'use client'

import React from 'react'
import cn from 'classnames'
import { useRouter } from 'next/navigation'
import { useTranslation } from 'react-i18next'
import { useContext } from 'use-context-selector'
import useSWR from 'swr'
import Toast from '../../base/toast'
import s from './style.module.css'
import ExploreContext from '@/context/explore-context'
import type { App } from '@/models/explore'
import Category from '@/app/components/explore/category'
import AppCard from '@/app/components/explore/app-card'
import { fetchAppDetail, fetchAppList } from '@/service/explore'
import { importApp } from '@/service/apps'
import { useTabSearchParams } from '@/hooks/use-tab-searchparams'
import CreateAppModal from '@/app/components/explore/create-app-modal'
import type { CreateAppModalProps } from '@/app/components/explore/create-app-modal'
import Loading from '@/app/components/base/loading'
import { NEED_REFRESH_APP_LIST_KEY } from '@/config'
import { useAppContext } from '@/context/app-context'

type AppsProps = {
  pageType?: PageType
}

export enum PageType {
  EXPLORE = 'explore',
  CREATE = 'create',
}

const Apps = ({
  pageType = PageType.EXPLORE,
}: AppsProps) => {
  const { t } = useTranslation()
  const { isCurrentWorkspaceManager } = useAppContext()
  const router = useRouter()
  const { hasEditPermission } = useContext(ExploreContext)
  const allCategoriesEn = t('explore.apps.allCategories', { lng: 'en' })

  const [currCategory, setCurrCategory] = useTabSearchParams({
    defaultTab: allCategoriesEn,
  })
  const {
    data: { categories, allList },
  } = useSWR(
    ['/explore/apps'],
    () =>
      fetchAppList().then(({ categories, recommended_apps }) => ({
        categories,
        allList: recommended_apps.sort((a, b) => a.position - b.position),
      })),
    {
      fallbackData: {
        categories: [],
        allList: [],
      },
    },
  )

  const currList
    = currCategory === allCategoriesEn
      ? allList
      : allList.filter(item => item.category === currCategory)

  const [currApp, setCurrApp] = React.useState<App | null>(null)
  const [isShowCreateModal, setIsShowCreateModal] = React.useState(false)
  const onCreate: CreateAppModalProps['onConfirm'] = async ({
    name,
    icon,
    icon_background,
    description,
  }) => {
    const { export_data } = await fetchAppDetail(
      currApp?.app.id as string,
    )
    try {
      const app = await importApp({
        data: export_data,
        name,
        icon,
        icon_background,
        description,
      })
      setIsShowCreateModal(false)
      Toast.notify({
        type: 'success',
        message: t('app.newApp.appCreated'),
      })
      localStorage.setItem(NEED_REFRESH_APP_LIST_KEY, '1')
      if (!isCurrentWorkspaceManager) {
        router.push(`/app/${app.id}/overview`)
      }
      else {
        if (app.mode === 'workflow' || app.mode === 'advanced-chat')
          router.push(`/app/${app.id}/workflow`)
        router.push(`/app/${app.id}/configuration`)
      }
    }
    catch (e) {
      Toast.notify({ type: 'error', message: t('app.newApp.appCreateFailed') })
    }
  }

  if (!categories) {
    return (
      <div className="flex h-full items-center">
        <Loading type="area" />
      </div>
    )
  }

  return (
    <div className={cn(
      'flex flex-col',
      pageType === PageType.EXPLORE ? 'h-full border-l border-gray-200' : 'h-[calc(100%-76px)]',
    )}>
      {pageType === PageType.EXPLORE && (
        <div className='shrink-0 pt-6 px-12'>
          <div className={`mb-1 ${s.textGradient} text-xl font-semibold`}>{t('explore.apps.title')}</div>
          <div className='text-gray-500 text-sm'>{t('explore.apps.description')}</div>
        </div>
      )}
      <Category
        className={cn(pageType === PageType.EXPLORE ? 'mt-6 px-12' : 'px-8 py-2')}
        list={categories}
        value={currCategory}
        onChange={setCurrCategory}
        allCategoriesEn={allCategoriesEn}
      />
      <div className={cn(
        'relative flex flex-1 pb-6 flex-col overflow-auto bg-gray-100 shrink-0 grow',
        pageType === PageType.EXPLORE ? 'mt-6' : 'mt-0 pt-2',
      )}>
        <nav
          className={cn(
            s.appList,
            'grid content-start shrink-0',
            pageType === PageType.EXPLORE ? 'gap-4 px-6 sm:px-12' : 'gap-3 px-8',
          )}>
          {currList.map(app => (
            <AppCard
              key={app.app_id}
              isExplore={pageType === PageType.EXPLORE}
              app={app}
              canCreate={hasEditPermission}
              onCreate={() => {
                setCurrApp(app)
                setIsShowCreateModal(true)
              }}
            />
          ))}
        </nav>
      </div>
      {isShowCreateModal && (
        <CreateAppModal
          appName={currApp?.app.name || ''}
          show={isShowCreateModal}
          onConfirm={onCreate}
          onHide={() => setIsShowCreateModal(false)}
        />
      )}
    </div>
  )
}

export default React.memo(Apps)