import { pdfjs } from 'react-pdf';

pdfjs.GlobalWorkerOptions.workerSrc = new URL(
  'pdfjs-dist/build/pdf.worker.min.mjs',
  import.meta.url,
).toString();

export default defineConfig({
  // ... existing config ...
  optimizeDeps: {
    exclude: ['pdfjs-dist'],
  },
});

import { CogniteFileViewer } from '@cognite/dune-industrial-components/file-viewer';

import { useDune } from '@cognite/dune';
const { sdk } = useDune();

<CogniteFileViewer
  source={{ type: 'internalId', id: file.id }}
  client={sdk}
  style={{ width: '100%', height: '600px' }}
/>

// By instance ID (data-modelled file — enables annotations)
<CogniteFileViewer
  source={{ type: 'instanceId', space: 'my-space', externalId: 'my-file' }}
  client={sdk}
/>

// By CDF internal ID
<CogniteFileViewer
  source={{ type: 'internalId', id: 12345 }}
  client={sdk}
/>

// By direct URL
<CogniteFileViewer
  source={{ type: 'url', url: 'https://...', mimeType: 'application/pdf' }}
/>

source={
  file.instanceId
    ? { type: 'instanceId', space: file.instanceId.space, externalId: file.instanceId.externalId }
    : { type: 'internalId', id: file.id }
}

<CogniteFileViewer
  // Required
  source={source}
  client={sdk}              // required for instanceId and internalId sources

  // PDF pagination
  page={page}               // controlled current page (1-indexed)
  onPageChange={setPage}
  onDocumentLoad={({ numPages }) => setNumPages(numPages)}

  // Zoom & pan (works on PDF and images)
  zoom={zoom}               // 1 = 100%; Ctrl/Cmd+wheel, pinch-to-zoom, and middle-click drag built in
  onZoomChange={setZoom}
  minZoom={0.25}            // default
  maxZoom={5}               // default
  panOffset={pan}           // controlled pan offset; resets on page change
  onPanChange={setPan}

  // Fit mode
  fitMode="width"           // 'width' fits to container width; 'page' fits entire page in container

  // Rotation (PDFs and images)
  rotation={rotation}       // 0 | 90 | 180 | 270

  // Diagram annotations (instanceId sources only)
  showAnnotations={true}    // default
  onAnnotationClick={(annotation) => { /* annotation.linkedResource has space + externalId */ }}
  onAnnotationHover={(annotation) => {}}

  // Custom annotation tooltip (replaces native <title> tooltip)
  renderAnnotationTooltip={(annotation, rect) => (
    <div style={{
      position: 'absolute',
      left: rect.x + rect.width,
      top: rect.y,
      zIndex: 11,
    }}>
      {annotation.text}
    </div>
  )}

  // Custom overlay (SVG paths, highlights, drawings — works on PDF and images)
  renderOverlay={({ width, height, originalWidth, originalHeight, pageNumber, rotation }) => (
    <svg
      width={width}
      height={height}
      viewBox={`0 0 ${originalWidth} ${originalHeight}`}
      preserveAspectRatio="none"
      style={{ position: 'absolute', top: 0, left: 0, pointerEvents: 'all' }}
    >
      <path d="..." stroke="cyan" fill="none" />
    </svg>
  )}

  // Custom renderers (all optional)
  renderLoading={() => <MySpinner />}
  renderError={(error) => <MyError message={error.message} />}
  renderUnsupported={(mimeType) => <div>Cannot preview {mimeType}</div>}

  // Layout
  className="..."
  style={{ width: '100%', height: '100%' }}
/>

const navigateToFile = (file: FileInfo) => {
  setSelectedFile(file);
  setPage(1);
  setZoom(1);
  setRotation(0);
};

{numPages > 0 && (
  <>
    <button disabled={page <= 1} onClick={() => setPage(p => p - 1)}>‹</button>
    <span>{page} / {numPages}</span>
    <button disabled={page >= numPages} onClick={() => setPage(p => p + 1)}>›</button>
  </>
)}

onAnnotationClick={(annotation) => {
  if (!annotation.linkedResource) return;
  const { space, externalId } = annotation.linkedResource;
  const linked = files.find(
    f => f.instanceId?.space === space && f.instanceId?.externalId === externalId
  );
  if (linked) navigateToFile(linked);
}}