dtScreen/src/mock/api.js

/**
 * 模拟 API 接口层（动态数据版）
 *
 * 特性：
 *   - 数据来源：mock_data.json（由 generate_mock_data.py 从真实 XLS 路口数据生成）
 *   - 静态资源（视频/图片）在此处统一 import，接口直接返回完整数据
 *   - 支持分页、筛选、排序等动态查询
 *   - 每次请求信号倒计时、在线率、告警时间等实时数据会动态变化
 *   - 路口状态会随机波动，模拟真实监控场景
 *
 * 使用：import { apiLogin, apiGetPoints, ... } from '@/pyscripts/api'
 * 所有接口返回 Promise<{ code, message, data }>
 */

import mockData from './mock_data.json'

// ── 静态资源（模拟 CDN / 后端返回的资源 URL）─────────────────────

import video1 from '@/assets/videos/video1.mp4'
import video2 from '@/assets/videos/video2.mp4'
import video3 from '@/assets/videos/video3.mp4'
import video4 from '@/assets/videos/video4.mp4'
import arrow1 from '@/assets/images/arrow_1.png'
import arrow2 from '@/assets/images/arrow_2.png'
import arrow3 from '@/assets/images/arrow_3.png'
import arrow4 from '@/assets/images/arrow_4.png'

const VIDEOS = [video1, video2, video3, video4]
const ARROWS = [arrow1, arrow2, arrow3, arrow4]

function pickVideo(i) { return VIDEOS[i % VIDEOS.length] }

// ── 工具 ─────────────────────────────────────────────────────────────

function sleep(ms) { return new Promise(r => setTimeout(r, ms)) }
function delay(base = 200) { return sleep(base + Math.floor(Math.random() * 200)) }
function ok(data) { return { code: 200, message: 'success', data } }
function fail(msg, code = 400) { return { code, message: msg, data: null } }

/** 根据路口ID生成稳定的设备状态（所有API共用，确保一致） */
function _getDeviceStatus(id) {
  const seed = id ? Array.from(id).reduce((s, c, i) => s + c.charCodeAt(0) * (i + 1), 0) : 0
  const statusList = ['在线', '在线', '在线', '在线', '在线', '在线', '在线', '离线']
  return statusList[seed % statusList.length]
}

/** 基于当前秒数产生稳定随机（同一秒内多次调用返回相同值） */
function seededRand(seed) {
  const x = Math.sin(seed) * 10000
  return x - Math.floor(x)
}

/** 当前时间 HH:MM:SS */
function nowTime() { return new Date().toLocaleTimeString() }
function nowDate() { return new Date().toLocaleDateString() }

// ── 数据缓存（首次 import 时加载） ──────────────────────────────────

const DB = {
  points:              mockData.points,
  menuTree:            mockData.menuTree,
  tongzhouMenuTree:    mockData.tongzhouMenuTree,
  trunkLineMenuTree:   mockData.trunkLineMenuTree,
  homeData:            mockData.homeData,
  deviceStatus:        mockData.deviceStatus,
  timeSpaceData:       mockData.timeSpaceData,
  crossingList:        mockData.crossingList,
  securityRoutes:      mockData.securityRoutes,
  securityTasks:       mockData.securityTasks,
  filterOptions:       mockData.filterOptions,
  signalTimings:       mockData.sampleSignalTimings,
  intersectionConfigs: mockData.sampleIntersectionConfigs,
}

// ── 内部生成器 ───────────────────────────────────────────────────────

/**
 * 生成摄像机模拟数据（基于 XLS 摄像机 Sheet 字段结构）
 * 字段：路口名、路口编号、摄像机编号、登录名称、摄像头密码、摄像头类型、端口号、IP地址、是否启用、位置
 */
function _makeCameras(id, name, seed) {
  const positions = ['北进口', '南进口', '东进口', '西进口']
  const types = ['枪机', '球机']
  const numCams = 2 + (seed % 3) // 2~4 个
  return Array.from({ length: numCams }, (_, i) => ({
    intersection: name || id,
    intersectionId: id,
    cameraId: `CAM${(id || '000').slice(-6)}_${String(i + 1).padStart(2, '0')}`,
    loginName: `admin_${String(seed + i).slice(-4)}`,
    password: '******',
    cameraType: types[(seed + i) % types.length],
    port: 554 + i,
    ip: `192.168.${10 + (seed % 200)}.${100 + i}`,
    enabled: (seed + i) % 20 !== 0,  // ~5% 禁用
    position: positions[i % positions.length],
  }))
}

/** 从摄像机列表推导各方向摄像头类型 (1枪机 2球机 0无) */
function _camerasToArmTypes(cameras) {
  const posMap = { '北进口': 'N', '南进口': 'S', '东进口': 'E', '西进口': 'W' }
  const typeMap = { '枪机': 1, '球机': 2 }
  const result = { N: 0, S: 0, E: 0, W: 0 }
  cameras.forEach(c => {
    if (c.enabled) {
      const dir = posMap[c.position]
      if (dir) result[dir] = typeMap[c.cameraType] || 0
    }
  })
  return result
}

function _makeIntersectionConfig(id, name, { fixedNsGreen, iconMode = 'default' } = {}) {
  const phases = ['南北直行', '东西直行', '北单放', '东单放']
  const nsGreen = fixedNsGreen !== undefined ? fixedNsGreen : false
  const countdown = 10 + Math.floor(Math.random() * 50)
  const seed = id ? Array.from(id).reduce((s, c, i) => s + c.charCodeAt(0) * (i + 1), 0) : 0

  const cameras = _makeCameras(id, name, seed)
  const armCamTypes = _camerasToArmTypes(cameras)

  const lanesPresetMap = {
    default: {
      N: ['U', 'L', 'S', 'R'],
      S: ['U', 'L', 'S', 'R'],
      E: ['U', 'L', 'S', 'R'],
      W: ['U', 'L', 'S', 'R'],
    },
    simple: {
      N: ['L', 'S', null, null],  // 北：左转+直行
      S: ['U', 'S', null, null],  // 南：掉头+直行
      E: ['L', 'S', null, null],  // 东：掉头+直行
      W: ['U', 'S', null, null],  // 西：左转+直行
    },
  }
  const lanesPreset = lanesPresetMap[iconMode] || lanesPresetMap.default

  return {
    status: _getDeviceStatus(id),
    signals: {
      ns: { phaseName: phases[0], time: countdown, isGreen: nsGreen },
      ew: { phaseName: phases[1], time: countdown, isGreen: !nsGreen },
    },
    armsConfig: {
      N: { cameraType: armCamTypes.N, lanes: lanesPreset.N },
      S: { cameraType: armCamTypes.S, lanes: lanesPreset.S },
      E: { cameraType: armCamTypes.E, lanes: lanesPreset.E },
      W: { cameraType: armCamTypes.W, lanes: lanesPreset.W },
    },
    cameras,
  }
}

/**
 * 动态生成路口相位配时数据
 * @param {number} cycleLength 周期总时长
 * @param {boolean} isTwoRows 是否生成上下双排 8 相位 (默认 true)
 */
function _makePhaseData(cycleLength = 140, isTwoRows = true, iconMode = 'default') {
  const n = 4; // 4个阶段 (S1-S4)
  // 各阶段按比例分配时间，P1/P3较长，P2/P4较短
  const ratios = [0.3, 0.2, 0.3, 0.2];
  const stageTimes = ratios.map(r => Math.floor(cycleLength * r));
  // 把余数补到第一个阶段，确保总和 = cycleLength
  stageTimes[0] += cycleLength - stageTimes.reduce((a, b) => a + b, 0);
  const pd = [];

  // ==========================================
  // 修改点：将单个图标改为用逗号分隔的"成对图标"字符串
  // 前端组件会按逗号切割并分别放到对角位置
  // ==========================================
  // 固定4个阶段的图标和方向：P1南北直行、P2南北左转、P3东西直行、P4东西左转
  const phaseConfigMap = {
    default: [
      { icon: 'STRAIGHT_DOWN,STRAIGHT_UP', direction: 'ns' },       // P1: 南北直行
      { icon: 'TURN_DOWN_LEFT,TURN_UP_LEFT', direction: 'ns' },     // P2: 南北左转
      { icon: 'STRAIGHT_LEFT,STRAIGHT_RIGHT', direction: 'ew' },    // P3: 东西直行
      { icon: 'TURN_LEFT_DOWN,TURN_RIGHT_UP', direction: 'ew' },    // P4: 东西左转
    ],
    simple: [
      { icon: 'STRAIGHT_DOWN,STRAIGHT_UP', direction: 'ns' },              // P1: 南北直行
      { icon: 'TURN_DOWN_LEFT,TURN_UP_LEFT_UTURN', direction: 'ns' },      // P2: 北左转+南掉头
      { icon: 'STRAIGHT_LEFT,STRAIGHT_RIGHT', direction: 'ew' },           // P3: 东西直行
      { icon: 'TURN_LEFT_DOWN,TURN_RIGHT_UP_UTURN', direction: 'ew' },      // P4: 东左转+西掉头
    ],
  };
  const phaseConfig = phaseConfigMap[iconMode] || phaseConfigMap.default;

  let t = 0;
  for (let i = 0; i < n; i++) {
    const stageStart = t;
    const stageTime = stageTimes[i];
    const stageEnd = stageStart + stageTime;
    const { icon: stageIcon, direction } = phaseConfig[i];

    const pushTrackData = (trackIdx, phaseNamePrefix) => {
      const icon = stageIcon;
      const phaseName = `${phaseNamePrefix}${i + 1}`;
      const s = Math.floor(Math.random() * 3) + 3; // 绿闪/条纹 3-5s
      const y = 3; // 黄灯固定 3s
      const r = 2; // 全红间隔 2s
      const g = stageTime - s - y - r; // 绿灯 = 阶段总时长 - 条纹 - 黄灯 - 红灯

      let curT = stageStart;

      // 1. 绿灯 (phase[8]存阶段总时长，用于显示)
      pd.push([trackIdx, curT, curT + g, phaseName, g, 'green', icon, direction, stageTime]);
      curT += g;
      // 2. 绿闪/条纹
      pd.push([trackIdx, curT, curT + s, '', s, 'stripe', null, direction]);
      curT += s;
      // 3. 黄灯
      pd.push([trackIdx, curT, curT + y, '', y, 'yellow', null, direction]);
      curT += y;
      // 4. 红灯固定
      pd.push([trackIdx, curT, curT + r, '', r, 'red', null, direction]);
    };

    pushTrackData(0, 'P'); // 生成第一排 (P1-P4)
    if (isTwoRows) {
      pushTrackData(1, 'P'); // 生成第二排 (P5-P8，由于逻辑相同，名称可根据需要改为 i+5)
    }

    t = stageEnd;
  }
  return pd;
}

function _makeCornerVideos() {
  return { nw: video1, ne: video2, sw: video3, se: video4 }
}

function _makeStageList() {
  return [1, 2, 3, 4].map((_, i) => ({
    value: String(i + 1), time: [30, 30, 50, 30][i], img: ARROWS[i],
  }))
}

function _makeCardPhases(activeIndex = 0) {
  return ARROWS.map((img, i) => ({
    id: i + 1, icon: ['↑', '↰', '↑', '↰'][i], img, active: i === activeIndex,
  }))
}

/** 动态波动整数值（基于基准值上下浮动） */
function _fluctuate(base, range) {
  return base + Math.floor(Math.random() * range * 2) - range
}

/** 动态更新路口状态（每次调用随机波动少量路口） */
function _dynamicPoints() {
  return DB.points.map((p, i) => {
    const r = seededRand(i + 31)
    const status = r < 0.78 ? 'normal' : r < 0.92 ? 'busy' : 'alarm'
    return { ...p, status, updatedAt: Date.now() - Math.floor(r * 120000) }
  })
}

// ═══════════════════════════════════════════════════════════════════════
//  E: 认证
// ═══════════════════════════════════════════════════════════════════════

/** 验证码状态（模拟服务端 session 存储） */
let _captchaStore = { code: '', expireAt: 0 }

/**
 * GET /api/auth/captcha — 获取验证码
 * 返回 4 位随机字符 + base64 图片（Canvas 绘制）
 * 真实后端应返回图片流，这里模拟返回验证码文本 + 配置，由前端 Canvas 绘制
 */
export async function apiGetCaptcha() {
  await delay(100)
  const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZ23456789'
  const code = Array.from({ length: 4 }, () => chars[Math.floor(Math.random() * chars.length)]).join('')

  // 存储验证码，有效期 60 秒
  _captchaStore = { code: code.toUpperCase(), expireAt: Date.now() + 60000 }

  return ok({
    captchaId: 'cap_' + Date.now(),
    code, // 模拟环境直接返回明文，真实环境不应返回
    length: 4,
    expireIn: 60, // 秒
  })
}

/**
 * POST /api/auth/login — 登录（含验证码校验）
 */
export async function apiLogin({ username, password, captcha }) {
  await delay(300)

  // 验证码校验
  if (_captchaStore.code && captcha) {
    if (Date.now() > _captchaStore.expireAt) {
      return fail('验证码已过期，请刷新', 401)
    }
    if (captcha.toUpperCase() !== _captchaStore.code) {
      return fail('验证码错误', 401)
    }
  }

  // 账号密码校验
  if (username === 'admin' && password === '123456') {
    _captchaStore = { code: '', expireAt: 0 } // 登录成功后清除验证码
    return ok({ token: 'demo_token_' + Date.now(), user: { name: 'admin', role: '管理员' } })
  }
  return fail('账号或密码错误（演示账号：admin / 123456）', 401)
}

export async function apiChangePassword({ oldPassword, newPassword }) {
  await delay(300)
  if (oldPassword === '123456') return ok({ message: '密码修改成功' })
  return fail('原密码错误')
}

// ═══════════════════════════════════════════════════════════════════════
//  A: 路口基础数据
// ═══════════════════════════════════════════════════════════════════════

/**
 * GET /api/intersections — 路口点位列表
 * 每次调用路口状态会动态波动
 */
export async function apiGetPoints(filters = {}) {
  await delay(200)
  let list = _dynamicPoints()
  if (filters.node) list = list.filter(p => p.node === filters.node)
  if (filters.status) list = list.filter(p => p.status === filters.status)
  if (filters.keyword) {
    const kw = filters.keyword.toLowerCase()
    list = list.filter(p => p.name.toLowerCase().includes(kw) || p.id.toLowerCase().includes(kw))
  }
  return ok(list)
}

/**
 * GET /api/intersections/:id — 路口详情
 * 信号倒计时每次请求动态变化
 */
export async function apiGetIntersectionData(id, { fixedNsGreen } = {}) {
  await delay(250)
  const base = DB.intersectionConfigs[id]
  const point = DB.points.find(p => p.id === id)
  const seed = id ? Array.from(id).reduce((s, c, i) => s + c.charCodeAt(0) * (i + 1), 0) : 0

  // 动态倒计时：基于当前秒数计算
  const nowSec = Math.floor(Date.now() / 1000)
  const cycle = 140
  const elapsed = nowSec % cycle
  const nsGreenVal = fixedNsGreen !== undefined ? fixedNsGreen : false
  const nsGreen = nsGreenVal

  const config = base ? {
    status: base.status || _getDeviceStatus(id),
    signals: {
      ns: { ...base.signals.ns, time: Math.max(1, cycle - elapsed), isGreen: nsGreen },
      ew: { ...base.signals.ew, time: elapsed || 1, isGreen: !nsGreen },
    },
    armsConfig: base.armsConfig,
    cameras: base.cameras,
  } : _makeIntersectionConfig(id, point ? point.name : id, { fixedNsGreen: nsGreenVal })

  return ok({
    ...config,
    id, name: point ? point.name : id,
    mainVideo: pickVideo(seed),
    cornerVideos: _makeCornerVideos(seed),
  })
}

/**
 * GET /api/intersections/:id/signal-timing — 信号配时
 * currentTime 随真实时间走动
 */
export async function apiGetSignalTiming(id) {
  await delay(300)
  const preset = DB.signalTimings[id]
  if (preset) {
    const cycleLength = preset.data.cycleLength
    return {
      code: 200, message: 'success',
      data: { ...preset.data, currentTime: Math.floor(Date.now() / 1000) % cycleLength }
    }
  }
  const cycleLength = [100, 120, 130, 140, 150, 160][Math.floor(Math.random() * 6)]
  return ok({
    cycleLength,
    currentTime: Math.floor(Date.now() / 1000) % cycleLength,
    phaseData: _makePhaseData(cycleLength, false),
  })
}

/** GET /api/intersections/:id/stages */
export async function apiGetIntersectionStages(id) {
  await delay(200)
  const timing = DB.signalTimings[id]
  if (timing) {
    const hasTrack1 = timing.data.phaseData.some(p => p[0] === 1)
    const phases = timing.data.phaseData.filter(p => p[0] === (hasTrack1 ? 1 : 0) && p[4] !== null)
    return ok(phases.map((p, i) => ({
      value: String(i + 1), time: p[4], phaseName: p[3], direction: p[6], img: ARROWS[i % ARROWS.length],
    })))
  }
  return ok(_makeStageList())
}

/** GET /api/intersections/:id/schemes */
export async function apiGetSchemes(id) {
  await delay(150)
  return ok(DB.filterOptions.schemeOptions)
}

// ═══════════════════════════════════════════════════════════════════════
//  A4: 区域菜单树
// ═══════════════════════════════════════════════════════════════════════

export async function apiGetMenuTree(tabId = 'arterial') {
  await delay(250)
  return ok(tabId === 'arterial' ? DB.menuTree : DB.tongzhouMenuTree)
}

export async function apiGetTongzhouMenuTree() {
  await delay(250)
  return ok(DB.tongzhouMenuTree)
}

export async function apiGetTrunkLineMenuTree() {
  await delay(200)
  return ok(DB.trunkLineMenuTree)
}

// ═══════════════════════════════════════════════════════════════════════
//  B: 设备状态 & 首页（动态波动）
// ═══════════════════════════════════════════════════════════════════════

/**
 * GET /api/devices/status/summary
 * 在线数每次请求轻微波动
 */
// ── 信号机故障数缓存：同一秒内多次调用返回同一份数据，保证在线离线与故障同步 ──
let _smFaultCache = { ts: 0, total: 0, faultTotal: 0 }
function _getSmFaultSnapshot() {
  const now = Math.floor(Date.now() / 1000)
  if (_smFaultCache.ts === now) return _smFaultCache
  const sm = DB.deviceStatus.signalMachine
  const total = sm.chartData[0].value + sm.chartData[1].value
  const yellowFlashMode = DB.homeData.controlModes.find(m => m.name === '黄闪控制')
  const yellowFlash = yellowFlashMode ? yellowFlashMode.value : 0
  const ctrlBoard = Math.max(0, _fluctuate(5, 3))
  const phaseBoard = Math.max(0, _fluctuate(4, 2))
  const detBoard = Math.max(0, _fluctuate(3, 2))
  const faultTotal = ctrlBoard + phaseBoard + detBoard + yellowFlash
  _smFaultCache = { ts: now, total, faultTotal, ctrlBoard, phaseBoard, detBoard, yellowFlash }
  return _smFaultCache
}

export async function apiGetDeviceStatus(type) {
  await delay(200)
  function fluctuateStats(base) {
    const online = base.chartData[0].value
    const total = online + base.chartData[1].value
    const newOnline = _fluctuate(online, Math.ceil(total * 0.02))
    const clamped = Math.max(0, Math.min(total, newOnline))
    const rate = Math.round(clamped / total * 100)
    return {
      centerTitle: rate + '%',
      centerSubTitle: `${clamped}/${total}`,
      chartData: [
        { ...base.chartData[0], value: clamped },
        { ...base.chartData[1], value: total - clamped },
      ]
    }
  }
  // 信号机：离线数 = 故障总数（与设备状态同步）
  function smStats() {
    const snap = _getSmFaultSnapshot()
    const online = snap.total - snap.faultTotal
    const rate = Math.round(online / snap.total * 100)
    return {
      centerTitle: rate + '%',
      centerSubTitle: `${online}/${snap.total}`,
      chartData: [
        { name: '在线', value: online, color: '#32F6F8' },
        { name: '离线', value: snap.faultTotal, color: '#E4D552' },
      ]
    }
  }
  if (type === 'signalMachine') return ok(smStats())
  if (type && DB.deviceStatus[type]) return ok(fluctuateStats(DB.deviceStatus[type]))
  return ok({
    signalMachine: smStats(),
    detector: fluctuateStats(DB.deviceStatus.detector),
    camera: fluctuateStats(DB.deviceStatus.camera),
  })
}

/**
 * GET /api/home/snapshot — 首页快照
 * 在线数波动 + 时间实时更新 + 告警时间刷新
 */
export async function apiGetHomeSnapshot() {
  await delay(200)
  const total = DB.homeData.online.total
  const online = _fluctuate(Math.round(total * 0.93), 30)
  const clamped = Math.max(0, Math.min(total, online))
  const fault = Math.floor(Math.random() * 5)

  return ok({
    header: { ...DB.homeData.header, timeText: nowTime(), dateText: nowDate() },
    online: { online: clamped, offline: total - clamped, total, rate: Math.round(clamped / total * 100) },
    alarms: DB.homeData.alarms.map(a => ({
      ...a,
      time: new Date(Date.now() - Math.floor(Math.random() * 3600000)).toLocaleTimeString(),
    })),
    duty: DB.homeData.duty,
    device: { normal: total - fault, fault },
    controlModes: DB.homeData.controlModes,
    keyIntersections: DB.homeData.keyIntersections,
  })
}

/** GET /api/home/control-mode-stats — 控制模式分布（总数与信号机总数同步，内部重分配） */
export async function apiGetControlModeStats() {
  await delay(150)
  const sm = DB.deviceStatus.signalMachine
  const total = sm.chartData[0].value + sm.chartData[1].value
  const modes = DB.homeData.controlModes
  // 各项按基准值波动
  const fluctuated = modes.map(m => ({
    ...m, value: Math.max(0, _fluctuate(m.value, Math.ceil(m.value * 0.05))),
  }))
  // 修正总数：将差值补到第一项（定周期控制），保证总数 = 信号机总数
  const currentSum = fluctuated.reduce((s, m) => s + m.value, 0)
  fluctuated[0].value = Math.max(0, fluctuated[0].value + (total - currentSum))
  return ok(fluctuated)
}

/**
 * GET /api/alarms/latest — 告警列表（分页 + 动态时间）
 * @param {{ page?: number, pageSize?: number, level?: string }} params
 */
export async function apiGetLatestAlarms(params = {}) {
  await delay(200)
  const typeMap = { high: 'error', mid: 'warning', low: 'warning' }
  let alarms = DB.homeData.alarmList.map((a, i) => ({
    id: a.id, title: a.title, type: a.type || typeMap[a.level] || 'warning',
    time: new Date(Date.now() - i * 180000 - Math.floor(Math.random() * 60000)).toLocaleTimeString(),
    description: a.description || `${a.loc}-${a.title}`,
    position: a.position, level: a.level, loc: a.loc,
  }))

  if (params.level) alarms = alarms.filter(a => a.level === params.level)

  const page = params.page || 1
  const pageSize = params.pageSize || 10
  const start = (page - 1) * pageSize
  return ok({ total: alarms.length, page, pageSize, list: alarms.slice(start, start + pageSize) })
}

// ═══════════════════════════════════════════════════════════════════════
//  C: 勤务 & 任务（分页 + 筛选）
// ═══════════════════════════════════════════════════════════════════════

/**
 * GET /api/tasks — 勤务任务列表
 * 支持 page / pageSize / status / keyword 筛选
 */
export async function apiGetTasks(params = {}) {
  await delay(200)
  let list = [...DB.securityTasks]
  if (params.status) list = list.filter(t => t.status === params.status)
  if (params.keyword) {
    const kw = params.keyword.toLowerCase()
    list = list.filter(t => t.name.toLowerCase().includes(kw) || t.executor.toLowerCase().includes(kw))
  }
  if (params.level) list = list.filter(t => t.level === params.level)

  const page = params.page || 1
  const pageSize = params.pageSize || 5
  const total = list.length
  const totalPages = Math.ceil(total / pageSize)
  const start = (page - 1) * pageSize

  return ok({
    total, page, pageSize, totalPages,
    list: list.slice(start, start + pageSize),
  })
}

/**
 * GET /api/security-routes — 勤务路线（含视频）
 */
export async function apiGetSecurityRoutes() {
  await delay(200)
  return ok(DB.securityRoutes.map((r, i) => ({
    ...r, mainVideo: pickVideo(i), cornerVideos: _makeCornerVideos(i),
  })))
}

/** GET /api/security-routes/:id */
export async function apiGetSecurityRouteDetail(id) {
  await delay(200)
  const idx = DB.securityRoutes.findIndex(r => r.id === id)
  const route = DB.securityRoutes[idx >= 0 ? idx : 0]
  if (!route) return fail('路线不存在', 404)
  return ok({ ...route, mainVideo: pickVideo(idx >= 0 ? idx : 0), cornerVideos: _makeCornerVideos(idx >= 0 ? idx : 0) })
}

/** GET /api/key-intersections */
export async function apiGetKeyIntersections() {
  await delay(150)
  return ok(DB.homeData.keyIntersections)
}

// ═══════════════════════════════════════════════════════════════════════
//  D: 交通时空图
// ═══════════════════════════════════════════════════════════════════════

export async function apiGetTrafficTimeSpace(opts = {}) {
  await delay(300)
  const { speed = 15, cycle = 120, band = 40, totalTime = 1800 } = opts
  const intersections = opts.intersections || DB.timeSpaceData.intersections
  const rawDistances = opts.distances || DB.timeSpaceData.distances
  // 将不均匀的物理距离归一化为等间距，保证绿波带视觉对齐
  const step = 500
  const distances = rawDistances.map((_, i) => i * step)
  const maxDist = distances[distances.length - 1]
  const waveData = [], greenData = []

  for (let t = 0; t <= totalTime; t += cycle) {
    const upKmh = 45 + Math.random() * 10   // 45-55 km/h 随机
    const downKmh = 45 + Math.random() * 10
    const upSpd = upKmh / 3.6               // 转 m/s
    const downSpd = downKmh / 3.6
    const ds = t + cycle / 2
    waveData.push({ yBottom: 0, yTop: maxDist, xBL: t, xBR: t + band, xTL: t + maxDist / upSpd, xTR: t + maxDist / upSpd + band, label: Math.round(upKmh) + 'km/h', direction: 'up', speed: Math.round(upKmh) })
    waveData.push({ yBottom: maxDist, yTop: 0, xBL: ds, xBR: ds + band, xTL: ds + maxDist / downSpd, xTR: ds + maxDist / downSpd + band, label: Math.round(downKmh) + 'km/h', direction: 'down', speed: Math.round(downKmh) })
    distances.forEach(y => {
      greenData.push({ y, start: t + y / upSpd, end: t + y / upSpd + band })
      greenData.push({ y, start: ds + (maxDist - y) / downSpd, end: ds + (maxDist - y) / downSpd + band })
    })
  }
  return ok({ intersections, distances, waveData, greenData })
}

// ═══════════════════════════════════════════════════════════════════════
//  路口列表表格（分页 + 筛选 + 排序 + 动态状态）
// ═══════════════════════════════════════════════════════════════════════

/**
 * GET /api/crossings — 路口列表（718条全量，支持翻页）
 * @param {{ keyword, subArea, status, node, isKey, page, pageSize, sortBy, sortOrder }} params
 */
export async function apiGetCrossingList(params = {}) {
  await delay(250)

  // 动态状态：每次请求路口状态会变化
  const statuses = ['在线', '在线', '在线', '在线', '离线']
  // 基于页码生成页级起始偏移（同一页固定，不同页不同）
  const page = params.page || 1
  const pageOffset = Math.floor(seededRand(page * 97) * 120)
  let list = DB.crossingList.map((r, i) => {
    const preset = DB.signalTimings[r.id]
    const cycleLength = preset ? preset.data.cycleLength : r.cycle
    // const phaseData = preset ? preset.data.phaseData : _makePhaseData(cycleLength, false)

    // 强制全部用 _makePhaseData 动态生成成对箭头
    const phaseData = _makePhaseData(cycleLength, false)
    return {
      ...r,
      status: _getDeviceStatus(r.id),
      cycle: cycleLength,
      phaseData,
      currentTime: Math.floor(seededRand(i * 31 + page * 97) * cycleLength),
    }
  })

  // 筛选（兼容中英文值映射）
  if (params.keyword || params.name) {
    const kw = (params.keyword || params.name).toLowerCase()
    list = list.filter(r => r.name.toLowerCase().includes(kw) || r.id.toLowerCase().includes(kw))
  }
  if (params.subArea) list = list.filter(r => r.subArea === params.subArea)
  if (params.status) {
    const statusMap = { 'online': '在线', 'offline': '离线', 'fault': '故障' }
    const mapped = statusMap[params.status] || params.status
    list = list.filter(r => r.status === mapped)
  }
  if (params.node) list = list.filter(r => r.node === params.node)
  if (params.isKey !== undefined && params.isKey !== '') {
    const boolVal = params.isKey === 'yes' || params.isKey === true
    list = list.filter(r => r.isKey === boolVal)
  }
  if (params.timeOffset) {
    if (params.timeOffset === 'none' || params.timeOffset === '无偏差') {
      list = list.filter(r => r.timeOffset === '无偏差')
    } else {
      list = list.filter(r => r.timeOffset !== '无偏差')
    }
  }

  // 排序
  if (params.sortBy) {
    const key = params.sortBy
    const dir = params.sortOrder === 'desc' ? -1 : 1
    list.sort((a, b) => {
      if (a[key] < b[key]) return -1 * dir
      if (a[key] > b[key]) return 1 * dir
      return 0
    })
  }

  // 分页
  const pageSize = params.pageSize || 10
  const total = list.length
  const totalPages = Math.ceil(total / pageSize)
  const start = (page - 1) * pageSize

  return ok({
    total, page, pageSize, totalPages,
    list: list.slice(start, start + pageSize),
  })
}

/** GET /api/dict/:type */
export async function apiGetDictOptions(type) {
  await delay(100)
  if (DB.filterOptions[type]) return ok(DB.filterOptions[type])
  return fail('未知字典类型: ' + type, 404)
}

// ═══════════════════════════════════════════════════════════════════════
//  F: 设备操作
// ═══════════════════════════════════════════════════════════════════════

export async function apiRestartDevice(id) {
  await delay(500)
  return ok({ message: `设备 ${id} 重启指令已下发` })
}

export async function apiUpgradeDevice(id, file) {
  await delay(800)
  return ok({ message: `设备 ${id} 升级任务已创建`, version: 'V3.3.0' })
}

// ═══════════════════════════════════════════════════════════════════════
//  H: 弹窗专用（动态倒计时 + 实时状态）
// ═══════════════════════════════════════════════════════════════════════

/**
 * GET /api/special-task/:id/monitor — 特勤监控面板
 * 信号灯倒计时随真实时间变化
 */
export async function apiGetSpecialTaskMonitorData(id, { fixedNsGreen } = {}) {
  await delay(400)

  // 用 id 生成稳定 seed，兼容数字/字符串/undefined
  let numId = typeof id === 'number' ? id : parseInt(id)
  if (!numId || isNaN(numId)) {
    // 非数字 id（如字符串），用 charCode 求和
    numId = id ? Array.from(String(id)).reduce((s, c, i) => s + c.charCodeAt(0) * (i + 1), 0) : 1
  }
  const seed = Math.abs(numId * 7) || 7

  // 任务信息——不同任务不同数据
  const taskIdx = Math.abs(numId - 1) % (DB.securityTasks.length || 1)
  const task = DB.securityTasks.find(t => t.id === id || t.id === numId) || DB.securityTasks[taskIdx] || {}
  const timeSlots = ['07:30-09:30', '09:00-11:00', '12:00-14:00', '14:00-16:00', '17:00-19:00', '19:00-21:00']
  const statusColorMap = {
    '未开始': '#ffaa00',
    '进行中': '#ff4d4f',
    '已完成': '#8dc453',
  }
  const taskStatus = task.status || '未开始'

  const taskInfo = {
    name: task.name || '特勤路线',
    time: timeSlots[seed % timeSlots.length],
    manager: task.executor || DB.securityTasks[seed % DB.securityTasks.length]?.executor || '王建国',
    level: task.level || (seed % 3 === 0 ? '二级' : '一级'),
    status: taskStatus,
    statusColor: statusColorMap[taskStatus] || '#ffaa00',
  }

  // 根据任务 id 选取不同的关键路口（每个任务关联不同的4个路口）
  const allKeyPoints = DB.points.filter(p => p.isKey)
  const startIdx = (seed * 3) % Math.max(allKeyPoints.length - 4, 1)
  const keyPoints = allKeyPoints.slice(startIdx, startIdx + 4)

  // 视频
  const videos = keyPoints.map((_, i) => ({ id: i + 1, url: pickVideo(seed + i) }))

  // 每个路口的控制模式和状态颜色根据路口 id 变化
  const modeList = ['步进', '系统', '定周期', '感应', '手动']
  const colorList = ['#ffaa00', '#00e5ff', '#68e75f', '#00e5ff']
  const nowSec = Math.floor(Date.now() / 1000)

  const allLanes = ['U', 'L', 'S', 'R'];
  const lanePresets = [
    { N: allLanes, S: allLanes, E: allLanes, W: allLanes },
  ]

  const intersections = keyPoints.map((jnc, i) => {
    const jncSeed = Array.from(jnc.id).reduce((s, c, idx) => s + c.charCodeAt(0) * (idx + 1), 0)
    const cycle = [100, 120, 130, 140, 150][jncSeed % 5]
    const elapsed = nowSec % cycle
    const nsGreen = fixedNsGreen !== undefined ? fixedNsGreen : false
    const countdown = Math.max(1, cycle - elapsed)
    const laneSet = lanePresets[jncSeed % lanePresets.length]

    // 用摄像机字段结构生成，再推导 cameraType
    const cameras = _makeCameras(jnc.id, jnc.name, jncSeed)
    const armCamTypes = _camerasToArmTypes(cameras)

    return {
      id: jnc.id, name: jnc.name,
      statusColor: colorList[jncSeed % colorList.length],
      stage: (Math.floor(elapsed / (cycle / 4)) % 4) + 1,
      mode: modeList[jncSeed % modeList.length],
      timeLeft: countdown,
      btnText: i === 0 ? '立即解锁' : '立即执行',
      btnType: i === 0 ? 'normal' : 'primary',
      phases: _makeCardPhases(Math.floor(elapsed / (cycle / 4)) % 4),
      cameras,
      mapData: {
        armsConfig: {
          N: { lanes: laneSet.N, cameraType: armCamTypes.N },
          S: { lanes: laneSet.S, cameraType: armCamTypes.S },
          E: { lanes: laneSet.E, cameraType: armCamTypes.E },
          W: { lanes: laneSet.W, cameraType: armCamTypes.W },
        },
        signals: {
          ns: { isGreen: nsGreen, time: countdown, phaseName: '南北直行' },
          ew: { isGreen: !nsGreen, time: Math.max(1, cycle - countdown), phaseName: '东西直行' },
        },
      },
      videoUrls: _makeCornerVideos(seed + i),
    }
  })

  return ok({ taskInfo, videos, intersections })
}

/**
 * GET /api/crossing/panel/:id — CrossingPanel 弹窗
 * 倒计时实时变化
 */
export async function apiGetCrossingPanelData(id) {
  await delay(300)
  const point = DB.points.find(p => p.id === id)
  const config = DB.intersectionConfigs[id] || _makeIntersectionConfig(id, null, { fixedNsGreen: false, iconMode: 'simple' })
  const seed = id ? id.charCodeAt(id.length - 1) : 0
  // 确保 config 有 status
  if (!config.status) {
    config.status = _getDeviceStatus(id)
  }

  const preset = DB.signalTimings[id]
  const cycleLength = preset ? preset.data.cycleLength : [100, 120, 130, 140, 150, 160][Math.abs(seed) % 6]
  const phaseData = preset ? preset.data.phaseData : _makePhaseData(cycleLength, false, 'simple')
  const currentTime = Math.floor(Date.now() / 1000) % cycleLength

  return ok({
    currentRoute: {
      id, name: point ? point.name : id,
      level: point?.isKey ? '一级' : '二级',
      mode: '快进', time: cycleLength + 's',
      mainVideo: pickVideo(seed), cornerVideos: _makeCornerVideos(seed),
    },
    intersectionData: config,
    phaseData,
    cycleLength, currentTime,
  })
}

/**
 * GET /api/crossing/detail/:id — CrossingDetailPanel 弹窗
 */
export async function apiGetCrossingDetailData(id, { iconMode = 'default' } = {}) {
  await delay(350)
  const point = DB.points.find(p => p.id === id)
  const config = DB.intersectionConfigs[id] || _makeIntersectionConfig(id, null, { fixedNsGreen: false, iconMode })

  // 用 id 的全部字符生成稳定 seed（加权位置避免 charCode 总和碰撞）
  const seed = id ? Array.from(id).reduce((s, c, i) => s + c.charCodeAt(0) * (i + 1), 0) : 0

  // 确保 config 有 status 字段（预存配置可能缺失）
  if (!config.status) {
    config.status = _getDeviceStatus(id)
  }

  // 从真实阶段数据推导周期和相位
  const preset = DB.signalTimings[id]
  const cycleLength = preset ? preset.data.cycleLength : [100, 120, 130, 140, 150, 160][seed % 6]
  const phaseData = preset ? preset.data.phaseData : _makePhaseData(cycleLength || 140, false, iconMode)

  // 从相位数据中提取阶段列表（优先上轨道绿灯相位，单轨道时取 track 0，最多4个）
  const hasTrack1 = phaseData.some(p => p[0] === 1)
  const greenPhases = phaseData.filter(p => p[0] === (hasTrack1 ? 1 : 0) && p[4] !== null).slice(0, 4)
  const stageList = greenPhases.map((p, i) => ({
    value: String(i + 1),
    time: p[4],
    phaseName: p[3],
    direction: p[6],
    img: ARROWS[i],
  }))

  // 控制方式选项 + 根据路口选择不同的当前控制方式
  const allMethods = [
    { label: '定周期', value: 'fixed' },
    { label: '黄闪', value: 'yellow_flash' },
    { label: '关灯', value: 'lights_off' },
    { label: '步进', value: 'step' },
    { label: '系统方案', value: 'system' },
    { label: '感应控制', value: 'sensor' },
    { label: '临时方案', value: 'temp' },
  ]
  const methodValues = ['fixed', 'step', 'system', 'sensor', 'temp']
  const currentMethod = methodValues[seed % methodValues.length]

  // 控制模式（显示用）
  const controlModes = ['定周期控制', '感应控制', '干线协调', '自适应控制']
  const currentMode = controlModes[seed % controlModes.length]

  // 控制方案：根据当前控制方式给出不同方案选项
  const schemeMap = {
    'fixed': [
      { label: '早高峰', value: 'early_peak' },
      { label: '晚高峰', value: 'evening_peak' },
      { label: '平峰', value: 'normal' },
      { label: '夜间', value: 'night' },
      { label: '周末', value: 'weekend' },
    ],
    'sensor': [
      { label: '全感应', value: 'full_actuated' },
      { label: '半感应', value: 'semi_actuated' },
    ],
    'system': [
      { label: '系统优化方案A', value: 'sys_a' },
      { label: '系统优化方案B', value: 'sys_b' },
      { label: '系统优化方案C', value: 'sys_c' },
    ],
    'step': [
      { label: '步进方案1', value: 'step_1' },
      { label: '步进方案2', value: 'step_2' },
    ],
    'temp': [
      { label: '临时方案A', value: 'temp_a' },
      { label: '临时方案B', value: 'temp_b' },
      { label: '临时方案C', value: 'temp_c' },
    ],
    'yellow_flash': [{ label: '黄闪默认', value: 'yf_default' }],
    'lights_off': [{ label: '关灯默认', value: 'lo_default' }],
  }
  const schemeOptions = schemeMap[currentMethod] || schemeMap['fixed']

  // 相位差和协调时间基于 seed 稳定变化
  const phaseDiff = (seed * 7) % 25
  const coordTime = (seed * 13) % 60

  return ok({
    currentRoute: {
      id, name: point ? point.name : id,
      level: point?.isKey ? '一级' : '二级',
      mode: currentMode,
      time: cycleLength + 's',
      mainVideo: pickVideo(seed),
      cornerVideos: _makeCornerVideos(seed),
    },
    intersectionData: config,
    phaseData,
    cycleLength,
    currentTime: Math.floor(Date.now() / 1000) % cycleLength,
    phaseDiff,
    coordTime,
    stageList,
    schemeOptions,
    currentScheme: schemeOptions[0].value,
    controlMode: currentMode,
    controlMethodOptions: allMethods,
    currentMethod,
    locktimeOptions: [
      { label: '30', value: 30 },
      { label: '50', value: 50 },
      { label: '100', value: 100 },
      { label: '300', value: 300 },
    ],
  })
}

/**
 * GET /api/crossing/top-charts — 路口Tab顶部圆环图（动态波动）
 */
export async function apiGetCrossingTopCharts() {
  await delay(150)
  const sm = DB.deviceStatus.signalMachine
  const baseOnline = sm.chartData[0].value
  const total = baseOnline + sm.chartData[1].value
  const online = _fluctuate(baseOnline, Math.ceil(total * 0.02))

  const onlineChart = {
    chartData: [
      { name: '在线', value: online, color: '#4DF5F8' },
      { name: '离线', value: total - online, color: '#FFD369' },
    ],
    centerTitle: Math.round(online / total * 100) + '%',
    centerSubTitle: `${online}/${total}`,
  }

  const faultTotal = total - online
  const comm = Math.floor(faultTotal * 0.26)
  const det = Math.floor(faultTotal * 0.21)
  const lamp = Math.floor(faultTotal * 0.38)
  const conflict = faultTotal - comm - det - lamp

  const faultChart = {
    chartData: [
      { name: '通信', value: comm, color: '#4DF5F8' },
      { name: '检测器', value: det, color: '#FFA033' },
      { name: '灯控', value: lamp, color: '#FFF587' },
      { name: '冲突', value: conflict, color: '#FF4D4F' },
    ],
    centerTitle: Math.round(faultTotal / total * 100) + '%',
    centerSubTitle: `${faultTotal}/${total}`,
  }

  return ok({ onlineChart, faultChart })
}

/** GET /api/overview/top-charts — 总览Tab顶部图表（动态） */
export async function apiGetOverviewTopCharts() {
  await delay(150)
  const res = await apiGetDeviceStatus()
  return ok({ onlineStatus: res.data, deviceStatus: res.data })
}

/**
 * GET /api/map/legend-config — 地图标注线路配置
 */
export async function apiGetMapLegendConfig() {
  await delay(150)
  const tzPoints = DB.points.filter(p => p.node && p.node.includes('通州'))
  const lngs = tzPoints.map(p => p.lng), lats = tzPoints.map(p => p.lat)
  const [minLng, maxLng] = [Math.min(...lngs), Math.max(...lngs)]
  const [minLat, maxLat] = [Math.min(...lats), Math.max(...lats)]
  const midLat = (minLat + maxLat) / 2
  const hStep = (maxLat - minLat) / 5, vStep = (maxLng - minLng) / 8

  return ok([
    { name: '中心计划',   start: [minLng, midLat + hStep],     end: [maxLng, midLat + hStep],     color: '#004CDE' },
    { name: '干线协调',   start: [minLng, midLat],             end: [maxLng, midLat],             color: '#13C373' },
    { name: '勤务路线',   start: [minLng, midLat - hStep],     end: [maxLng, midLat - hStep],     color: '#BC301D' },
    { name: '定周期控制', start: [minLng + vStep, maxLat],     end: [minLng + vStep, minLat],     color: '#3296FA' },
    { name: '感应控制',   start: [minLng + vStep * 2, maxLat], end: [minLng + vStep * 2, minLat], color: '#FF864C' },
    { name: '自适应控制', start: [minLng + vStep * 3, maxLat], end: [minLng + vStep * 3, minLat], color: '#9F6EFE' },
    { name: '手动控制',   start: [minLng + vStep * 4, maxLat], end: [minLng + vStep * 4, minLat], color: '#EB9F36' },
    { name: '特殊控制',   start: [minLng + vStep * 5, maxLat], end: [minLng + vStep * 5, minLat], color: '#A26218' },
    { name: '离线',       start: [minLng, maxLat - hStep * 0.3], end: [maxLng, maxLat - hStep * 0.3], color: '#7A7A7A' },
    { name: '降级',       start: [minLng, minLat + hStep * 0.3], end: [maxLng, minLat + hStep * 0.3], color: '#D9C13B' },
    { name: '故障',       start: [maxLng - vStep * 0.5, maxLat], end: [maxLng - vStep * 0.5, minLat], color: '#FF3938' },
  ])
}

/**
 * GET /api/devices/fault-status
 * 设备故障统计（匹配 DeviceStatusTabs 组件的 statusData 格式）
 * keys: signalMachineStatus, detectorStatus, trafficLightStatus
 */
export async function apiGetDeviceFaultStatus() {
  await delay(200)
  const dt = DB.deviceStatus.detector
  const cam = DB.deviceStatus.camera

  // ── 信号机故障：从共享缓存获取，确保与在线状态的离线数一致 ──
  const snap = _getSmFaultSnapshot()
  const smTotal = snap.total
  const smFaultTotal = snap.faultTotal
  const smFaultList = [
    { name: '正常', value: Math.max(0, smTotal - smFaultTotal), color: '#A0E551' },
    { name: '控制板报警', value: snap.ctrlBoard, color: '#FF4545' },
    { name: '相位板报警', value: snap.phaseBoard, color: '#D42A2A' },
    { name: '检测板报警', value: snap.detBoard, color: '#9B1B1B' },
    { name: '黄闪报警', value: snap.yellowFlash, color: '#5C0E0E' },
  ]

  // ── 检测器故障 ──
  const dtTotal = dt.chartData[0].value + dt.chartData[1].value
  const dtFault = Math.max(0, _fluctuate(dt.chartData[1].value, 5))
  const dtCommFault = Math.max(0, Math.floor(dtFault * 0.6))

  // ── 红绿灯故障 ──
  const camTotal = cam.chartData[0].value + cam.chartData[1].value
  const camFault = Math.max(0, _fluctuate(cam.chartData[1].value, 2))
  const camConflict = Math.max(0, Math.floor(camFault * 0.5))

  return ok({
    signalMachineStatus: {
      centerTitle: smFaultTotal + '',
      centerSubTitle: `${smFaultTotal}/${smTotal}`,
      chartData: smFaultList,
    },
    detectorStatus: {
      centerTitle: dtFault + '',
      centerSubTitle: `${dtFault}/${dtTotal}`,
      chartData: [
        { name: '通信故障', value: dtCommFault, color: '#C6302B' },
        { name: '数据异常', value: Math.max(0, dtFault - dtCommFault), color: '#faad14' },
      ]
    },
    trafficLightStatus: {
      centerTitle: camFault + '',
      centerSubTitle: `${camFault}/${camTotal}`,
      chartData: [
        { name: '红绿冲突', value: camConflict, color: '#C6302B' },
        { name: '红灯故障', value: Math.max(0, camFault - camConflict), color: '#8F1E1E' },
      ]
    },
  })
}