let fs = require('fs');//引用文件系统模块

let PATH = `./app_zijietiaodong/`;//当前文件夹

let ext = {

    readFileList: function(path, filesList) {

        filesList = filesList || [];

        let files = fs.readdirSync(path);

        files.forEach(function (filename, index) {

            //var stat = fs.statSync(path + filename);//读取的文件信息

            if (fs.statSync(path + filename).isDirectory()) {//isDirectory 判断是不是目录

                //递归读取文件

                ext.readFileList(`${path}${filename}/`, filesList);

            } else {

                filesList.push({

                    path,//路径

                    filename,//名字

                });

            }

        })

        return filesList

    },

    //修改文件名称

    rename: function(oldPath, newPath, filename, newSuffixFile) {

        fs.rename(oldPath, newPath, function(err) {

            if (err) {

                throw err;

            }

            console.log(`${filename} 修改为 => ${newSuffixFile}`)

        });

    },

    //批量修改文件名称

    getChangeFiles: function (path, oldSuffix, newSuffix) {

        if(!oldSuffix && !newSuffix){

            console.log(`后缀未设置`);

        }

        this.readFileList(path).forEach((item) => {

            if(item.filename.indexOf(oldSuffix) > -1){

                console.log(item.filename)

                let oldPath = item.path + item.filename,

                newSuffixFile = item.filename.split(oldSuffix)[0] + newSuffix,

                newPath = item.path + newSuffixFile

                ext.rename(oldPath, newPath, item.filename, newSuffixFile);

            }

        });

    }

}

ext.getChangeFiles(PATH, `.wxml`, `.ttml`);