/**
 * Copyright (c) 2015, Facebook, Inc.  All rights reserved.
 *
 * Facebook, Inc. ("Facebook") owns all right, title and interest, including
 * all intellectual property and other proprietary rights, in and to the React
 * Native CustomComponents software (the "Software").  Subject to your
 * compliance with these terms, you are hereby granted a non-exclusive,
 * worldwide, royalty-free copyright license to (1) use and copy the Software;
 * and (2) reproduce and distribute the Software as part of your own software
 * ("Your Software").  Facebook reserves all rights not expressly granted to
 * you in this license agreement.
 *
 * THE SOFTWARE AND DOCUMENTATION, IF ANY, ARE PROVIDED "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES (INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE) ARE DISCLAIMED.
 * IN NO EVENT SHALL FACEBOOK OR ITS AFFILIATES, OFFICERS, DIRECTORS OR
 * EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @flow
 */
'use strict';

import {InteractionManager} from 'react-native';

/**
 * This mixin provides safe versions of InteractionManager start/end methods
 * that ensures `clearInteractionHandle` is always called
 * once per start, even if the component is unmounted.
 */
var InteractionMixin = {
  componentWillUnmount: function() {
    while (this._interactionMixinHandles.length) {
      InteractionManager.clearInteractionHandle(
        this._interactionMixinHandles.pop()
      );
    }
  },

  _interactionMixinHandles: ([]: Array<number>),

  createInteractionHandle: function() {
    var handle = InteractionManager.createInteractionHandle();
    this._interactionMixinHandles.push(handle);
    return handle;
  },

  clearInteractionHandle: function(clearHandle: number) {
    InteractionManager.clearInteractionHandle(clearHandle);
    this._interactionMixinHandles = this._interactionMixinHandles.filter(
      handle => handle !== clearHandle
    );
  },

  /**
   * Schedule work for after all interactions have completed.
   *
   * @param {function} callback
   */
  runAfterInteractions: function(callback: Function) {
    InteractionManager.runAfterInteractions(callback);
  },
};

module.exports = InteractionMixin;