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{
  "name": "FileBrowser",
  "version": "0.0.1",
  "description": "A command-line cross-platform file browser !",
  "dependencies": {
    
  }
}

/**
 * nodejs的标准输入输出流实现命令行程序，实现文件的读取和显示，类似于*nix系统里的ls,cat，cd等命令

 *Module dependencies
 */
// "use strict";

var fs = require('fs'),
    stdin = process.stdin,
    stdout = process.stdout,
    path = require('path'),
    workDir=process.cwd();


function async(err,files) {
    console.log('');


    if (!files.length) {
        return console.log("    \033[31m No files to show !  \033[39m\n");
    }

    console.log('   Select which file or directory you want to see\n');

    let stats=[];

    function file(i) {
        let filename = files[i];

        fs.stat(path.join(workDir,filename),function (err,stat) {
            if (err)
                return console.error(err);

            stats[i]=stat;
            if (stat.isDirectory()) {
                console.log('   ' + i + '    \033[36m' + filename + '/\033[39m');
            }
            else {
                console.log('   ' + i + '   \033[90m' + filename + '\033[39m');

            }
            // i++;
            if (++i === files.length) {
                // get input of choice.
                read();

            }
            else {
                file(i);

            }

        })
    }

    function option(data) {
        let filename = files[Number(data)];
        if (!filename){
            stdout.write('  \033[31m Enter your choice:\033[39m    ');
        }
        else if (!stats[Number(data)].isDirectory()) {
            stdin.pause();
            fs.readFile(path.join(workDir,filename), 'utf8', function (err, data) {
                if (err)
                    return console.error(err);


                console.log('');
                console.log('\033[90m' + data.replace(/(.*)/g, '     $1') + '\033[39m');

            });
        }
        else {
            stdin.pause();
            fs.readdir(path.join(workDir,filename), function (err, files) {
                if (err)
                    return console.error(err);
                console.log('');
                console.log('   (' + files.length + ' files');
                files.forEach(function (file) {
                    console.log('   -   ' + file);

                });
                console.log('');

            });
        }


    }

    function read(){
        console.log('');
        stdout.write('  \033[33m Enter your choice:\033[39m    ');
        stdin.resume();
        // stdin.setEncoding('utf8');
        stdin.on('data',option);
    }

    file(0);
}

// equal to :   fs.readdir('.', async());
// fs.readdir(__dirname, async);
fs.readdir(workDir, async);