<?php
/**
 * NIS2 Agile - Admin Controller
 *
 * Gestione piattaforma (solo super_admin).
 */

require_once __DIR__ . '/BaseController.php';

class AdminController extends BaseController
{
    public function listOrganizations(): void
    {
        $this->requireSuperAdmin();
        $pagination = $this->getPagination();

        $total = Database::count('organizations', '1=1');
        $orgs = Database::fetchAll(
            "SELECT o.*,
                    (SELECT COUNT(*) FROM user_organizations WHERE organization_id = o.id) as member_count,
                    (SELECT overall_score FROM assessments WHERE organization_id = o.id AND status = 'completed' ORDER BY completed_at DESC LIMIT 1) as last_score
             FROM organizations o
             ORDER BY o.created_at DESC
             LIMIT {$pagination['per_page']} OFFSET {$pagination['offset']}"
        );

        $this->jsonPaginated($orgs, $total, $pagination['page'], $pagination['per_page']);
    }

    public function listUsers(): void
    {
        $this->requireSuperAdmin();
        $pagination = $this->getPagination();

        $total = Database::count('users', '1=1');
        $users = Database::fetchAll(
            "SELECT u.id, u.email, u.full_name, u.role, u.is_active, u.last_login_at, u.created_at,
                    GROUP_CONCAT(o.name) as organizations
             FROM users u
             LEFT JOIN user_organizations uo ON uo.user_id = u.id
             LEFT JOIN organizations o ON o.id = uo.organization_id
             GROUP BY u.id
             ORDER BY u.created_at DESC
             LIMIT {$pagination['per_page']} OFFSET {$pagination['offset']}"
        );

        $this->jsonPaginated($users, $total, $pagination['page'], $pagination['per_page']);
    }

    public function platformStats(): void
    {
        $this->requireSuperAdmin();

        $this->jsonSuccess([
            'total_organizations' => Database::count('organizations', '1=1'),
            'active_organizations' => Database::count('organizations', 'is_active = 1'),
            'total_users'         => Database::count('users', '1=1'),
            'active_users'        => Database::count('users', 'is_active = 1'),
            'total_assessments'   => Database::count('assessments', '1=1'),
            'completed_assessments' => Database::count('assessments', 'status = "completed"'),
            'total_incidents'     => Database::count('incidents', '1=1'),
            'open_incidents'      => Database::count('incidents', 'status NOT IN ("closed", "post_mortem")'),
            'total_risks'         => Database::count('risks', '1=1'),
            'total_policies'      => Database::count('policies', '1=1'),
            'ai_interactions'     => Database::count('ai_interactions', '1=1'),
            'plans_distribution'  => Database::fetchAll(
                'SELECT subscription_plan, COUNT(*) as count FROM organizations GROUP BY subscription_plan'
            ),
        ]);
    }
}