{
  "properties" : { },
  "id" : "c3d4e5f678901234567890abcdef0123",
  "script" : null,
  "groupId" : "f8e3d2c1b0a94e5f8a7b6c5d4e3f2a1",
  "name" : "市场实时监控",
  "createTime" : 1781199600000,
  "updateTime" : null,
  "lock" : null,
  "createBy" : "admin",
  "updateBy" : "admin",
  "path" : "/market-realtime-monitor",
  "method" : "GET",
  "parameters" : [ ],
  "options" : [ ],
  "requestBody" : "",
  "headers" : [ ],
  "paths" : [ ],
  "responseBody" : null,
  "description" : "市场实时监控：视频监控设备列表，数据源 iot_device_video + iot_device_video_data 最新一条（只读）。",
  "requestBodyDefinition" : null,
  "responseBodyDefinition" : null
}
================================
// 只读查询，不修改任何数据

var sql = """
SELECT
  v.id,
  v.name,
  v.number,
  v.location,
  v.address,
  v.status,
  v.play_url,
  v.hd_play_url,
  v.preview_img_url,
  v.img,
  v.channel_number,
  v."index" AS sort_index,
  v.last_capture_time,
  d.stream_url AS latest_stream_url,
  d.snapshot_url AS latest_snapshot_url,
  d.online_status AS latest_online_status,
  d.stream_status AS latest_stream_status,
  d.fault_code AS latest_fault_code
FROM iot_device_video v
LEFT JOIN LATERAL (
  SELECT
    stream_url,
    snapshot_url,
    online_status,
    stream_status,
    fault_code
  FROM iot_device_video_data
  WHERE device_id = v.id
  ORDER BY collect_time DESC NULLS LAST
  LIMIT 1
) d ON true
WHERE COALESCE(v.del_flag, '0') = '0'
  AND COALESCE(v.is_show, true) = true
ORDER BY v."index" NULLS LAST, v.name
"""

var rows = db.select(sql)
var cameras = []

var pickText = (row, camelKey, snakeKey) => {
  if (!row) {
    return ''
  }
  if (row[camelKey]) {
    return row[camelKey]
  }
  if (row[snakeKey]) {
    return row[snakeKey]
  }
  return ''
}

var toUpperText = (text) => {
  if (!text) {
    return ''
  }
  return ('' + text).toUpperCase()
}

var mapStatus = (row) => {
  var deviceStatus = pickText(row, 'status', 'status')
  var onlineStatus = pickText(row, 'latestOnlineStatus', 'latest_online_status')
  var faultCode = pickText(row, 'latestFaultCode', 'latest_fault_code')
  var deviceUpper = toUpperText(deviceStatus)

  if (deviceUpper === 'OFFLINE') {
    return 'offline'
  }
  if (deviceUpper === 'ERROR' || deviceUpper === 'FAULT') {
    return 'error'
  }
  if (faultCode) {
    return 'error'
  }
  if (onlineStatus) {
    var onlineUpper = toUpperText(onlineStatus)
    if (onlineUpper === 'OFFLINE') {
      return 'offline'
    }
    if (onlineUpper === 'ERROR' || onlineUpper === 'FAULT') {
      return 'error'
    }
  }
  return 'online'
}

var pickStreamUrl = (row) => {
  var hd = pickText(row, 'hdPlayUrl', 'hd_play_url')
  if (hd) {
    return hd
  }
  var play = pickText(row, 'playUrl', 'play_url')
  if (play) {
    return play
  }
  return pickText(row, 'latestStreamUrl', 'latest_stream_url')
}

var pickHdStreamUrl = (row) => {
  return pickText(row, 'hdPlayUrl', 'hd_play_url')
}

var pickPlayUrl = (row) => {
  return pickText(row, 'playUrl', 'play_url')
}

var pickPreviewUrl = (row) => {
  var preview = pickText(row, 'previewImgUrl', 'preview_img_url')
  if (preview) {
    return preview
  }
  var img = pickText(row, 'img', 'img')
  if (img) {
    return img
  }
  return pickText(row, 'latestSnapshotUrl', 'latest_snapshot_url')
}

if (rows && rows.length > 0) {
  for (row in rows) {
    cameras.push({
      id: pickText(row, 'id', 'id'),
      name: pickText(row, 'name', 'name'),
      number: pickText(row, 'number', 'number'),
      location: pickText(row, 'location', 'location'),
      address: pickText(row, 'address', 'address'),
      channelNumber: row.channelNumber != null ? row.channelNumber : row.channel_number,
      sortIndex: row.sortIndex != null ? row.sortIndex : row.sort_index,
      status: mapStatus(row),
      resolution: '1920x1080',
      preview: pickPreviewUrl(row),
      hdStreamUrl: pickHdStreamUrl(row),
      playUrl: pickPlayUrl(row),
      streamUrl: pickStreamUrl(row)
    })
  }
}

return {
  pageSize: 2,
  autoPlayInterval: 10000,
  cameras: cameras
}