import express from 'express'
import { orgs } from '../data/orgs.js'
import { channels, nextChannelId } from '../data/channels.js'
import { requireAuth } from '../middleware/requireAuth.js'

const router = express.Router()
router.use(requireAuth)

function orgName(orgId) {
  return orgs.find((o) => o.id === orgId)?.name || ''
}

function nowStr() {
  return new Date().toISOString().slice(0, 19).replace('T', ' ')
}

// ---------------- 核心企业管理 ----------------

router.get('/channel/list', (req, res) => {
  const { orgId, channelCode, channelName, page = 1, pageSize = 10 } = req.query || {}
  let list = channels
  if (orgId) list = list.filter((c) => c.orgId === orgId)
  if (channelCode) list = list.filter((c) => c.channelCode.includes(channelCode))
  if (channelName) list = list.filter((c) => c.name.includes(channelName))

  const total = list.length
  const start = (Number(page) - 1) * Number(pageSize)
  const pageList = list.slice(start, start + Number(pageSize)).map((c) => ({
    id: c.id,
    name: c.name,
    channelCode: c.channelCode,
    appCode: c.appCode,
    motherAccountBank: c.motherAccountBank,
    orgId: c.orgId,
    orgName: orgName(c.orgId),
    createdAt: c.createdAt
  }))
  res.json({ code: 200, msg: 'ok', data: { list: pageList, total } })
})

router.post('/channel', (req, res) => {
  const { name, channelCode, appCode, motherAccountBank, orgId } = req.body || {}
  if (!name) return res.json({ code: 40025, msg: '请输入渠道名称', data: null })
  if (!channelCode) return res.json({ code: 40026, msg: '请输入渠道编号', data: null })
  if (!appCode) return res.json({ code: 40027, msg: '请输入应用编号', data: null })
  if (!motherAccountBank) return res.json({ code: 40028, msg: '请输入母户开户行', data: null })
  if (!orgId || !orgs.some((o) => o.id === orgId)) {
    return res.json({ code: 40029, msg: '请选择有效的所属机构', data: null })
  }

  const channel = {
    id: nextChannelId(),
    name,
    channelCode,
    appCode,
    motherAccountBank,
    orgId,
    createdAt: nowStr()
  }
  channels.push(channel)
  res.json({ code: 200, msg: 'ok', data: channel })
})

router.put('/channel/:id', (req, res) => {
  const { id } = req.params
  const { name, channelCode, appCode, motherAccountBank, orgId } = req.body || {}
  const channel = channels.find((c) => c.id === id)
  if (!channel) return res.json({ code: 40404, msg: '核心企业不存在', data: null })
  if (!name) return res.json({ code: 40025, msg: '请输入渠道名称', data: null })
  if (!channelCode) return res.json({ code: 40026, msg: '请输入渠道编号', data: null })
  if (!appCode) return res.json({ code: 40027, msg: '请输入应用编号', data: null })
  if (!motherAccountBank) return res.json({ code: 40028, msg: '请输入母户开户行', data: null })
  if (!orgId || !orgs.some((o) => o.id === orgId)) {
    return res.json({ code: 40029, msg: '请选择有效的所属机构', data: null })
  }

  channel.name = name
  channel.channelCode = channelCode
  channel.appCode = appCode
  channel.motherAccountBank = motherAccountBank
  channel.orgId = orgId
  res.json({ code: 200, msg: 'ok', data: channel })
})

router.delete('/channel/batch', (req, res) => {
  const { ids } = req.body || {}
  if (!Array.isArray(ids) || ids.length === 0) {
    return res.json({ code: 40024, msg: '请选择要删除的核心企业', data: null })
  }
  const successIds = []
  const failed = []
  ids.forEach((id) => {
    const channel = channels.find((c) => c.id === id)
    if (!channel) {
      failed.push({ id, name: id, reason: '核心企业不存在' })
      return
    }
    successIds.push(id)
  })
  successIds.forEach((id) => {
    const index = channels.findIndex((c) => c.id === id)
    if (index !== -1) channels.splice(index, 1)
  })
  res.json({ code: 200, msg: 'ok', data: { successIds, failed } })
})

export default router