import { adapters } from 'dcmjs';

const cornerstoneAdapters = adapters.Cornerstone;

/**
 * Checks if the given `displySet`can be rehydrated into the `MeasurementService`.
 *
 * @param {object} displaySet The SR `displaySet` to check.
 * @param {object[]} mappings The CornerstoneTools 4 mappings to the `MeasurementService`.
 * @returns {boolean} True if the SR can be rehydrated into the `MeasurementService`.
 */
export default function isRehydratable(displaySet, mappings) {
  if (!mappings || !mappings.length) {
    return false;
  }

  const mappingDefinitions = mappings.map(m => m.definition);
  const { measurements } = displaySet;

  const adapterKeys = Object.keys(cornerstoneAdapters).filter(
    adapterKey =>
      typeof cornerstoneAdapters[adapterKey]
        .isValidCornerstoneTrackingIdentifier === 'function'
  );

  const adapters = [];

  adapterKeys.forEach(key => {
    if (mappingDefinitions.includes(key)) {
      // Must have both a dcmjs adapter and a MeasurementService
      // Definition in order to be a candidate for import.
      adapters.push(cornerstoneAdapters[key]);
    }
  });

  for (let i = 0; i < measurements.length; i++) {
    const TrackingIdentifier = measurements[i].TrackingIdentifier;
    const hydratable = adapters.some(adapter =>
      adapter.isValidCornerstoneTrackingIdentifier(TrackingIdentifier)
    );

    if (hydratable) {
      return true;
    }
  }

  return false;
}