/*
 * @Autor: hlb
 * @Date: 1970-01-01 08:00:00
 * @LastEditors: hlb
 * @LastEditTime: 2020-11-25 18:37:34
 * @description: 工具
 */
import toPinyin from "./toPinyin";

/**
 * 根据拼音首字母筛选排序分组
 * @param {Array} arr 原数组
 * @param {String} key 原数组需要筛选的字段
 * @returns {Array} 返回一个[{name: A,value: []}] 格式的二维数组
 */
export function getGroupByPinyin(arr, key = 'name') {
    if (!arr) return

    // 获取A-Z字母数组
    let keys = [...Array(26).keys()].map((i) => String.fromCharCode(i + 65));

    arr = arr.map((n) => ({
        ...n,
        py: toPinyin.chineseToInitials(
            toPinyin.chineseToPinYin(n[key].substr(0, 1))
        ),
    }));

    let group = [];
    for (const i of keys) {
        // 新数组一级结构，可自行修改
        let item = {
            name: i,
            value: [],
        };
        for (const j of arr) {
            if (j.py === i) {
                item.value.push(j);
            }
        }
        if (item.value.length > 0) {
            item.value.sort((a, b) => a[key].localeCompare(b[key]));
            group.push(item);
        }
    }
    return group;
}

/**
 * 初始化 var barcodeModel = uni.requireNativePlugin("iData-BarcodePlugin-BarcodeModule")
 * @param {*} onScan 
 * @returns 
 */
export function initBarcodeModule() {
    var barcodeModel = uni.requireNativePlugin("iData-BarcodePlugin-BarcodeModule")
    barcodeModel.initScan((ret) => {
        console.log('initBarcodeModule', ret);
    });
    return barcodeModel
}

/**
 * 页面监听event事件,建议在页面onLoad方法里调用
 * @param {*} payload 
 * @returns 
 */
export function useGlobalEvent(onScan) {
    if (typeof onScan !== 'function') {
        throw new Error('onScan 必须是函数');
    }
    let barcodeModel = initBarcodeModule()

    //页面监听event事件,建议在页面onLoad方法里调用
    var globalEvent = uni.requireNativePlugin('globalEvent');
    globalEvent.addEventListener('iDataBarcodeEvent', (e) => {
        onScan(e);
    });
    return () => {
        globalEvent.removeEventListener('iDataBarcodeEvent', onScan);
        barcodeModel.closeScan((ret) => {});
    };
}