<?php
/**
 * notify_node — fire-and-forget event push to the Node.js real-time server.
 *
 * Call this AFTER a successful DB commit. It never throws — if Node is down
 * the request times out silently in 1 second.
 *
 * @param string $event      Event name, e.g. 'gl_posted'
 * @param array  $data       Payload sent to the browser
 * @param int    $company_id Scopes the broadcast to one company's room
 */
function notify_node(string $event, array $data, int $company_id, string $target = '', int $user_id = 0): void
{
    if ($company_id <= 0) return;

    $payload = ['event' => $event, 'data' => $data, 'company_id' => $company_id];
    if ($target)  $payload['target']  = $target;
    if ($user_id) $payload['user_id'] = $user_id;

    $body = json_encode($payload);

    $ch = curl_init(defined('NODE_EMIT_URL') ? NODE_EMIT_URL : 'http://127.0.0.1:3000/emit');
    curl_setopt_array($ch, [
        CURLOPT_POST           => true,
        CURLOPT_POSTFIELDS     => $body,
        CURLOPT_HTTPHEADER     => [
            'Content-Type: application/json',
            'x-emit-secret: ' . (defined('NODE_EMIT_SECRET') ? NODE_EMIT_SECRET : ''),
        ],
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT        => 1,    // never block PHP
        CURLOPT_CONNECTTIMEOUT => 1,
    ]);
    curl_exec($ch);
    curl_close($ch);
}

/**
 * emit_notification — push a real-time notification to all browser tabs in a company.
 *
 * The browser shows a toast immediately and adds the item to the bell dropdown.
 *
 * @param int    $company_id  Target company
 * @param string $title       Short heading, e.g. 'PO Approved'
 * @param string $message     Detail line, e.g. 'PO-2605-00042 has been approved.'
 * @param string $type        'success' | 'info' | 'warning' | 'danger'  (default 'info')
 */
// Company-wide notification — all users in the company see the toast.
function emit_notification(int $company_id, string $title, string $message, string $type = 'info'): void
{
    notify_node('notification', [
        'title'   => $title,
        'message' => $message,
        'type'    => $type,
    ], $company_id);
}

// Document notification — the acting user + all admins/owners see the toast. Other staff/viewers do not.
function emit_notification_user(int $company_id, int $user_id, string $title, string $message, string $type = 'info'): void
{
    notify_node('notification', [
        'title'   => $title,
        'message' => $message,
        'type'    => $type,
    ], $company_id, 'user', $user_id);
}

function gl_posted_payload(string $doc_type, int $id, string $action, array $lines): array
{
    $has_revenue = false;
    $has_expense = false;

    foreach ($lines as $line) {
        $code = (int)($line['account_code'] ?? 0);
        if ($code >= 4000 && $code < 5000) $has_revenue = true;
        if ($code >= 5000)                 $has_expense = true;
    }

    return [
        'doc_type'    => $doc_type,
        'id'          => $id,
        'action'      => $action,
        'has_revenue' => $has_revenue,
        'has_expense' => $has_expense,
    ];
}