<?php

namespace App\Controllers;

use App\Core\Database;
use App\Core\Request;
use App\Core\Response;
use App\Services\CliqPaymentService;

class SuperAdminController
{
    public function overview(Request $request, Response $response): void
    {
        CliqPaymentService::ensureSchema();

        $counts = [
            'total_directorates' => $this->count('directorates'),
            'total_schools' => $this->count('schools'),
            'total_students' => $this->count('students'),
            'total_teachers' => $this->count('teachers'),
        ];
        $payments = Database::selectOne(
            "SELECT COALESCE(SUM(CASE WHEN verification_status = 'verified' THEN amount_jod ELSE 0 END), 0) AS inflow FROM cliq_payments"
        );
        $payouts = Database::selectOne(
            "SELECT SUM(CASE WHEN status IN ('queued', 'processing') THEN 1 ELSE 0 END) AS pending_count,
                    COALESCE(SUM(CASE WHEN status = 'completed' THEN amount_jod ELSE 0 END), 0) AS paid_out
             FROM payout_queue"
        );
        $inflow = (float)($payments['inflow'] ?? 0);
        $paidOut = (float)($payouts['paid_out'] ?? 0);

        $response->json([
            'status' => 'success',
            'data' => array_merge($counts, [
                'gross_margin_percent' => $inflow > 0 ? round((($inflow - $paidOut) / $inflow) * 100, 2) : 0.0,
                'treasury_balance_jod' => max(0, $inflow - $paidOut),
                'total_cliq_inflow_jod' => $inflow,
                'pending_payouts_count' => (int)($payouts['pending_count'] ?? 0),
                'r2_cost_savings_jod' => 0.0,
                'uptime_percent' => 0.0,
                'measurement_notes' => [
                    'r2_cost_savings_jod' => 'يتطلب ربط Cloudflare Billing Analytics',
                    'uptime_percent' => 'يتطلب ربط مزود مراقبة خارجي',
                ],
            ]),
        ]);
    }

    public function payouts(Request $request, Response $response): void
    {
        CliqPaymentService::ensureSchema();
        $items = Database::select(
            "SELECT pq.id, t.full_name AS teacher_name, pq.teacher_cliq_alias AS cliq_alias,
                    pq.amount_jod, pq.created_at AS requested_at, pq.status
             FROM payout_queue pq
             JOIN teachers t ON t.id = pq.teacher_id
             ORDER BY pq.id DESC LIMIT 100"
        );
        $response->json(['status' => 'success', 'data' => $items]);
    }

    public function aiNodes(Request $request, Response $response): void
    {
        $configured = trim((string)getenv('SAQEL_AI_NODES_JSON'));
        $nodes = $configured !== '' ? json_decode($configured, true) : [];
        if (!is_array($nodes)) {
            $response->status(500)->json(['status' => 'error', 'message' => 'إعداد عقد الذكاء الاصطناعي غير صالح']);
            return;
        }
        $response->json(['status' => 'success', 'data' => array_values($nodes)]);
    }

    public function securityAlerts(Request $request, Response $response): void
    {
        // No synthetic alerts: an audit-event pipeline will populate this endpoint.
        $response->json(['status' => 'success', 'data' => []]);
    }

    private function count(string $table): int
    {
        $row = Database::selectOne("SELECT COUNT(*) AS count_value FROM `{$table}`");
        return (int)($row['count_value'] ?? 0);
    }
}