288 lines
9.2 KiB
JavaScript
288 lines
9.2 KiB
JavaScript
/**
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* app.js — UI выбора и загрузки файлов.
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*
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* Выбираем файлы через <input type="file" multiple>,
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* показываем в таблице: имя, размер, прогресс, статус.
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* Кнопка «Загрузить» — XHR на /upload, контент не сохраняется.
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*/
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var files = []; // [{ name, size, lastModified, file, status, progress, speed, elapsed }]
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var uploading = false; // флаг: идёт загрузка
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var fileInput = document.getElementById('fileInput');
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var fileTable = document.getElementById('fileTable');
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var fileSummary = document.getElementById('fileSummary');
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var clearBtn = document.getElementById('clearBtn');
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var uploadBtn = document.getElementById('uploadBtn');
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fileInput.addEventListener('change', function () {
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addFiles(fileInput.files);
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fileInput.value = '';
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});
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/** formatSize(bytes) → "1.2 KB", "3.4 MB", "900 B" */
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function formatSize(bytes) {
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if (!bytes || bytes === 0) return '—';
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if (bytes < 1024) return bytes + ' B';
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if (bytes < 1048576) return (bytes / 1024).toFixed(1) + ' KB';
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if (bytes < 1073741824) return (bytes / 1048576).toFixed(1) + ' MB';
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return (bytes / 1073741824).toFixed(2) + ' GB';
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}
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/** formatSpeed(bytesPerSec) → "1.2 MB/s" */
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function formatSpeed(bps) {
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if (!bps || bps === 0) return '—';
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if (bps < 1024) return bps + ' B/s';
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if (bps < 1048576) return (bps / 1024).toFixed(1) + ' KB/s';
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return (bps / 1048576).toFixed(1) + ' MB/s';
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}
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/** addFiles(fileList) — добавить файлы в массив и перерисовать */
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function addFiles(fileList) {
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for (var i = 0; i < fileList.length; i++) {
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var f = fileList[i];
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files.push({
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name: f.name,
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size: f.size,
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lastModified: f.lastModified,
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file: f, // сохраняем File-объект для XHR
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status: '', // '' | 'uploading' | 'ok' | 'err'
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progress: 0, // 0-100
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speed: null, // bytes/sec
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elapsed: null // ms
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});
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}
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renderTable();
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}
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/** removeFile(i) — удалить файл по индексу */
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function removeFile(i) {
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if (uploading) return;
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files.splice(i, 1);
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renderTable();
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}
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/** renderTable() — перерисовать таблицу и сводку */
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function renderTable() {
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if (files.length === 0) {
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fileTable.innerHTML = '<tr class="empty-row"><td colspan="5">Нет файлов — выберите файлы</td></tr>';
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fileSummary.textContent = 'Нет файлов';
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clearBtn.disabled = true;
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uploadBtn.disabled = true;
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return;
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}
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var totalSize = 0;
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var rows = [];
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for (var i = 0; i < files.length; i++) {
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var f = files[i];
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totalSize += f.size;
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// Прогресс-бар
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var progressHTML = '';
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if (f.status === 'uploading') {
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progressHTML = '<div style="display:flex;align-items:center;gap:4px;">' +
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'<div style="flex:1;height:6px;background:#e0e0e0;border-radius:3px;overflow:hidden;">' +
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'<div style="height:100%;width:' + f.progress + '%;background:var(--brand);border-radius:3px;transition:width .1s;"></div>' +
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'</div>' +
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'<span style="font-size:11px;min-width:32px;">' + f.progress + '%</span>' +
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'</div>';
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} else if (f.status === 'ok') {
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progressHTML = '<span style="color:var(--green);font-size:12px;">✓ ' + formatSpeed(f.speed) + '</span>';
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} else if (f.status === 'err') {
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progressHTML = '<span style="color:var(--red);font-size:12px;">✗ ' + escHtml(f.error || '') + '</span>';
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} else {
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progressHTML = '<span style="color:var(--muted);">—</span>';
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}
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// Статус
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var statusHTML = '';
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if (f.status === 'uploading') {
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statusHTML = '<span style="color:var(--brand);">↑ загрузка...</span>';
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} else if (f.status === 'ok') {
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statusHTML = '<span style="color:var(--green);">✓ ' + (f.elapsed ? (f.elapsed / 1000).toFixed(1) + 'с' : '') + '</span>';
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} else if (f.status === 'err') {
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statusHTML = '<span style="color:var(--red);">✗ ' + escHtml(f.error || '') + '</span>';
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} else {
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statusHTML = '<span style="color:var(--muted);">ожидает</span>';
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}
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rows.push(
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'<tr>' +
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'<td class="name-cell" title="' + escHtml(f.name) + '">' + escHtml(f.name) + '</td>' +
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'<td class="num-cell">' + formatSize(f.size) + '</td>' +
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'<td>' + progressHTML + '</td>' +
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'<td>' + statusHTML + '</td>' +
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'<td><button class="remove-btn" onclick="removeFile(' + i + ')" title="Удалить"' + (uploading ? ' disabled style="opacity:.3;cursor:not-allowed;"' : '') + '>✕</button></td>' +
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'</tr>'
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);
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}
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fileTable.innerHTML = rows.join('');
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fileSummary.textContent = files.length + ' файл., ' + formatSize(totalSize);
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clearBtn.disabled = uploading;
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uploadBtn.disabled = uploading || files.length === 0;
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if (uploading) {
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uploadBtn.textContent = '⏳ Загрузка...';
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} else {
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uploadBtn.textContent = 'Загрузить';
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}
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}
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/** warmup() — прогрев соединения перед загрузкой */
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function warmup() {
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return new Promise(function (resolve) {
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var xhr = new XMLHttpRequest();
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xhr.open('GET', '/health');
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xhr.timeout = 3000;
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xhr.onload = function () { resolve(true); };
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xhr.onerror = function () { resolve(false); };
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xhr.ontimeout = function () { resolve(false); };
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xhr.send();
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});
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}
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/** uploadAll() — загрузка всех файлов через один WebSocket */
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async function uploadAll() {
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if (uploading || files.length === 0) return;
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uploading = true;
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uploadBtn.disabled = true;
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clearBtn.disabled = true;
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var totalBytes = 0;
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var totalElapsed = 0;
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var okCount = 0;
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var errCount = 0;
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// WebSocket с 8KB чанками и server ACK
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var proto = location.protocol === 'https:' ? 'wss:' : 'ws:';
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var wsUrl = proto + '//' + location.host + '/ws-upload';
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for (var i = 0; i < files.length; i++) {
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var f = files[i];
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if (f.status === 'ok') continue;
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f.status = 'uploading';
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f.progress = 0;
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renderTable();
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try {
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var result = await uploadFileWS(wsUrl, f, i);
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f.status = 'ok';
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f.elapsed = result.elapsed_ms;
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f.speed = result.elapsed_ms > 0 ? Math.round(result.bytes / (result.elapsed_ms / 1000)) : null;
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totalBytes += result.bytes;
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totalElapsed += result.elapsed_ms;
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okCount++;
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} catch (e) {
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f.status = 'err';
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f.error = e.message;
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errCount++;
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}
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renderTable();
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}
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uploading = false;
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renderTable();
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var summary = files.length + ' файл.';
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if (okCount > 0) {
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var avgSpeed = totalElapsed > 0 ? Math.round(totalBytes / (totalElapsed / 1000)) : 0;
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summary += ' | ✓ ' + okCount + ' / ✗ ' + errCount;
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summary += ' | ' + formatSize(totalBytes) + ' за ' + (totalElapsed / 1000).toFixed(1) + 'с';
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summary += ' | ~' + formatSpeed(avgSpeed);
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}
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fileSummary.textContent = summary;
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}
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/** uploadFileWS(url, f, idx) — WebSocket с 8KB чанками и server ACK */
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function uploadFileWS(url, f, idx) {
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return new Promise(function (resolve, reject) {
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var ws = new WebSocket(url);
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var CHUNK = 8 * 1024;
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var offset = 0;
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var startTime = Date.now();
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var lastProgress = 0;
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var timer;
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ws.binaryType = 'arraybuffer';
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ws.onopen = function () {
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readNext();
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};
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function readNext() {
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var end = Math.min(offset + CHUNK, f.size);
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var reader = new FileReader();
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reader.onload = function (e) {
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ws.send(e.target.result);
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};
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reader.readAsArrayBuffer(f.file.slice(offset, end));
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}
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ws.onmessage = function (e) {
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try {
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var r = JSON.parse(e.data);
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if (r.ack) {
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offset = r.ack;
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var pct = Math.round(offset / f.size * 100);
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if (pct - lastProgress >= 10) {
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lastProgress = pct;
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f.progress = pct;
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renderTable();
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}
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if (offset < f.size) {
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readNext();
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} else {
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ws.send('DONE');
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}
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} else if (r.ok) {
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clearTimeout(timer);
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f.progress = 100;
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renderTable();
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ws.close();
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resolve({ bytes: r.bytes, elapsed_ms: Date.now() - startTime });
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}
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} catch (err) {
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reject(new Error('Bad response'));
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}
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};
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ws.onerror = function () { reject(new Error('WebSocket error')); };
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ws.onclose = function () {
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if (offset < f.size) reject(new Error('WS closed early'));
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};
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timer = setTimeout(function () {
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ws.close();
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reject(new Error('Timeout'));
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}, 300000);
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});
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}
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// HTTP upload больше не используется
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function uploadFileHTTP() {}
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// WebSocket upload больше не используется; оставлен для справки
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function uploadFileWS() {}
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/** clearAll() — очистить всё */
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function clearAll() {
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if (uploading) return;
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files = [];
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renderTable();
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}
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/** escHtml(s) — экранирование HTML */
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function escHtml(s) {
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if (s == null) return '';
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var d = document.createElement('div');
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d.textContent = s;
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return d.innerHTML;
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}
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// Первичный рендер
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renderTable();
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