<?php

use MintyPHP\Repository\Tenant\TenantMicrosoftAuthRepository;
use MintyPHP\Router;
use MintyPHP\Service\Access\PermissionService;
use MintyPHP\Service\Settings\SettingServicesFactory;
use MintyPHP\Service\User\UserServicesFactory;
use MintyPHP\Support\Guard;

Guard::requireLogin();
Guard::requirePermissionOrForbidden(PermissionService::TENANTS_VIEW);

$limit = (int) ($_GET['limit'] ?? 10);
$offset = (int) ($_GET['offset'] ?? 0);
$search = trim((string) ($_GET['search'] ?? ''));
$order = (string) ($_GET['order'] ?? 'description');
$dir = (string) ($_GET['dir'] ?? 'asc');
$dir = strtolower($dir) === 'desc' ? 'desc' : 'asc';
$computedOrderKeys = ['theme', 'sso', 'active_users', 'inactive_users'];
$userTenantRepository = (new UserServicesFactory())->createUserTenantRepository();
$tenantMicrosoftAuthRepository = new TenantMicrosoftAuthRepository();
$settingGateway = (new SettingServicesFactory())->createSettingGateway();

$fetchRows = static function (
    array $tenantRows,
    array $themes,
    string $globalDefaultTheme
) use ($userTenantRepository, $tenantMicrosoftAuthRepository, $settingGateway): array {
    $tenantIds = [];
    foreach ($tenantRows as $tenantRow) {
        $tenantId = (int) ($tenantRow['id'] ?? 0);
        if ($tenantId > 0) {
            $tenantIds[] = $tenantId;
        }
    }
    $tenantIds = array_values(array_unique($tenantIds));

    $tenantSsoMap = $tenantMicrosoftAuthRepository->listByTenantIds($tenantIds);
    $tenantUserCounts = $userTenantRepository->countUsersByTenantIds($tenantIds);
    $tenantActiveUserCounts = $userTenantRepository->countActiveUsersByTenantIds($tenantIds);

    $defaultTenantId = $settingGateway->getDefaultTenantId();
    $rows = [];

    foreach ($tenantRows as $row) {
        $tenantId = (int) ($row['id'] ?? 0);
        $tenantTheme = strtolower(trim((string) ($row['default_theme'] ?? '')));
        $themeIsTenantOverride = $tenantTheme !== '' && isset($themes[$tenantTheme]);
        $resolvedThemeKey = $themeIsTenantOverride ? $tenantTheme : $globalDefaultTheme;
        $resolvedThemeLabel = (string) ($themes[$resolvedThemeKey] ?? ucfirst($resolvedThemeKey));

        $themePolicyRaw = $row['allow_user_theme'] ?? null;
        $themePolicyMode = 'inherit';
        if ($themePolicyRaw !== null && $themePolicyRaw !== '') {
            $normalized = strtolower(trim((string) $themePolicyRaw));
            if (in_array($normalized, ['1', 'true', 'yes', 'on'], true)) {
                $themePolicyMode = 'allow';
            } elseif (in_array($normalized, ['0', 'false', 'no', 'off'], true)) {
                $themePolicyMode = 'disallow';
            }
        }

        $tenantSso = $tenantSsoMap[$tenantId] ?? null;
        $ssoEnabled = !empty($tenantSso['enabled']);
        $ssoMicrosoftOnly = $ssoEnabled && !empty($tenantSso['enforce_microsoft_login']);
        $usersTotal = (int) ($tenantUserCounts[$tenantId] ?? 0);
        $usersActive = (int) ($tenantActiveUserCounts[$tenantId] ?? 0);
        $usersInactive = max(0, $usersTotal - $usersActive);

        $rows[] = [
            'id' => $row['id'] ?? null,
            'uuid' => $row['uuid'] ?? '',
            'is_default' => $tenantId > 0 && $defaultTenantId === $tenantId,
            'description' => $row['description'] ?? '',
            'status' => $row['status'] ?? 'active',
            'theme' => [
                'key' => $resolvedThemeKey,
                'label' => t($resolvedThemeLabel),
                'is_override' => $themeIsTenantOverride ? 1 : 0,
                'policy_mode' => $themePolicyMode,
            ],
            'sso' => [
                'enabled' => $ssoEnabled ? 1 : 0,
                'microsoft_only' => $ssoMicrosoftOnly ? 1 : 0,
            ],
            'active_users' => $usersActive,
            'inactive_users' => $usersInactive,
            'created' => dt($row['created'] ?? ''),
            'modified' => dt($row['modified'] ?? ''),
        ];
    }

    return $rows;
};

$themes = appThemes();
$globalDefaultTheme = $settingGateway->getAppTheme();
if ($globalDefaultTheme === null || !isset($themes[$globalDefaultTheme])) {
    $envTheme = strtolower(trim((string) (getenv('APP_THEME') ?: 'light')));
    $globalDefaultTheme = isset($themes[$envTheme]) ? $envTheme : 'light';
}

$result = directoryServicesFactory()->createTenantService()->listPaged([
    'limit' => $limit,
    'offset' => $offset,
    'search' => $search,
    'order' => in_array($order, $computedOrderKeys, true) ? 'description' : $order,
    'dir' => $dir,
]);

$rows = [];
$total = (int) ($result['total'] ?? 0);
if (in_array($order, $computedOrderKeys, true)) {
    $fullResult = directoryServicesFactory()->createTenantService()->listPaged([
        'limit' => max(1, $total),
        'offset' => 0,
        'search' => $search,
        'order' => 'description',
        'dir' => 'asc',
    ]);
    $rows = $fetchRows($fullResult['rows'] ?? [], $themes, $globalDefaultTheme);

    usort($rows, static function (array $a, array $b) use ($order, $dir): int {
        $valueA = '';
        $valueB = '';
        if ($order === 'theme') {
            $valueA = strtolower((string) ($a['theme']['label'] ?? ''));
            $valueB = strtolower((string) ($b['theme']['label'] ?? ''));
        } elseif ($order === 'sso') {
            $valueA = ((int) $a['sso']['enabled'] * 10) + (int) $a['sso']['microsoft_only'];
            $valueB = ((int) $b['sso']['enabled'] * 10) + (int) $b['sso']['microsoft_only'];
        } elseif ($order === 'inactive_users') {
            $valueA = (int) $a['inactive_users'];
            $valueB = (int) $b['inactive_users'];
        } else {
            $valueA = (int) $a['active_users'];
            $valueB = (int) $b['active_users'];
        }
        $cmp = $valueA <=> $valueB;
        if ($cmp === 0) {
            $cmp = strcasecmp((string) $a['description'], (string) $b['description']);
        }
        return $dir === 'desc' ? -$cmp : $cmp;
    });
    $rows = array_slice($rows, $offset, $limit);
} else {
    $rows = $fetchRows($result['rows'] ?? [], $themes, $globalDefaultTheme);
}

Router::json([
    'data' => $rows,
    'total' => $total,
]);