<?php
declare(strict_types=1);

$bootstrapTried = false;
$bootstrapLoaded = false;
$bootstrapCandidates = [__DIR__ . '/config.php'];
$envHint = getenv('APP_ENV') ?: (getenv('APP_ENV_FILE') ?: null);
if ($envHint) {
    $bootstrapCandidates[] = __DIR__ . '/' . $envHint . '/config.php';
}
$bootstrapCandidates[] = __DIR__ . '/staging/config.php';
$bootstrapCandidates[] = __DIR__ . '/prod/config.php';
foreach ($bootstrapCandidates as $bootstrapConfig) {
    if ($bootstrapConfig && is_file($bootstrapConfig)) {
        $bootstrapTried = true;
        require_once $bootstrapConfig;
        $bootstrapLoaded = true;
        break;
    }
}
if (!$bootstrapLoaded) {
    throw new RuntimeException('No environment config found in config/ or its subdirectories.');
}

$overrides = $GLOBALS['EMAILTEMPLATE_OVERRIDES'] ?? [];

$env = (string)($overrides['env'] ?? (defined('APP_ENV') ? APP_ENV : (getenv('APP_ENV') ?: 'local')));
$baseUrl = (string)($overrides['base_url'] ?? (defined('APP_URL_PRIMARY') ? APP_URL_PRIMARY : (getenv('APP_BASE_URL') ?: '')));
$cookieDomainDefault = (string)($overrides['cookie_domain'] ?? ($overrides['auth']['cookie_domain'] ?? (defined('APP_COOKIE_DOMAIN') ? APP_COOKIE_DOMAIN : (defined('APP_DOMAIN_PRIMARY') ? '.' . APP_DOMAIN_PRIMARY : ''))));
$sessionNameDefault = (string)($overrides['session_name'] ?? ($overrides['auth']['session_name'] ?? (defined('APP_COOKIE_PREFIX') ? APP_COOKIE_PREFIX . 'session' : 'et_session')));

$projectDbDefaults = [
    'db_host'    => getenv('DB_HOST') ?: getenv('DB_TPL_HOST') ?: 'localhost',
    'db_name'    => getenv('DB_NAME') ?: getenv('DB_TPL_NAME') ?: 'd044ae9e',
    'db_user'    => getenv('DB_USER') ?: getenv('DB_TPL_USER') ?: 'd044ae9e',
    'db_pass'    => getenv('DB_PASS') ?: getenv('DB_TPL_PASS') ?: '9BVUn)Töcü@ÖVÜfgO8!J',
    'db_charset' => getenv('DB_CHARSET') ?: 'utf8mb4',
    'db_port'    => (int)(getenv('DB_PORT') ?: 3306),
    'prefix'     => defined('APP_PREFIX') ? APP_PREFIX . '_' : 'emailtemplate_',
];

$legacyOverrides = [];
if (isset($overrides['project'])) {
    $legacyOverrides = $overrides['project'];
} elseif (isset($overrides['templates'])) {
    $legacyOverrides = $overrides['templates'];
}
$projectDb = array_replace($projectDbDefaults, $legacyOverrides, $overrides['projectdb'] ?? $overrides['dbsettings'] ?? []);

$cors = $overrides['cors'] ?? (getenv('CORS_ORIGIN') ?: '*');

$authDefaults = [
    'session_name'    => $sessionNameDefault,
    'cookie_domain'   => $cookieDomainDefault,
    'cookie_secure'   => $env === 'prod',
    'cookie_httponly' => true,
    'cookie_samesite' => 'Lax',
    'cookie' => [
        'domain'   => $cookieDomainDefault,
        'secure'   => $env === 'prod',
        'httponly' => true,
        'samesite' => 'Lax',
    ],
    'db' => [
        'table'         => 'customer_users',
        'col_user'      => 'email',
        'col_pass'      => 'password_hash',
        'col_name'      => 'name',
        'col_id'        => 'id',
        'col_status'    => 'is_active',
        'col_role'      => 'role',
        'customer_fk'   => 'customer_id',
        'customer_table'=> 'customers',
        'customer_cols' => [
            'name'   => 'name',
            'slug'   => 'slug',
            'status' => 'status',
            'plan'   => 'plan',
        ],
        'active_values' => ['active','1',1],
        'legacy'        => 'md5',
    ],
];
$auth = array_replace_recursive($authDefaults, $overrides['auth'] ?? []);

$smtpDefaults = [
    'host'       => 'smtp.example.com',
    'port'       => 587,
    'user'       => 'smtp-user',
    'pass'       => 'smtp-pass',
    'secure'     => 'tls',
    'from_email' => 'no-reply@example.com',
    'from_name'  => 'EmailTemplate',
];
$smtp = array_replace($smtpDefaults, $overrides['smtp'] ?? []);

$exportDefaults = [
    'api_keys' => ['dev-key-123', 'noch-ein-key'],
];
$export = array_replace_recursive($exportDefaults, $overrides['export'] ?? []);

$multiDefaults = [
    'tenant_col'    => 'customer_id',
    'map_session_to'=> 'id',
];
$multi = array_replace($multiDefaults, $overrides['multi'] ?? []);

$tablesDefaults = [
    'templates' => 'emailtemplate_templates',
    'sections'  => 'emailtemplate_sections',
    'blocks'    => 'emailtemplate_blocks',
    'snippets'  => 'emailtemplate_snippets',
];
$tables = array_replace($tablesDefaults, $overrides['tables'] ?? []);

$placeholdersDefaults = [
    'bridge' => [
        'url'       => getenv('EMAILTEMPLATE_PLACEHOLDER_URL') ?: '',
        'token'     => getenv('EMAILTEMPLATE_PLACEHOLDER_TOKEN') ?: '',
        'cache_ttl' => (int)(getenv('EMAILTEMPLATE_PLACEHOLDER_CACHE') ?: 300),
    ],
];
$placeholders = array_replace_recursive($placeholdersDefaults, $overrides['placeholders'] ?? []);

$columnsDefaults = [
    'templates' => ['id'=>'id','name'=>'name','desc'=>null,'cat'=>null,'upd'=>'updated_at'],
    'sections'  => ['id'=>'id','name'=>'name','cat'=>null,'upd'=>'updated_at'],
    'blocks'    => ['id'=>'id','name'=>'name','cat'=>'category','upd'=>'updated_at'],
    'snippets'  => ['id'=>'id','name'=>'name','cat'=>'category','upd'=>'updated_at'],
];
$columns = array_replace_recursive($columnsDefaults, $overrides['columns'] ?? []);

return [
    'projectdb' => $projectDb,
    'cors'      => $cors,
    'env'       => $env,
    'base_url'  => $baseUrl,
    'auth'      => $auth,
    'smtp'      => $smtp,
    'export'    => $export,
    'multi'     => $multi,
    'tables'    => $tables,
    'columns'   => $columns,
    'placeholders' => $placeholders,
];