'use client'
import {Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle, DialogTrigger} from '@/components/ui/dialog'
import {Button} from '@/components/ui/button'
import alipay from '../_assets/alipay.svg'
import wechat from '../_assets/wechat.svg'
import balance from '../_assets/balance.svg'
import Image from 'next/image'
import {useContext, useEffect, useRef, useState} from 'react'
import {StoreContext, useProfileStore} from '@/components/providers/StoreProvider'
import {Alert, AlertDescription} from '@/components/ui/alert'
import {
  prepareResourceByAlipay,
  prepareResourceByWechat,
  CreateResourceReq,
  CreateResourceResp,
  createResourceByBalance,
  createResourceByAlipay,
  createResourceByWechat,
} from '@/actions/resource'
import {ApiResponse} from '@/lib/api'
import {toast} from 'sonner'
import {Loader} from 'lucide-react'
import {useRouter} from 'next/navigation'
import * as qrcode from 'qrcode'

export type PayProps = {
  method: 'alipay' | 'wechat' | 'balance'
  amount: number
  resource: CreateResourceReq

}

export default function Pay(props: PayProps) {

  const profile = useProfileStore(store => store.profile)
  const refreshProfile = useProfileStore(store => store.refreshProfile)

  const [open, setOpen] = useState(false)
  const [payInfo, setPayInfo] = useState<CreateResourceResp | undefined>()
  const canvas = useRef<HTMLCanvasElement>(null)
  useEffect(() => {
    if (canvas.current && payInfo) {
      qrcode.toCanvas(canvas.current, payInfo.pay_url, {
        width: 200,
        margin: 0,
      })
    }
  }, [payInfo])

  const onOpen = async () => {
    setOpen(true)

    if (props.method === 'balance') {
      return
    }

    let resp: ApiResponse<CreateResourceResp>
    switch (props.method) {
    case 'alipay':
      resp = await prepareResourceByAlipay(props.resource)
      break
    case 'wechat':
      resp = await prepareResourceByWechat(props.resource)
      break
    }
    if (!resp.success) {
      toast.error(`创建订单失败: ${resp.message}`)
      setOpen(false)
      return
    }

    setPayInfo(resp.data)
  }

  const router = useRouter()
  const onSubmit = async () => {
    let resp: ApiResponse
    try {
      switch (props.method) {
      case 'alipay':
        resp = await createResourceByAlipay({
          trade_no: payInfo!.trade_no,
        })
        break
      case 'wechat':
        resp = await createResourceByWechat({
          trade_no: payInfo!.trade_no,
        })
        break
      case 'balance':
        resp = await createResourceByBalance(props.resource)
        break
      }

      if (!resp.success) {
        throw new Error(resp.message)
      }

      toast.success('购买成功', {
        duration: 10 * 1000,
        closeButton: true,
        action: {
          label: `去提取`,
          onClick: () => router.push('/admin/extract'),
        },
      })

      setOpen(false)
      await refreshProfile()
    }
    catch (e) {
      console.log(e)
      toast.error('购买失败', {
        description: (e as Error).message,
      })
    }
  }

  return (
    <Dialog open={open} onOpenChange={setOpen}>
      <DialogTrigger asChild>
        <Button className={`mt-4 h-12`} onClick={onOpen}>
          立即支付
        </Button>
      </DialogTrigger>
      <DialogContent>
        <DialogHeader>
          <DialogTitle className={`flex gap-2 items-center`}>
            {props.method === 'alipay' && (<>
              <Image src={alipay} alt={`支付宝`} width={20} height={20}/>
              <span>支付宝</span>
            </>)}
            {props.method === 'wechat' && (<>
              <Image src={wechat} alt={`微信`} width={20} height={20}/>
              <span>微信</span>
            </>)}
            {props.method === 'balance' && (<>
              <Image src={balance} alt={`余额`} width={20} height={20}/>
              <span>余额支付</span>
            </>)}
          </DialogTitle>
        </DialogHeader>

        {props.method === 'balance' ? (
          profile && (
            <div className="flex flex-col gap-4">
              <div className="flex flex-col gap-1">
                <div className="flex justify-between items-center">
                  <span className="text-weak text-sm">账户余额</span>
                  <span className={`text-lg`}>{profile.balance}元</span>
                </div>
                <div className="flex justify-between items-center">
                  <span className="text-weak text-sm">支付金额</span>
                  <span className="text-lg text-accent">- {props.amount}元</span>
                </div>
                <hr className="my-2"/>
                <div className="flex justify-between items-center">
                  <span className="text-weak text-sm">支付后余额</span>
                  <span className={`text-lg ${profile.balance > props.amount ? 'text-done' : `text-fail`}`}>
                    {profile.balance - props.amount}元
                  </span>
                </div>
              </div>

              {profile.balance < props.amount && (
                <Alert variant="fail">
                  <AlertDescription>
                    余额不足，请先充值或选择其他支付方式
                  </AlertDescription>
                </Alert>
              )}

              {profile.balance >= props.amount && (
                <Alert>
                  <AlertDescription>
                    检查无误后，点击确认支付按钮完成支付
                  </AlertDescription>
                </Alert>
              )}
            </div>
          )
        ) : (
          <div className="flex flex-col items-center gap-4">
            <div className="flex flex-col items-center gap-3">
              <div className="bg-gray-100 size-50 flex items-center justify-center">
                {payInfo ? (
                  props.method === 'alipay'
                    ? <iframe src={payInfo.pay_url} className="w-full h-full"/>
                    : <canvas ref={canvas} className="w-full h-full"/>
                ) : (
                  <Loader size={40} className={`animate-spin text-weak`}/>
                )}
              </div>
              <p className="text-sm text-gray-600 text-center">
                请使用{props.method === 'alipay' ? '支付宝' : '微信'}扫码支付
              </p>
            </div>
            <div className="text-center space-y-1">
              <p className="font-medium">支付金额: <span className="text-accent">{props.amount}元</span></p>
              <p className="text-xs text-gray-500">订单号: {payInfo?.trade_no || '创建订单中...'}</p>
            </div>
          </div>
        )}

        <DialogFooter>
          <Button
            type="button"
            disabled={props.method === 'balance' && !!profile && profile.balance < props.amount}
            onClick={onSubmit}
          >
            {props.method === 'balance' ? '确认支付' : '已完成支付'}
          </Button>
          <Button
            type="button"
            theme="outline"
            onClick={() => setOpen(false)}
          >
            取消
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  )
}