import { ElementType, memo, Suspense } from 'react'
import classNames from 'classnames'
import PdfLogsViewer from './pdf-logs-viewer'
import PdfViewer from './pdf-viewer'
import { FullSizeLoadingSpinner } from '../../../shared/components/loading-spinner'
import PdfHybridPreviewToolbar from './pdf-preview-hybrid-toolbar'
import { useDetachCompileContext as useCompileContext } from '../../../shared/context/detach-compile-context'
import { PdfPreviewMessages } from './pdf-preview-messages'
import CompileTimeWarningUpgradePrompt from './compile-time-warning-upgrade-prompt'
import { PdfPreviewProvider } from './pdf-preview-provider'
import importOverleafModules from '../../../../macros/import-overleaf-module.macro'

const pdfPreviewPromotions = importOverleafModules('pdfPreviewPromotions') as {
  import: { default: ElementType }
  path: string
}[]

function PdfPreviewPane() {
  const { pdfUrl, hasShortCompileTimeout } = useCompileContext()
  const classes = classNames('pdf', 'full-size', {
    'pdf-empty': !pdfUrl,
  })
  return (
    <div className={classes}>
      <PdfPreviewProvider>
        <PdfHybridPreviewToolbar />
        <PdfPreviewMessages>
          {pdfPreviewPromotions.map(
            ({ import: { default: Component }, path }) => (
              <Component key={path} />
            )
          )}
          {hasShortCompileTimeout && <CompileTimeWarningUpgradePrompt />}
        </PdfPreviewMessages>
        <Suspense fallback={<FullSizeLoadingSpinner delay={500} />}>
          <div className="pdf-viewer">
            <PdfViewer />
          </div>
        </Suspense>
        <PdfLogsViewer />
      </PdfPreviewProvider>
    </div>
  )
}

export default memo(PdfPreviewPane)