"use strict";

var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

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

var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

var _react = _interopRequireWildcard(require("react"));

var _classnames = _interopRequireDefault(require("classnames"));

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

// Copyright 1999-2020. Plesk International GmbH. All rights reserved.
const scrollToBottom = el => {
  el.scrollTop = el.scrollHeight;
};

/**
 * `ConsoleOutput` component is used for showing dynamically updating data from console output.
 * @since 0.0.35
 */
class ConsoleOutput extends _react.PureComponent {
  constructor(...args) {
    super(...args);
    (0, _defineProperty2.default)(this, "rootRef", /*#__PURE__*/(0, _react.createRef)());
    (0, _defineProperty2.default)(this, "prevScrollTop", 0);
    (0, _defineProperty2.default)(this, "autoscrollCancelled", false);
    (0, _defineProperty2.default)(this, "handleScroll", () => {
      const el = this.rootRef.current;

      if (!el) {
        return;
      }

      if (el.scrollTop < this.prevScrollTop) {
        this.autoscrollCancelled = true;
      } else if (el.clientHeight + el.scrollTop >= el.scrollHeight) {
        this.autoscrollCancelled = false;
      }
    });
  }

  componentDidMount() {
    const {
      autoscroll
    } = this.props;
    const el = this.rootRef.current;

    if (autoscroll && el) {
      scrollToBottom(el);
    }
  }

  componentDidUpdate() {
    const {
      autoscroll
    } = this.props;
    const el = this.rootRef.current;

    if (autoscroll && el) {
      this.prevScrollTop = el.scrollTop;

      if (!this.autoscrollCancelled) {
        scrollToBottom(el);
      }
    }
  }

  render() {
    const {
      baseClassName,
      className,
      wide,
      cursor,
      children,
      autoscroll,
      ...props
    } = this.props;
    const onScroll = autoscroll ? this.handleScroll : undefined;
    return /*#__PURE__*/_react.default.createElement("pre", (0, _extends2.default)({
      className: (0, _classnames.default)(baseClassName, {
        ["".concat(baseClassName, "--wide")]: wide
      }, className),
      ref: this.rootRef,
      onScroll: onScroll
    }, props), children, cursor ? /*#__PURE__*/_react.default.createElement("span", {
      className: "".concat(baseClassName, "__cursor")
    }) : null);
  }

}

(0, _defineProperty2.default)(ConsoleOutput, "defaultProps", {
  baseClassName: "".concat(_constants.CLS_PREFIX, "console-output"),
  wide: false,
  cursor: false,
  autoscroll: true
});
var _default = ConsoleOutput;
exports.default = _default;