/**
 * Created by xqq on 18/8/21.
 */
export default function createUniqueString() {
    const timestamp = +new Date() + '';
    const randomNum = parseInt((1 + Math.random()) * 65536) + '';
    return (+(randomNum + timestamp)).toString(32);
}

export function parseTime(time, cFormat) {
    if (arguments.length === 0) {
        return null;
    }
    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
    let date;
    if (typeof time === 'object') {
        date = time;
    } else {
        if (('' + time).length === 10) {
            time = parseInt(time) * 1000;
        }
        date = new Date(time);
    }
    const formatObj = {
        y: date.getFullYear(),
        m: date.getMonth() + 1,
        d: date.getDate(),
        h: date.getHours(),
        i: date.getMinutes(),
        s: date.getSeconds(),
        a: date.getDay()
    };
    const timeStr = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
        let value = formatObj[key];
        if (key === 'a') {
            return ['一', '二', '三', '四', '五', '六', '日'][value - 1];
        }
        if (result.length > 0 && value < 10) {
            value = '0' + value;
        }
        return value || 0;
    });
    return timeStr;
}

export function formatTime(time, option) {
    time = +time * 1000;
    const d = new Date(time);
    const now = Date.now();

    const diff = (now - d) / 1000;

    if (diff < 30) {
        return '刚刚';
    } else if (diff < 3600) { // less 1 hour
        return Math.ceil(diff / 60) + '分钟前';
    } else if (diff < 3600 * 24) {
        return Math.ceil(diff / 3600) + '小时前';
    } else if (diff < 3600 * 24 * 2) {
        return '1天前';
    }
    if (option) {
        return parseTime(time, option);
    } else {
        return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分';
    }
}

// 格式化时间
export function getQueryObject(url) {
    url = url == null ? window.location.href : url;
    const search = url.substring(url.lastIndexOf('?') + 1);
    const obj = {};
    const reg = /([^?&=]+)=([^?&=]*)/g;
    search.replace(reg, (rs, $1, $2) => {
        const name = decodeURIComponent($1);
        let val = decodeURIComponent($2);
        val = String(val);
        obj[name] = val;
        return rs;
    });
    return obj;
}

/**
 * get getByteLen
 * @param {Sting} val input value
 * @returns {number} output value
 */
export function getByteLen(val) {
    let len = 0;
    for (let i = 0; i < val.length; i++) {
        if (val[i].match(/[^\x00-\xff]/ig) != null) {
            len += 1;
        } else {
            len += 0.5;
        }
    }
    return Math.floor(len);
}

export function cleanArray(actual) {
    const newArray = [];
    for (let i = 0; i < actual.length; i++) {
        if (actual[i]) {
            newArray.push(actual[i]);
        }
    }
    return newArray;
}

export function param(json) {
    if (!json) {
        return '';
    }
    return cleanArray(Object.keys(json).map(key => {
        if (json[key] === undefined) {
            return '';
        }
        return encodeURIComponent(key) + '=' +
            encodeURIComponent(json[key]);
    })).join('&');
}

export function param2Obj(url) {
    const search = url.split('?')[1];
    if (!search) {
        return {};
    }
    return JSON.parse('{"' + decodeURIComponent(search).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g, '":"') + '"}');
}

export function html2Text(val) {
    const div = document.createElement('div');
    div.innerHTML = val;
    return div.textContent || div.innerText;
}

export function objectMerge(target, source) {
    /* Merges two  objects,
     giving the last one precedence */

    if (typeof target !== 'object') {
        target = {};
    }
    if (Array.isArray(source)) {
        return source.slice();
    }
    Object.keys(source).forEach((property) => {
        const sourceProperty = source[property];
        if (typeof sourceProperty === 'object') {
            target[property] = objectMerge(target[property], sourceProperty);
        } else {
            target[property] = sourceProperty;
        }
    });
    return target;
}

export function scrollTo(element, to, duration) {
    if (duration <= 0) {
        return;
    }
    const difference = to - element.scrollTop;
    const perTick = difference / duration * 10;
    setTimeout(() => {
        console.log(new Date());
        element.scrollTop = element.scrollTop + perTick;
        if (element.scrollTop === to) {
            return;
        }
        scrollTo(element, to, duration - 10);
    }, 10);
}

export const pickerOptions = [{
    text: '今天',
    onClick(picker) {
        const end = new Date();
        const start = new Date(new Date().toDateString());
        end.setTime(start.getTime());
        picker.$emit('pick', [start, end]);
    }
}, {
    text: '最近一周',
    onClick(picker) {
        const end = new Date(new Date().toDateString());
        const start = new Date();
        start.setTime(end.getTime() - 3600 * 1000 * 24 * 7);
        picker.$emit('pick', [start, end]);
    }
}, {
    text: '最近一个月',
    onClick(picker) {
        const end = new Date(new Date().toDateString());
        const start = new Date();
        start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
        picker.$emit('pick', [start, end]);
    }
}, {
    text: '最近三个月',
    onClick(picker) {
        const end = new Date(new Date().toDateString());
        const start = new Date();
        start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
        picker.$emit('pick', [start, end]);
    }
}];

export function getTime(type) {
    if (type === 'start') {
        return new Date().getTime() - 3600 * 1000 * 24 * 90;
    } else {
        return new Date(new Date().toDateString());
    }
}

export function debounce(func, wait, immediate) {
    let timeout, args, context, timestamp, result;

    const later = function() {
        // 据上一次触发时间间隔
        const last = +new Date() - timestamp;

        // 上次被包装函数被调用时间间隔last小于设定时间间隔wait
        if (last < wait && last > 0) {
            timeout = setTimeout(later, wait - last);
        } else {
            timeout = null;
            // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
            if (!immediate) {
                result = func.apply(context, args);
                if (!timeout) {
                    context = args = null;
                }
            }
        }
    };

    return function(...args) {
        context = this;
        timestamp = +new Date();
        const callNow = immediate && !timeout;
        // 如果延时不存在，重新设定延时
        if (!timeout) {
            timeout = setTimeout(later, wait);
        }
        if (callNow) {
            result = func.apply(context, args);
            context = args = null;
        }

        return result;
    };
}

/**
 * TODO
 * This is just a simple version of deep copy
 * Has a lot of edge cases bug
 * If you want to use a perfect deep copy, use lodash's _.cloneDeep
 */
export function deepClone(source) {
    if (!source && typeof source !== 'object') {
        throw new Error('error arguments', 'shallowClone');
    }
    const targetObj = source.constructor === Array ? [] : {};
    Object.keys(source).forEach((keys) => {
        if (source[keys] && typeof source[keys] === 'object') {
            targetObj[keys] = deepClone(source[keys]);
        } else {
            targetObj[keys] = source[keys];
        }
    });
    return targetObj;
}

export function uniqueArr(arr) {
    return Array.from(new Set(arr));
}

// 格式化文件大小
export function calFileSize(value, fixedNum = 2) {
    if (null === value || value === '') {
        return '0 Bytes';
    }
    const unitArr = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
    let index = 0;
    const srcSize = parseFloat(value);
    index = Math.floor(Math.log(srcSize) / Math.log(1024));
    let size = srcSize / Math.pow(1024, index);
    //  保留的小数位数
    size = size.toFixed(fixedNum);
    return size + unitArr[index];
}

// 将rgb转换为hsl
export function rgbToHsl(r, g, b) {
    r /= 255;
    g /= 255;
    b /= 255;
    const max = Math.max(r, g, b);
    const min = Math.min(r, g, b);
    let h;
    let s;
    const l = (max + min) / 2;

    if (max === min) {
        h = s = 0; // achromatic
    } else {
        const d = max - min;
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
        switch (max) {
            case r:
                h = (g - b) / d + (g < b ? 6 : 0);
                break;
            case g:
                h = (b - r) / d + 2;
                break;
            case b:
                h = (r - g) / d + 4;
                break;
        }
        h /= 6;
    }
    return [h, s, l];
}

/**
 * 自定义查找字段, 根据最后一级某个字段查找完整树(整个父类)
 * @param {*} val     要查找对比的值
 * @param {*} data    要查找的数据
 * @param {*} fKey    要查找对比的字段
 */
export const recursiveTreeByLastLevel = (val, data, fKey = 'value') => {
    let rData = [];
    for (let i = 0, len = data.length; i < len; i++) {
        rData.push(data[i]);
        if (data[i].childList && data[i].childList.length > 0) {
            rData = rData.concat(recursiveTreeByLastLevel(val, data[i].childList, fKey));
            if (rData.some(item => item[fKey] === val)) {
                return rData;
            }
        }
        if (data[i][fKey] === val) {
            return rData;
        }
        rData = [];
    }
    return rData;
};

export const getFirstNav = (childList) => {
    for (let i = 0; i < childList.length; i++) {
        const item = childList[i];
        if (item.routeUrl) {
            return item.routeUrl;
        }
        if (item.childList) {
            const firstNav = getFirstNav(item.childList);
            if (firstNav) {
                return firstNav;
            }
        }
    }
    return undefined;
};

export function modifyThemeColor(oldColor, newColor) {
    console.log('modifyThemeColor', oldColor, newColor);
    if (oldColor === newColor) {
        return;
    }
    document.getElementsByTagName('style').forEach(item => {
        const styleText = item.innerText;
        if (styleText) {
            const styleTag = document.createElement('style');
            document.head.appendChild(styleTag);
            const regExp = new RegExp(oldColor, 'ig');
            styleTag.innerText = styleText.replace(regExp, newColor);
            item.innerText = '';
        }
    });
}

/**
 * post 请求导出excel
 * @param params 是post请求需要的参数
 * @param url 是请求url地址
 */
export function postExcelFile(params, url) {
    const form = document.createElement('form');
    form.style.display = 'none';
    form.action = url;
    form.method = 'post';
    document.body.appendChild(form);

    for (const key in params) {
        const input = document.createElement('input');
        input.type = 'hidden';
        input.name = key;
        input.value = params[key];
        form.appendChild(input);
    }

    form.submit();
    form.remove();
}