Function useGetIQData

client/src/api/iqdata/Queries.ts:37–182

(
  type: string,
  account: string,
  container: string,
  filePath: string,
  fftSize: number, // we grab 2x this many floats/ints
  taps: number[] = [1],
  pythonScript: string = INITIAL_PYTHON_SNIPPET,
  fftStepSize: number = 0
)

}

export function useGetIQData(
  type: string,
  account: string,
  container: string,
  filePath: string,
  fftSize: number, // we grab 2x this many floats/ints
  taps: number[] = [1],
  pythonScript: string = INITIAL_PYTHON_SNIPPET,
  fftStepSize: number = 0
) {
  const [pyodide, setPyodide] = useState<any>(null);

  async function initPyodide() {
    console.log('Loading pyodide...');
    const pyodide = await window.loadPyodide();
    await pyodide.loadPackage('numpy');
    await pyodide.loadPackage('matplotlib');
    return pyodide;
  }

  useEffect(() => {
    if (!pyodide && pythonScript && pythonScript !== INITIAL_PYTHON_SNIPPET && fftStepSize === 0) {
      initPyodide().then((pyodide) => {
        setPyodide(pyodide);
      });
    }
  }, [pythonScript, fftStepSize]);

  const queryClient = useQueryClient();
  const { filesQuery, dataSourcesQuery } = useUserSettings();
  const [fftsRequired, setStateFFTsRequired] = useState<number[]>([]);

  // enforce MAXIMUM_SAMPLES_PER_REQUEST by truncating if need be
  function setFFTsRequired(fftsRequired: number[]) {
    fftsRequired = fftsRequired.slice(
      0,
      fftsRequired.length > Math.ceil(MAXIMUM_SAMPLES_PER_REQUEST / fftSize)
        ? Math.ceil(MAXIMUM_SAMPLES_PER_REQUEST / fftSize)
        : fftsRequired.length
    );
    setStateFFTsRequired(fftsRequired);
  }

  const { data: meta } = useMeta(type, account, container, filePath);

  const { instance } = useMsal();

  const iqDataClient = IQDataClientFactory(type, filesQuery.data, dataSourcesQuery.data, instance);

  // fetches iqData, this happens first, and the iqData is in one big continuous chunk
  const { data: iqData } = useQuery({
    queryKey: ['iqData', type, account, container, filePath, fftSize, fftsRequired],
    queryFn: async ({ signal }) => {
      const iqData = await iqDataClient.getIQDataBlocks(meta, fftsRequired, fftSize, signal);
      return iqData;
    },
    enabled: !!meta && !!filesQuery.data && !!dataSourcesQuery.data,
  });