asset hash 새로고침 추가

README.md

@@ -55,6 +55,7 @@ Car는 차량 모뎀/게이트웨이에서 받은 상태를 수집해 DB에 저
 ## 구성
 
 - `api.php`: 차량 상태/제어 API
+- `asset-version.php`: 차량 모니터 파일 묶음의 현재 hash를 내려주는 JSON 엔드포인트
 - `monitor.php`: 모니터링 화면과 AJAX 응답
 - `common.php`: 외부 secret 로드와 공통 DB/API 함수
 - `collector_se.php`: 상태 수집 CLI/cron
@@ -63,6 +64,8 @@ Car는 차량 모뎀/게이트웨이에서 받은 상태를 수집해 DB에 저
 - `sw.js`: service worker
 - `assets/`: 아이콘과 정적 자산
 
+`asset-version.php`는 차량 모니터의 PHP/JS/CSS/manifest/icon 파일을 읽어 크기, 수정 시각, sha256 hash를 묶은 버전을 만듭니다. `assets/asset-reload.js`는 열린 모니터 화면에서 이 값을 확인하고, 달라지면 Cache Storage를 비운 뒤 현재 화면을 다시 엽니다.
+
 ## 데이터/저장소
 
 - Car DB tables: 차량 상태, 로그, 차트용 기록, TCP 요청 큐

asset-version.php

@@ -0,0 +1,75 @@
+<?php
+declare(strict_types=1);
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
+header('Pragma: no-cache');
+
+$service = 'car';
+$root = __DIR__;
+$scanRoots = [
+    '.' => ['php', 'js', 'css', 'webmanifest', 'svg', 'png', 'ico'],
+];
+
+function collect_asset_files(string $root, array $scanRoots): array
+{
+    $files = [];
+    $rootPath = realpath($root);
+    if (!$rootPath) {
+        return $files;
+    }
+
+    foreach ($scanRoots as $relativeRoot => $extensions) {
+        $base = realpath($rootPath . DIRECTORY_SEPARATOR . $relativeRoot);
+        if (!$base || strpos($base, $rootPath) !== 0) {
+            continue;
+        }
+
+        $allowed = array_fill_keys(array_map('strtolower', $extensions), true);
+        $iterator = new RecursiveIteratorIterator(
+            new RecursiveDirectoryIterator($base, FilesystemIterator::SKIP_DOTS)
+        );
+
+        foreach ($iterator as $file) {
+            if (!$file instanceof SplFileInfo || !$file->isFile()) {
+                continue;
+            }
+
+            $extension = strtolower($file->getExtension());
+            if (!isset($allowed[$extension])) {
+                continue;
+            }
+
+            $path = $file->getRealPath();
+            if ($path && strpos($path, $rootPath . DIRECTORY_SEPARATOR) === 0) {
+                $files[] = $path;
+            }
+        }
+    }
+
+    sort($files, SORT_STRING);
+    return array_values(array_unique($files));
+}
+
+clearstatcache();
+$rootPath = realpath($root);
+$fingerprints = [];
+
+foreach (collect_asset_files($root, $scanRoots) as $fullPath) {
+    $relativePath = ltrim(str_replace($rootPath ?: $root, '', $fullPath), DIRECTORY_SEPARATOR);
+    $fileHash = is_readable($fullPath) ? (hash_file('sha256', $fullPath) ?: 'hash-failed') : 'unreadable';
+    $fingerprints[] = implode('|', [
+        str_replace(DIRECTORY_SEPARATOR, '/', $relativePath),
+        (string)filesize($fullPath),
+        (string)filemtime($fullPath),
+        $fileHash,
+    ]);
+}
+
+echo json_encode([
+    'result' => 'ok',
+    'service' => $service,
+    'version' => hash('sha256', implode("\n", $fingerprints)),
+    'count' => count($fingerprints),
+    'generatedAt' => time(),
+], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

assets/asset-reload.js

@@ -0,0 +1,93 @@
+(function () {
+    'use strict';
+
+    var script = document.currentScript || (function () {
+        var scripts = document.getElementsByTagName('script');
+        return scripts[scripts.length - 1] || null;
+    })();
+    var service = script && script.dataset ? script.dataset.service : '';
+    var endpoint = script && script.dataset && script.dataset.endpoint
+        ? script.dataset.endpoint
+        : new URL('../asset-version.php', script ? script.src : window.location.href).toString();
+    var interval = script && script.dataset && script.dataset.interval ? Number(script.dataset.interval) : 30000;
+
+    if (!service || window.__assetReloadStarted) return;
+
+    window.__assetReloadStarted = true;
+    interval = Math.max(15000, Number.isFinite(interval) ? interval : 30000);
+
+    var storageKey = 'assetVersion:' + service;
+    var reloadKey = 'assetReload:' + service;
+    var running = false;
+
+    function addQuery(url, key, value) {
+        var parsed = new URL(url, window.location.href);
+        parsed.searchParams.set(key, value);
+        return parsed.toString();
+    }
+
+    function deleteCaches() {
+        if (!window.caches || !window.caches.keys) return Promise.resolve();
+
+        return window.caches.keys().then(function (keys) {
+            return Promise.all(keys.map(function (key) {
+                return window.caches.delete(key);
+            }));
+        }).catch(function () {});
+    }
+
+    function reloadWith(version) {
+        var token = version.slice(0, 12);
+        var marker = token + ':' + Math.floor(Date.now() / 10000);
+
+        if (sessionStorage.getItem(reloadKey) === marker) return;
+
+        sessionStorage.setItem(reloadKey, marker);
+        deleteCaches().then(function () {
+            window.location.replace(addQuery(window.location.href, 'assetReload', token));
+        });
+    }
+
+    function check(force) {
+        if (running || (!force && document.hidden)) return;
+
+        running = true;
+        fetch(addQuery(endpoint, '_', String(Date.now())), {
+            cache: 'no-store',
+            credentials: 'same-origin',
+            headers: {
+                'Cache-Control': 'no-cache',
+                'Pragma': 'no-cache'
+            }
+        }).then(function (response) {
+            if (!response.ok) throw new Error('asset version request failed');
+            return response.json();
+        }).then(function (data) {
+            if (!data || data.result !== 'ok' || !data.version) return;
+
+            var previous = localStorage.getItem(storageKey);
+            localStorage.setItem(storageKey, data.version);
+
+            if (previous && previous !== data.version) {
+                reloadWith(data.version);
+            }
+        }).catch(function () {}).finally(function () {
+            running = false;
+        });
+    }
+
+    window.addEventListener('pageshow', function () {
+        check(true);
+    });
+    window.addEventListener('focus', function () {
+        check(true);
+    });
+    document.addEventListener('visibilitychange', function () {
+        if (!document.hidden) check(true);
+    });
+
+    setInterval(function () {
+        check(false);
+    }, interval);
+    check(true);
+})();

monitor.php

@@ -1197,6 +1197,7 @@ $carMonitorSession = car_monitor_launcher_session();
     <link rel="icon" href="/car/assets/icon-192.png" type="image/png" sizes="192x192">
     <link rel="apple-touch-icon" href="/car/assets/apple-touch-icon.png">
     <link rel="manifest" href="/car/assets/site.webmanifest">
+    <script src="/car/assets/asset-reload.js" data-service="car" defer></script>
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Gowun+Dodum&display=swap" rel="stylesheet">