<?php

use MintyPHP\Buffer;
use MintyPHP\Router;
use MintyPHP\Service\Access\PermissionService;
use MintyPHP\Service\User\UserServicesFactory;
use MintyPHP\Support\Flash;
use MintyPHP\Support\Guard;

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

$currentUserId = (int) ($_SESSION['user']['id'] ?? 0);
if ($currentUserId > 0) {
    permissionGateway()->getUserPermissions($currentUserId);
}
$userAccountService = (new UserServicesFactory())->createUserAccountService();
$allowedTenantIds = directoryServicesFactory()->createDirectoryScopeGateway()->getUserTenantIds($currentUserId);

$uuid = trim((string) ($id ?? ''));
$department = $uuid !== '' ? directoryServicesFactory()->createDepartmentService()->findByUuid($uuid) : null;
if (!$department) {
    Flash::error('Department not found', 'admin/departments', 'department_not_found');
    Router::redirect('admin/departments');
}

$departmentId = (int) ($department['id'] ?? 0);
if (!directoryServicesFactory()->createDirectoryScopeGateway()->canAccess('departments', $departmentId, $currentUserId)) {
    Router::redirect('error/forbidden');
    return;
}
$creatorId = (int) ($department['created_by'] ?? 0);
if ($creatorId > 0) {
    $creator = $userAccountService->findById($creatorId);
    if ($creator) {
        $creatorName = trim(($creator['first_name'] ?? '') . ' ' . ($creator['last_name'] ?? ''));
        $department['created_by_label'] = $creatorName !== '' ? $creatorName : ($creator['email'] ?? '');
        $department['created_by_uuid'] = $creator['uuid'] ?? null;
    }
}
$modifierId = (int) ($department['modified_by'] ?? 0);
if ($modifierId > 0) {
    $modifier = $userAccountService->findById($modifierId);
    if ($modifier) {
        $modifierName = trim(($modifier['first_name'] ?? '') . ' ' . ($modifier['last_name'] ?? ''));
        $department['modified_by_label'] = $modifierName !== '' ? $modifierName : ($modifier['email'] ?? '');
        $department['modified_by_uuid'] = $modifier['uuid'] ?? null;
    }
}

$errors = [];
$warnings = [];
$form = $department;
$tenants = directoryServicesFactory()->createTenantService()->list();
if ($allowedTenantIds) {
    $tenants = array_values(array_filter($tenants, static function (array $tenant) use ($allowedTenantIds): bool {
        $tenantId = (int) ($tenant['id'] ?? 0);
        return $tenantId > 0 && in_array($tenantId, $allowedTenantIds, true);
    }));
    if (!in_array((int) ($form['tenant_id'] ?? 0), $allowedTenantIds, true)) {
        $form['tenant_id'] = 0;
    }
} elseif (directoryServicesFactory()->createDirectoryScopeGateway()->isStrict()) {
    $tenants = [];
    $form['tenant_id'] = 0;
}

if (isset($_POST['description'])) {
    if (!permissionGateway()->userHas($currentUserId, PermissionService::DEPARTMENTS_UPDATE)) {
        Router::redirect('error/forbidden');
        return;
    }
    $selectedTenantId = (int) ($_POST['tenant_id'] ?? 0);
    $selectedTenantIds = directoryServicesFactory()->createDirectoryScopeGateway()->filterTenantIdsForUser([$selectedTenantId], $currentUserId);
    $selectedTenantId = (int) ($selectedTenantIds[0] ?? 0);
    $input = $_POST;
    $input['tenant_id'] = $selectedTenantId;

    $result = directoryServicesFactory()->createDepartmentService()->updateFromAdmin($departmentId, $input, $currentUserId);
    $form = $result['form'] ?? $form;
    $errors = $result['errors'] ?? [];
    $warnings = $result['warnings'] ?? [];
    $form['tenant_id'] = $selectedTenantId;

    if (($result['ok'] ?? false) && !$errors) {
        $cleaned = directoryServicesFactory()->createDepartmentService()->cleanupUserAssignments($departmentId);
        $action = (string) ($_POST['action'] ?? 'save');
        if ($cleaned > 0) {
            Flash::info(t('Department assignments cleaned: %d', $cleaned), "admin/departments/edit/{$uuid}", 'department_assignments_cleaned');
        }
        if ($action === 'save_close') {
            if ($warnings) {
                Flash::info(implode(' ', $warnings), 'admin/departments', 'department_warning');
            }
            Flash::success('Department updated', 'admin/departments', 'department_updated');
            Router::redirect('admin/departments');
        } else {
            if ($warnings) {
                Flash::info(implode(' ', $warnings), "admin/departments/edit/{$uuid}", 'department_warning');
            }
            Flash::success('Department updated', "admin/departments/edit/{$uuid}", 'department_updated');
            Router::redirect("admin/departments/edit/{$uuid}");
        }
    }
}

Buffer::set('title', t('Edit department'));
