let instances = []
let statuses = new Map()
let catalog = []
let activeId = null
let activeFilter = 'all'
let activeModule = 'all'
let configPath = 'config.json'
let autoRefreshTimer = null

const $ = (id) => document.getElementById(id)
const $$ = (selector, root = document) => [...root.querySelectorAll(selector)]

const modules = [
  { id: 'overview', title: '设备总览', desc: '设备、SIM、网络、连接状态与流量统计。适合日常巡检和资产核对。', tone: 'ok', endpoints: ['/api/device', '/api/sim', '/api/network', '/api/stats', '/api/connectivity'] },
  { id: 'sms', title: '短信中心', desc: '短信统计、列表、会话读取与短信发送。发送类接口请先在 API 工作台确认请求体。', tone: 'warn', endpoints: ['/api/sms/stats', '/api/sms/list', '/api/sms/conversation', '/api/sms/send'] },
  { id: 'network', title: '蜂窝网络', desc: '数据开关、漫游、飞行模式、无线制式、频段/小区锁定与 APN。', tone: 'danger', endpoints: ['/api/data', '/api/roaming', '/api/airplane-mode', '/api/radio-mode', '/api/band-lock', '/api/cell-lock', '/api/apn', '/api/cells'] },
  { id: 'device-network', title: '设备网络', desc: 'WLAN、DDNS、连接地址与局域网访问能力。', tone: 'neutral', endpoints: ['/api/device-network/wlan/status', '/api/device-network/wlan/profiles', '/api/device-network/ddns/status', '/api/device-network/ddns/config', '/api/network/connection-addresses'] },
  { id: 'calls', title: '电话能力', desc: '通话列表、历史记录、IMS 与语音信箱状态。', tone: 'neutral', endpoints: ['/api/calls', '/api/call/history', '/api/ims/status', '/api/voicemail/status'] },
  { id: 'esim', title: 'eSIM / 工作模式', desc: 'eUICC、profile、LPAC 状态、工作模式与 eSIM 配置。', tone: 'warn', endpoints: ['/api/work-mode', '/api/esim/config', '/api/esim/lpac/status', '/api/esim/euicc', '/api/esim/profiles'] },
  { id: 'notify-auto-ota', title: '通知 / 自动化 / OTA', desc: '通知配置与日志、自动化任务日志、在线升级状态。', tone: 'neutral', endpoints: ['/api/notifications/config', '/api/notifications/logs', '/api/automation/config', '/api/automation/logs', '/api/ota/status'] },
]

function escapeHtml(text) {
  return String(text ?? '').replace(/[&<>"']/g, ch => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' }[ch]))
}
function value(v) { return v === undefined || v === null || v === '' ? '-' : String(v) }
function boolText(v) {
  if (v === true) return '开启'
  if (v === false) return '关闭'
  return value(v)
}
function activeInstance() { return instances.find(x => x.id === activeId) }
function activeStatus() { return statuses.get(activeId) }
function tagsFromInput(text) { return String(text || '').split(',').map(x => x.trim()).filter(Boolean) }
function instancePayloadFromForm() {
  return {
    id: $('instanceIdInput').value.trim(),
    name: $('instanceNameInput').value.trim(),
    url: $('instanceUrlInput').value.trim(),
    description: $('instanceDescInput').value.trim(),
    tags: tagsFromInput($('instanceTagsInput').value),
    auth: { password: $('instancePasswordInput').value },
  }
}
function statusKind(s) {
  if (!s) return 'unknown'
  if (!s.reachable) return 'offline'
  if (s.authenticated === false) return 'auth'
  return 'online'
}
function statusText(s) {
  const kind = statusKind(s)
  if (kind === 'online') return `在线${s.latencyMs != null ? ` ${s.latencyMs}ms` : ''}`
  if (kind === 'auth') return '需登录'
  if (kind === 'offline') return '离线'
  return '未知'
}
function pillClass(s) {
  const kind = statusKind(s)
  if (kind === 'online') return 'ok'
  if (kind === 'auth') return 'warn'
  if (kind === 'offline') return 'bad'
  return ''
}
function showToast(message, timeout = 2600) {
  const toast = $('toast')
  toast.textContent = message
  toast.hidden = false
  clearTimeout(showToast._timer)
  showToast._timer = setTimeout(() => { toast.hidden = true }, timeout)
}
function flattenEndpoints() {
  return [...new Set([
    ...catalog.flatMap(g => g.endpoints || []),
    ...modules.flatMap(m => m.endpoints || []),
  ])].sort()
}
function inferMethod(endpoint) {
  if (/send|config|data$|roaming$|airplane-mode$|radio-mode$|band-lock$|cell-lock$|work-mode|login|logout/i.test(endpoint)) return 'POST'
  return 'GET'
}
function proxiedUrl(endpoint) {
  if (!activeId) return null
  const normalized = endpoint.startsWith('/') ? endpoint : `/${endpoint}`
  return `/api/proxy/${encodeURIComponent(activeId)}${normalized}`
}

function firstValue(...items) {
  for (const item of items) if (item !== undefined && item !== null && item !== '') return item
  return null
}
function formatBytes(n) {
  if (n === undefined || n === null || n === '') return '-'
  const num = Number(n)
  if (!Number.isFinite(num)) return value(n)
  const units = ['B', 'KB', 'MB', 'GB', 'TB']
  let size = Math.abs(num)
  let i = 0
  while (size >= 1024 && i < units.length - 1) { size /= 1024; i += 1 }
  const signed = num < 0 ? -size : size
  return `${signed.toFixed(size >= 10 || i === 0 ? 0 : 1)} ${units[i]}`
}
function formatSpeed(speed) {
  if (!speed || typeof speed !== 'object') return '-'
  if (Array.isArray(speed.interfaces)) {
    return speed.interfaces.map(item => `${item.interface || 'net'} ↓ ${formatBytes(firstValue(item.rx_bytes_per_sec, item.rx, item.download))}/s · ↑ ${formatBytes(firstValue(item.tx_bytes_per_sec, item.tx, item.upload))}/s`).join(' ｜ ')
  }
  const rx = firstValue(speed.rx, speed.download, speed.recv, speed.received, speed.rx_bytes_per_sec)
  const tx = firstValue(speed.tx, speed.upload, speed.sent, speed.tx_bytes_per_sec)
  return `↓ ${formatBytes(rx)}/s · ↑ ${formatBytes(tx)}/s`
}
function formatTemperature(temp) {
  if (temp === undefined || temp === null || temp === '') return '-'
  if (typeof temp === 'number') return `${temp}℃`
  if (typeof temp === 'string') return temp.includes('°') || temp.includes('℃') ? temp : `${temp}℃`
  if (Array.isArray(temp)) {
    return temp.map(item => `${item.type || item.zone || 'temp'}: ${value(item.temperature)}℃`).join(' ｜ ') || '-'
  }
  if (typeof temp === 'object') {
    return Object.entries(temp).map(([k, v]) => `${k}: ${typeof v === 'number' ? `${v}℃` : value(v)}`).join(' · ') || '-'
  }
  return value(temp)
}
function formatPercentPair(obj) {
  if (!obj || typeof obj !== 'object') return '-'
  if (Array.isArray(obj)) {
    return obj.map(item => `${item.mount_point || item.name || 'disk'} ${formatPercentPair(item)}`).join(' ｜ ')
  }
  const used = Number(firstValue(obj.used, obj.used_bytes))
  const total = Number(firstValue(obj.total, obj.total_bytes))
  const percent = Number(firstValue(obj.used_percent, obj.percent))
  if (Number.isFinite(used) && Number.isFinite(total) && total > 0) return `${formatBytes(used)} / ${formatBytes(total)} (${Math.round(Number.isFinite(percent) ? percent : used / total * 100)}%)`
  const available = firstValue(obj.available, obj.available_bytes, obj.free, obj.free_bytes)
  if (available != null && total) return `可用 ${formatBytes(available)} / 总 ${formatBytes(total)}`
  return Object.entries(obj).map(([k, v]) => `${k}: ${typeof v === 'number' ? formatBytes(v) : value(v)}`).join(' · ') || '-'
}
function formatUptime(seconds) {
  if (seconds && typeof seconds === 'object') return seconds.uptime_formatted || seconds.formatted || formatUptime(seconds.uptime_seconds)
  const n = Number(seconds)
  if (!Number.isFinite(n)) return value(seconds)
  const d = Math.floor(n / 86400)
  const h = Math.floor((n % 86400) / 3600)
  const m = Math.floor((n % 3600) / 60)
  return [d ? `${d}天` : '', h ? `${h}小时` : '', `${m}分`].filter(Boolean).join(' ')
}
function metricCard(label, val, tone = '') {
  return `<div class="metric monitor-metric ${tone}"><span>${escapeHtml(label)}</span><b title="${escapeHtml(value(val))}">${escapeHtml(value(val))}</b></div>`
}
function detailCard(title, rows, tone = '') {
  return `<article class="device-info-card ${tone}"><h4>${escapeHtml(title)}</h4><dl>${rows.map(([k, v]) => `<div><dt>${escapeHtml(k)}</dt><dd title="${escapeHtml(value(v))}">${escapeHtml(value(v))}</dd></div>`).join('')}</dl></article>`
}
function getMonitorData() {
  const item = activeInstance()
  const s = activeStatus()
  const sum = s?.summary || {}
  return { item, s, sum, device: sum.device || {}, sim: sum.sim || {}, network: sum.network || {}, data: sum.data || {}, sms: sum.sms || {}, ota: sum.ota || {}, system: sum.system || {} }
}

function renderFleetStats() {
  const total = instances.length
  const counts = { online: 0, auth: 0, offline: 0, unknown: 0 }
  for (const inst of instances) counts[statusKind(statuses.get(inst.id))] += 1
  $('fleetStats').innerHTML = [
    ['全部', total], ['在线', counts.online], ['需登录', counts.auth], ['离线', counts.offline],
  ].map(([label, num]) => `<div class="fleet-card"><b>${num}</b><span>${label}</span></div>`).join('')
}

function filteredInstances() {
  const q = $('instanceSearch')?.value.trim().toLowerCase() || ''
  return instances.filter(item => {
    const s = statuses.get(item.id)
    const kind = statusKind(s)
    if (activeFilter !== 'all' && kind !== activeFilter) return false
    if (!q) return true
    const haystack = [item.id, item.name, item.url, item.description, JSON.stringify(s?.summary || {})].join(' ').toLowerCase()
    return haystack.includes(q)
  })
}

function deviceSummary(item) {
  const s = statuses.get(item.id)
  const sum = s?.summary || {}
  return { item, s, sum, device: sum.device || {}, sim: sum.sim || {}, network: sum.network || {}, data: sum.data || {}, sms: sum.sms || {}, ota: sum.ota || {}, system: sum.system || {} }
}

function renderHomeCards() {
  const root = $('homeDeviceGrid')
  renderFleetStats()
  if (!instances.length) {
    root.innerHTML = '<section class="empty-state mini-empty"><h3>未配置设备</h3><p>点击“添加设备”新增 SimAdmin 地址后，这里会出现设备卡片。</p></section>'
    return
  }
  const list = filteredInstances()
  if (!list.length) {
    root.innerHTML = '<section class="empty-state"><h3>没有匹配设备</h3><p>调整搜索关键字或状态筛选。</p></section>'
    return
  }
  root.innerHTML = list.map(item => {
    const { s, device, sim, network, data, sms, system, ota } = deviceSummary(item)
    const dataState = firstValue(data.active, data.connected, data.enabled)
    return `<article class="sim-device-card ${pillClass(s)}" data-open-detail="${escapeHtml(item.id)}" role="button" tabindex="0" aria-label="打开 ${escapeHtml(item.name || item.id)} 详情">
      <div class="sim-card-head">
        <div>
          <p class="eyebrow">${escapeHtml(item.id)}</p>
          <h2>${escapeHtml(item.name || item.id)}</h2>
          <span class="instance-url">${escapeHtml(item.url)}</span>
        </div>
        <span class="status-pill ${pillClass(s)}">${escapeHtml(statusText(s))}</span>
      </div>
      <div class="sim-card-model">${escapeHtml(value([device.manufacturer, device.model].filter(Boolean).join(' ') || device.imei || '未知设备'))}</div>
      <div class="sim-card-kpis">
        <span><em>SIM</em><b>${escapeHtml(sim.present === false ? '未插卡' : value(sim.iccid))}</b></span>
        <span><em>信号</em><b>${escapeHtml(value(firstValue(network.signal, sim.signal)))}</b></span>
        <span><em>温度</em><b>${escapeHtml(formatTemperature(system.temperature))}</b></span>
        <span><em>流量</em><b>${escapeHtml(formatSpeed(system.networkSpeed))}</b></span>
        <span><em>数据</em><b>${escapeHtml(dataState === true ? '已连接' : dataState === false ? '未连接' : '-')}</b></span>
        <span><em>短信</em><b>${escapeHtml(sms.total != null ? `总 ${sms.total}` : '-')}</b></span>
      </div>
      <div class="sim-card-foot">
        <span>${escapeHtml(value(network.operator || sim.operator || network.registration))}</span>
        <span>${escapeHtml(value(ota.currentVersion || device.firmware || device.revision))}</span>
      </div>
    </article>`
  }).join('')
  $$('[data-open-detail]', root).forEach(card => {
    const open = () => openDeviceDetail(card.dataset.openDetail)
    card.addEventListener('click', open)
    card.addEventListener('keydown', (event) => {
      if (event.key === 'Enter' || event.key === ' ') { event.preventDefault(); open() }
    })
  })
}

function renderInstances() { renderHomeCards() }

function openDeviceDetail(id) {
  const item = instances.find(x => x.id === id)
  if (!item) return
  activeId = id
  localStorage.setItem('multi-simadmin-active', id)
  $('loginBtn').disabled = false
  $('openExternal').href = item.url
  $('openExternal').classList.remove('disabled')
  $('emptyState').hidden = true
  $('frame').hidden = false
  $('frame').src = item.url
  switchView('detail')
  renderHomeCards()
  renderOverview()
  renderDeviceDetails()
  renderDetailActions()
}

function setActiveHome() {
  activeId = null
  localStorage.removeItem('multi-simadmin-active')
  $('loginBtn').disabled = true
  $('openExternal').href = '#'
  $('openExternal').classList.add('disabled')
  $('emptyState').hidden = false
  $('frame').hidden = true
  $('frame').removeAttribute('src')
  switchView('home')
  renderHomeCards()
}

function renderHero() {
  const { item, s, device, sim, network, system, data, ota } = getMonitorData()
  if (!item) {
    $('activeKicker').textContent = 'DEVICE DETAIL'
    $('activeName').textContent = '选择一个 SimAdmin 设备'
    $('activeMeta').textContent = '从首页卡片进入详情页后，可查看状态并使用功能交互。'
    $('signalPanel').innerHTML = [
      ['状态', '等待选择'], ['设备', '-'], ['温度', '-'], ['流量速率', '-'],
    ].map(([k, v]) => `<div class="signal-item"><span>${k}</span><b>${v}</b></div>`).join('')
    return
  }
  $('activeKicker').textContent = `${item.id} · ${statusText(s)}`
  $('activeName').textContent = `${item.name || item.id} 详情页`
  $('activeMeta').textContent = `${device.manufacturer || ''} ${device.model || ''}`.trim() || item.url
  $('signalPanel').innerHTML = [
    ['在线状态', statusText(s)],
    ['SIM / 运营商', `${sim.present === false ? '未插卡' : '已插卡'} · ${value(network.operator || sim.operator)}`],
    ['信号 / 制式', `${value(network.signal || sim.signal)} · ${value(network.accessTechnology || network.registration)}`],
    ['温度', formatTemperature(system.temperature)],
    ['流量速率', formatSpeed(system.networkSpeed)],
    ['数据连接', firstValue(data.active, data.connected, data.enabled) === true ? '已连接' : firstValue(data.active, data.connected, data.enabled) === false ? '未连接' : '-'],
    ['系统负载', Array.isArray(system.cpuLoad) ? system.cpuLoad.join(' / ') : value(system.cpuLoad)],
    ['版本', value(ota.currentVersion || device.firmware || device.revision)],
  ].map(([k, v]) => `<div class="signal-item"><span>${escapeHtml(k)}</span><b title="${escapeHtml(value(v))}">${escapeHtml(value(v))}</b></div>`).join('')
}

function renderOverview() {
  const { item, s, sim, network, data, sms, system } = getMonitorData()
  if (!item) return
  const dataState = firstValue(data.active, data.connected, data.enabled)
  $('overview').innerHTML = [
    metricCard('状态', s ? (s.reachable ? (s.authenticated === false ? '在线/未登录' : '在线') : '离线') : '未知', pillClass(s)),
    metricCard('延迟', s?.latencyMs != null ? `${s.latencyMs}ms` : '-'),
    metricCard('信号', firstValue(network.signal, sim.signal), 'signal'),
    metricCard('温度', formatTemperature(system.temperature), 'temperature'),
    metricCard('流量速率', formatSpeed(system.networkSpeed), 'traffic'),
    metricCard('数据连接', dataState === true ? '已连接' : dataState === false ? '未连接' : '-'),
    metricCard('SIM', sim.present === false ? '未插卡' : value(sim.iccid)),
    metricCard('短信', sms.total != null ? `总 ${sms.total} / 收 ${value(sms.incoming)} / 发 ${value(sms.outgoing)}` : '-'),
  ].join('')
  renderHero()
}

function renderDeviceDetails() {
  const { item, device, sim, network, data, sms, ota, system, s } = getMonitorData()
  if (!item) return
  $('detailDeviceGrid').innerHTML = [
    detailCard('设备信息', [
      ['名称', item.name || item.id], ['地址', item.url], ['型号', device.model], ['厂商', device.manufacturer], ['IMEI', device.imei], ['电源', boolText(device.powered)], ['在线', boolText(device.online)], ['固件/版本', ota.currentVersion || device.firmware || device.revision], ['Commit', ota.currentCommit],
    ], 'device'),
    detailCard('SIM 卡', [
      ['状态', sim.present === false ? '未插卡' : sim.present === true ? '已插卡' : '-'], ['ICCID', sim.iccid], ['IMSI', sim.imsi], ['号码', sim.phoneNumber], ['短信中心', sim.smsCenter], ['MCC/MNC', [network.mcc || sim.mcc, network.mnc || sim.mnc].filter(Boolean).join('/') || '-'],
    ], 'sim'),
    detailCard('蜂窝网络', [
      ['运营商', network.operator || sim.operator], ['注册状态', network.registration], ['网络制式', network.accessTechnology], ['信号强度', firstValue(network.signal, sim.signal)], ['数据连接', firstValue(data.active, data.connected, data.enabled) === true ? '已连接' : firstValue(data.active, data.connected, data.enabled) === false ? '未连接' : '-'], ['漫游', boolText(data.roaming)],
    ], 'network'),
    detailCard('温度 / 系统', [
      ['温度', formatTemperature(system.temperature)], ['CPU 负载', Array.isArray(system.cpuLoad) ? system.cpuLoad.join(' / ') : system.cpuLoad], ['内存', formatPercentPair(system.memory)], ['磁盘', formatPercentPair(system.disk)], ['运行时间', formatUptime(system.uptime)], ['系统', system.info ? Object.values(system.info).filter(Boolean).join(' · ') : '-'],
    ], 'system'),
    detailCard('流量 / 短信', [
      ['实时速率', formatSpeed(system.networkSpeed)], ['短信总数', sms.total], ['接收短信', sms.incoming], ['发送短信', sms.outgoing], ['推送成功', sms.pushed], ['通话记录', s?.summary?.calls?.calls?.length ?? '-'],
    ], 'traffic'),
  ].join('')
}

function renderDetailActions() {
  const disabled = activeId ? '' : ' disabled'
  const primary = [
    ['设备状态', '/api/device'], ['SIM 信息', '/api/sim'], ['蜂窝网络', '/api/network'], ['系统资源', '/api/stats'],
    ['短信统计', '/api/sms/stats'], ['通话记录', '/api/calls'], ['OTA 状态', '/api/ota/status'], ['数据连接', '/api/data'],
  ]
  $('detailActions').innerHTML = `
    <button type="button" class="detail-action raw-action" data-view="rawpage">打开原始管理页</button>
    ${primary.map(([label, ep]) => `<button type="button" class="detail-action"${disabled} data-detail-ep="${escapeHtml(ep)}"><span>${escapeHtml(label)}</span><code>${escapeHtml(ep)}</code></button>`).join('')}
  `
  $$('[data-detail-ep]', $('detailActions')).forEach(btn => btn.addEventListener('click', () => {
    switchView('api')
    $('endpointInput').value = btn.dataset.detailEp
    $('methodSelect').value = inferMethod(btn.dataset.detailEp)
    runEndpoint()
  }))
  $$('[data-view]', $('detailActions')).forEach(btn => btn.addEventListener('click', () => switchView(btn.dataset.view)))
}

function renderFeatures() { renderDeviceDetails(); renderDetailActions() }

function renderEndpointList() {
  const groups = catalog.length ? catalog : modules.map(m => ({ id: m.id, name: m.title, endpoints: m.endpoints }))
  $('endpointList').innerHTML = groups.map(group => `<section class="endpoint-group">
    <h4>${escapeHtml(group.name || group.id)}</h4>
    ${(group.endpoints || []).map(ep => `<button class="endpoint-row" data-ep="${escapeHtml(ep)}"><span>${escapeHtml(inferMethod(ep))}</span> ${escapeHtml(ep)}</button>`).join('')}
  </section>`).join('')
  $$('.endpoint-row', $('endpointList')).forEach(row => row.addEventListener('click', () => {
    $('endpointInput').value = row.dataset.ep
    $('methodSelect').value = inferMethod(row.dataset.ep)
    $$('.endpoint-row', $('endpointList')).forEach(x => x.classList.toggle('active', x === row))
  }))
}

function switchView(view) {
  if (!['home', 'detail', 'rawpage', 'api'].includes(view)) view = activeId ? 'detail' : 'home'
  $$('[data-view]').forEach(btn => btn.classList.toggle('active', btn.dataset.view === view))
  $$('.view').forEach(panel => panel.classList.toggle('active', panel.id === `${view}View`))
  localStorage.setItem('multi-simadmin-view', view)
}

function selectInstance(id) { openDeviceDetail(id) }

function openInstanceDialog(id = '') {
  const item = id ? instances.find(x => x.id === id) : null
  $('instanceOriginalId').value = item?.id || ''
  $('instanceFormRibbon').textContent = item ? '编辑设备地址' : '添加设备地址'
  $('instanceIdInput').value = item?.id || ''
  $('instanceNameInput').value = item?.name || ''
  $('instanceUrlInput').value = item?.url || ''
  $('instanceDescInput').value = item?.description || ''
  $('instanceTagsInput').value = (item?.tags || []).join(', ')
  $('instancePasswordInput').value = ''
  $('instancePasswordInput').placeholder = item?.auth?.hasPassword ? '留空将清除已保存密码；输入新密码可替换' : '留空表示无密码'
  $('deleteInstanceBtn').hidden = !item
  $('instanceDialog').showModal()
  setTimeout(() => (item ? $('instanceNameInput') : $('instanceIdInput')).focus(), 50)
}

async function reloadConfigAndRefresh({ selectId = activeId, toast = '' } = {}) {
  await loadConfig({ preserveSelection: selectId })
  await refreshStatus({ silent: true })
  if (selectId && instances.some(x => x.id === selectId)) selectInstance(selectId)
  else setActiveHome()
  if (toast) showToast(toast)
}

async function saveInstanceFromForm() {
  const originalId = $('instanceOriginalId').value
  const payload = instancePayloadFromForm()
  const method = originalId ? 'PUT' : 'POST'
  const url = originalId ? `/api/instances/${encodeURIComponent(originalId)}` : '/api/instances'
  const res = await fetch(url, { method, headers: { 'content-type': 'application/json' }, body: JSON.stringify(payload) })
  const data = await res.json().catch(() => ({}))
  if (!res.ok) throw new Error(data.error || `保存失败：HTTP ${res.status}`)
  $('instanceDialog').close()
  await reloadConfigAndRefresh({ selectId: data.instance?.id || payload.id, toast: originalId ? '设备地址已更新' : '设备地址已添加' })
}

async function deleteInstance(id) {
  const item = instances.find(x => x.id === id)
  if (!item) return
  if (!confirm(`确定删除设备“${item.name || item.id}”？\n配置会立即写入 config.json。`)) return
  const res = await fetch(`/api/instances/${encodeURIComponent(id)}`, { method: 'DELETE' })
  const data = await res.json().catch(() => ({}))
  if (!res.ok) {
    showToast(data.error || `删除失败：HTTP ${res.status}`, 4200)
    return
  }
  await reloadConfigAndRefresh({ selectId: null, toast: '设备地址已删除' })
}

async function deleteCurrentInstanceFromDialog() {
  const id = $('instanceOriginalId').value
  if (!id) return
  $('instanceDialog').close()
  await deleteInstance(id)
}

async function loadConfig({ preserveSelection = activeId } = {}) {
  const [configRes, catalogRes] = await Promise.all([fetch('/api/config'), fetch('/api/catalog')])
  if (!configRes.ok) throw new Error(`配置读取失败：HTTP ${configRes.status}`)
  const data = await configRes.json()
  instances = data.instances || []
  configPath = data.configPath || 'config.json'
  $('configPath').textContent = configPath
  if (catalogRes.ok) catalog = (await catalogRes.json()).groups || []
  const saved = preserveSelection || localStorage.getItem('multi-simadmin-active')
  activeId = saved && instances.some(x => x.id === saved) ? saved : null
  renderEndpointList()
  renderHomeCards()
  if (activeId) openDeviceDetail(activeId)
}

async function refreshStatus({ silent = false } = {}) {
  $('refreshBtn').disabled = true
  if (!silent) showToast('正在刷新全部实例…', 1200)
  try {
    const res = await fetch('/api/status')
    if (!res.ok) throw new Error(`状态读取失败：HTTP ${res.status}`)
    const data = await res.json()
    statuses = new Map((data.instances || []).map(item => [item.id, item]))
    renderHomeCards()
    if (activeId) {
      renderOverview()
      renderDeviceDetails()
      renderDetailActions()
    }
    if (!silent) showToast(`已刷新 ${statuses.size} 个实例`)
  } catch (error) {
    showToast(error.message || '刷新失败', 4200)
  } finally {
    $('refreshBtn').disabled = false
  }
}

async function loginActive() {
  if (!activeId) return
  const item = activeInstance()
  if (!item) return
  // If config already has a saved password, try direct refresh first; otherwise ask for password.
  if (item.auth?.hasPassword) {
    showToast('正在使用本地配置密码刷新会话…', 1600)
    const res = await fetch(`/api/instances/${encodeURIComponent(activeId)}/login`, { method: 'POST', headers: { 'content-type': 'application/json' }, body: JSON.stringify({}) })
    if (!res.ok) showToast(`登录失败：HTTP ${res.status}`, 4200)
    await refreshStatus({ silent: true })
    return
  }
  $('loginDialog').showModal()
  setTimeout(() => $('passwordInput').focus(), 50)
}

function parseBody() {
  const raw = $('requestBody').value.trim()
  if (!raw) return undefined
  return JSON.parse(raw)
}

async function runEndpoint() {
  if (!activeId) {
    showToast('请先在首页选择设备卡片')
    return
  }
  const endpoint = $('endpointInput').value.trim()
  const method = $('methodSelect').value
  if (!endpoint.startsWith('/')) {
    showToast('接口路径必须以 / 开头')
    return
  }
  $('rawOutput').textContent = '调用中…'
  try {
    const init = { method }
    if (method !== 'GET') {
      init.headers = { 'content-type': 'application/json' }
      const body = parseBody()
      if (body !== undefined) init.body = JSON.stringify(body)
    }
    const started = performance.now()
    const res = await fetch(proxiedUrl(endpoint), init)
    const elapsed = Math.round(performance.now() - started)
    const text = await res.text()
    let formatted = text
    try { formatted = JSON.stringify(JSON.parse(text), null, 2) } catch {}
    $('rawOutput').textContent = `HTTP ${res.status} · ${elapsed}ms · ${method} ${endpoint}\n\n${formatted}`
  } catch (error) {
    $('rawOutput').textContent = error.message || String(error)
    showToast('接口调用失败', 4200)
  }
}

function bindEvents() {
  $('refreshBtn').addEventListener('click', () => refreshStatus())
  $('homeBtn').addEventListener('click', setActiveHome)
  $('addInstanceBtn').addEventListener('click', () => openInstanceDialog())
  $('loginBtn').addEventListener('click', loginActive)
  $('runEndpoint').addEventListener('click', runEndpoint)
  $('instanceSearch').addEventListener('input', renderHomeCards)
  $('backToFleetBtn').addEventListener('click', setActiveHome)
  $('densityBtn').addEventListener('click', () => {
    document.body.classList.toggle('compact')
    localStorage.setItem('multi-simadmin-density', document.body.classList.contains('compact') ? 'compact' : 'normal')
  })
  $$('[data-view]').forEach(btn => btn.addEventListener('click', () => switchView(btn.dataset.view)))
  $$('#statusFilters .tab-leaf').forEach(btn => btn.addEventListener('click', () => {
    activeFilter = btn.dataset.filter
    $$('#statusFilters .tab-leaf').forEach(x => x.classList.toggle('active', x === btn))
    renderHomeCards()
  }))
  $('loginForm').addEventListener('submit', async (event) => {
    event.preventDefault()
    if (!activeId) return
    const password = $('passwordInput').value
    $('passwordInput').value = ''
    $('loginDialog').close()
    const res = await fetch(`/api/instances/${encodeURIComponent(activeId)}/login`, { method: 'POST', headers: { 'content-type': 'application/json' }, body: JSON.stringify({ password }) })
    if (!res.ok) showToast(`登录失败：HTTP ${res.status}`, 4200)
    else showToast('会话已刷新')
    await refreshStatus({ silent: true })
  })
  $('instanceForm').addEventListener('submit', async (event) => {
    event.preventDefault()
    try {
      await saveInstanceFromForm()
    } catch (error) {
      showToast(error.message || '保存失败', 5200)
    }
  })
  $('deleteInstanceBtn').addEventListener('click', deleteCurrentInstanceFromDialog)
  $('endpointInput').addEventListener('keydown', (event) => {
    if (event.key === 'Enter') runEndpoint()
  })
}

function restorePrefs() {
  if (localStorage.getItem('multi-simadmin-density') === 'compact') document.body.classList.add('compact')
  switchView(localStorage.getItem('multi-simadmin-view') || 'home')
}

try {
  restorePrefs()
  bindEvents()
  await loadConfig()
  await refreshStatus({ silent: true })
  autoRefreshTimer = setInterval(() => refreshStatus({ silent: true }), 30000)
  window.addEventListener('beforeunload', () => clearInterval(autoRefreshTimer))
} catch (error) {
  console.error(error)
  showToast(error.message || '初始化失败', 8000)
  $('rawOutput').textContent = error.stack || String(error)
}