<?php
declare(strict_types=1);

// A command-line script: under a web server it does nothing (#427).
if (PHP_SAPI !== 'cli') {
    exit(1);
}

/**
 * Demo copies and demo material (#428): the list of offered files, the copies a guest picks from,
 * and that a demo copy counts as a use of a file. Plain PHP like releases.test.php; CI runs it with
 * `php tests/php/demos.test.php` and reads the last line.
 */

require __DIR__ . '/../../api/lib/AtomicFile.php';
require __DIR__ . '/../../api/lib/DemoFiles.php';
require __DIR__ . '/../../api/lib/FileUsage.php';
require __DIR__ . '/../../api/lib/ReleaseStore.php';
require __DIR__ . '/../../api/lib/Store.php';

$failed = 0;
$passed = 0;

function check(string $name, bool $ok, mixed $got = null): void
{
    global $failed, $passed;
    if ($ok) {
        $passed++;
        echo "PASS  {$name}\n";
        return;
    }
    $failed++;
    echo "FAIL  {$name}", $got === null ? '' : ' — got ' . json_encode($got, JSON_UNESCAPED_UNICODE), "\n";
}

$data = sys_get_temp_dir() . '/feuerwerk-php-demos-' . bin2hex(random_bytes(4));
mkdir("{$data}/projects", 0775, true);

// --- DemoFiles -------------------------------------------------------------------------------------

$files = new DemoFiles("{$data}/demo-files.json");
$tree = 'a590cab0f8b7/' . str_repeat('1', 64) . '.png';
$song = 'a590cab0f8b7/' . str_repeat('2', 64) . '.ogg';
check('nothing is offered before an administrator offers it', $files->of('textures') === [] && !$files->has('textures', $tree));
check('offering a file says it changed something', $files->set('textures', $tree, true) === true);
check('and it is offered', $files->has('textures', $tree) && $files->of('textures') === [$tree]);
check('offering it again changes nothing', $files->set('textures', $tree, true) === false && $files->of('textures') === [$tree]);
$files->set('sounds', $song, true);
check('each kind has its own list', $files->of('sounds') === [$song] && !$files->has('sounds', $tree));
check('a new reader finds the same', (new DemoFiles("{$data}/demo-files.json"))->of('textures') === [$tree]);
check('the list is not for the web server', (fileperms("{$data}/demo-files.json") & 0o007) === 0);
check('taking the offer back', $files->set('textures', $tree, false) === true && $files->of('textures') === []);
check('leaves the other kinds', $files->of('sounds') === [$song]);
$threw = false;
try {
    $files->set('pixels', $tree, true);
} catch (InvalidArgumentException) {
    $threw = true;
}
check('a kind that cannot be offered is refused', $threw);

// --- Demo copies -----------------------------------------------------------------------------------

$demos = new ReleaseStore("{$data}/demos");
check('without demo copies the list is empty', $demos->list() === []);
$store = new Store("{$data}/projects", 'admin');
$platformer = $store->create('Platformer');
$empty = $store->create('Empty project');
$saved = $store->save($platformer['id'], 1, ['id' => $platformer['id'], 'name' => 'Platformer', 'assets' => [['id' => 'a', 'file' => $song]]]);
$first = $demos->publish($saved);
$demos->publish($empty);
$list = $demos->list();
check('the list names every copy, by name', array_column($list, 'name') === ['Empty project', 'Platformer'], $list);
check('with its token and when it was made', ReleaseStore::isValidToken($list[1]['token']) && $list[1]['publishedAt'] !== '', $list[1]);
check('and nothing of the project itself', !array_key_exists('project', $list[0]) && !array_key_exists('projectId', $list[0]));
check('the token loads the frozen copy', $demos->load($first['token'])['project']['assets'][0]['file'] === $song);

$store->save($platformer['id'], 2, ['id' => $platformer['id'], 'name' => 'Platformer', 'assets' => []]);
check('changing the project leaves the copy as it was', $demos->load($first['token'])['project']['assets'] !== []);
$again = $demos->publish($store->load($platformer['id']));
check('updating it keeps the token and takes the new stand', $again['token'] === $first['token'] && $demos->load($first['token'])['project']['assets'] === []);

// --- A demo copy uses its files --------------------------------------------------------------------

$store->save($platformer['id'], 3, ['id' => $platformer['id'], 'name' => 'Platformer', 'assets' => [['id' => 'a', 'file' => $song]]]);
$demos->publish($store->load($platformer['id']));
$store->save($platformer['id'], 4, ['id' => $platformer['id'], 'name' => 'Platformer', 'assets' => []]);
$uses = (new FileUsage($data))->of($song);
check('a file only the demo copy still names counts as used', count($uses) === 1 && $uses[0]['id'] === $platformer['id'], $uses);
check('and the refusal says so', str_contains(FileUsage::refusal($uses, 'admin', true), 'demo copies'));
$demos->takeDown($platformer['id']);
check('once the copy is gone, so is the use', (new FileUsage($data))->of($song) === []);

exec('rm -rf ' . escapeshellarg($data));

echo $failed === 0 ? "ALL PASSED – {$passed} checks\n" : "{$failed} FAILED, {$passed} passed\n";
exit($failed === 0 ? 0 : 1);