From 590545962585ce140841eb76fc279c224a94e6b3 Mon Sep 17 00:00:00 2001
From: Hitesh Kumar <hk.skit@gmail.com>
Date: Thu, 30 Nov 2017 22:27:52 +0530
Subject: [PATCH] Learned modules in Node.

---
 .gitignore                  |  1 +
 echo_server.js              | 36 ++++++++++++++++++++++++++++++++++++
 events/server.js            | 16 ++++++++++++++++
 modules/server.js           |  2 ++
 modules/shapes/circle.js    | 15 +++++++++++++++
 modules/shapes/index.js     |  6 ++++++
 modules/shapes/package.json |  4 ++++
 modules/shapes/rect.js      | 12 ++++++++++++
 8 files changed, 92 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 echo_server.js
 create mode 100644 events/server.js
 create mode 100644 modules/server.js
 create mode 100644 modules/shapes/circle.js
 create mode 100644 modules/shapes/index.js
 create mode 100644 modules/shapes/package.json
 create mode 100644 modules/shapes/rect.js

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e43b0f9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.DS_Store
diff --git a/echo_server.js b/echo_server.js
new file mode 100644
index 0000000..e423f43
--- /dev/null
+++ b/echo_server.js
@@ -0,0 +1,36 @@
+const http = require('http');
+
+const PORT = 3000;
+
+const server = http.createServer();
+
+
+const onRequest = (request, response) => {
+
+    request.on('error', (err) => {
+        console.error(err);
+        response.statusCode = 400;
+        response.end();
+    });
+    response.on('error', (err) => {
+        console.error(err);
+    });
+
+    const {
+        method, url
+    } = request;
+
+    if (method === 'POST' && url === '/echo') {
+        request.pipe(response);
+    } else {
+        response.statusCode = 404;
+        response.end();
+    }
+};
+
+
+server.on('request', onRequest);
+
+server.listen(PORT, () => {
+    console.log('Server is listening at port:', PORT);
+});
diff --git a/events/server.js b/events/server.js
new file mode 100644
index 0000000..02f8403
--- /dev/null
+++ b/events/server.js
@@ -0,0 +1,16 @@
+const http = require('http');
+
+const PORT = 8080;
+
+const server = http.createServer();
+const onRequest = (request, response) => {
+    response.writeHead(200, {
+        'Content-Type': 'text/html'
+    });
+    response.end(`<h1>Learning NodeJs <em>Macha</em>!!</h1>`);
+};
+
+server.on('request', onRequest);
+server.listen(PORT, () => {
+    console.log(`Listening at ${PORT}`);
+});
diff --git a/modules/server.js b/modules/server.js
new file mode 100644
index 0000000..de04c87
--- /dev/null
+++ b/modules/server.js
@@ -0,0 +1,2 @@
+const shapes = require('./shapes');
+console.log(shapes);
diff --git a/modules/shapes/circle.js b/modules/shapes/circle.js
new file mode 100644
index 0000000..d25bcba
--- /dev/null
+++ b/modules/shapes/circle.js
@@ -0,0 +1,15 @@
+class Circle {
+    constructor(radius, point = {
+        x: 0,
+        y: 0
+    }) {
+        this.radius = radius;
+    }
+
+    get area() {
+        const rSquare = Math.pow(this.radius, 2);
+        return Math.PI * rSquare;
+    }
+}
+
+module.exports = Circle;
diff --git a/modules/shapes/index.js b/modules/shapes/index.js
new file mode 100644
index 0000000..43dd78b
--- /dev/null
+++ b/modules/shapes/index.js
@@ -0,0 +1,6 @@
+const Circle = require('./circle');
+const Rect = require('./rect');
+
+module.exports = {
+    Circle, Rect
+};
diff --git a/modules/shapes/package.json b/modules/shapes/package.json
new file mode 100644
index 0000000..c12bd3f
--- /dev/null
+++ b/modules/shapes/package.json
@@ -0,0 +1,4 @@
+{
+    "name": "shapes",
+    "main": "./index.js"
+}
diff --git a/modules/shapes/rect.js b/modules/shapes/rect.js
new file mode 100644
index 0000000..10353a0
--- /dev/null
+++ b/modules/shapes/rect.js
@@ -0,0 +1,12 @@
+class Rect {
+    constructor(a, b) {
+        this.a = a;
+        this.b = b;
+    }
+    get area() {
+        return a * b;
+    }
+}
+
+
+module.exports = Rect;