fitme3070.pt/config/ci_compat.php

<?php
// ─── CodeIgniter 4 view-helper compatibility shim ────────────────────────────
// Lets the original fitme3070 view partials (site/partials/*) run byte-for-byte
// under the new plain-PHP structure. Only the helpers the ported templates
// actually use are implemented. base_url() comes from config/functions.php.

if (!defined('SITE_INCLUDES')) {
    define('SITE_INCLUDES', dirname(__DIR__) . '/site/includes');
}

// <script src> / <link rel=stylesheet> tag builders (CI4 html helper).
// site/assets is served with a one-year immutable Cache-Control, so local files
// carry their mtime as ?v= — an edited style.css/main.js gets a new URL instead
// of staying stuck in returning visitors' caches.
function _asset_versioned(string $path): string {
    $file = dirname(__DIR__) . '/' . ltrim($path, '/');
    if (strpos($path, '?') !== false || preg_match('~^https?://~', $path) || !is_file($file)) return base_url($path);
    return base_url($path) . '?v=' . filemtime($file);
}
function script_tag(string $src): string {
    return '<script src="' . htmlspecialchars(_asset_versioned($src), ENT_QUOTES) . '"></script>' . "\n";
}
function link_tag(string $href, string $rel = 'stylesheet'): string {
    return '<link rel="' . $rel . '" href="' . htmlspecialchars(_asset_versioned($href), ENT_QUOTES) . '">' . "\n";
}
function site_url(string $path = ''): string { return base_url($path); }

function esc($value, string $context = 'html'): string {
    return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
}

// Render a partial like CI4's view(): extract $data + the shared page vars
// (info / navbar / current_uri_2 via $GLOBALS['_view_shared']) and return the
// buffered HTML. Lets partials read $info without threading it through callers.
function view(string $name, array $data = []): string {
    $shared = $GLOBALS['_view_shared'] ?? [];
    extract($shared);
    extract($data);
    ob_start();
    include SITE_INCLUDES . '/' . $name . '.php';
    return ob_get_clean();
}

// Minimal session() shim — the templates only read getFlashdata().
// Per-request singleton: the constructor's flash sweep therefore runs once per
// request, which is what makes flashdata actually "flash".
function session(): _FitSession {
    static $s = null;
    if ($s === null) $s = new _FitSession();
    return $s;
}
class _FitSession {
    // CI4-style flashdata lifecycle. A value set with setFlashdata() in request N
    // (the POST handler, just before its redirect) must be readable in request
    // N+1 (the redirect target) and then disappear — otherwise the banner sticks
    // around forever, surviving reloads, because nothing ever clears it.
    //
    // We track an age marker per key: setFlashdata() marks it 'new'; on the next
    // request the sweep ages 'new' → 'old' (still readable), and on the request
    // after that it deletes anything 'old'. The sweep runs once, here, before any
    // read or write this request (setFlashdata() is itself the first session()
    // call in a POST handler, so the constructor always precedes it).
    public function __construct() {
        foreach ($_SESSION['_flash_age'] ?? [] as $k => $age) {
            if ($age === 'old') {
                unset($_SESSION['_flash'][$k], $_SESSION['_flash_age'][$k]);
            } else {
                $_SESSION['_flash_age'][$k] = 'old';
            }
        }
        // Sweep orphans left by the previous (never-expiring) shim: any flash
        // value with no age marker is stale and would otherwise stick forever.
        foreach (array_keys($_SESSION['_flash'] ?? []) as $k) {
            if (!isset($_SESSION['_flash_age'][$k])) unset($_SESSION['_flash'][$k]);
        }
        if (empty($_SESSION['_flash']))     unset($_SESSION['_flash']);
        if (empty($_SESSION['_flash_age'])) unset($_SESSION['_flash_age']);
    }
    public function getFlashdata(string $key) { return $_SESSION['_flash'][$key] ?? null; }
    public function setFlashdata(string $key, $val): void {
        $_SESSION['_flash'][$key]     = $val;
        $_SESSION['_flash_age'][$key] = 'new';
    }
    public function get(string $key) { return $_SESSION[$key] ?? null; }
    public function set(string $key, $val): void { $_SESSION[$key] = $val; }
}