<?php

use MintyPHP\Buffer;
use MintyPHP\Http\SessionStoreInterface;
use MintyPHP\Router;
use MintyPHP\Service\Access\DepartmentAuthorizationPolicy;
use MintyPHP\Support\Flash;
use MintyPHP\Support\Guard;

$session = app(SessionStoreInterface::class)->all();
Guard::requireLogin();
$request = requestInput();
$returnTarget = requestResolveReturnTarget();
$closeTarget = requestResolveReturnTarget('admin/departments');
$authorizationService = app(\MintyPHP\Service\Access\AuthorizationService::class);

$currentUserId = (int) ($session['user']['id'] ?? 0);
if ($currentUserId > 0) {
    app(\MintyPHP\Service\Access\PermissionService::class)->getUserPermissions($currentUserId);
}
$departmentService = app(\MintyPHP\Service\Org\DepartmentService::class);
$tenantService = app(\MintyPHP\Service\Tenant\TenantService::class);
$directoryScopeGateway = app(\MintyPHP\Service\Tenant\TenantScopeService::class);

$uuid = trim((string) ($id ?? ''));
$editTarget = requestPathWithReturnTarget("admin/departments/edit/{$uuid}", $returnTarget);

// Resolve the department BEFORE the aggregator so the authorize-context can
// carry the real target_department_id (matches today's order: lookup → CONTEXT
// authorize → can_view_page). The aggregator receives a trivial finder that
// returns the already-loaded model so its not-found branch fires only when
// findByUuid returned null.
$department = $uuid !== '' ? $departmentService->findByUuid($uuid) : null;
$departmentId = (int) ($department['id'] ?? 0);

$context = actionEditContext([
    'finder' => static fn (string $_id): mixed => $department,
    'rawId' => $uuid,
    'notFoundFlashKey' => 'Department not found',
    'notFoundRedirectPath' => $closeTarget,
    'notFoundFlashScopeKey' => 'department_not_found',
    'abilityKey' => DepartmentAuthorizationPolicy::ABILITY_ADMIN_DEPARTMENTS_EDIT_CONTEXT,
    'context' => [
        'actor_user_id' => $currentUserId,
        'target_department_id' => $departmentId,
    ],
    'viewAuthFlags' => ['can_update_department', 'can_delete_department'],
    'forbiddenStrategy' => 'redirect',
]);
$department = is_array($context['model']) ? $context['model'] : $department;
$capabilities = $context['capabilities'];
$tenantScope = $context['tenantScope'];
$viewAuth = $context['viewAuth'];
$canUpdateDepartment = (bool) ($capabilities['can_update_department'] ?? false);
$canDeleteDepartment = (bool) ($capabilities['can_delete_department'] ?? false);
$canManageAllTenants = $tenantScope['scope'] === 'all';
$allowedTenantIds = $tenantScope['ids'];

app(\MintyPHP\Service\Audit\AuditMetadataEnricherInterface::class)->enrich($department);

$errorBag = formErrors();
$errors = [];
$warnings = [];
$form = $department;
$tenants = $tenantService->list();
if ($canManageAllTenants) {
    // No filtering — actor may pick any tenant.
} elseif ($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)) {
        $form['tenant_id'] = 0;
    }
} elseif ($directoryScopeGateway->isStrict()) {
    $tenants = [];
    $form['tenant_id'] = 0;
}

if ($request->isMethod('POST') && !actionRequireCsrf($editTarget, $editTarget, 'csrf_expired')) {
    return;
}

if ($request->isMethod('POST')) {
    $submitDecision = $authorizationService->authorize(DepartmentAuthorizationPolicy::ABILITY_ADMIN_DEPARTMENTS_EDIT_SUBMIT, [
        'actor_user_id' => $currentUserId,
        'target_department_id' => $departmentId,
        'input' => $request->bodyAll(),
    ]);
    if (!$submitDecision->isAllowed()) {
        Router::redirect('error/forbidden');
        return;
    }

    $submitCapabilities = $submitDecision->attribute('capabilities', []);
    if (is_array($submitCapabilities)) {
        $canUpdateDepartment = (bool) ($submitCapabilities['can_update_department'] ?? $canUpdateDepartment);
        $canDeleteDepartment = (bool) ($submitCapabilities['can_delete_department'] ?? $canDeleteDepartment);
        $viewAuth['page'] = [
            'can_update_department' => $canUpdateDepartment,
            'can_delete_department' => $canDeleteDepartment,
        ];
    }
    if (!$canUpdateDepartment) {
        Router::redirect('error/forbidden');
        return;
    }

    $selectedTenantId = $request->bodyInt('tenant_id');
    if ($canManageAllTenants) {
        // No restriction — submitted tenant_id passes through.
    } elseif ($allowedTenantIds) {
        $selectedTenantId = in_array($selectedTenantId, $allowedTenantIds, true) ? $selectedTenantId : 0;
    } elseif ($directoryScopeGateway->isStrict()) {
        $selectedTenantId = 0;
    }
    $input = $request->bodyAll();
    $input['tenant_id'] = $selectedTenantId;

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

    if (($result['ok'] ?? false) && !$errorBag->hasAny()) {
        $cleaned = $departmentService->cleanupUserAssignments($departmentId);
        $action = (string) $request->body('action', 'save');
        if ($cleaned > 0) {
            Flash::info(t('Department assignments cleaned: %d', $cleaned), $editTarget, 'department_assignments_cleaned');
        }
        if ($action === 'save_close') {
            if ($warnings) {
                Flash::info(implode(' ', $warnings), $closeTarget, 'department_warning');
            }
            Flash::success(t('Department updated'), $closeTarget, 'department_updated');
            Router::redirect($closeTarget);
        } else {
            if ($warnings) {
                Flash::info(implode(' ', $warnings), $editTarget, 'department_warning');
            }
            Flash::success(t('Department updated'), $editTarget, 'department_updated');
            Router::redirect($editTarget);
        }
    }
}

$validationSummaryErrors = $errorBag->toArray();
$errors = $errorBag->toFlatList();
$titleText = $canUpdateDepartment ? t('Edit department') : t('View department');
Buffer::set('title', $titleText);
$breadcrumbs = [
    ['label' => t('Home'), 'path' => 'admin'],
    ['label' => t('Departments'), 'path' => 'admin/departments'],
    ['label' => $titleText],
];