const { readHostList, writeHostList, readSSHRecord, writeSSHRecord } = require('../utils')

function getHostList({ res }) {
  const data = readHostList()
  res.success({ data })
}

function saveHost({ res, request }) {
  let { body: { host: newHost, name, expired, expiredNotify, group, consoleUrl, remark } } = request
  if(!newHost || !name) return res.fail({ msg: 'missing params: name or host' })
  let hostList = readHostList()
  if(hostList.some(({ host }) => host === newHost)) return res.fail({ msg: `主机${ newHost }已存在` })
  hostList.push({ host: newHost, name, expired, expiredNotify, group, consoleUrl, remark })
  writeHostList(hostList)
  res.success()
}

function updateHost({ res, request }) {
  let { body: { host: newHost, name: newName, oldHost, expired, expiredNotify, group, consoleUrl, remark } } = request
  if(!newHost || !newName || !oldHost) return res.fail({ msg: '参数错误' })
  let hostList = readHostList()
  if(!hostList.some(({ host }) => host === oldHost)) return res.fail({ msg: `主机${ newHost }不存在` })
  let targetIdx = hostList.findIndex(({ host }) => host === oldHost)
  hostList.splice(targetIdx, 1, { name: newName, host: newHost, expired, expiredNotify, group, consoleUrl, remark })
  writeHostList(hostList)
  res.success()
}

function removeHost({ res, request }) {
  let { body: { host } } = request
  let hostList = readHostList()
  let hostIdx = hostList.findIndex(item => item.host === host)
  if(hostIdx === -1) return res.fail({ msg: `${ host }不存在` })
  hostList.splice(hostIdx, 1)
  writeHostList(hostList)
  // 查询是否存在ssh记录
  let sshRecord = readSSHRecord()
  let sshIdx = sshRecord.findIndex(item => item.host === host)
  let flag = sshIdx !== -1
  if(flag) sshRecord.splice(sshIdx, 1)
  writeSSHRecord(sshRecord)

  res.success({ data: `${ host }已移除, ${ flag ? '并移除ssh记录' : '' }` })
}

function updateHostSort({ res, request }) {
  let { body: { list } } = request
  if(!list) return res.fail({ msg: '参数错误' })
  let hostList = readHostList()
  if(hostList.length !== list.length) return res.fail({ msg: '失败: host数量不匹配' })
  let sortResult = []
  for (let i = 0; i < list.length; i++) {
    const curHost = list[i]
    let temp = hostList.find(({ host }) => curHost.host === host)
    if(!temp) return res.fail({ msg: `查找失败: ${ curHost.name }` })
    sortResult.push(temp)
  }
  writeHostList(sortResult)
  res.success({ msg: 'success' })
}

module.exports = {
  getHostList,
  saveHost,
  updateHost,
  removeHost,
  updateHostSort
}