import { Message } from 'element-ui'
import router from '../router'
import Constant from '../utils/constant'

/**
 * 判断用户是否登录
 */
export function checkUserLogin(fn) {
    let token = localStorage.getItem(Constant.STORAGE_KEY.TOKEN)
    let userType = localStorage.getItem(Constant.STORAGE_KEY.USER_TYPE)
    if (isNull(token) || isNull(userType)) {
        goToPage('console', true)
        return
    }
    if (fn) {
        fn()
    }
}

/**
 * 判断是否为空
 * @param data
 * @returns {boolean}
 */
export function isNull(data) {
    if (data === undefined) {
        return true
    } else if (data === null) {
        return true
    } else if (typeof data === 'string' && (data.length === 0 || data === '' || data === 'undefined' || data === 'null')) {
        return true
    } else if ((data instanceof Array) && data.length === 0) {
        return true
    }
    return false
}

/**
 * 判断不为空
 * @param data
 * @returns {boolean}
 */
export function isNotNull(data) {
    return !isNull(data)
}

/**
 * 显示顶部红色通知
 * @param msg
 */
export function showDanger(msg) {
    if (isNull(msg)) {
        return
    }
    Message({
        message: msg,
        type: 'error',
        showClose: true
    })
}

/**
 * 显示顶部橙色通知
 * @param msg
 */
export function showWarning(msg) {
    if (isNull(msg)) {
        return
    }
    Message({
        message: msg,
        type: 'warning',
        showClose: true
    });
}



/**
 * 显示顶部绿色通知
 * @param msg
 */
export function showSuccess(msg) {
    Message({
        message: msg,
        type: 'success',
        showClose: true
    })
}



/**
 * 页面跳转
 * @param path
 * @param isRepalce
 */
export function goToPage(path, isRepalce) {
    if (isRepalce) {
        router.replace(path)
    } else {
        router.push(path)
    }
}

/**
 * 获取当前vue页面名称
 * @param path
 * @param isRepalce
 */
export function getCurrentPage() {
    let hash = location.hash.replace('#', '')
    if (hash.indexOf('?') > 0) {
        hash = hash.substring(0, hash.indexOf('?'))
    }
    return hash
}

/**
 * 生成从[min,max]的随机数
 * @param min
 * @param max
 * @returns {number}
 */
export function randomNum(min, max) {
    return Math.round(Math.random() * (max - min) + min)
}


/**
 * 获取uuid
 */
export function getUUID() {
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, c => {
        return (c === 'x' ? (Math.random() * 16 | 0) : ('r&0x3' | '0x8')).toString(16)
    })
}