dev-diary/Diary.js

Developer Diary

#!/usr/bin/env nodejs

var fs = require("fs");


const readline = require('readline');

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});






function statPath(path) {
  try {
    return fs.statSync(path);
  } catch (ex) {}
  return false;
}


function ReadDiary(path)
{
	var exist = statPath(path);
	if(exist && exist.isFile())
	{
		//Read it
		var data = fs.readFileSync(path, "utf-8");
		return data;
	}else{

		var file = fs.openSync(path, "wx+");
		fs.writeFileSync(path, '{"Entrys": []}', "utf-8");
		var data = fs.readFileSync(path, "utf-8");
		fs.close(file);
		return data;

	}
}

function addEntry(path, oldJson, message)
{
	var latest = oldJson.Entrys.length;
	oldJson.Entrys[latest] = {"id":latest, "Content": message, "Date": new Date().toString()};
	//console.log(oldJson);
	return JSON.stringify(oldJson);

}


function Entry()
{
	var path = process.cwd()+"/Diary.json";
	var fileContent = JSON.parse(ReadDiary(path));



	rl.question('Input Your entry: ', (answer) => {
	  // TODO: Log the answer in a database
	  	var newJson = addEntry(path, fileContent, answer);

		fs.writeFileSync(path,newJson, "utf-8");

	  	rl.close();
	  	process.exit(1);
	});


	

	
}


function LatestEntry()
{
	var path = process.cwd()+"/Diary.json";
	var content = JSON.parse(ReadDiary(path));

	var l = content.Entrys.length;
	if(l==0)
	{
		console.log(content.Entrys[0].Content);
	}else
	{
		console.log(content.Entrys[l-1].Content);
	}
}


function AllEntrys()
{
	var path = process.cwd()+"/Diary.json";
	var content = JSON.parse(ReadDiary(path));

	var l = content.Entrys.length;

		for(var i=0; i<l; i++)
		{
			console.log(content.Entrys[i].Date + " : "+content.Entrys[i].Content);
		}	
}


if(typeof process.argv[2]!= "undefined")
{
	if(process.argv[2]=="write")
	{
		Entry();
		

	}else if(process.argv[2] == "read")
	{
		LatestEntry();
		process.exit(1);
	}else if(process.argv[2] =="readall")
	{
		AllEntrys();
		process.exit(1);
	}
}