MJ - Day2

app/data/zadanie01/sum.txt

@@ -0,0 +1 @@
+108

app/data/zadanieDnia/test.txt

@@ -1,7 +1,7 @@
-You Don't Know JS: ES6 & Beyond
-Foreword
+YoU DoN'T KnOw JS: ES6 & BEyOnD
+FoReWoRd
 
-Kyle Simpson is a thorough pragmatist.
+KyLe SImPsOn iS A ThOrOuGh pRaGmAtIsT.
 
-I can't think of higher praise than this. To me, these are two of the most important qualities that a software developer must have. That's right: must, not should. Kyle's keen ability to tease apart layers of the JavaScript programming language and present them in understandable and meaningful portions is second to none.
-[https://github.com/getify/You-Dont-Know-JS/blob/master/es6%20%26%20beyond/foreword.md]
+I CaN'T ThInK Of hIgHeR PrAiSe tHaN ThIs. To mE, tHeSe aRe tWo oF ThE MoSt iMpOrTaNt qUaLiTiEs tHaT A SoFtWaRe dEvElOpEr mUsT HaVe. ThAt's rIgHt: MuSt, NoT ShOuLd. KyLe's kEeN AbIlItY To tEaSe aPaRt lAyErS Of tHe JAvASCrIpT PrOgRaMmInG LaNgUaGe aNd pReSeNt tHeM In uNdErStAnDaBlE AnD MeAnInGfUl pOrTiOnS Is sEcOnD To nOnE.
+[HtTpS://GiThUb.cOm/gEtIfY/YoU-DoNt-KNoW-JS/bLoB/MaStEr/eS6%20%26%20bEyOnD/FoReWoRd.mD]

app/data/zadanieDnia/test_temp.txt

@@ -0,0 +1,7 @@
+You Don't Know JS: ES6 & Beyond
+Foreword
+
+Kyle Simpson is a thorough pragmatist.
+
+I can't think of higher praise than this. To me, these are two of the most important qualities that a software developer must have. That's right: must, not should. Kyle's keen ability to tease apart layers of the JavaScript programming language and present them in understandable and meaningful portions is second to none.
+[https://github.com/getify/You-Dont-Know-JS/blob/master/es6%20%26%20beyond/foreword.md]

app/zadanie01.js

@@ -1 +1,12 @@
-//Twój kod
+const fs = require('fs');
+
+fs.readFile('./data/zadanie01/input.json', 'utf-8', (err, data) => {
+	if (err) return console.log('Błąd odczytu pliku!');
+
+	let sum = JSON.parse(data).reduce((x, y) => x + y);
+
+	fs.writeFile('./data/zadanie01/sum.txt', sum, err => {
+		let msg = err ? 'Błąd zapisu pliku' : 'Plik poprawnie zapisany';
+		return console.log(msg)
+	});
+});

app/zadanie02.js

@@ -1 +1,14 @@
-//Twój kod
+const fs = require('fs');
+
+let path = './data/zadanie02/';
+
+fs.readdir(path, (err, files) => {
+	if (err) return console.log('Błąd odczytu katalogu');
+
+	files.forEach(file => {
+		console.log(`Nazwa pliku: ${file}`);
+		let data = fs.readFileSync(`${path}${file}`);
+		console.log(data.toString());
+		console.log(`-----------------------------`);
+	});
+});

app/zadanieDnia.js

@@ -1 +1,22 @@
-//Twój kod
+const fs = require('fs');
+
+const path = process.argv.slice(2).toString();
+
+let trawka = (path) => {
+	fs.readFile(path, 'utf-8', (err, data) => {
+		if (err) return console.log('Błąd odczytu pliku');
+
+		let newData = [...data].map((elem, i) => {
+			return i % 2 === 0 ? elem.toUpperCase() : elem
+		})
+
+		console.log(newData.join(''))
+
+		fs.writeFile(path, newData.join(''), err => {
+			let msg = err ? 'Błąd zapisu pliku' : 'Plik poprawnie zapisany';
+			return console.log(msg);
+		})
+	});
+};
+
+trawka(path)