"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _react = _interopRequireWildcard(require("react"));
var _utils = require("@teamix/utils");
require("./index.scss");
var _icon = _interopRequireDefault(require("@teamix/icon"));
var _lodash = _interopRequireDefault(require("lodash.debounce"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
var cls = (0, _utils.usePrefixCls)('teamix-pro-load-more');
var LoadMore = function LoadMore(props) {
  var children = props.children,
    onChangeLoadState = props.onChangeLoadState,
    onLoadMore = props.onLoadMore,
    scrollHeight = props.scrollHeight,
    onScrollBottom = props.onScrollBottom,
    loadStateProp = props.loadState,
    scrollPositionProp = props.scrollPosition;
  var scrollDom = (0, _react.useRef)(null);
  // 加载状态
  var _useState = (0, _react.useState)('loadMore'),
    _useState2 = _slicedToArray(_useState, 2),
    loadState = _useState2[0],
    setLoadState = _useState2[1];
  (0, _react.useEffect)(function () {
    var _scrollDom$current;
    scrollDom === null || scrollDom === void 0 ? void 0 : (_scrollDom$current = scrollDom.current) === null || _scrollDom$current === void 0 ? void 0 : _scrollDom$current.addEventListener('scroll', (0, _lodash.default)(function (e) {
      var _e$target, _e$target2, _e$target3;
      var scrollTop = e === null || e === void 0 ? void 0 : (_e$target = e.target) === null || _e$target === void 0 ? void 0 : _e$target.scrollTop;
      var clientHeight = e === null || e === void 0 ? void 0 : (_e$target2 = e.target) === null || _e$target2 === void 0 ? void 0 : _e$target2.clientHeight;
      var scrollHeight = e === null || e === void 0 ? void 0 : (_e$target3 = e.target) === null || _e$target3 === void 0 ? void 0 : _e$target3.scrollHeight;
      if (scrollTop + clientHeight + 5 >= scrollHeight) {
        onScrollBottom === null || onScrollBottom === void 0 ? void 0 : onScrollBottom();
      }
    }, 100));
  }, []);
  (0, _react.useEffect)(function () {
    setLoadState(loadStateProp);
  }, [loadStateProp]);
  // 更改加载状态
  var onLoadState = function onLoadState(state) {
    setLoadState(state);
    if (state === 'loading') {
      onLoadMore === null || onLoadMore === void 0 ? void 0 : onLoadMore();
    }
    onChangeLoadState === null || onChangeLoadState === void 0 ? void 0 : onChangeLoadState(state);
  };
  // 渲染加载更多和正在加载区域
  var renderLoadMore = function renderLoadMore() {
    if (loadState === 'loadMore') {
      return /*#__PURE__*/_react.default.createElement("div", {
        className: cls('bottom-text'),
        onClick: function onClick() {
          return onLoadState('loading');
        }
      }, /*#__PURE__*/_react.default.createElement(_icon.default, {
        type: "down-line",
        size: "small",
        className: cls('bottom-text-icon')
      }), "\u52A0\u8F7D\u66F4\u591A");
    }
    if (loadState === 'loading') {
      return /*#__PURE__*/_react.default.createElement("div", {
        className: cls('bottom-text')
      }, /*#__PURE__*/_react.default.createElement(_icon.default, {
        type: "loading-line",
        size: "small",
        className: cls('bottom-text-icon')
      }), "\u52A0\u8F7D\u4E2D");
    }
    if (loadState === 'noMore') {
      return /*#__PURE__*/_react.default.createElement("div", {
        className: cls('bottom-text')
      }, "\u6CA1\u6709\u66F4\u591A\u4E86");
    }
    return /*#__PURE__*/_react.default.createElement(_react.default.Fragment, null);
  };
  return /*#__PURE__*/_react.default.createElement("div", {
    className: cls(),
    style: {
      height: scrollHeight !== null && scrollHeight !== void 0 ? scrollHeight : 'auto'
    },
    ref: scrollDom
  }, children, renderLoadMore());
};
var _default = LoadMore;
exports.default = _default;