'use client'

import { createContext, useEffect, useState } from 'react'
import { useCurrentUser } from '@/hooks/auth'
import { NimLoginProvider } from './NimLoginContext'
import { useGetIMAccount, useIMAccount } from '@/hooks/useIm'
import { ConversationProvider } from './ConversationContext'
import { NimMsgProvider } from './NimMsgContext'
import { NimUserProvider } from './NimUserContext'

// 动态导入类型
type V2NIM = any
type V2NIMLoginStatus = any

// 延迟加载的 NIM 实例
let nimInstance: V2NIM | null = null

// 初始化 NIM 实例(仅在客户端)
const getNimInstance = () => {
  if (typeof window === 'undefined') {
    return null
  }

  if (!nimInstance) {
    // 动态导入 SDK
    const V2NIM = require('nim-web-sdk-ng').default
    nimInstance = V2NIM.getInstance(
      {
        appkey: process.env.NEXT_PUBLIC_NIM_APP_KEY || '2d6abc076f434fc52320c7118de5fead',
        debugLevel: 'error', // 设置日志 level
        apiVersion: 'v2',
        enableV2CloudConversation: true,
      },
      {
        V2NIMLoginServiceConfig: {
          lbsUrls: ['https://lbs.netease.im/lbs/webconf'],
          linkUrl: 'weblink01-sg.netease.im:443',
        },
      }
    )
  }

  return nimInstance
}

const NimChatContext = createContext<{
  nim: V2NIM | null
  isNimLoggedIn: boolean
  nimLoginStatus: V2NIMLoginStatus | null
}>({
  nim: null,
  isNimLoggedIn: false,
  nimLoginStatus: null,
})

export const NimChatProvider = ({ children }: { children: React.ReactNode }) => {
  const [isNimLoggedIn, setIsNimLoggedIn] = useState(false)
  const [nimLoginStatus, setNimLoginStatus] = useState<V2NIMLoginStatus | null>(null)
  const [hasInitialized, setHasInitialized] = useState(false)
  const [nim, setNim] = useState<V2NIM | null>(null)

  const { data: imAccount } = useGetIMAccount()
  const { data: user } = useCurrentUser()

  // 初始化 NIM 实例(仅在客户端)
  useEffect(() => {
    const instance = getNimInstance()
    setNim(instance)
  }, [])

  // 初始化和检查登录状态
  useEffect(() => {
    if (!nim || hasInitialized || !user || !imAccount) return

    const init = async () => {
      // 只有在未登录状态下才执行登录
      console.log('NIM 开始登录...')
      await nim.V2NIMLoginService.login(imAccount.accountId, imAccount.token, {
        retryCount: 5,
      })
      setIsNimLoggedIn(true)
      setHasInitialized(true)
    }

    // 检查当前登录状态
    const currentStatus = nim.V2NIMLoginService.getLoginStatus()
    console.log('NIM 当前登录状态:', currentStatus)
    setNimLoginStatus(currentStatus)

    // 如果已经登录，更新状态
    if (currentStatus === 1) {
      console.log('NIM 已经登录，跳过重新登录')
      setIsNimLoggedIn(true)
      setHasInitialized(true)
      return
    }

    init()
  }, [nim, hasInitialized, user, imAccount])

  // 在 nim 初始化之前不渲染子组件
  if (!nim) {
    return null
  }

  return (
    <NimUserProvider nim={nim}>
      <ConversationProvider nim={nim}>
        <NimMsgProvider nim={nim}>
          <NimLoginProvider nim={nim}>
            <NimChatContext.Provider
              value={{
                nim,
                isNimLoggedIn,
                nimLoginStatus,
              }}
            >
              {children}
            </NimChatContext.Provider>
          </NimLoginProvider>
        </NimMsgProvider>
      </ConversationProvider>
    </NimUserProvider>
  )
}

export default NimChatContext
