export function mergeInteractions()

in src/reducers/vis-state-merger.js [188:245]
49 lines of code
7 McCabe index (conditional complexity)

export function mergeInteractions(state, interactionToBeMerged) {
  const merged = {};
  const unmerged = {};

  if (interactionToBeMerged) {
    Object.keys(interactionToBeMerged).forEach(key => {
      if (!state.interactionConfig[key]) {
        return;
      }

      const currentConfig = state.interactionConfig[key].config;

      const {enabled, ...configSaved} = interactionToBeMerged[key] || {};
      let configToMerge = configSaved;

      if (key === 'tooltip') {
        const {mergedTooltip, unmergedTooltip} = mergeInteractionTooltipConfig(state, configSaved);

        // merge new dataset tooltips with original dataset tooltips
        configToMerge = {
          fieldsToShow: {
            ...currentConfig.fieldsToShow,
            ...mergedTooltip
          }
        };

        if (Object.keys(unmergedTooltip).length) {
          unmerged.tooltip = {fieldsToShow: unmergedTooltip, enabled};
        }
      }

      merged[key] = {
        ...state.interactionConfig[key],
        enabled,
        ...(currentConfig
          ? {
              config: pick(
                {
                  ...currentConfig,
                  ...configToMerge
                },
                Object.keys(currentConfig)
              )
            }
          : {})
      };
    });
  }

  return {
    ...state,
    interactionConfig: {
      ...state.interactionConfig,
      ...merged
    },
    interactionToBeMerged: unmerged
  };
}