import _objectSpread from "@babel/runtime/helpers/esm/objectSpread2";
import _extends from "@babel/runtime/helpers/esm/extends";
import { createVNode as _createVNode, resolveDirective as _resolveDirective } from "vue";
import { computed, defineComponent, ref, toRef, toRefs, watchEffect } from 'vue-demi';
import { baseSelectPropsWithoutPrivate } from '../vc-select/BaseSelect';
import omit from '../_util/omit';
import { objectType } from '../_util/type';
import PropTypes from '../_util/vue-types';
import { initDefaultProps } from '../_util/props-util';
import useId from '../vc-select/hooks/useId';
import useMergedState from '../_util/hooks/useMergedState';
import { fillFieldNames, toPathKey, toPathKeys, SHOW_PARENT, SHOW_CHILD } from './utils/commonUtil';
import useEntities from './hooks/useEntities';
import useSearchConfig from './hooks/useSearchConfig';
import useSearchOptions from './hooks/useSearchOptions';
import useMissingValues from './hooks/useMissingValues';
import { formatStrategyValues, toPathOptions } from './utils/treeUtil';
import { conductCheck } from '../vc-tree/utils/conductUtil';
import useDisplayValues from './hooks/useDisplayValues';
import { useProvideCascader } from './context';
import OptionList from './OptionList';
import { BaseSelect } from '../vc-select';
import devWarning from '../vc-util/devWarning';
import useMaxLevel from '../vc-tree/useMaxLevel';
export { SHOW_PARENT, SHOW_CHILD };
function baseCascaderProps() {
  return _extends(_extends({}, omit(baseSelectPropsWithoutPrivate(), ['tokenSeparators', 'mode', 'showSearch'])), {
    // MISC
    id: String,
    prefixCls: String,
    fieldNames: objectType(),
    children: Array,
    // Value
    value: {
      type: [String, Number, Array]
    },
    defaultValue: {
      type: [String, Number, Array]
    },
    changeOnSelect: {
      type: Boolean,
      default: undefined
    },
    displayRender: Function,
    checkable: {
      type: Boolean,
      default: undefined
    },
    showCheckedStrategy: {
      type: String,
      default: SHOW_PARENT
    },
    // Search
    showSearch: {
      type: [Boolean, Object],
      default: undefined
    },
    searchValue: String,
    onSearch: Function,
    // Trigger
    expandTrigger: String,
    // Options
    options: Array,
    /** @private Internal usage. Do not use in your production. */
    dropdownPrefixCls: String,
    loadData: Function,
    // Open
    /** @deprecated Use `open` instead */
    popupVisible: {
      type: Boolean,
      default: undefined
    },
    /** @deprecated Use `dropdownClassName` instead */
    popupClassName: String,
    dropdownClassName: String,
    dropdownMenuColumnStyle: {
      type: Object,
      default: undefined
    },
    /** @deprecated Use `dropdownStyle` instead */
    popupStyle: {
      type: Object,
      default: undefined
    },
    dropdownStyle: {
      type: Object,
      default: undefined
    },
    /** @deprecated Use `placement` instead */
    popupPlacement: String,
    placement: String,
    /** @deprecated Use `onDropdownVisibleChange` instead */
    onPopupVisibleChange: Function,
    onDropdownVisibleChange: Function,
    // Icon
    expandIcon: PropTypes.any,
    loadingIcon: PropTypes.any
  });
}
export function singleCascaderProps() {
  return _extends(_extends({}, baseCascaderProps()), {
    checkable: Boolean,
    onChange: Function
  });
}
export function multipleCascaderProps() {
  return _extends(_extends({}, baseCascaderProps()), {
    checkable: Boolean,
    onChange: Function
  });
}
export function internalCascaderProps() {
  return _extends(_extends({}, baseCascaderProps()), {
    onChange: Function,
    customSlots: Object
  });
}
function isMultipleValue(value) {
  return Array.isArray(value) && Array.isArray(value[0]);
}
function toRawValues(value) {
  if (!value) {
    return [];
  }
  if (isMultipleValue(value)) {
    return value;
  }
  return (value.length === 0 ? [] : [value]).map(val => Array.isArray(val) ? val : [val]);
}
export default defineComponent({
  compatConfig: {
    MODE: 3
  },
  name: 'Cascader',
  inheritAttrs: false,
  props: initDefaultProps(internalCascaderProps(), {}),
  setup(props, _ref) {
    let {
      attrs,
      expose,
      slots
    } = _ref;
    const mergedId = useId(toRef(props, 'id'));
    const multiple = computed(() => !!props.checkable);
    // =========================== Values ===========================
    const [rawValues, setRawValues] = useMergedState(props.defaultValue, {
      value: computed(() => props.value),
      postState: toRawValues
    });
    // ========================= FieldNames =========================
    const mergedFieldNames = computed(() => fillFieldNames(props.fieldNames));
    // =========================== Option ===========================
    const mergedOptions = computed(() => props.options || []);
    // Only used in multiple mode, this fn will not call in single mode
    const pathKeyEntities = useEntities(mergedOptions, mergedFieldNames);
    /** Convert path key back to value format */
    const getValueByKeyPath = pathKeys => {
      const keyPathEntities = pathKeyEntities.value;
      return pathKeys.map(pathKey => {
        const {
          nodes
        } = keyPathEntities[pathKey];
        return nodes.map(node => node[mergedFieldNames.value.value]);
      });
    };
    // =========================== Search ===========================
    const [mergedSearchValue, setSearchValue] = useMergedState('', {
      value: computed(() => props.searchValue),
      postState: search => search || ''
    });
    const onInternalSearch = (searchText, info) => {
      setSearchValue(searchText);
      if (info.source !== 'blur' && props.onSearch) {
        props.onSearch(searchText);
      }
    };
    const {
      showSearch: mergedShowSearch,
      searchConfig: mergedSearchConfig
    } = useSearchConfig(toRef(props, 'showSearch'));
    const searchOptions = useSearchOptions(mergedSearchValue, mergedOptions, mergedFieldNames, computed(() => props.dropdownPrefixCls || props.prefixCls), mergedSearchConfig, toRef(props, 'changeOnSelect'));
    // =========================== Values ===========================
    const missingValuesInfo = useMissingValues(mergedOptions, mergedFieldNames, rawValues);
    // Fill `rawValues` with checked conduction values
    const [checkedValues, halfCheckedValues, missingCheckedValues] = [ref([]), ref([]), ref([])];
    const {
      maxLevel,
      levelEntities
    } = useMaxLevel(pathKeyEntities);
    watchEffect(() => {
      const [existValues, missingValues] = missingValuesInfo.value;
      if (!multiple.value || !rawValues.value.length) {
        [checkedValues.value, halfCheckedValues.value, missingCheckedValues.value] = [existValues, [], missingValues];
        return;
      }
      const keyPathValues = toPathKeys(existValues);
      const keyPathEntities = pathKeyEntities.value;
      const {
        checkedKeys,
        halfCheckedKeys
      } = conductCheck(keyPathValues, true, keyPathEntities, maxLevel.value, levelEntities.value);
      // Convert key back to value cells
      [checkedValues.value, halfCheckedValues.value, missingCheckedValues.value] = [getValueByKeyPath(checkedKeys), getValueByKeyPath(halfCheckedKeys), missingValues];
    });
    const deDuplicatedValues = computed(() => {
      const checkedKeys = toPathKeys(checkedValues.value);
      const deduplicateKeys = formatStrategyValues(checkedKeys, pathKeyEntities.value, props.showCheckedStrategy);
      return [...missingCheckedValues.value, ...getValueByKeyPath(deduplicateKeys)];
    });
    const displayValues = useDisplayValues(deDuplicatedValues, mergedOptions, mergedFieldNames, multiple, toRef(props, 'displayRender'));
    // =========================== Change ===========================
    const triggerChange = nextValues => {
      setRawValues(nextValues);
      // Save perf if no need trigger event
      if (props.onChange) {
        const nextRawValues = toRawValues(nextValues);
        const valueOptions = nextRawValues.map(valueCells => toPathOptions(valueCells, mergedOptions.value, mergedFieldNames.value).map(valueOpt => valueOpt.option));
        const triggerValues = multiple.value ? nextRawValues : nextRawValues[0];
        const triggerOptions = multiple.value ? valueOptions : valueOptions[0];
        props.onChange(triggerValues, triggerOptions);
      }
    };
    // =========================== Select ===========================
    const onInternalSelect = valuePath => {
      setSearchValue('');
      if (!multiple.value) {
        triggerChange(valuePath);
      } else {
        // Prepare conduct required info
        const pathKey = toPathKey(valuePath);
        const checkedPathKeys = toPathKeys(checkedValues.value);
        const halfCheckedPathKeys = toPathKeys(halfCheckedValues.value);
        const existInChecked = checkedPathKeys.includes(pathKey);
        const existInMissing = missingCheckedValues.value.some(valueCells => toPathKey(valueCells) === pathKey);
        // Do update
        let nextCheckedValues = checkedValues.value;
        let nextMissingValues = missingCheckedValues.value;
        if (existInMissing && !existInChecked) {
          // Missing value only do filter
          nextMissingValues = missingCheckedValues.value.filter(valueCells => toPathKey(valueCells) !== pathKey);
        } else {
          // Update checked key first
          const nextRawCheckedKeys = existInChecked ? checkedPathKeys.filter(key => key !== pathKey) : [...checkedPathKeys, pathKey];
          // Conduction by selected or not
          let checkedKeys;
          if (existInChecked) {
            ({
              checkedKeys
            } = conductCheck(nextRawCheckedKeys, {
              checked: false,
              halfCheckedKeys: halfCheckedPathKeys
            }, pathKeyEntities.value, maxLevel.value, levelEntities.value));
          } else {
            ({
              checkedKeys
            } = conductCheck(nextRawCheckedKeys, true, pathKeyEntities.value, maxLevel.value, levelEntities.value));
          }
          // Roll up to parent level keys
          const deDuplicatedKeys = formatStrategyValues(checkedKeys, pathKeyEntities.value, props.showCheckedStrategy);
          nextCheckedValues = getValueByKeyPath(deDuplicatedKeys);
        }
        triggerChange([...nextMissingValues, ...nextCheckedValues]);
      }
    };
    // Display Value change logic
    const onDisplayValuesChange = (_, info) => {
      if (info.type === 'clear') {
        triggerChange([]);
        return;
      }
      // Cascader do not support `add` type. Only support `remove`
      const {
        valueCells
      } = info.values[0];
      onInternalSelect(valueCells);
    };
    // ============================ Open ============================
    if (process.env.NODE_ENV !== 'production') {
      watchEffect(() => {
        devWarning(!props.onPopupVisibleChange, 'Cascader', '`popupVisibleChange` is deprecated. Please use `dropdownVisibleChange` instead.');
        devWarning(props.popupVisible === undefined, 'Cascader', '`popupVisible` is deprecated. Please use `open` instead.');
        devWarning(props.popupClassName === undefined, 'Cascader', '`popupClassName` is deprecated. Please use `dropdownClassName` instead.');
        devWarning(props.popupPlacement === undefined, 'Cascader', '`popupPlacement` is deprecated. Please use `placement` instead.');
        devWarning(props.popupStyle === undefined, 'Cascader', '`popupStyle` is deprecated. Please use `dropdownStyle` instead.');
      });
    }
    const mergedOpen = computed(() => props.open !== undefined ? props.open : props.popupVisible);
    const mergedDropdownClassName = computed(() => props.dropdownClassName || props.popupClassName);
    const mergedDropdownStyle = computed(() => props.dropdownStyle || props.popupStyle || {});
    const mergedPlacement = computed(() => props.placement || props.popupPlacement);
    const onInternalDropdownVisibleChange = nextVisible => {
      var _a, _b;
      (_a = props.onDropdownVisibleChange) === null || _a === void 0 ? void 0 : _a.call(props, nextVisible);
      (_b = props.onPopupVisibleChange) === null || _b === void 0 ? void 0 : _b.call(props, nextVisible);
    };
    const {
      changeOnSelect,
      checkable,
      dropdownPrefixCls,
      loadData,
      expandTrigger,
      expandIcon,
      loadingIcon,
      dropdownMenuColumnStyle,
      customSlots
    } = toRefs(props);
    useProvideCascader({
      options: mergedOptions,
      fieldNames: mergedFieldNames,
      values: checkedValues,
      halfValues: halfCheckedValues,
      changeOnSelect,
      onSelect: onInternalSelect,
      checkable,
      searchOptions,
      dropdownPrefixCls,
      loadData,
      expandTrigger,
      expandIcon,
      loadingIcon,
      dropdownMenuColumnStyle,
      customSlots
    });
    const selectRef = ref();
    expose({
      focus() {
        var _a;
        (_a = selectRef.value) === null || _a === void 0 ? void 0 : _a.focus();
      },
      blur() {
        var _a;
        (_a = selectRef.value) === null || _a === void 0 ? void 0 : _a.blur();
      },
      scrollTo(arg) {
        var _a;
        (_a = selectRef.value) === null || _a === void 0 ? void 0 : _a.scrollTo(arg);
      }
    });
    const pickProps = computed(() => {
      return omit(props, ['id', 'prefixCls', 'fieldNames',
      // Value
      'defaultValue', 'value', 'changeOnSelect', 'onChange', 'displayRender', 'checkable',
      // Search
      'searchValue', 'onSearch', 'showSearch',
      // Trigger
      'expandTrigger',
      // Options
      'options', 'dropdownPrefixCls', 'loadData',
      // Open
      'popupVisible', 'open', 'popupClassName', 'dropdownClassName', 'dropdownMenuColumnStyle', 'popupPlacement', 'placement', 'onDropdownVisibleChange', 'onPopupVisibleChange',
      // Icon
      'expandIcon', 'loadingIcon', 'customSlots', 'showCheckedStrategy',
      // Children
      'children']);
    });
    return () => {
      const emptyOptions = !(mergedSearchValue.value ? searchOptions.value : mergedOptions.value).length;
      const {
        dropdownMatchSelectWidth = false
      } = props;
      const dropdownStyle =
      // Search to match width
      mergedSearchValue.value && mergedSearchConfig.value.matchInputWidth ||
      // Empty keep the width
      emptyOptions ? {} : {
        minWidth: 'auto'
      };
      return _createVNode(BaseSelect, _objectSpread(_objectSpread(_objectSpread({}, pickProps.value), attrs), {}, {
        "ref": selectRef,
        "id": mergedId,
        "prefixCls": props.prefixCls,
        "dropdownMatchSelectWidth": dropdownMatchSelectWidth,
        "dropdownStyle": _extends(_extends({}, mergedDropdownStyle.value), dropdownStyle),
        "displayValues": displayValues.value,
        "onDisplayValuesChange": onDisplayValuesChange,
        "mode": multiple.value ? 'multiple' : undefined,
        "searchValue": mergedSearchValue.value,
        "onSearch": onInternalSearch,
        "showSearch": mergedShowSearch.value,
        "OptionList": OptionList,
        "emptyOptions": emptyOptions,
        "open": mergedOpen.value,
        "dropdownClassName": mergedDropdownClassName.value,
        "placement": mergedPlacement.value,
        "onDropdownVisibleChange": onInternalDropdownVisibleChange,
        "getRawInputElement": () => {
          var _a;
          return (_a = slots.default) === null || _a === void 0 ? void 0 : _a.call(slots);
        }
      }), slots);
    };
  }
});