RocketChat/Rocket.Chat

import type * as UiKit from '@rocket.chat/ui-kit';

import { type Value, getInitialValue } from './getInitialValue';
import { hasElement } from './hasElement';
import { hasElements } from './hasElements';

const isActionableElement = (
  element: UiKit.BlockElement | UiKit.TextObject
): element is UiKit.ActionableElement =>
  'actionId' in element && typeof element.actionId === 'string';

const reduceInitialValuesFromLayoutBlock = (
  state: { [actionId: string]: Value },
  block: UiKit.LayoutBlock
) => {
  if (hasElement(block)) {
    if (isActionableElement(block.element)) {
      state[block.element.actionId] = {
        value: getInitialValue(block.element),
        blockId: block.blockId,
      };
    }
  }

  if (hasElements(block)) {
    for (const element of block.elements) {
      if (isActionableElement(element)) {
        state[element.actionId] = {
          value: getInitialValue(element),
          blockId: block.blockId,
        };
      }
    }
  }

  return state;
};

export const extractInitialStateFromLayout = (blocks: UiKit.LayoutBlock[]) =>
  blocks.reduce(reduceInitialValuesFromLayoutBlock, {});