@wordpress/core-data/build-module/locks/reducer.js

Access to and manipulation of core WordPress entities.

/**
 * Internal dependencies
 */
import { getNode, deepCopyLocksTreePath } from './utils';
const DEFAULT_STATE = {
  requests: [],
  tree: {
    locks: [],
    children: {}
  }
};

/**
 * Reducer returning locks.
 *
 * @param {Object} state  Current state.
 * @param {Object} action Dispatched action.
 *
 * @return {Object} Updated state.
 */
export default function locks(state = DEFAULT_STATE, action) {
  switch (action.type) {
    case 'ENQUEUE_LOCK_REQUEST':
      {
        const {
          request
        } = action;
        return {
          ...state,
          requests: [request, ...state.requests]
        };
      }
    case 'GRANT_LOCK_REQUEST':
      {
        const {
          lock,
          request
        } = action;
        const {
          store,
          path
        } = request;
        const storePath = [store, ...path];
        const newTree = deepCopyLocksTreePath(state.tree, storePath);
        const node = getNode(newTree, storePath);
        node.locks = [...node.locks, lock];
        return {
          ...state,
          requests: state.requests.filter(r => r !== request),
          tree: newTree
        };
      }
    case 'RELEASE_LOCK':
      {
        const {
          lock
        } = action;
        const storePath = [lock.store, ...lock.path];
        const newTree = deepCopyLocksTreePath(state.tree, storePath);
        const node = getNode(newTree, storePath);
        node.locks = node.locks.filter(l => l !== lock);
        return {
          ...state,
          tree: newTree
        };
      }
  }
  return state;
}
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