/**
 * Tools
 * @author Tevin
 */

import moment from 'moment';
import Taro from '@tarojs/taro';

export class Tools {

    /**
     * 显示消息
     * @param msg
     * @param [duration=2000]
     * @param [mask=false]
     */
    static toast(msg, duration = 2000, mask = false) {
        Taro.showToast({
            title: msg,
            icon: 'none',
            mask,
            duration,
        });
    }

    /**
     * URL参数解析
     * @param {String} name
     * @param {String} [search]
     * @return {String|Null}
     */
    static getUrlParam(name, search) {
        if (process.env.TARO_ENV === 'weapp') {
            return null;
        }
        search = search || window.location.search;
        const reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
        const r = search.substr(1).match(reg);
        if (r !== null) {
            return decodeURIComponent(r[2]);
        } else {
            return null;
        }
    }

    /**
     * 读取文件 base64
     * @param {File} file
     * @return {Promise<string>}
     */
    static getFileBase64(file) {
        return new Promise((resolve, reject) => {
            const reader = new FileReader();
            reader.onload = () => resolve(reader.result);
            reader.onerror = error => reject(error);
            reader.readAsDataURL(file);
        });
    }

    /**
     * 生成 GUID
     * @return {string}
     */
    static createGUID() {
        return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
            let r = Math.random() * 16 | 0,
                v = c === 'x' ? r : ((r & 0x3) | 0x8);
            return v.toString(16);
        });
    }

    /**
     * 获取随机字符串
     * @param {number} long
     * @return {string}
     */
    static getRandomString(long) {
        long = long || 32;
        const template = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
        const count = template.length;
        let result = '';
        for (let i = 0; i < long; i++) {
            result += template.charAt(Math.floor(Math.random() * count));
        }
        return result;
    }

    /**
     * 检查网络状态
     */
    static checkOnlineState(callback) {
        // 网页模式
        if (process.env.TARO_ENV === 'h5') {
            // 网络已开启
            if (navigator.onLine) {
                // 用图片资源测试网络状态
                const img = new Image();
                img.onload = () => {
                    img.onload = null;
                    callback && callback(true);
                };
                img.onerror = () => {
                    img.onerror = null;
                    callback && callback(false);
                };
                img.src = 'http://gz.zhiheiot.com/disp/download/buildArchive/online.png?t=' + Date.now();
            }
            // 网络未开启
            else {
                callback && callback(false);
            }
        }
        // 补充：小程序模式用 getNetworkType
    }

    /**
     * 判断是否是数字
     * @param {*} data
     * @return {Boolean}
     */
    static isNumber(data) {
        return Object.prototype.toString.call(data) === '[object Number]';
    }

    /**
     * 判断是否是字符串
     * @param {*} data
     * @return {Boolean}
     */
    static isString(data) {
        return Object.prototype.toString.call(data) === '[object String]';
    }

    /**
     * 判断是否为布尔值
     * @param {*} data
     * @return {Boolean}
     */
    static isBoolean(data) {
        return Object.prototype.toString.call(data) === '[object Boolean]';
    }

    /**
     * 判断是否是普通对象
     * @param {*} data
     * @return {Boolean}
     */
    static isObject(data) {
        return Object.prototype.toString.call(data) === '[object Object]';
    }

    /**
     * 判断是否是数组
     * @param {*} data
     * @return {Boolean}
     */
    static isArray(data) {
        return Object.prototype.toString.call(data) === '[object Array]';
    }

    /**
     * 判断是否是函数
     * @param {*} data
     * @return {Boolean}
     */
    static isFunction(data) {
        return Object.prototype.toString.call(data) === '[object Function]';
    }

    /**
     * 判断是否为未定义
     * @param {*} data
     * @return {Boolean}
     */
    static isUndefined(data) {
        return Object.prototype.toString.call(data) === '[object Undefined]';
    }

    /**
     * 判断是否为 null
     * @param {*} data
     * @return {Boolean}
     */
    static isNull(data) {
        return Object.prototype.toString.call(data) === '[object Null]';
    }

    /**
     * 是否为空对象
     * @param {*} obj
     * @return {Boolean}
     */
    static isEmptyObject(obj) {
        if (!Tools.isObject(obj)) {
            return true;
        }
        for (let p in obj) {
            if (obj.hasOwnProperty(p)) {
                return false;
            }
        }
        return true;
    }

    /**
     * 判断对象是否在属性上相等
     * @param {String} a
     * @param {String} b
     * @return {Boolean}
     */
    static isObjValEqual(a, b) {
        const aProps = Object.getOwnPropertyNames(a);
        const bProps = Object.getOwnPropertyNames(b);
        if (aProps.length !== bProps.length) {
            return false;
        }
        for (let i = 0, propName; i < aProps.length; i++) {
            propName = aProps[i];
            if (a[propName] !== b[propName]) {
                return false;
            }
        }
        return true;
    }

    /**
     * 统计字符串占位宽度
     * @param {String} string
     * @return {Number}
     */
    static countStringLength(string) {
        let realLength = 0;
        const len = string.length;
        let charCode = -1;
        for (let i = 0; i < len; i++) {
            charCode = string.charCodeAt(i);
            // 128编号内字符占1位宽度
            if (charCode >= 0 && charCode <= 128) {
                realLength += 1;
            }
            // 128编号后字符(包括中文)占2位宽度
            else {
                realLength += 2;
            }
        }
        return realLength;
    }

    /**
     * 获取字符串基于字节长度的剪切点
     * @param {String} string
     * @param {Number} byteLength
     * @return {Number}
     */
    static getStringCutIndex(string, byteLength) {
        if (byteLength === 0) {
            return 0;
        }
        let countLength = 0;
        let charCode = -1;
        let cutIndex = 0;
        const len = string.length;
        for (let i = 0; i < len; i++) {
            charCode = string.charCodeAt(i);
            // 128编号内字符占1位宽度
            if (charCode >= 0 && charCode <= 128) {
                countLength += 1;
            }
            // 128编号后字符(包括中文)占2位宽度
            else {
                countLength += 2;
            }
            // 裁剪位置
            if (countLength > byteLength) {
                cutIndex = i;
                break;
            }
        }
        return cutIndex;
    }

    /**
     * 限制数值范围，超出边界返回边界值
     * @param {Number|String} num
     * @param {[Number,Number]} range
     * @return {Number}
     */
    static limitNumberRange(num, range) {
        num = Number(num);
        num = num < range[0] ? range[0] : num;
        num = num > range[1] ? range[1] : num;
        return num;
    }

    /**
     * 深拷贝
     * @param {Object} source
     * @return {Object|Array}
     */
    static deepCopy(source) {
        let result = null;
        if (source instanceof Array) {
            result = [];
        } else {
            result = {};
        }
        for (let key in source) {
            if (source.hasOwnProperty(key)) {
                if (typeof source[key] === 'object') {
                    if (Tools.isNull(source[key])) {
                        result[key] = source[key];
                    } else {
                        result[key] = this.deepCopy(source[key]);
                    }
                } else {
                    result[key] = source[key];
                }
            }
        }
        return result;
    }

    /**
     * 深合并
     * @param target
     * @param source
     * @return {Object|Array}
     */
    static deepCombine(target, source) {
        for (let key in source) {
            if (source.hasOwnProperty(key)) {
                if (typeof source[key] === 'object') {
                    if (Tools.isNull(source[key])) {
                        target[key] = source[key];
                    } else {
                        if (Tools.isArray(source[key])) {
                            target[key] = [];
                        } else {
                            target[key] = {};
                        }
                        this.deepCombine(target[key], source[key]);
                    }
                } else {
                    target[key] = source[key];
                }
            }
        }
        return target;
    }

    /**
     * 使用 moment.js 格式化时间戳
     * @param {Number|String} timestamp
     * @param {String} [type='date']
     * @return {String}
     */
    static momentFormat(timestamp, type = 'date') {
        if (!timestamp || timestamp === '0' || timestamp === 0) {
            return '';
        }
        // 字符串
        if (Tools.isString(timestamp)) {
            // 全数值
            if (/^\d+$/.test(timestamp)) {
                // 8位视为无连接符日期
                if (timestamp.length === 8) {
                    const day = timestamp.substr(0, 4) + '-' +
                        timestamp.substr(4, 2) + '-' + timestamp.substr(6, 2);
                    timestamp = (new Date(timestamp)).getTime();
                }
                // 超过8位，视为时间戳
                else if (timestamp.length > 8) {
                    timestamp = parseInt(timestamp);
                }
            }
            // 日期
            else {
                try {
                    timestamp = (new Date(timestamp)).getTime();
                } catch (e) {
                }
            }
        }
        // 转为数值的无连接符日期
        if (timestamp < 9 * 10e6) {
            const timeStr = timestamp + '';
            const day = timeStr.substr(0, 4) + '-' +
                timeStr.substr(4, 2) + '-' + timeStr.substr(6, 2);
            timestamp = (new Date(day)).getTime();
        }
        // 按秒时间戳
        else if (timestamp < 9 * 10e8) {
            timestamp *= 1000;
        }
        const curMoment = moment(timestamp);
        if (type === 'date') {
            return curMoment.format('YYYY-MM-DD');
        } else if (type === 'dateTime') {
            return curMoment.format('YYYY-MM-DD HH:mm');
        } else if (type === 'dateTimeShort') {
            return curMoment.format('MM-DD HH:mm');
        } else if (type === 'dateTimeFull') {
            return curMoment.format('YYYY-MM-DD HH:mm:ss');
        }
    }

    /**
     * 数值转换为时长描述
     * @param {number} timestamp
     * @return {string}
     */
    static durationFormat(timestamp) {
        if (typeof timestamp !== 'number') {
            return '';
        }
        let words = '';
        const duration = moment.duration(timestamp);
        const seconds = duration.get('seconds');
        if (seconds) {
            words = seconds + '秒';
        }
        const minutes = duration.get('minutes');
        if (minutes) {
            words = minutes + '分' + words;
        }
        const hours = parseInt(duration.as('hours'));
        if (hours) {
            words = hours + '小时' + words;
        }
        return words;
    }

    /**
     * 数值转换为金钱格式
     * @param {Number|String} number
     * @return {string}
     */
    static moneyFormat(number) {
        if (!number && typeof number !== 'number' && typeof number !== 'string') {
            return '';
        }
        if (typeof number === 'string') {
            number = Number(number) || 0;
        }
        return number.toFixed(2);
    }

    /**
     * 加法函数，用来得到精确的加法结果
     * @param {Number|String} num1
     * @param {Number|String} num2
     */
    static accAdd(num1, num2) {
        const r1 = Tools.getDecimalLength(num1);
        const r2 = Tools.getDecimalLength(num2);
        const m = Math.pow(10, Math.max(r1, r2));
        return (Number(num1) * m + Number(num2) * m) / m;
    }

    /**
     * 减法函数，用来得到精确的减法结果
     * @param {Number|String} num1
     * @param {Number|String} num2
     */
    static accSub(num1, num2) {
        return Tools.accAdd(num1, -num2);
    }

    /**
     * 乘法函数，用来得到精确的乘法结果
     * @param {Number|String} num1
     * @param {Number|String} num2
     */
    static accMul(num1, num2) {
        let m = 0;
        m += Tools.getDecimalLength(num1);
        m += Tools.getDecimalLength(num2);
        const r1 = Number(num1.toString().replace('.', ''));
        const r2 = Number(num2.toString().replace('.', ''));
        return (r1 * r2) / Math.pow(10, m);
    }

    /**
     * 除法函数，用来得到精确的除法结果
     * @param {Number|String} num1
     * @param {Number|String} num2
     */
    static accDiv(num1, num2) {
        const t1 = Tools.getDecimalLength(num1);
        const t2 = Tools.getDecimalLength(num2);
        const r1 = Number(num1.toString().replace('.', ''));
        const r2 = Number(num2.toString().replace('.', ''));
        return (r1 / r2) * Math.pow(10, t2 - t1);
    }

    /**
     * 求小数点后的数据长度
     * @param {Number|String} num
     * @private
     */
    static getDecimalLength(num) {
        let t = 0;
        try {
            t = num.toString().split('.')[1].length;
        } catch (e) {
        }
        return t;
    }

    /**
     * 判断是否为手机号码
     * @param {Number|String} phone
     * @returns {boolean}
     */
    static isPhone(phone) {
        return /^1[3456789]\d{9}$/.test('' + phone);
    }

    /**
     * 转换周数到日期
     * @param year
     * @param week
     * @param weekDay 需要输出星期几对应的日期 (1~7)
     * @return {Date}
     */
    static transWeekIndexToDate(year, week, weekDay) {
        const yearStart = moment([year, 0, 1]);
        const dayLong = 24 * 60 * 60 * 1000;
        const firstWeekLong = (7 - yearStart.day()) * dayLong;
        const weeksLong = (week - 1) * 7 * dayLong;
        const weekDayLong = weekDay * dayLong;
        const dayTimestamp = yearStart.valueOf() + firstWeekLong + weeksLong + weekDayLong;
        return moment(dayTimestamp).format('YYYY-MM-DD');
    }

    /**
     * 显示调试面板（仅支持H5）
     * @param cssSelector
     * @param callback
     */
    static $_showDevConsole(cssSelector, callback) {
        // 只支持 h5 编译
        if (process.env.TARO_ENV !== 'h5') {
            return;
        }
        const fileref = document.createElement('script');
        fileref.setAttribute('type', 'text/javascript');
        if (window.location.protocol === 'https:') {
            fileref.setAttribute('src', 'https://cdn.jsdelivr.net/npm/eruda');
        } else {
            fileref.setAttribute('src', 'http://cdn.jsdelivr.net/npm/eruda');
        }
        document.getElementsByTagName('head')[0].appendChild(fileref);
        const simulateTouch = (dom, type) => {
            const button = dom;
            const touch = new Touch({
                identifier: Date.now(),
                target: button,
                clientX: 0,
                clientY: 0,
                screenX: 0,
                screenY: 0,
                pageY: 0,
                pageX: 0,
                radiusX: 2.5,
                radiusY: 2.5,
                rotationAngle: 10,
                force: 0.5,
            });
            const touchstart = new TouchEvent(type, {
                cancelable: true,
                bubbles: true,
                composed: true,
                touches: [touch],
                targetTouches: [touch],
                changedTouches: [touch],
            });
            button.dispatchEvent(touchstart);
        };
        const erudaTimer = setInterval(() => {
            if (window.eruda) {
                clearInterval(erudaTimer);
                setTimeout(() => {
                    const container = document.createElement('div');
                    if (cssSelector) {
                        document.querySelector(cssSelector).appendChild(container);
                    } else {
                        document.getElementsByTagName('body')[0].appendChild(container);
                    }
                    window.eruda.init({
                        container: container,
                        useShadowDom: false,
                    });
                    let button = null;
                    setTimeout(() => {
                        button = document.querySelector('.eruda-entry-btn');
                    }, 50);
                    setTimeout(() => {
                        simulateTouch(button, 'touchstart');
                    }, 60);
                    setTimeout(() => {
                        simulateTouch(button, 'touchend');
                    }, 350);
                    setTimeout(() => {
                        console.warn('=====【艾信App调试模式】=====');
                    }, 800);
                    setTimeout(() => {
                        console.warn('点击右下角悬浮工具箱图标可以折叠面板');
                    }, 900);
                    setTimeout(() => {
                        callback && callback();
                    }, 1000);
                }, 100);

            }
        }, 100);
    }

}

// h5 中，实现 rem 转换 px
if (process.env.NODE_ENV === 'development' && process.env.TARO_ENV === 'h5') {
    window.rem = val => {
        const p1 = {
            x: parseFloat(Taro.pxTransform(10, 750)), y: 10,
        };
        const p2 = {
            x: parseFloat(Taro.pxTransform(1000, 750)), y: 1000,
        };
        const value = typeof val === 'number' ? val : parseFloat(val);
        const px = (value - p1.x) * (p2.y - p1.y) / (p2.x - p1.x) + p1.y;
        console.info(Math.round(px) + 'px');
    };
}

global.Tools = Tools;