import _extends from 'babel-runtime/helpers/extends';
import _toConsumableArray from 'babel-runtime/helpers/toConsumableArray';
import PropTypes from '../../_util/vue-types';
import BaseMixin from '../../_util/BaseMixin';
import { connect } from '../../_util/store';
import TableRow from './TableRow';
import { remove } from './utils';
import { initDefaultProps, getOptionProps } from '../../_util/props-util';

export var ExpandableTableProps = function ExpandableTableProps() {
  return {
    expandIconAsCell: PropTypes.bool,
    expandRowByClick: PropTypes.bool,
    expandedRowKeys: PropTypes.array,
    expandedRowClassName: PropTypes.func,
    defaultExpandAllRows: PropTypes.bool,
    defaultExpandedRowKeys: PropTypes.array,
    expandIconColumnIndex: PropTypes.number,
    expandedRowRender: PropTypes.func,
    childrenColumnName: PropTypes.string,
    indentSize: PropTypes.number,
    // onExpand: PropTypes.func,
    // onExpandedRowsChange: PropTypes.func,
    columnManager: PropTypes.object.isRequired,
    store: PropTypes.object.isRequired,
    prefixCls: PropTypes.string.isRequired,
    data: PropTypes.array,
    getRowKey: PropTypes.func
  };
};

var ExpandableTable = {
  name: 'ExpandableTable',
  mixins: [BaseMixin],
  props: initDefaultProps(ExpandableTableProps(), {
    expandIconAsCell: false,
    expandedRowClassName: function expandedRowClassName() {
      return '';
    },
    expandIconColumnIndex: 0,
    defaultExpandAllRows: false,
    defaultExpandedRowKeys: [],
    childrenColumnName: 'children',
    indentSize: 15
  }),

  data: function data() {
    var data = this.data,
        childrenColumnName = this.childrenColumnName,
        defaultExpandAllRows = this.defaultExpandAllRows,
        expandedRowKeys = this.expandedRowKeys,
        defaultExpandedRowKeys = this.defaultExpandedRowKeys,
        getRowKey = this.getRowKey;


    var finnalExpandedRowKeys = [];
    var rows = [].concat(_toConsumableArray(data));

    if (defaultExpandAllRows) {
      for (var i = 0; i < rows.length; i++) {
        var row = rows[i];
        finnalExpandedRowKeys.push(getRowKey(row, i));
        rows = rows.concat(row[childrenColumnName] || []);
      }
    } else {
      finnalExpandedRowKeys = expandedRowKeys || defaultExpandedRowKeys;
    }

    // this.columnManager = props.columnManager
    // this.store = props.store

    this.store.setState({
      expandedRowsHeight: {},
      expandedRowKeys: finnalExpandedRowKeys
    });
    return {};
  },

  watch: {
    expandedRowKeys: function expandedRowKeys(val) {
      var _this = this;

      this.$nextTick(function () {
        _this.store.setState({
          expandedRowKeys: val
        });
      });
    }
  },
  methods: {
    handleExpandChange: function handleExpandChange(expanded, record, event, rowKey) {
      var destroy = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;

      if (event) {
        event.preventDefault();
        event.stopPropagation();
      }

      var _store$getState = this.store.getState(),
          expandedRowKeys = _store$getState.expandedRowKeys;

      if (expanded) {
        // row was expaned
        expandedRowKeys = [].concat(_toConsumableArray(expandedRowKeys), [rowKey]);
      } else {
        // row was collapse
        var expandedRowIndex = expandedRowKeys.indexOf(rowKey);
        if (expandedRowIndex !== -1) {
          expandedRowKeys = remove(expandedRowKeys, rowKey);
        }
      }

      if (!this.expandedRowKeys) {
        this.store.setState({ expandedRowKeys: expandedRowKeys });
      }
      this.__emit('expandedRowsChange', expandedRowKeys);
      if (!destroy) {
        this.__emit('expand', expanded, record);
      }
    },
    renderExpandIndentCell: function renderExpandIndentCell(rows, fixed) {
      var prefixCls = this.prefixCls,
          expandIconAsCell = this.expandIconAsCell;

      if (!expandIconAsCell || fixed === 'right' || !rows.length) {
        return;
      }

      var iconColumn = {
        key: 'rc-table-expand-icon-cell',
        className: prefixCls + '-expand-icon-th',
        title: '',
        rowSpan: rows.length
      };

      rows[0].unshift(_extends({}, iconColumn, { column: iconColumn }));
    },
    renderExpandedRow: function renderExpandedRow(record, index, expandedRowRender, className, ancestorKeys, indent, fixed) {
      var _this2 = this;

      var h = this.$createElement;
      var prefixCls = this.prefixCls,
          expandIconAsCell = this.expandIconAsCell,
          indentSize = this.indentSize;

      var parentKey = ancestorKeys[ancestorKeys.length - 1];
      var rowKey = parentKey + '-extra-row';
      var components = {
        body: {
          row: 'tr',
          cell: 'td'
        }
      };
      var colCount = void 0;
      if (fixed === 'left') {
        colCount = this.columnManager.leftLeafColumns().length;
      } else if (fixed === 'right') {
        colCount = this.columnManager.rightLeafColumns().length;
      } else {
        colCount = this.columnManager.leafColumns().length;
      }
      var columns = [{
        key: 'extra-row',
        customRender: function customRender() {
          var _store$getState2 = _this2.store.getState(),
              expandedRowKeys = _store$getState2.expandedRowKeys;

          var expanded = !!~expandedRowKeys.indexOf(parentKey);
          return {
            attrs: {
              colSpan: colCount
            },
            children: fixed !== 'right' ? expandedRowRender(record, index, indent, expanded) : '&nbsp;'
          };
        }
      }];
      if (expandIconAsCell && fixed !== 'right') {
        columns.unshift({
          key: 'expand-icon-placeholder',
          customRender: function customRender() {
            return null;
          }
        });
      }

      return h(TableRow, {
        key: rowKey,
        attrs: { columns: columns,

          rowKey: rowKey,
          ancestorKeys: ancestorKeys,
          prefixCls: prefixCls + '-expanded-row',
          indentSize: indentSize,
          indent: indent,
          fixed: fixed,
          components: components,
          expandedRow: true,
          hasExpandIcon: function hasExpandIcon() {}
        },
        'class': className });
    },
    renderRows: function renderRows(_renderRows, rows, record, index, indent, fixed, parentKey, ancestorKeys) {
      var expandedRowClassName = this.expandedRowClassName,
          expandedRowRender = this.expandedRowRender,
          childrenColumnName = this.childrenColumnName;

      var childrenData = record[childrenColumnName];
      var nextAncestorKeys = [].concat(_toConsumableArray(ancestorKeys), [parentKey]);
      var nextIndent = indent + 1;

      if (expandedRowRender) {
        rows.push(this.renderExpandedRow(record, index, expandedRowRender, expandedRowClassName(record, index, indent), nextAncestorKeys, nextIndent, fixed));
      }

      if (childrenData) {
        _renderRows(childrenData, nextIndent, rows, nextAncestorKeys);
      }
    }
  },

  render: function render() {
    var data = this.data,
        childrenColumnName = this.childrenColumnName,
        $scopedSlots = this.$scopedSlots,
        $listeners = this.$listeners;

    var props = getOptionProps(this);
    var needIndentSpaced = data.some(function (record) {
      return record[childrenColumnName];
    });

    return $scopedSlots['default'] && $scopedSlots['default']({
      props: props,
      on: $listeners,
      needIndentSpaced: needIndentSpaced,
      renderRows: this.renderRows,
      handleExpandChange: this.handleExpandChange,
      renderExpandIndentCell: this.renderExpandIndentCell
    });
  }
};

export default connect()(ExpandableTable);