zone_alarm/web/mobile.html

<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<title>钢包视频监测</title>
<link rel="icon" href="/logo.png" type="image/png">
<style>
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{font-family:system-ui,sans-serif;background:#0b1220;color:#e8e8e8;height:100vh;overflow:hidden}
.hidden{display:none!important}

/* 登录 */
#loginPage{display:flex;flex-direction:column;justify-content:center;align-items:center;height:100vh;padding:24px;background:#0b1220}
#loginPage .logo{width:64px;height:64px;margin-bottom:16px}
#loginPage h1{font-size:20px;margin-bottom:24px;color:#e94560}
#loginPage input{width:100%;max-width:320px;padding:12px 14px;margin-bottom:12px;border:1px solid #0f3460;background:#0e1426;color:#eee;font-size:16px;border-radius:6px}
#loginPage button{width:100%;max-width:320px;padding:12px;background:#e94560;color:#fff;border:none;font-size:16px;border-radius:6px;cursor:pointer}
#loginErr{color:#e94560;font-size:13px;margin-bottom:12px;min-height:18px}

/* 主界面 */
#appPage{display:flex;flex-direction:column;height:100vh}
.topbar{display:flex;align-items:center;padding:10px 12px;background:#0e1426;border-bottom:1px solid #0f3460;flex-shrink:0}
.topbar h2{font-size:16px;flex:1;color:#eee}
.topbar .tab{display:flex;gap:4px}
.topbar .tab button{padding:6px 12px;background:transparent;border:none;color:#8892a8;font-size:14px;cursor:pointer;border-radius:4px}
.topbar .tab button.active{background:#182242;color:#e94560;font-weight:bold}

/* 视频页 */
#videoPage{flex:1;display:flex;flex-direction:column;overflow:hidden}
#videoWrap{flex:1;position:relative;background:#000;min-height:0}
#videoWrap img{width:100%;height:100%;object-fit:contain;display:block}
#videoLoader{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#888}
#bgState{display:none;position:absolute;top:8px;left:50%;transform:translateX(-50%);background:rgba(233,69,96,.9);color:#fff;font-size:12px;padding:5px 12px;border-radius:4px}
.chSwitcher{display:flex;overflow-x:auto;padding:8px;background:#0e1426;border-top:1px solid #0f3460;flex-shrink:0}
.chSwitcher button{padding:8px 14px;margin-right:8px;background:#0f3460;border:none;color:#eee;border-radius:4px;font-size:13px;white-space:nowrap;cursor:pointer}
.chSwitcher button.active{background:#e94560}

/* 报警页 */
#alarmPage{flex:1;overflow-y:auto;padding:12px}
#alarmMore{text-align:center;color:#8892a8;font-size:13px;padding:16px;display:none}
.filterBar{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.filterBar select,.filterBar input{padding:8px;background:#0e1426;border:1px solid #0f3460;color:#eee;font-size:13px;border-radius:4px}
.filterBar select{flex:1;min-width:100px}
.filterBar input[type=datetime-local]{flex:1;min-width:130px}
.alarmItem{display:flex;gap:10px;padding:10px;margin-bottom:10px;background:#0e1426;border:1px solid #0f3460;border-left:4px solid #e94560;border-radius:6px}
.alarmItem img{width:72px;height:54px;object-fit:cover;border-radius:4px;flex-shrink:0}
.alarmItem .info{flex:1;min-width:0}
.alarmItem .time{font-size:11px;color:#888;margin-bottom:4px}
.alarmItem .type{font-size:14px;font-weight:bold;margin-bottom:2px}
.alarmItem .meta{font-size:12px;color:#aaa}
.alarmItem .conf{font-size:12px;color:#27ae60}

/* 详情弹窗 */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:50;display:none;flex-direction:column}
.modal.show{display:flex}
.modal img{flex:1;object-fit:contain;min-height:0}
.modal .mbar{display:flex;align-items:center;padding:10px 14px;background:#0e1426;border-top:1px solid #0f3460}
.modal .mbar .minfo{flex:1;font-size:13px}
.modal .mbar button{padding:8px 16px;background:#e94560;border:none;color:#fff;border-radius:4px;font-size:14px}

.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%);background:rgba(233,69,96,.95);color:#fff;padding:10px 18px;border-radius:6px;font-size:14px;z-index:99;display:none}
.empty-tip{text-align:center;color:#666;padding:40px 0;font-size:14px}
</style>
</head>
<body>

<div id="loginPage">
  <img class="logo" src="/logo.png">
  <h1>钢包视频监测</h1>
  <div id="loginErr"></div>
  <input type="text" id="loginUser" placeholder="用户名" value="admin">
  <input type="password" id="loginPass" placeholder="密码" value="admin">
  <button onclick="doLogin()">登 录</button>
</div>

<div id="appPage" class="hidden">
  <div class="topbar">
    <h2 id="pageTitle">视频监控</h2>
    <div class="tab">
      <button id="tabVideo" class="active" onclick="switchTab('video')">视频</button>
      <button id="tabAlarm" onclick="switchTab('alarm')">报警</button>
    </div>
  </div>

  <div id="videoPage">
    <div id="videoWrap">
      <img id="video" alt="">
      <div id="videoLoader">加载中...</div>
      <div id="bgState">后台运行中（视频已暂停）</div>
    </div>
    <div class="chSwitcher" id="chSwitcher"></div>
  </div>

  <div id="alarmPage" class="hidden">
    <div class="filterBar">
      <select id="fltType" onchange="loadAlarms(true)">
        <option value="">全部类型</option>
        <option value="fence">围栏报警</option>
        <option value="pose">姿态报警</option>
      </select>
      <select id="fltCh" onchange="loadAlarms(true)"><option value="">全部通道</option></select>
      <input type="datetime-local" id="fltStart">
      <input type="datetime-local" id="fltEnd">
      <button onclick="loadAlarms(true)" style="padding:8px 12px;background:#e94560;border:none;color:#fff;border-radius:4px">查询</button>
    </div>
    <div id="alarmList"></div>
    <div id="alarmMore">下拉加载更多</div>
  </div>
</div>

<div class="modal" id="detailModal">
  <img id="detailImg" alt="">
  <div class="mbar">
    <div class="minfo" id="detailInfo"></div>
    <button onclick="closeDetail()">关闭</button>
  </div>
</div>

<div class="toast" id="toast"></div>

<script>
let channels = [];
let curChannel = 0;
let curType = '';
let alarmItems = [];
let alarmPage = 0;
const alarmPageSize = 20;
let alarmLoading = false;
let alarmHasMore = false;
let videoTimer = null;
let videoBusy = false;
let videoUrl = '';

function toast(msg) {
  const t = document.getElementById('toast');
  t.textContent = msg;
  t.style.display = 'block';
  setTimeout(() => t.style.display = 'none', 2500);
}

async function doLogin() {
  const u = document.getElementById('loginUser').value;
  const p = document.getElementById('loginPass').value;
  try {
    const r = await fetch('/api/login', {
      method: 'POST',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({username: u, password: p})
    });
    const d = await r.json();
    if (d.ok) {
      document.getElementById('loginPage').classList.add('hidden');
      document.getElementById('appPage').classList.remove('hidden');
      init();
    } else {
      document.getElementById('loginErr').textContent = d.error || '登录失败';
    }
  } catch (e) {
    document.getElementById('loginErr').textContent = '网络错误';
  }
}

async function init() {
  await loadChannels();
  renderChSwitcher();
  switchChannel(0);
  notifyNativeReady();
}

// 通知 Android 宿主 H5 已就绪(宿主可据此开始转发生命周期事件)
function notifyNativeReady() {
  try {
    if (window.AndroidBridge && window.AndroidBridge.onWebReady) {
      window.AndroidBridge.onWebReady();
    }
  } catch (e) {}
}

async function loadChannels() {
  try {
    const r = await fetch('/api/status');
    if (r.status === 401) { location.reload(); return; }
    const d = await r.json();
    channels = d.channels || [];
    const sel = document.getElementById('fltCh');
    sel.innerHTML = '<option value="">全部通道</option>' +
      channels.map(c => `<option value="${c.id}">CH${c.id} ${c.name||''}</option>`).join('');
  } catch (e) {}
}

function renderChSwitcher() {
  const sw = document.getElementById('chSwitcher');
  sw.innerHTML = channels.map(c =>
    `<button data-ch="${c.id}" class="${c.id===curChannel?'active':''}" onclick="switchChannel(${c.id})">CH${c.id} ${c.name||''}</button>`).join('');
}

function switchChannel(id) {
  curChannel = id;
  renderChSwitcher();
  startVideoPolling(id);
}

// 手机浏览器对multipart MJPEG兼容性不一致, 使用单帧JPEG轮询保证兼容
function startVideoPolling(id) {
  stopVideoPolling();
  const v = document.getElementById('video');
  videoUrl = '/stream/' + id;
  videoBusy = false;
  document.getElementById('videoLoader').textContent = '加载中...';
  document.getElementById('videoLoader').style.display = 'block';
  const next = () => {
    if (curChannel !== id) return;
    // 后台运行时不拉流(省流量/CPU), 回前台由 setBackground 恢复
    if (isBackground) { videoTimer = setTimeout(next, 500); return; }
    const img = new Image();
    videoBusy = true;
    img.onload = () => {
      if (curChannel === id) {
        v.src = img.src;
        document.getElementById('videoLoader').style.display = 'none';
      }
      videoBusy = false;
      videoTimer = setTimeout(next, 100);
    };
    img.onerror = () => {
      videoBusy = false;
      document.getElementById('videoLoader').textContent = '视频加载失败，重试中...';
      videoTimer = setTimeout(next, 1000);
    };
    img.src = videoUrl + '?t=' + Date.now();
  };
  next();
}

function stopVideoPolling() {
  if (videoTimer) { clearTimeout(videoTimer); videoTimer = null; }
  videoBusy = false;
}

/* ============ 后台运行检测 ============
 * 三种来源:
 *  1) Android WebView 原生回调 (最可靠, 宿主 onPause/onResume 时调用)
 *  2) Page Visibility API (浏览器/部分WebView支持)
 *  3) 心跳兜底: 定时器被系统挂起时, 恢复后检测时间跳变判定经过后台
 * ======================================= */
let isBackground = false;
let lastHeartbeat = Date.now();

function setBackground(bg) {
  if (isBackground === bg) return;
  isBackground = bg;
  const badge = document.getElementById('bgState');
  if (badge) {
    badge.textContent = '后台运行中（视频已暂停）';
    badge.style.display = bg ? 'block' : 'none';
  }
  if (bg) {
    stopVideoPolling();          // 进后台: 停止拉流省流量
  } else if (!document.getElementById('videoPage').classList.contains('hidden')) {
    startVideoPolling(curChannel); // 回前台: 恢复
  }
}

// 1) 供 Android 原生调用: webView.evaluateJavascript("onAndroidLifecycle('pause')")
window.onAndroidLifecycle = function(state) {
  setBackground(state === 'pause' || state === 'background' || state === 'stop');
};
window.onNativeBackground = function() { setBackground(true); };
window.onNativeForeground = function() { setBackground(false); };

// 2) 浏览器 Page Visibility API
document.addEventListener('visibilitychange', () => {
  setBackground(document.hidden);
});
window.addEventListener('blur', () => { /* 仅失焦不一定是后台, 不处理 */ });
window.addEventListener('pagehide', () => setBackground(true));
window.addEventListener('pageshow', () => setBackground(false));

// 3) 心跳兜底: 定时器被挂起后, 间隔异常变大说明经历过后台
setInterval(() => {
  const now = Date.now();
  const gap = now - lastHeartbeat;
  lastHeartbeat = now;
  if (gap > 3000 && !document.hidden) {
    // 定时器被冻结超过3秒后恢复 -> 刚从后台回来
    setBackground(false);
  }
}, 1000);

function switchTab(tab) {
  document.getElementById('tabVideo').classList.toggle('active', tab==='video');
  document.getElementById('tabAlarm').classList.toggle('active', tab==='alarm');
  document.getElementById('videoPage').classList.toggle('hidden', tab!=='video');
  document.getElementById('alarmPage').classList.toggle('hidden', tab!=='alarm');
  if (tab === 'alarm') {
    stopVideoPolling();          // 看报警时暂停视频拉流, 省流量
    loadAlarms(true);
  } else if (!document.hidden) {
    startVideoPolling(curChannel); // 回到视频页恢复
  }
}

function poseColor(a) {
  const m = {'跌倒':'#e94560','倒地':'#e94560','举手呼救':'#f39c12','异常蹲坐':'#3498db','半躺':'#9b59b6','手近嘴部':'#e67e22','疲劳瞌睡':'#8e44ad','长时间静止':'#2c3e50','疑似离岗':'#c0392b'};
  return m[a] || '#8892a8';
}

function renderAlarmPage() {
  const start = alarmPage * alarmPageSize;
  const page = alarmItems.slice(start, start + alarmPageSize);
  alarmPage++;
  alarmHasMore = start + alarmPageSize < alarmItems.length;
  const list = document.getElementById('alarmList');
  list.insertAdjacentHTML('beforeend', page.map(a => `
    <div class="alarmItem" style="border-left-color:${a.color}" onclick="showDetail('${a.img}','${a.ts}','${a.label}','${a.detail}',${a.conf},${a.ch})">
      <img src="/${a.img}" loading="lazy">
      <div class="info">
        <div class="time">${a.ts} · CH${a.ch}</div>
        <div class="type" style="color:${a.color}">${a.label}</div>
        <div class="meta">${a.detail}</div>
        <div class="conf">${(a.conf*100).toFixed(0)}%</div>
      </div>
    </div>`).join(''));
  document.getElementById('alarmMore').style.display = alarmHasMore ? 'block' : 'none';
}
async function loadAlarms(reset = false) {
  if (alarmLoading) return;
  if (!reset && alarmItems.length && alarmHasMore) { renderAlarmPage(); return; }
  alarmLoading = true;
  alarmItems = []; alarmPage = 0; alarmHasMore = true;
  document.getElementById('alarmList').innerHTML = '';
  const type = document.getElementById('fltType').value;
  const ch = document.getElementById('fltCh').value;
  const st = document.getElementById('fltStart').value.replace('T',' ');
  const en = document.getElementById('fltEnd').value.replace('T',' ');
  const qs = new URLSearchParams();
  qs.set('limit', '100');
  if (ch) qs.set('channel', ch);
  if (st) qs.set('start', st + ':00');
  if (en) qs.set('end', en + ':59');
  try {
    const [fr, pr] = await Promise.all([fetch('/api/alarms?' + qs), fetch('/api/pose/alarms?' + qs)]);
    const fd = await fr.json(), pd = await pr.json();
    const fence = (fd.items||[]).map(a => ({t:'围栏', ts:a.timestamp, ch:a.channel, label:a.fence_name, detail:a.class_name, conf:a.confidence, img:a.screenshot, color:'#27ae60'}));
    const pose = (pd.items||[]).map(a => ({t:a.action, ts:a.timestamp, ch:a.channel, label:a.action, detail:'姿态', conf:a.score, img:a.screenshot, color:poseColor(a.action)}));
    alarmItems = type==='fence' ? fence : type==='pose' ? pose : [...fence, ...pose];
    alarmItems.sort((a,b) => b.ts.localeCompare(a.ts));
    if (!alarmItems.length) {
      document.getElementById('alarmList').innerHTML = '<div class="empty-tip">暂无报警记录</div>';
      document.getElementById('alarmMore').style.display = 'none';
    } else renderAlarmPage();
  } catch (e) {}
  alarmLoading = false;
}

function showDetail(img, ts, label, detail, conf, ch) {
  document.getElementById('detailImg').src = '/' + img;
  document.getElementById('detailInfo').innerHTML =
    `<b>${label}</b> ${(conf*100).toFixed(0)}%<br>时间: ${ts}<br>通道: CH${ch}<br>详情: ${detail}`;
  document.getElementById('detailModal').classList.add('show');
}
function closeDetail() { document.getElementById('detailModal').classList.remove('show'); }

document.getElementById('alarmPage').addEventListener('scroll', () => {
  const el = document.getElementById('alarmPage');
  if (el.scrollTop + el.clientHeight >= el.scrollHeight - 80 && alarmHasMore && !alarmLoading) {
    loadAlarms(false);
  }
});

// 每10秒刷新报警列表(回到第一页)
setInterval(() => {
  if (!document.getElementById('alarmPage').classList.contains('hidden')) loadAlarms(true);
}, 10000);
</script>
</body>
</html>