go unchanged before its archive is rebuilt.
        // Guests uploading over an hour should trigger one rebuild, not thirty.
        'settle_seconds' => 300,
        // Bytes buffered before they are sent as one multipart part. S3 rejects
        // parts under 5 MB (the final part excepted), so do not lower this.
        'part_min_bytes' => 5 * 1024 * 1024,
        // A build with no progress for this long is assumed dead: its multipart
        // upload is aborted (S3 bills for the parts) and it restarts.
        'abandon_hours'  => 24,
        // Safety net on the self-dispatching background worker chain. A normal
        // build is a few dozen links long.
        'max_chain'      => 500,
    ],
];