import { Badge, Button } from '@janhq/uikit'
import { useAtomValue } from 'jotai'

import DownloadingState from '@/containers/Layout/BottomBar/DownloadingState'

import SystemItem from '@/containers/Layout/BottomBar/SystemItem'
import ProgressBar from '@/containers/ProgressBar'

import { appDownloadProgress } from '@/containers/Providers/Jotai'

import { MainViewState } from '@/constants/screens'

import { useActiveModel } from '@/hooks/useActiveModel'

import { useDownloadState } from '@/hooks/useDownloadState'
import { useGetAppVersion } from '@/hooks/useGetAppVersion'
import { useGetDownloadedModels } from '@/hooks/useGetDownloadedModels'
import useGetSystemResources from '@/hooks/useGetSystemResources'
import { useMainViewState } from '@/hooks/useMainViewState'

const BottomBar = () => {
  const { activeModel, stateModel } = useActiveModel()
  const { ram, cpu } = useGetSystemResources()
  const progress = useAtomValue(appDownloadProgress)
  const appVersion = useGetAppVersion()
  const { downloadedModels } = useGetDownloadedModels()
  const { setMainViewState } = useMainViewState()
  const { downloadStates } = useDownloadState()

  return (
    <div className="fixed bottom-0 left-16 z-20 flex h-12 w-[calc(100%-64px)] items-center justify-between border-t border-border bg-background/50 px-3">
      <div className="flex flex-shrink-0 items-center gap-x-2">
        <div className="flex items-center space-x-2">
          {progress && progress > 0 ? (
            <ProgressBar total={100} used={progress} />
          ) : null}
        </div>

        {stateModel.state === 'start' && stateModel.loading && (
          <SystemItem name="Starting:" value={stateModel.model || '-'} />
        )}
        {stateModel.state === 'stop' && stateModel.loading && (
          <SystemItem name="Stopping:" value={stateModel.model || '-'} />
        )}
        {!stateModel.loading && downloadedModels.length !== 0 && (
          <SystemItem
            name="Active model:"
            value={
              activeModel?.id || (
                <Badge themes="secondary">⌘e to show your model</Badge>
              )
            }
          />
        )}
        {downloadedModels.length === 0 &&
          !stateModel.loading &&
          downloadStates.length === 0 && (
            <Button
              size="sm"
              themes="outline"
              onClick={() => setMainViewState(MainViewState.ExploreModels)}
            >
              Download your first model
            </Button>
          )}

        <DownloadingState />
      </div>
      <div className="flex gap-x-2">
        <SystemItem name="CPU:" value={`${cpu}%`} />
        <SystemItem name="Mem:" value={`${ram}%`} />
        <span className="text-xs font-semibold ">
          Jan v{appVersion?.version ?? ''}
        </span>
      </div>
    </div>
  )
}

export default BottomBar