"use client"

import { useEffect, useState } from 'react'
import { useMutation } from '@tanstack/react-query'
import { Label } from '@/components/ui/label'
import { Input } from '@/components/ui/input'
import { Button } from '@/components/ui/button'
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
  DialogTrigger,
} from '@/components/ui/dialog'
import { useTranslation } from 'react-i18next'
import { ServerSelector } from '../base/server-selector'
import { ClientSelector } from '../base/client-selector'
import { TypedProxyForm } from '../frpc/proxy_form'
import { ProxyType, TypedProxyConfig } from '@/types/proxy'
import { BaseSelector } from '../base/selector'
import { createProxyConfig } from '@/api/proxy'
import { ClientConfig } from '@/types/client'
import { ObjToUint8Array } from '@/lib/utils'
import { VisitPreview } from '../base/visit-preview'
import { ProxyConfig, Server } from '@/lib/pb/common'
import { TypedProxyConfigValid } from '@/lib/consts'
import { toast } from 'sonner'
import { $proxyTableRefetchTrigger } from '@/store/refetch-trigger'

export type ProxyConfigMutateDialogProps = {
  overwrite?: boolean
  defaultProxyConfig?: TypedProxyConfig
  defaultOriginalProxyConfig?: ProxyConfig
  disableChangeProxyName?: boolean
}

export const ProxyConfigMutateDialog = ({ ...props }: ProxyConfigMutateDialogProps) => {
  const { t } = useTranslation()

  return (
    <Dialog>
      <DialogTrigger asChild>
        <Button variant="outline" className='w-fit'>
          {t('proxy.config.create')}
        </Button>
      </DialogTrigger>
      <DialogContent className='max-h-screen overflow-auto'>
        <ProxyConfigMutateForm {...props} />
      </DialogContent>
    </Dialog>
  )
}

export const ProxyConfigMutateForm = ({ overwrite, defaultProxyConfig, defaultOriginalProxyConfig, disableChangeProxyName }: ProxyConfigMutateDialogProps) => {
  const { t } = useTranslation()
  const [newClientID, setNewClientID] = useState<string | undefined>()
  const [newServerID, setNewServerID] = useState<string | undefined>()
  const [proxyConfigs, setProxyConfigs] = useState<TypedProxyConfig[]>([])
  const [proxyName, setProxyName] = useState<string | undefined>('')
  const [proxyType, setProxyType] = useState<ProxyType>('http')
  const [selectedServer, setSelectedServer] = useState<Server | undefined>()
  const supportedProxyTypes: ProxyType[] = ["http", "tcp", "udp"]

  const createProxyConfigMutation = useMutation({
    mutationKey: ['createProxyConfig', newClientID, newServerID],
    mutationFn: () => createProxyConfig({
      clientId: newClientID!,
      serverId: newServerID!,
      config: ObjToUint8Array({
        proxies: proxyConfigs
      } as ClientConfig),
      overwrite,
    }),
    onSuccess: () => {
      toast(t('proxy.config.create_success'))
      $proxyTableRefetchTrigger.set(Math.random())
    },
    onError: (e) => {
      toast(t('proxy.config.create_failed'), {
        description: JSON.stringify(e),
      })
      $proxyTableRefetchTrigger.set(Math.random())
    }
  })

  useEffect(() => {
    if (proxyName && proxyType) {
      setProxyConfigs([{ name: proxyName, type: proxyType }])
    }
  }, [proxyName, proxyType])

  useEffect(() => {
    if (defaultProxyConfig && defaultOriginalProxyConfig) {
      setProxyConfigs([defaultProxyConfig])
      setProxyType(defaultProxyConfig.type)
      setProxyName(defaultProxyConfig.name)
      setNewClientID(defaultOriginalProxyConfig.originClientId)
      setNewServerID(defaultOriginalProxyConfig.serverId)
    }
  }, [defaultProxyConfig, defaultOriginalProxyConfig])

  return (
    <>
      <Label>{t('proxy.config.select_server')} </Label>
      <ServerSelector setServerID={setNewServerID} serverID={newServerID} setServer={setSelectedServer} />
      <Label>{t('proxy.config.select_client')} </Label>
      <ClientSelector setClientID={setNewClientID} clientID={newClientID} />
      <Label>{t('proxy.config.select_proxy_type')} </Label>
      <BaseSelector
        dataList={supportedProxyTypes.map((type) => ({ value: type, label: type }))}
        value={proxyType}
        setValue={(value) => { setProxyType(value as ProxyType) }}
      />
      <div className='flex flex-row w-full overflow-auto'>
        {proxyConfigs && selectedServer && proxyConfigs.length > 0 &&
          proxyConfigs[0] && TypedProxyConfigValid(proxyConfigs[0]) &&
          <div className='flex flex-col'>
            <VisitPreview server={selectedServer} typedProxyConfig={proxyConfigs[0]} />
          </div>
        }
      </div>
      <Label>{t('proxy.config.proxy_name')} </Label>
      <Input className='text-sm' defaultValue={proxyName} onChange={(e) => setProxyName(e.target.value)} disabled={disableChangeProxyName} />
      {proxyName && newClientID && newServerID && <TypedProxyForm
        serverID={newServerID}
        clientID={newClientID}
        proxyName={proxyName}
        defaultProxyConfig={proxyConfigs && proxyConfigs.length > 0 ? proxyConfigs[0] : undefined}
        clientProxyConfigs={proxyConfigs}
        setClientProxyConfigs={setProxyConfigs}
        enablePreview={false}
      />}
      <Button
        disabled={!TypedProxyConfigValid(proxyConfigs[0])}
        onClick={() => {
          if (!TypedProxyConfigValid(proxyConfigs[0])) {
            toast(t('proxy.config.invalid_config'))
            return
          }
          createProxyConfigMutation.mutate()
        }} >{t('proxy.config.submit')}</Button>
    </>
  )
}