<?php

declare(strict_types=1);

if (PHP_SAPI !== 'cli') {
    http_response_code(404);
    exit;
}

$createFolders = false;
$mailboxId = null;
foreach (array_slice($argv, 1) as $argument) {
    if ($argument === '--create-folders') {
        $createFolders = true;
    } elseif (str_starts_with($argument, '--mailbox=')) {
        $mailboxId = substr($argument, strlen('--mailbox='));
    } else {
        fwrite(STDERR, "Usage: php tools/test-imap.php [--mailbox=email-or-id] [--create-folders]\n");
        exit(1);
    }
}

require dirname(__DIR__, 3) . '/load.php';
try {
    $store = new \Box\Mod\Mailgateway\Settings($di);
    $mailboxes = $store->getAll();
    $id = $mailboxId;
    if ($id === null) {
        $id = isset($mailboxes['default']) ? 'default' : array_key_first($mailboxes);
    } elseif (str_contains($id, '@')) {
        $id = null;
        foreach ($mailboxes as $candidate => $mailbox) {
            if (strcasecmp($mailbox['mailbox'], $mailboxId) === 0) {
                $id = $candidate;
                break;
            }
        }
    }
    if ($id === null) {
        throw new \FOSSBilling\InformationException('Mailbox not found');
    }
    $settings = $store->get($id);
    printf("Checking %s at %s:%d using %s with certificate validation enabled...\n",
        $settings['mailbox'], $settings['host'], $settings['port'],
        $settings['encryption'] === 'ssl' ? 'implicit TLS' : 'STARTTLS');
    $result = (new \Box\Mod\Mailgateway\ImapConnectionTest())->test($settings, $createFolders);
    // A read-only check does not change the saved readiness state.
    if ($createFolders) {
        $store->recordTest($id, $settings, $result);
    }
    echo $result['connected'] ? "IMAP login succeeded.\n" : "IMAP login failed.\n";
    if ($result['connected']) {
        echo 'Native MOVE support: ', $result['move_supported'] === true ? 'available' : 'unavailable or unverified', PHP_EOL;
    }
    foreach ($result['folders'] as $folder) {
        printf("%s — %s\n", $folder['path'], $folder['error']
            ?? ($folder['created'] ? 'created' : ($folder['exists'] ? 'found' : 'MISSING')));
    }
    foreach ($result['errors'] as $error) {
        fwrite(STDERR, $error . PHP_EOL);
    }
    echo $createFolders ? "Folder setup finished. " : "Read-only check finished. ";
    echo "No messages were fetched, marked, moved, deleted, or imported.\n";
    exit($result['success'] ? 0 : ($result['connected'] && $result['move_supported'] === true ? 2 : 1));
} catch (\FOSSBilling\InformationException $error) {
    fwrite(STDERR, $error->getMessage() . PHP_EOL);
    exit(1);
} catch (\Throwable $error) {
    fwrite(STDERR, 'IMAP check could not complete (' . $error::class . "). Check the module configuration and tables.\n");
    exit(1);
}