<?php
/**
 * Dashboard Stats Endpoint (Role-Based & Tenant-Aware)
 */

use App\Core\Database;
use App\Middleware\AuthMiddleware;

// 1. Auth Check
$decoded = AuthMiddleware::check();
$db = Database::getInstance();

$tenantId = $decoded['tenant_id'] ?? null;
$companyId = $decoded['company_id'] ?? null;
$role = $decoded['role'];

try {
    // 2. Apply Filters based on Role
    if ($role === 'super_admin') {
        // No filters - see everything
        $where = "WHERE 1=1";
        $params = [];
    } else {
        // Tenant Users (Admin, Accountant, Employee): Filter by Tenant
        $where = "WHERE tenant_id = ?";
        $params = [$tenantId];
    }

    // 3. Fetch Stats
    $stmt = $db->prepare("SELECT COUNT(*) FROM invoices $where");
    $stmt->execute($params);
    $total = $stmt->fetchColumn();

    $stmt = $db->prepare("SELECT COUNT(*) FROM invoices $where AND status = 'extracted'");
    $stmt->execute($params);
    $pending = $stmt->fetchColumn();

    $stmt = $db->prepare("SELECT COUNT(*) FROM invoices $where AND status = 'approved'");
    $stmt->execute($params);
    $approved = $stmt->fetchColumn();

} catch (\Exception $e) {
    $total = 0;
    $pending = 0;
    $approved = 0;
}

json_success([
    'total' => $total,
    'pending' => $pending,
    'approved' => $approved
]);