const fs = require("fs")
const _ = require("lodash");
const Service = require("egg").Service;
class HomeService extends Service {
  //设置收藏数据
  async setRouterFav(params) {
    let { ctx } = this
    let pathStr = `${ctx.app.baseDir}/app/public/task/${_.get(params, ["routeList", 0, "map"])}/${params.did}/${params.pid}`
    fs.mkdirSync(pathStr, { recursive: true, })
    fs.writeFileSync(`${pathStr}/routeList.json`, JSON.stringify(params, null, 2))
    return { haserror: false, msg: `${pathStr}/routeList.json：成功写入。` }
  }
  //获取收藏数据
  async getRouterFav(params) {
    let { ctx } = this
    try {
      let pathStr = `${ctx.app.baseDir}/app/public/task/${_.get(params, ["mapName"])}/${params.did}/${params.pid}/routeList.json`
      let readResult = fs.readFileSync(pathStr, { encoding: "utf8" })
      return readResult
    } catch (error) {
      return {
        ...params,
        routeList: []
      }
    }
  }
  //获取瓦片地图
  async getMapPng(params) {
    let { ctx } = this
    let pathObj = _.drop(_.compact(_.split(params.url, "/")))
    let z = parseInt(pathObj[1]) - 1
    let y = parseInt(pathObj[2])
    let x = parseInt(pathObj[3])
    let pngPath = `${ctx.app.baseDir}/app/public/map/${pathObj[0]}/${z}/${y}/${x}.png`
    return pngPath
  }
}

module.exports = HomeService;