const fs = require('fs');
const path = require('path');

// 创建目录
async function createFolder(folderToCreate) {
    let currentFolder = path.join(folderToCreate);
    let parentFolder = path.join(currentFolder, '../');
    // console.log({ currentFolder: currentFolder, parentFolder: parentFolder });
    if (!fs.existsSync(currentFolder)) {
        // 文件夹不存在，创建文件夹
        createFolder(parentFolder);  // 保证父级文件夹存在
        fs.mkdirSync(currentFolder); // 创建当前级文件夹
    } else {
        // 否则就什么也不做
    }
}

// 保存 JSON
function saveJSON({ saveFolder, now, fileNameSuffix, object, compress = true, uncompress = true }) {
    if (LATEST_DATA_ONLY) return;

    let year = now.substring(0, 4);
    let month = now.substring(5, 7);
    let day = now.substring(8, 10);
    let hour = now.substring(11, 13);
    let minute = now.substring(14, 16);
    // console.log(now);
    // console.log( "year, month, day, hour, minute: " + year + ", " + month + ", " + day + ", " + hour + ", " + minute);

    // 创建当前文件夹
    let folder = `${saveFolder}/${fileNameSuffix}/${year}/${month}/${day}`;
    createFolder(folder);
    let fileName = `${folder}/${year}${month}${day}_${hour}${minute}`;

    // 生成文件名
    // '2022-07-23T10:11:38.650Z' => '20220723_1011'
    // let fileName = now.replace(/T/, '_').replace(/:\d{2}.\d{3}Z/, '').replace(/[-:]/g, '');
    // console.log(`fileName is ${fileName}`);

    if (compress)
        fs.writeFileSync(`${fileName}.min.json`, JSON.stringify(object));
    if (uncompress)
        fs.writeFileSync(`${fileName}.json`, JSON.stringify(object, "", "\t"));
}

module.exports = {
    createFolder,
    saveJSON,
}