'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true
});
exports.default = void 0;

var _constants = require('../constants');

/**
 * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
class Prompt {
  _entering;
  _value;
  _onChange;
  _onSuccess;
  _onCancel;
  _offset;
  _promptLength;
  _selection;

  constructor() {
    // Copied from `enter` to satisfy TS
    this._entering = true;
    this._value = '';
    this._selection = null;
    this._offset = -1;
    this._promptLength = 0;
    /* eslint-disable @typescript-eslint/no-empty-function */

    this._onChange = () => {};

    this._onSuccess = () => {};

    this._onCancel = () => {};
    /* eslint-enable */
  }

  _onResize = () => {
    this._onChange();
  };

  enter(onChange, onSuccess, onCancel) {
    this._entering = true;
    this._value = '';
    this._onSuccess = onSuccess;
    this._onCancel = onCancel;
    this._selection = null;
    this._offset = -1;
    this._promptLength = 0;

    this._onChange = () =>
      onChange(this._value, {
        max: 10,
        offset: this._offset
      });

    this._onChange();

    process.stdout.on('resize', this._onResize);
  }

  setPromptLength(length) {
    this._promptLength = length;
  }

  setPromptSelection(selected) {
    this._selection = selected;
  }

  put(key) {
    switch (key) {
      case _constants.KEYS.ENTER:
        this._entering = false;

        this._onSuccess(this._selection || this._value);

        this.abort();
        break;

      case _constants.KEYS.ESCAPE:
        this._entering = false;

        this._onCancel(this._value);

        this.abort();
        break;

      case _constants.KEYS.ARROW_DOWN:
        this._offset = Math.min(this._offset + 1, this._promptLength - 1);

        this._onChange();

        break;

      case _constants.KEYS.ARROW_UP:
        this._offset = Math.max(this._offset - 1, -1);

        this._onChange();

        break;

      case _constants.KEYS.ARROW_LEFT:
      case _constants.KEYS.ARROW_RIGHT:
        break;

      case _constants.KEYS.CONTROL_U:
        this._value = '';
        this._offset = -1;
        this._selection = null;

        this._onChange();

        break;

      default:
        this._value =
          key === _constants.KEYS.BACKSPACE
            ? this._value.slice(0, -1)
            : this._value + key;
        this._offset = -1;
        this._selection = null;

        this._onChange();

        break;
    }
  }

  abort() {
    this._entering = false;
    this._value = '';
    process.stdout.removeListener('resize', this._onResize);
  }

  isEntering() {
    return this._entering;
  }
}

exports.default = Prompt;