Node.js中fs模块实现配置文件的读写操作

const fs = require('fs');

const path = require('path');
const date = getDate();
// 文件夹路径 ./storeConfigs/${date.year}/${date.month}
const folderPath = path.resolve(__dirname, 'storeConfigs', `${date.year}`, `${date.month}`);
// 用date.day来定义文件名  ./storeConfigs/${date.year}/${date.month}/${date.day}
const aFilePath = path.resolve(folderPath, `${date.day}`);
// 获取当前日期
function getDate() {
    const currentDate = new Date();
    const year = currentDate.getFullYear();
    const month = currentDate.getMonth() + 1;
    const day = currentDate.getDate();
    return { year: year, month: month, day: day };
}

function CheckPathOrFiles() {
    if (!fs.existsSync(folderPath)) {
            mkdirp(folderPath);
            fs.writeFileSync(aFilePath, '{}');
        } else {
            if (!fs.existsSync(aFilePath)) {
                console.log(`创建文件：${aFilePath}`);
                fs.writeFileSync(aFilePath, '{}');
            }
        }
}
function mkdirp(dir) {
    if (fs.existsSync(dir)) { return true; }
    const dirname = path.dirname(dir);
    mkdirp(dirname); // 递归创建父目录
    fs.mkdirSync(dir);
}

fs.mkdirSync(folderPath, { recursive: true }); // 递归创建路径

function getHostConfigs() {
    console.log('进入读取环节..')
    try {
        CheckPathOrFiles()
        // 读取文件配置
        const data = fs.readFileSync(aFilePath, 'utf8');
        const hostConfigs = JSON.parse(data);
        console.log('配置校验成功！！');
        return hostConfigs;
    } catch (error) {
        console.error('读取失败:', error);
        return null;
    }
}

function updateHostConfigs(config) {
    let hostConfigs = getHostConfigs();
    if (!hostConfigs) {
        hostConfigs = {};
    }
    if (config.host) {
        hostConfigs[config.host] = config;
    }
    // 写入配置
    fs.writeFile(aFilePath, JSON.stringify(hostConfigs), (err) => {
        if (err) {
            console.error('写入出错:', err);
        } else {
            console.log('配置写入成功..');
        }
    });
    console.log(hostConfigs);
}

module.exports = {
    updateHostConfigs,
    getHostConfigs
};