<?php

/**
 * Trace diagnostic /compte + login — préprod/dev, ?trace_compte=1
 * Fichier : logs/compte-trace.log (à côté de compte.php)
 * En-tête réponse : X-Compte-Trace (visible dans F12 → Réseau)
 */

function fxTraceCompteLogPath()
{
    if (defined('APPLICATION_PATH')) {
        return rtrim(APPLICATION_PATH, '/\\') . '/logs/compte-trace.log';
    }

    return dirname(__DIR__) . '/logs/compte-trace.log';
}

function fxTraceCompteHostAllowed()
{
    global $vblnEnvironementDev, $vblnEnvironementPreProd;

    if (!empty($vblnEnvironementDev) || !empty($vblnEnvironementPreProd)) {
        return true;
    }

    $strHost = strtolower($_SERVER['HTTP_HOST'] ?? '');

    return (strpos($strHost, 'ms1inscriptiondev') !== false)
        || (strpos($strHost, 'progiweb.net') !== false && strpos($strHost, 'preprod') !== false);
}

function fxTraceCompteEnabled()
{
    static $blnEnabled = null;

    if ($blnEnabled !== null) {
        return $blnEnabled;
    }

    if (isset($_GET['trace_compte'])) {
        $_SESSION['trace_compte'] = ($_GET['trace_compte'] === '1' || $_GET['trace_compte'] === 'on');
    }

    $blnEnabled = !empty($_SESSION['trace_compte']) && fxTraceCompteHostAllowed();

    return $blnEnabled;
}

function fxTraceCompteWrite($strLine)
{
    $strPath = fxTraceCompteLogPath();
    $strDir = dirname($strPath);

    if (!is_dir($strDir)) {
        @mkdir($strDir, 0755, true);
    }

    $blnOk = @file_put_contents($strPath, $strLine, FILE_APPEND | LOCK_EX);

    if ($blnOk === false) {
        @error_log('compte-trace: ' . trim($strLine));
    }
}

function fxTraceCompte($strStep, $arrExtra = array())
{
    if (!fxTraceCompteEnabled()) {
        return;
    }

    if (!headers_sent()) {
        header('X-Compte-Trace: ' . $strStep);
    }

    $arrCtx = array(
        't' => microtime(true),
        'step' => $strStep,
        'uri' => $_SERVER['REQUEST_URI'] ?? '',
        'method' => $_SERVER['REQUEST_METHOD'] ?? '',
        'com_id' => $_SESSION['com_id'] ?? null,
        'usa_id' => $_SESSION['usa_id'] ?? null,
        'redirect_after_login' => $_SESSION['redirect_after_login'] ?? null,
    );

    if (!empty($arrExtra)) {
        $arrCtx = array_merge($arrCtx, $arrExtra);
    }

    fxTraceCompteWrite(date('Y-m-d H:i:s') . ' ' . json_encode($arrCtx, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) . "\n");
}

/** Bootstrap très tôt (inc_start_time) — avant inc_settings. */
function fxTraceCompteBootstrap()
{
    if (isset($_GET['trace_compte'])) {
        $_SESSION['trace_compte'] = ($_GET['trace_compte'] === '1' || $_GET['trace_compte'] === 'on');
    }

    if (empty($_SESSION['trace_compte'])) {
        return;
    }

    $strHost = $_SERVER['HTTP_HOST'] ?? '';
    if (strpos($strHost, 'ms1inscriptiondev') === false && strpos($strHost, 'progiweb') === false) {
        return;
    }

    if (!headers_sent()) {
        header('X-Compte-Trace: bootstrap');
    }

    fxTraceCompteWrite(date('Y-m-d H:i:s') . ' {"step":"bootstrap","uri":"'
        . str_replace('"', '', $_SERVER['REQUEST_URI'] ?? '') . '","host":"'
        . str_replace('"', '', $strHost) . '"}' . "\n");
}

function fxTraceCompteRedirect($strStep, $strUrl)
{
    fxTraceCompte($strStep, array('redirect_to' => $strUrl));
}