import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
import { _ as _define_property } from "@swc/helpers/_/_define_property";
import { _ as _object_spread } from "@swc/helpers/_/_object_spread";
import { _ as _object_spread_props } from "@swc/helpers/_/_object_spread_props";
import { _ as _object_without_properties } from "@swc/helpers/_/_object_without_properties";
import { _ as _sliced_to_array } from "@swc/helpers/_/_sliced_to_array";
import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
import React, { useEffect, useRef, useState, createContext, useMemo } from "react";
import Taro, { nextTick, createSelectorQuery } from "@tarojs/taro";
import { ScrollView, View, Text } from "@tarojs/components";
import classNames from "classnames";
import { ComponentDefaults } from "../../utils/typings";
import { harmony } from "../../utils/taro/platform";
import { useUuid } from "../../hooks/use-uuid";
import raf from "../../utils/raf";
import { usePropsValue } from "../../hooks";
export var elevatorContext = /*#__PURE__*/ createContext({});
var defaultProps = _object_spread_props(_object_spread({}, ComponentDefaults), {
    mode: 'horizontal',
    height: '200px',
    floorKey: 'title',
    list: [],
    sticky: false,
    spaceHeight: 18,
    showKeys: true,
    defaultValue: undefined,
    value: undefined
});
export var Elevator = function(props) {
    var _ref = _object_spread({}, defaultProps, props), value = _ref.value, defaultValue = _ref.defaultValue, mode = _ref.mode, height = _ref.height, floorKey = _ref.floorKey, list = _ref.list, sticky = _ref.sticky, spaceHeight = _ref.spaceHeight, showKeys = _ref.showKeys, className = _ref.className, style = _ref.style, onItemClick = _ref.onItemClick, onIndexClick = _ref.onIndexClick, children = _ref.children, rest = _object_without_properties(_ref, [
        "value",
        "defaultValue",
        "mode",
        "height",
        "floorKey",
        "list",
        "sticky",
        "spaceHeight",
        "showKeys",
        "className",
        "style",
        "onItemClick",
        "onIndexClick",
        "children"
    ]);
    var uuid = useUuid();
    var classPrefix = 'nut-elevator';
    var initData = {
        anchorIndex: 0,
        listHeight: [],
        scrollY: 0
    };
    var touchState = useRef({
        y1: 0,
        y2: 0
    });
    var _usePropsValue = _sliced_to_array(usePropsValue({
        value: value,
        defaultValue: defaultValue || {}
    }), 2), currentData = _usePropsValue[0], setCurrentData = _usePropsValue[1];
    var _useState = _sliced_to_array(useState(0), 2), codeIndex = _useState[0], setCodeIndex = _useState[1];
    var _useState1 = _sliced_to_array(useState(false), 2), scrollStart = _useState1[0], setScrollStart = _useState1[1];
    var state = useRef(initData);
    var scrolling = useRef(false);
    var _useState2 = _sliced_to_array(useState(0), 2), scrollTop = _useState2[0], setScrollTop = _useState2[1];
    var _useState3 = _sliced_to_array(useState(0), 2), scrollY = _useState3[0], setScrollY = _useState3[1];
    var resetScrollState = function() {
        setScrollStart(false);
    };
    var getData = function(el) {
        if (!el.dataset.index) {
            return '0';
        }
        return el.dataset.index;
    };
    var calculateHeight = function() {
        state.current.listHeight = [
            0
        ];
        var query = createSelectorQuery();
        query.selectAll("#".concat(classPrefix, "-").concat(uuid, " .").concat(classPrefix, "-list-item")).boundingClientRect().exec(function() {
            var rect = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : [];
            if (rect[0] && rect[0].length) {
                // rect[0] = rect[0].reverse()
                state.current.listHeight = rect[0].reduce(function(acc, item, index) {
                    // 当前项的高度等于前面所有项的高度之和
                    var height = acc[index] + item.height;
                    acc.push(height);
                    return acc;
                }, [
                    0
                ]);
            }
        });
    };
    var scrollTo = function(index) {
        return _async_to_generator(function() {
            var cacheIndex, scrollTop;
            return _ts_generator(this, function(_state) {
                switch(_state.label){
                    case 0:
                        if (!index && index !== 0) {
                            return [
                                2
                            ];
                        }
                        if (!!state.current.listHeight.length) return [
                            3,
                            2
                        ];
                        return [
                            4,
                            calculateHeight()
                        ];
                    case 1:
                        _state.sent();
                        _state.label = 2;
                    case 2:
                        cacheIndex = index;
                        if (index < 0) {
                            cacheIndex = 0;
                        }
                        if (index > state.current.listHeight.length - 2) {
                            cacheIndex = Math.max(0, state.current.listHeight.length - 2);
                        }
                        setCodeIndex(cacheIndex);
                        scrollTop = state.current.listHeight[cacheIndex];
                        setScrollTop(scrollTop);
                        if (mode === 'vertical' && sticky) {
                            setScrollY(Math.floor(scrollTop) > 0 ? 1 : 0);
                        }
                        return [
                            2
                        ];
                }
            });
        })();
    };
    var touchMove = function(e) {
        var firstTouch = e.touches[0];
        touchState.current.y2 = firstTouch.pageY;
        var delta = (touchState.current.y2 - touchState.current.y1) / spaceHeight || 0;
        var cacheIndex = state.current.anchorIndex + Math.round(delta);
        setCodeIndex(cacheIndex);
        scrollTo(cacheIndex);
    };
    var touchEnd = function() {
        resetScrollState();
    };
    var touchStart = function(e) {
        var index = Number(getData(e.target));
        var firstTouch = e.touches[0];
        scrolling.current = true;
        touchState.current.y1 = firstTouch.pageY;
        state.current.anchorIndex = +index;
        setScrollStart(true);
        setCodeIndex(index);
        scrollTo(index);
    };
    var handleClickItem = function(key, item) {
        onItemClick && onItemClick(key, item);
        setCurrentData(item);
    };
    var handleClickIndex = function(key) {
        onIndexClick && onIndexClick(key);
    };
    var listViewScroll = function(e) {
        raf(function() {
            var listHeight = state.current.listHeight;
            if (!listHeight.length) {
                calculateHeight();
            }
            var target = e.target;
            var scrollTop = target.scrollTop;
            state.current.scrollY = Math.floor(scrollTop);
            Taro.getEnv() === 'WEB' && setScrollTop(scrollTop);
            if (mode === 'vertical' && sticky) {
                setScrollY(Math.floor(scrollTop) > 0 ? 1 : 0);
            }
            if (scrolling.current) return;
            var index = listHeight.findIndex(function(height, i) {
                return state.current.scrollY >= height && state.current.scrollY < (listHeight[i + 1] || Infinity);
            });
            if (index !== -1 && index !== codeIndex) {
                setCodeIndex(index);
            }
        });
    };
    var getWrapStyle = useMemo(function() {
        var calcHeight = Number.isNaN(+height) ? height : "".concat(height, "px");
        return {
            height: harmony() ? Number(height) : calcHeight
        };
    }, [
        height
    ]);
    useEffect(function() {
        nextTick(function() {
            calculateHeight();
        });
    }, []);
    var _obj;
    return /*#__PURE__*/ React.createElement("div", _object_spread({
        className: "".concat(classPrefix, " ").concat(className, " ").concat(classPrefix, "-").concat(mode, " "),
        id: "".concat(classPrefix, "-").concat(uuid),
        style: style
    }, rest), /*#__PURE__*/ React.createElement(View, {
        className: "".concat(classPrefix, "-list"),
        style: getWrapStyle
    }, /*#__PURE__*/ React.createElement(ScrollView, {
        scrollTop: scrollTop,
        scrollY: true,
        enhanced: true,
        scrollWithAnimation: false,
        scrollAnchoring: true,
        className: "".concat(classPrefix, "-list-inner"),
        onScroll: listViewScroll,
        onTouchStart: function(e) {
            scrolling.current = false;
        }
    }, list.map(function(item, idx) {
        return /*#__PURE__*/ React.createElement(View, {
            className: "".concat(classPrefix, "-list-item nut-elevator-item-").concat(idx),
            key: idx
        }, /*#__PURE__*/ React.createElement(View, {
            className: "".concat(classPrefix, "-list-item-code")
        }, item[floorKey]), /*#__PURE__*/ React.createElement(View, {
            className: "".concat(classPrefix, "-list-item-sublist")
        }, item.list.map(function(subitem) {
            var _obj;
            return /*#__PURE__*/ React.createElement(View, {
                className: classNames((_obj = {}, _define_property(_obj, "".concat(classPrefix, "-list-item-name"), true), _define_property(_obj, "".concat(classPrefix, "-list-item-name-highcolor"), currentData.id === subitem.id), _obj)),
                key: subitem.id,
                onClick: function() {
                    return handleClickItem(item[floorKey], subitem);
                }
            }, children ? /*#__PURE__*/ React.createElement(React.Fragment, null, /*#__PURE__*/ React.createElement(elevatorContext.Provider, {
                value: subitem
            }, children)) : subitem.name);
        })));
    }))), showKeys ? /*#__PURE__*/ React.createElement(React.Fragment, null, list.length && scrollStart ? /*#__PURE__*/ React.createElement(View, {
        className: classNames((_obj = {}, _define_property(_obj, "".concat(classPrefix, "-code-current"), true), _define_property(_obj, "".concat(classPrefix, "-code-current-current"), true), _obj))
    }, list[codeIndex] && String(list[codeIndex][floorKey])) : null, /*#__PURE__*/ React.createElement(View, {
        className: "".concat(classPrefix, "-bars")
    }, /*#__PURE__*/ React.createElement(View, {
        className: "".concat(classPrefix, "-bars-inner")
    }, list.map(function(item, index) {
        var _obj;
        return /*#__PURE__*/ React.createElement(View, {
            className: classNames((_obj = {}, _define_property(_obj, "".concat(classPrefix, "-bars-inner-item"), true), _define_property(_obj, "".concat(classPrefix, "-bars-inner-item-active"), item[floorKey] === list[codeIndex][floorKey]), _obj)),
            "data-index": index,
            key: index,
            onClick: function() {
                return handleClickIndex(item[floorKey]);
            },
            onTouchStart: function(event) {
                return touchStart(event);
            },
            onTouchMove: function(event) {
                return touchMove(event);
            },
            onTouchEnd: touchEnd,
            style: {
                touchAction: 'pan-y'
            }
        }, String(item[floorKey]));
    })))) : null, mode === 'vertical' && sticky && scrollY > 0 ? /*#__PURE__*/ React.createElement(View, {
        className: "".concat(classPrefix, "-list-fixed")
    }, /*#__PURE__*/ React.createElement(Text, {
        className: "".concat(classPrefix, "-list-fixed-title")
    }, list[codeIndex] && String(list[codeIndex][floorKey]))) : null);
};
Elevator.displayName = 'NutElevator';
Elevator.Context = elevatorContext;
