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 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 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 renderInstances() {
  const root = $('instances')
  renderFleetStats()
  if (!instances.length) {
    root.innerHTML = '<section class="empty-state"><h3>未配置实例</h3><p>请编辑 config.json 添加 instances，并重启服务。</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 = statuses.get(item.id)
    const sum = s?.summary || {}
    const network = sum.network || {}
    const sim = sum.sim || {}
    return `<article class="instance-card ${item.id === activeId ? 'active' : ''}" data-id="${escapeHtml(item.id)}">
      <div class="instance-top">
        <div>
          <div class="instance-name">${escapeHtml(item.name || item.id)}</div>
          <div class="instance-url">${escapeHtml(item.url)}</div>
        </div>
        <span class="status-pill ${pillClass(s)}">${escapeHtml(statusText(s))}</span>
      </div>
      ${item.description ? `<p class="instance-desc">${escapeHtml(item.description)}</p>` : ''}
      <div class="mini-grid">
        <span>认证<b>${item.auth?.hasPassword ? '密码会话' : '无密码'}</b></span>
        <span>运营商<b>${escapeHtml(value(network.operator || sim.operator))}</b></span>
        <span>网络<b>${escapeHtml(value(network.accessTechnology || network.registration))}</b></span>
        <span>ICCID<b>${escapeHtml(value(sim.iccid))}</b></span>
      </div>
    </article>`
  }).join('')
  $$('.instance-card', root).forEach(card => card.addEventListener('click', () => selectInstance(card.dataset.id)))
}

function renderHero() {
  const item = activeInstance()
  const s = activeStatus()
  const sum = s?.summary || {}
  if (!item) {
    $('activeKicker').textContent = 'NO DEVICE SELECTED'
    $('activeName').textContent = '选择一个 SimAdmin 实例'
    $('activeMeta').textContent = '统一查看设备、SIM、网络、短信、eSIM、OTA 与原始管理页面。'
    $('signalPanel').innerHTML = [
      ['状态', '等待选择'], ['当前实例', '-'], ['会话', '-'], ['刷新', '-'],
    ].map(([k, v]) => `<div class="signal-item"><span>${k}</span><b>${v}</b></div>`).join('')
    return
  }
  $('activeKicker').textContent = item.id
  $('activeName').textContent = item.name || item.id
  $('activeMeta').textContent = item.description ? `${item.description} · ${item.url}` : item.url
  $('signalPanel').innerHTML = [
    ['状态', statusText(s)],
    ['设备', value(sum.device?.model || sum.device?.name)],
    ['运营商', value(sum.network?.operator || sum.sim?.operator)],
    ['网络', value(sum.network?.accessTechnology || sum.network?.registration)],
    ['短信', sum.sms ? `总 ${value(sum.sms.total)} / 未读 ${value(sum.sms.unread)}` : '-'],
    ['版本', value(sum.ota?.currentVersion || sum.device?.firmwareVersion)],
  ].map(([k, v]) => `<div class="signal-item"><span>${escapeHtml(k)}</span><b>${escapeHtml(v)}</b></div>`).join('')
}

function renderOverview() {
  const item = activeInstance()
  const s = activeStatus()
  if (!item) {
    $('overview').innerHTML = '<div class="metric"><span>提示</span><b>先选择左侧设备</b></div>'
    renderHero()
    return
  }
  const sum = s?.summary || {}
  const metrics = [
    ['状态', s ? (s.reachable ? (s.authenticated === false ? '在线/未登录' : '在线') : `离线`) : '未知'],
    ['延迟', s?.latencyMs != null ? `${s.latencyMs}ms` : '-'],
    ['型号', sum.device?.model || sum.device?.name],
    ['IMEI', sum.device?.imei],
    ['ICCID', sum.sim?.iccid],
    ['号码', sum.sim?.phoneNumber || sum.sim?.msisdn],
    ['运营商', sum.network?.operator || sum.sim?.operator],
    ['网络', sum.network?.accessTechnology || sum.network?.registration],
    ['数据连接', sum.data ? `${boolText(sum.data.enabled)} / ${boolText(sum.data.connected)}` : '-'],
    ['短信', sum.sms ? `总 ${value(sum.sms.total)} / 未读 ${value(sum.sms.unread)}` : '-'],
  ]
  $('overview').innerHTML = metrics.map(([k, v]) => `<div class="metric"><span>${escapeHtml(k)}</span><b title="${escapeHtml(value(v))}">${escapeHtml(value(v))}</b></div>`).join('')
  renderHero()
}

function renderModuleTabs() {
  const tabs = [{ id: 'all', title: '全部' }, ...modules.map(m => ({ id: m.id, title: m.title.split(/[ /]/)[0] }))]
  $('moduleTabs').innerHTML = tabs.map(t => `<button class="${t.id === activeModule ? 'active' : ''}" data-module="${escapeHtml(t.id)}">${escapeHtml(t.title)}</button>`).join('')
  $$('button[data-module]', $('moduleTabs')).forEach(btn => btn.addEventListener('click', () => {
    activeModule = btn.dataset.module
    renderFeatures()
  }))
}

function renderFeatures() {
  renderModuleTabs()
  const disabled = activeId ? '' : ' disabled'
  const visible = activeModule === 'all' ? modules : modules.filter(m => m.id === activeModule)
  $('featureGrid').innerHTML = visible.map(m => `<article class="feature">
    <div class="feature-head">
      <div><p class="eyebrow ${m.tone === 'danger' ? '' : 'accent'}">${escapeHtml(m.id)}</p><h4>${escapeHtml(m.title)}</h4></div>
      <span class="status-pill ${m.tone === 'danger' ? 'bad' : m.tone === 'warn' ? 'warn' : m.tone === 'ok' ? 'ok' : ''}">${m.endpoints.length} API</span>
    </div>
    <p>${escapeHtml(m.desc)}</p>
    ${m.tone === 'danger' ? '<div class="danger-note">包含写操作/网络切换类接口，执行前确认目标设备。</div>' : ''}
    <div class="endpoint-pills">${m.endpoints.map(ep => `<button${disabled} data-ep="${escapeHtml(ep)}">${escapeHtml(ep)}</button>`).join('')}</div>
  </article>`).join('')
  $$('button[data-ep]', $('featureGrid')).forEach(btn => btn.addEventListener('click', () => {
    switchView('api')
    $('endpointInput').value = btn.dataset.ep
    $('methodSelect').value = inferMethod(btn.dataset.ep)
    runEndpoint()
  }))
}

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) {
  $$('.rail-btn[data-view]').forEach(btn => btn.classList.toggle('active', btn.dataset.view === view))
  $$('.view').forEach(panel => panel.classList.toggle('active', panel.id === `${view}View`))
  localStorage.setItem('multi-simadmin-view', view)
}

function selectInstance(id) {
  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
  renderInstances()
  renderOverview()
  renderFeatures()
}

async function loadConfig() {
  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 = localStorage.getItem('multi-simadmin-active')
  if (saved && instances.some(x => x.id === saved)) activeId = saved
  renderEndpointList()
  renderInstances()
  renderOverview()
  renderFeatures()
  if (activeId) selectInstance(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]))
    renderInstances()
    renderOverview()
    renderFeatures()
    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('请先选择左侧设备')
    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())
  $('loginBtn').addEventListener('click', loginActive)
  $('runEndpoint').addEventListener('click', runEndpoint)
  $('instanceSearch').addEventListener('input', renderInstances)
  $('densityBtn').addEventListener('click', () => {
    document.body.classList.toggle('compact')
    localStorage.setItem('multi-simadmin-density', document.body.classList.contains('compact') ? 'compact' : 'normal')
  })
  $$('.rail-btn[data-view]').forEach(btn => btn.addEventListener('click', () => switchView(btn.dataset.view)))
  $$('#statusFilters .chip').forEach(btn => btn.addEventListener('click', () => {
    activeFilter = btn.dataset.filter
    $$('#statusFilters .chip').forEach(x => x.classList.toggle('active', x === btn))
    renderInstances()
  }))
  $('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 })
  })
  $('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') || 'dashboard')
}

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)
}