common.js

import dayjs from 'dayjs'
import { validateIdCard } from './commonReg.js'

// sessionStorage 保存 获取
export function setSessionStorage(key, data) {
    if (!key || data == null) {
        return
    }
    if (typeof data === 'object') {
        sessionStorage.setItem(key, JSON.stringify(data))
        return
    }
    sessionStorage.setItem(key, data)
}

export function getSessionStorage(key) {
    if (!key) {
        return ''
    }
    let result = sessionStorage.getItem(key) || ''
    try {
        return JSON.parse(result)
    } catch {
        return result
    }
}

// localStorage 保存 获取
export function setLocalStorage(key, data) {
    if (!key || data == null) {
        return
    }
    if (typeof data === 'object') {
        localStorage.setItem(key, JSON.stringify(data))
        return
    }
    localStorage.setItem(key, data)
}

export function getLocalStorage(key) {
    if (!key) {
        return ''
    }
    let result = localStorage.getItem(key) || ''
    if (!result) {
        return result
    }
    return JSON.parse(result)
}

/**
 * 防抖
 * @param {Function} fu 
 * @param {Number} wait 
 * @returns 
 */
export function debounce(fu, wait = 300) {
    let timer
    return function () {
        const context = this
        const args = [...arguments]
        if (timer) clearTimeout(timer)
        timer = setTimeout(() => {
            fu.apply(context, args)
        }, wait)
    }
}

/**
 * 请求参数处理
 * @param {Object} source 原数据
 * @param {Object} obj 处理规则
 */
export function fetchDataHandle(source = {}, obj = {}) {
    const data = source || {}
    const result = {}
    Reflect.ownKeys(obj).forEach(key => {
        // 数组 <=> 字符串
        if (obj[key] === 'arrToStr') {
            const temp = data[key] || []
            temp.sort((a, b) => a - b)
            result[key] = temp.join(',') || ''
        } else if (obj[key] === 'strToArr') {
            result[key] = data[key] ? data[key].split(',') : []
        } else if (obj[key] === 'strToArrNum') {
            result[key] = data[key] ? data[key].split(',').map(e => +e) : []
        } else if (obj[key] === 'arrToAdd') {
            // 地址数组 => 最后一级地址
            result[key] = data[key] ? data[key][data[key].length - 1] : ''
        } else if (obj[key] === 'addToArr') {
            result[key] = addToArr(data[key])
        }
    })
    return {
        ...data,
        ...result
    }
}

// 最后一级地址 => 地址数组
export function addToArr(str = '', level = 5) {
    if (!str) return []
    if (str.length === 2) {
        return [str]
    }
    let temp = [
        str.substring(0, 2),
        str.substring(2, 4),
        str.substring(4, 6),
        str.substring(6, 9),
        str.substring(9, 12),
    ]
    temp = temp.filter(e => e !== '00' || e !== '000')
    const suffix = {1: '00000000', 2: '000000', 3: '000', 4: ''}
    for (let i = 1; i < temp.length; i++) {
        temp[i] = temp[i - 1] + temp[i]
    }
    for (let i = 1; i < temp.length; i++) {
        temp[i] = temp[i] + suffix[i]
    }
    return temp.slice(0, level)
}

// 从身份证号获取基础信息
export function getInfoByIdCard(idCard) {
    if (!validateIdCard(idCard)) return {}
    const dataBirth = `${idCard.substring(6, 10)}-${idCard.substring(10, 12)}-${idCard.substring(12, 14)}`
    const gender = idCard.substring(16, 17) % 2 || 2
    const age = dayjs().diff(dayjs(dataBirth), 'years')
    return {
        dataBirth,
        gender,
        age
    }
}

// 根据身高体重自动计算BMI
export function calculateBMI(heightVal, weightVal) {
    let bmi = null
    if (heightVal && weightVal) {
        let height = parseFloat(heightVal)
        let weight = parseFloat(weightVal)
        let res = weight / (height * height / 100 / 100)
        bmi = res.toFixed(2)
    }
    return bmi
}

// 多选框选项排斥
export function checkboxReject(val = [], exclude = []) {
    if (!val.length) return []
    const last = val[val.length - 1]
    let arr = []
    if (exclude.includes(last)) {
        arr = [last]
    } else {
        arr = val.filter(e => !exclude.includes(e))
    }
    return arr
}

// 判断是否在微信中
export function isWeiXin() {
    const ua = window.navigator.userAgent.toLowerCase()
    return /micromessenger/.test(ua)
}


//获取url参数
export function getQueryVariable(variable, urlInfo) {
    let url = decodeURI(decodeURI(urlInfo || window.location.href))
    console.log(url)
    let i = url.indexOf('?')
    let queryStr = url.substr(i + 1)
    let vars = queryStr.split("&");
    for (let i = 0; i < vars.length; i++) {
        let pair = vars[i].split("=");
        if (pair[0] == variable) {
            return pair[1];
        }
    }
    return '';
}

//原生方法调用 当前方法传参数两种 字符串或者map
export function callMobile(handlerInterface, parameters) {
    let classStr = Object.prototype.toString.call(parameters);
    if (classStr === '[object String]' || classStr === '[object Object]') {
        let param = parameters;
        if (classStr === "[object Object]") { //判断传参是str ,还是object
            //handlerInterface由iOS addScriptMessageHandler与andorid addJavascriptInterface 代码注入而来。
            param = JSON.stringify(parameters);//参数必须转化成json格式
        }
        try {
            if (isIOSWebKit()) {//ios
                if (window.webkit !== undefined) {
                    if (param == '{}') {
                        window.webkit.messageHandlers[handlerInterface].postMessage(null);
                    } else {
                        window.webkit.messageHandlers[handlerInterface].postMessage(param);
                    }
                }
            } else if (isIOSWebKit() === false) {
                //安卓传输不了js json对象，只能传输string
                if (param == '{}') {
                    window.H5page[handlerInterface]();
                } else {
                    window.H5page[handlerInterface](param);
                }
            }
        } catch (e) {

        }
    }
}