import useUserStore from "../stores/useUserStore";
import {
    request,
    createRequest,
    uploadFile
} from "../utils/request";
import streamRequest, {
    chatRequest
} from "../utils/streamRequest.js";

export const CloneDeep = (props) => {
    if (typeof props !== 'object' || props === null) {
        return props
    }

    let result
    if (props) {
        result = []
    } else {
        result = {}
    }

    for (let key in props) {
        if (props.hasOwnProperty(key)) {
            result[key] = CloneDeep(props[key])
        }
    }

    return result
}


export const msg = (title, duration = 1500, mask = false, icon = 'none', image) => {
    if (Boolean(title) === false) {
        return;
    }
    uni.showToast({
        title,
        duration,
        mask,
        icon,
        image
    });
}

const prePage = () => {
    let pages = getCurrentPages();
    let prePage = pages[pages.length - 2];
    return prePage.$vm;
}




const navTo = function(url, needLogin) {
    if (needLogin && useUserStore().hasLogin) {
        uni.navigateTo({
            url: '/pages/login/login'
        });
        return
    }
    uni.navigateTo({
        url
    });
}

function getdeviceInfo() {
    const globalData = {
        statusBarHeight: 0, // 状态导航栏高度
        topHeight: 0, // 距离顶部高度
        navHeight: 0, // 总体高度
        windowHeight: 0, // 可使用窗口高度
        tabBarHight: 0, //底部导航栏高度
    };
    let systemInfo = uni.getSystemInfoSync()
    globalData.windowHeight = systemInfo.screenHeight
    // 底部导航栏
    globalData.tabBarHight = systemInfo.screenHeight - systemInfo.safeArea.bottom
    // 状态栏高度
    globalData.statusBarHeight = systemInfo.statusBarHeight
    // #ifdef MP-MP-WEIXIN
    let menuButtonInfo = uni.getMenuButtonBoundingClientRect()
    // 胶囊距离顶部高度
    globalData.topHeight = menuButtonInfo.top
    // 胶囊高度
    globalData.navHeight = menuButtonInfo.height​
    // #endif
    return {
        ...globalData
    }
}

function sleep(time) {
    return new Promise((resolve) => setTimeout(resolve, time))
}
const cloneDeep = (obj) => {
    // 1.1 判断是否是对象
    const isObject = (obj) => (typeof obj === 'object' || typeof obj === 'function') && obj !== 'null'

    if (!isObject(obj)) {
        throw new Error('参数不是对象')
    }
    // 1.3 如果参数为数组，则复制数组各元素，否则复制对象属性
    const newObject = Array.isArray(obj) ? [...obj] : {
        ...obj
    }
    // 1.4 迭代
    Object.keys(newObject).forEach((key) => {
        // 1.5 判断如果遍历到的属性值为对象，则继续递归cloneDeep
        if (isObject(newObject[key])) {
            newObject[key] = cloneDeep(newObject[key])
        }
    })
    return newObject
}

const CopyText = (text) => {
    let input = document.createElement('textarea');
    input.value = text;
    document.body.appendChild(input);
    input.select();
    let flag = document.execCommand('copy')
    if (flag) {
        message.success('成功复制到剪贴板')
    } else {
        message.success('复制失败')
    }
    document.body.removeChild(input)
}

// 柯里化 降低使用范围，提高适用性
function Exp(regExp) {
    return (str) => {
        return regExp.test(str)
    }
}

const checkingPhoneRegExp = Exp(/^1[3-9]{1}\d{9}/)
// 手机号校验 checkingPhoneRegExp(phone)

const checkingEmailRegExp = Exp(/^[a-z0-9_\.-]+@[a-z0-9_\.-]+[a-z0-9]{2,6}$/i)
// 邮箱校验 checkingEmailRegExp(email)


function throttle(fn, delay = 300) {
    let valid = true
    let savedArgs = null // 参数存储器 
    let savedContext = null // 上下文存储器

    return function(...args) {
        // 保存当前参数和上下文 
        savedArgs = args
        savedContext = this

        if (!valid) return false
        valid = false
        setTimeout(() => {
            fn.apply(savedContext, savedArgs)
            valid = true
            savedArgs = null // 清空存储 
            savedContext = null
        }, delay)
    }
}

function debounce(fun, delay) {
    return function(args) {
        let that = this
        let _args = args
        clearTimeout(fun.id)
        fun.id = setTimeout(function() {
            fun.call(that, _args)
        }, delay)
    }
}


function toRad(degree) {
    return degree * Math.PI / 180;
}

function haversine(lat1, lon1, lat2, lon2) {
    const R = 6371; // 地球半径，单位为公里
    const a1 = toRad(lat1);
    const a2 = toRad(lat2);
    const b1 = toRad(lat2 - lat1);
    const b2 = toRad(lon2 - lon1);

    const a = Math.sin(b1 / 2) * Math.sin(b1 / 2) +
        Math.cos(a1) * Math.cos(a2) * Math.sin(b2 / 2) * Math.sin(b2 / 2);
    const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    const distance = R * c; // 计算得到的距离，单位为公里

    return distance;
}

export function getDistanceFromLatLonInKm(lat1, lon1, lat2, lon2) {
    const R = 6371; // 地球平均半径，单位为公里
    const dLat = deg2rad(lat2 - lat1);
    const dLon = deg2rad(lon2 - lon1);
    const a =
        Math.sin(dLat / 2) * Math.sin(dLat / 2) +
        Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) *
        Math.sin(dLon / 2) * Math.sin(dLon / 2);
    const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    const d = R * c;
    return {
        km: d,
        m: d * 1000
    };
}

// 将角度转换为弧度
function deg2rad(deg) {
    return deg * (Math.PI / 180);
}

function vacanciesTo(vacancies) {
    if (vacancies >= 0) {
        return vacancies + "人"
    } else {
        return '不限人数'
    }
}

function salaryGlobal(type = 'min') {
    const salay = [2, 5, 10, 15, 20, 25, 30, 50, 80];
    const salaymax = [2, 5, 10, 15, 20, 25, 30, 50, 80, 100];
    const salarys = salay.map((item, index) => ({
        label: item + 'k',
        value: item * 1000,
        children: CloneDeep(salaymax).splice(index).map((vItem) => ({
            label: vItem + 'k',
            value: vItem * 1000,
        }))
    }))

    return salarys
}

class CustomSystem {
    constructor() {
        const systemInfo = uni.getSystemInfoSync();
        this.systemInfo = systemInfo
    }
}
const customSystem = new CustomSystem()

function setCheckedNodes(nodes, ids) {
    // 处理每个第一层节点
    nodes.forEach((firstLayer) => {
        // 初始化或重置计数器
        firstLayer.checkednumber = 0;

        // 递归处理子树
        const traverse = (node) => {
            // 设置当前节点选中状态
            const shouldCheck = ids.includes(node.id);
            if (shouldCheck) node.checked = true;

            // 统计后代节点（排除首层自身）
            if (node !== firstLayer && node.checked) {
                firstLayer.checkednumber++;
            }

            // 递归子节点
            if (node.children) {
                node.children.forEach((child) => traverse(child));
            }
        };

        // 启动当前首层节点的遍历
        traverse(firstLayer);
    });
}

const formatTotal = (total) => {
    if (total < 10) return total.toString(); // 直接返回小于 10 的数

    const magnitude = Math.pow(10, Math.floor(Math.log10(total))); // 计算数量级
    const roundedTotal = Math.floor(total / magnitude) * magnitude; // 去掉零头

    return `${roundedTotal}+`;
};

export function formatDate(isoString) {
    const date = new Date(isoString);
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0'); // 月份从 0 开始，需要 +1
    const day = String(date.getDate()).padStart(2, '0');
    const hours = String(date.getHours()).padStart(2, '0');
    const minutes = String(date.getMinutes()).padStart(2, '0');
    const seconds = String(date.getSeconds()).padStart(2, '0');

    return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
}

export function insertSortData(data, attribute = 'createTime') {
    const sortedData = data.sort((a, b) => new Date(b[attribute]) - new Date(a[attribute])); // 按时间降序排序
    const result = [];
    let lastDate = '';
    let lastTitle = ''


    const now = new Date();
    const todayStr = now.toISOString().split('T')[0]; // 获取今天的日期字符串
    const yesterday = new Date(now.setDate(now.getDate() - 1)).toISOString().split('T')[0]; // 获取昨天的日期字符串
    const twoDaysAgo = new Date(now.setDate(now.getDate() - 1)).toISOString().split('T')[0]; // 获取前天的日期字符串

    sortedData.forEach(item => {
        const itemAttribute = item[attribute].replace('T', ' ')
        const itemDate = itemAttribute.split(' ')[0]; // 提取日期部分

        let title = itemDate;
        if (itemDate === todayStr) {
            title = '今天';
        } else if (itemDate === yesterday) {
            title = '昨天';
        } else if (itemDate === twoDaysAgo) {
            title = '前天';
        }

        if (lastDate !== itemDate) {
            result.push({
                title,
                isTitle: true
            });
            lastDate = itemDate;
            lastTitle = title;
        }

        result.push({
            ...item,
            isTitle: false
        });
    });

    return [result, lastTitle];
}

function getWeeksOfMonth(year, month) {
    const firstDay = new Date(year, month - 1, 1); // 当月第一天
    const lastDay = new Date(year, month, 0); // 当月最后一天
    const weeks = [];
    let week = [];

    for (let d = new Date(firstDay); d <= lastDay; d.setDate(d.getDate() + 1)) {
        // 补充第一周的上个月日期
        if (week.length === 0 && d.getDay() !== 1) {
            let prevMonday = new Date(d);
            prevMonday.setDate(d.getDate() - (d.getDay() === 0 ? 6 : d.getDay() - 1));
            while (prevMonday < d) {
                week.push({
                    year: prevMonday.getFullYear(),
                    month: prevMonday.getMonth() + 1,
                    day: prevMonday.getDate(),
                    fullDate: getLocalYYYYMMDD(prevMonday), // 修正
                    weekday: ["星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"][prevMonday.getDay()],
                    isCurrent: false // 上个月日期
                });
                prevMonday.setDate(prevMonday.getDate() + 1);
            }
        }

        // 添加当前月份的日期
        week.push({
            year: d.getFullYear(),
            month: d.getMonth() + 1,
            day: d.getDate(),
            fullDate: getLocalYYYYMMDD(d), // 修正
            weekday: ["星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"][d.getDay()],
            isCurrent: true // 当前月的日期
        });

        // 如果到了月末但当前周未满7天，需要补足到周日
        if (d.getTime() === lastDay.getTime() && week.length < 7) {
            let nextDay = new Date(d);
            nextDay.setDate(d.getDate() + 1);
            while (week.length < 7) {
                week.push({
                    year: nextDay.getFullYear(),
                    month: nextDay.getMonth() + 1,
                    day: nextDay.getDate(),
                    fullDate: getLocalYYYYMMDD(nextDay), // 修正
                    weekday: ["星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"][nextDay.getDay()],
                    isCurrent: false // 下个月日期
                });
                nextDay.setDate(nextDay.getDate() + 1);
            }
        }

        // 如果本周满了（7天）或者到了月末
        if (week.length === 7 || d.getTime() === lastDay.getTime()) {
            weeks.push([...week]); // 存入当前周
            week = []; // 清空，准备下一周
        }
    }

    return weeks;
}

// 新增工具函数：将日期格式化为本地 YYYY-MM-DD 字符串 
function getLocalYYYYMMDD(date) {
    const y = date.getFullYear();
    const m = String(date.getMonth() + 1).padStart(2, '0');
    const d = String(date.getDate()).padStart(2, '0');
    return `${y}-${m}-${d}`;
}

function isFutureDate(dateStr) {
    const inputDate = new Date(dateStr);
    const today = new Date();

    // 只比较年月日，不考虑具体时间
    today.setHours(0, 0, 0, 0);
    inputDate.setHours(0, 0, 0, 0);

    return inputDate > today;
}

function parseQueryParams(url = window.location.href) {
    const queryString = url.split('?')[1]?.split('#')[0];
    const params = {};
    if (!queryString) return params;

    queryString.split('&').forEach(param => {
        const [key, value] = param.split('=');
        if (key) {
            params[decodeURIComponent(key)] = decodeURIComponent(value || '');
        }
    });

    return params;
}

export const $api = {
    msg,
    prePage,
    sleep,
    request,
    createRequest,
    streamRequest,
    chatRequest,
    insertSortData,
    uploadFile
}

export default {
    $api,
    navTo,
    cloneDeep,
    formatDate,
    getdeviceInfo,
    checkingPhoneRegExp,
    checkingEmailRegExp,
    throttle,
    debounce,
    haversine,
    getDistanceFromLatLonInKm,
    vacanciesTo,
    salaryGlobal,
    customSystem,
    setCheckedNodes,
    formatTotal,
    getWeeksOfMonth,
    isFutureDate,
    parseQueryParams
}