/**
 * 地图工具函数
 */
import { Style, Text, Circle, Fill, Stroke, Icon } from 'ol/style'
import { Feature } from 'ol'
import type { MarkerData, DetectorInfo } from '../types/map.types'
import { STATUS_DICT, STATUS_PRIORITY, STATUS_ORDER } from '../constants/map.constants'

/**
 * 从字典中查找状态信息
 */
export const findStatusInfo = (
  dict: (typeof STATUS_DICT)[keyof typeof STATUS_DICT],
  value: string
) => {
  return dict.find((item) => item.value === value)
}

/**
 * 获取状态映射
 */
export const getStatusMapping = (type: keyof typeof STATUS_DICT, value: string) => {
  const info = findStatusInfo(STATUS_DICT[type], value)
  return info ? `${type}_${value}` : null
}

/**
 * 根据字典数据获取设备最高优先级状态
 */
export const getHighestPriorityStatus = (markerData: MarkerData): keyof typeof STATUS_PRIORITY => {
  const statuses: Array<keyof typeof STATUS_PRIORITY> = []

  // 检查各种状态
  const gasStatus = getStatusMapping('gas', String(markerData.gasStatus))
  const batteryStatus = getStatusMapping('battery', String(markerData.batteryStatus))
  const fenceStatus = getStatusMapping('fence', String(markerData.fenceStatus))
  const onlineStatus = String(markerData.onlineStatus) === '0' ? 'offline' : null

  // 收集非正常状态
  if (gasStatus && markerData.gasStatus !== 0)
    statuses.push(gasStatus as keyof typeof STATUS_PRIORITY)
  if (batteryStatus && markerData.batteryStatus !== 0)
    statuses.push(batteryStatus as keyof typeof STATUS_PRIORITY)
  if (fenceStatus && markerData.fenceStatus !== 0)
    statuses.push(fenceStatus as keyof typeof STATUS_PRIORITY)
  if (onlineStatus) statuses.push(onlineStatus)

  // 如果没有报警状态，则为正常
  if (statuses.length === 0) return 'normal'

  // 返回优先级最高的状态
  return statuses.reduce((prev, current) =>
    STATUS_PRIORITY[prev] < STATUS_PRIORITY[current] ? prev : current
  )
}

/**
 * 根据字典数据获取状态颜色
 */
export const getStatusColor = (status: keyof typeof STATUS_PRIORITY): string => {
  if (status === 'normal') return '#67c23a'
  if (status === 'offline') return STATUS_DICT.online[0].cssClass

  const [type, value] = status.split('_') as [keyof typeof STATUS_DICT, string]
  const info = findStatusInfo(STATUS_DICT[type], value)
  return info?.cssClass || '#67c23a'
}

/**
 * 根据字典数据获取状态标签
 */
export const getStatusLabel = (status: keyof typeof STATUS_PRIORITY): string => {
  if (status === 'normal') return '正常'
  if (status === 'offline') return STATUS_DICT.online[0].label

  const [type, value] = status.split('_') as [keyof typeof STATUS_DICT, string]
  const info = findStatusInfo(STATUS_DICT[type], value)
  return info?.label || '正常'
}

/**
 * 创建位置图标SVG
 */
export const createLocationIconSVG = (color: string, size: number = 24) => {
  return `data:image/svg+xml;charset=utf-8,${encodeURIComponent(`
    <svg width="${size}" height="${size}" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
      <path d="M12 2C8.13 2 5 5.13 5 9c0 5.25 7 13 7 13s7-7.75 7-13c0-3.87-3.13-7-7-7zm0 9.5c-1.38 0-2.5-1.12-2.5-2.5s1.12-2.5 2.5-2.5 2.5 1.12 2.5 2.5-1.12 2.5-2.5 2.5z" fill="${color}"/>
      <circle cx="12" cy="9" r="2" fill="white"/>
    </svg>
  `)}`
}

/**
 * 创建标记样式
 */
export const createMarkerStyle = (
  markerData: MarkerData | keyof typeof STATUS_PRIORITY,
  isCluster: boolean = false,
  clusterSize?: number
) => {
  // 如果是字符串，说明是状态值
  const status: keyof typeof STATUS_PRIORITY =
    typeof markerData === 'string'
      ? (markerData as keyof typeof STATUS_PRIORITY)
      : getHighestPriorityStatus(markerData)

  const color = getStatusColor(status)

  if (isCluster && clusterSize) {
    // 聚合标记样式
    return new Style({
      image: new Circle({
        radius: Math.min(20 + clusterSize * 2, 40),
        fill: new Fill({
          color: color + '80' // 添加透明度
        }),
        stroke: new Stroke({
          color: color,
          width: 2
        })
      }),
      text: new Text({
        text: clusterSize.toString(),
        fill: new Fill({
          color: '#ffffff'
        }),
        font: 'bold 14px Arial'
      })
    })
  } else {
    // 单个标记样式 - 使用位置图标
    return new Style({
      image: new Icon({
        src: createLocationIconSVG(color, 24),
        scale: 1,
        anchor: [0.5, 1], // 锚点设置在底部中心
        anchorXUnits: 'fraction',
        anchorYUnits: 'fraction'
      })
    })
  }
}

/**
 * 生成探测器列表项HTML
 */
export const createDetectorListItem = (detector: DetectorInfo) => `
  <div style="display: flex; align-items: center; padding: 6px 0; border-bottom: 1px solid #f0f0f0;">
    <div style="width: 10px; height: 10px; border-radius: 50%; background-color: ${detector.statusColor}; margin-right: 10px; flex-shrink: 0;"></div>
    <div style="flex: 1; min-width: 0;">
      <div style="font-weight: 500; font-size: 13px; color: #333; margin-bottom: 2px;">${detector.name}</div>
      <div style="color: ${detector.statusColor}; font-size: 11px; font-weight: 400;">${detector.statusLabel}</div>
    </div>
  </div>
`

/**
 * 生成聚合标记弹窗HTML
 */
export const createClusterPopupHTML = (detectorList: DetectorInfo[]) => {
  const detectorListHTML = detectorList.map(createDetectorListItem).join('')

  return `
    <div style="max-height: 250px; overflow-y: auto; padding-right: 4px;">
      ${detectorListHTML}
    </div>
  `
}

/**
 * 获取聚合标记数据
 */
export const getClusterMarkerData = (features: Feature[]): keyof typeof STATUS_PRIORITY => {
  // 收集所有标记的状态
  const allStatuses: Array<keyof typeof STATUS_PRIORITY> = []

  features.forEach((feature) => {
    const markerData = feature.get('markerData') as MarkerData
    if (markerData) {
      const status = getHighestPriorityStatus(markerData)
      allStatuses.push(status)
    }
  })

  // 返回优先级最高的状态
  if (allStatuses.length === 0) return 'normal'

  return allStatuses.reduce((prev, current) =>
    STATUS_PRIORITY[prev] < STATUS_PRIORITY[current] ? prev : current
  )
}

/**
 * 按优先级排序探测器列表
 */
export const sortDetectorsByPriority = (detectorList: DetectorInfo[]): DetectorInfo[] => {
  return detectorList.sort((a, b) => {
    const aPriority = STATUS_ORDER.indexOf(a.status as keyof typeof STATUS_PRIORITY)
    const bPriority = STATUS_ORDER.indexOf(b.status as keyof typeof STATUS_PRIORITY)
    return aPriority - bPriority
  })
}