13512077 - Khoirunnisa Afifah

.gitignore

@@ -0,0 +1 @@
+node-modules/*

README.md

@@ -1,27 +1,20 @@
 # README for Service Adapter Assignment on IF4050 2015
 
-##Instruction
-1. Fork this repository https://github.com/if-itb/if4050-2015-ServiceAdapter.git
-2. Work on your fork --> commit --> push [as many as you want]
-3. [When you are done OR the deadline] create pull request  
-
-Each participnats should indicate clearly the following data:
- * NIM      = 1[35|82]+XXYYY
- * Name     = XXXXXXX
- * GithubID = YYYY
+ * NIM      = 13512077
+ * Name     = Khoirunnisa Afifah
+ * GithubID = afik
 
 Requreiments:
- * ....
- * ....
- * 
-
+ * nodejs & npm
+
 How to Deploy
- 1. .....
- 2. .....
- 3. .....
- 4. 
+ 1. Fork this repository
+ 2. Install dependency : `npm install`
+ 3. Run server : `node index.js`
 
 How to Run
- 1. .....
- 2. .....
+ 1. Make request at `localhost:3000/?ps=X&kode=Y&kelas=Z`
+ 	- X = study program code (ex.135)
+ 	- Y = course code (ex.IF4050)
+ 	- Z = class number (ex.01)
 

index.js

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+var express = require('express');
+var https = require("https");
+var cheerio = require("cheerio");
+
+var app = express();
+
+var base_url = "https://six.akademik.itb.ac.id/publik/";
+var sem = 1; 
+var th = 2015;
+var kur = 2013;
+var regPesertaKelas = /([0-9]{8})(.*)/g;
+var regAll = /(^(.*)$)\n.+Studi\s+:\s+(.*$)\n.+:\s(\d)\/(\d+)\n+.+:\s+(\w+)\s\/\s(.*),\s(\d).+\n.+:\s(\d+)\s\/\s(.*)(.|\n)*-\n.+=\s(.*)/m;
+var regNama = /\s{3}(.*$)/gm;
+
+var download = function (url, callback) {
+	https.get(url, function(res) {
+		var data = "";
+		res.on('data', function(chunk) {
+			data += chunk;
+		});
+		res.on("end", function() {
+			callback(data);
+		});
+	}).on("error", function() {
+		callback(null);
+	});
+}
+
+var server = app.listen(3000, function () {
+	var host = server.address().address;
+	var port = server.address().port;
+	console.log('App listening at http://%s:%s', host, port);
+});
+
+app.get('/', function (req, res) {
+	var ps = req.query.ps;
+	var kd = req.query.kode;
+	var kls = req.query.kelas;
+
+	if ((ps != null) && (kd != null) && (kls != null)) {
+		var url = base_url + "daftarkelas.php?ps=" + ps + "&semester=" + sem + "&tahun=" + th + "&th_kur=" + kur;
+
+		download(url, function(data) {
+			if (data) {
+				var $ = cheerio.load(data, {
+				    ignoreWhitespace: false,
+				    xmlMode: false,
+				    lowerCaseTags: false});
+				var ada = false;
+				var class_links = [];
+				$("ol > li").each(function(i, e) {
+		        	var mk = $(e).text();
+		        	if (mk.indexOf(kd) > -1) {
+		        		ada = true;
+
+		        		$(e).find("li>a").each(function(j, elem) {
+		        			class_links[j] = $(elem).attr("href");
+		        		});
+		        	}
+		      	});
+
+				if (kls > class_links.length/2) {
+					ada = false;
+					console.log("kelas ga ada");
+				}
+
+		      	if (!ada) {
+
+		      	 	console.log("kelas tidak ketemu");
+					var err = {
+						error : "Tidak ditemukan kelas dengan kode " + kd
+					};
+					res.status(404).send(JSON.stringify(err));
+		      	} else {
+		      	 	class_url = base_url + class_links[(kls*2)-2];
+		      	 	console.log(class_url);
+
+		      	 	var arr = [];
+		      	 	var arr2 = [];
+		      	 	var jsonArr = { };
+
+		      	 	download(class_url, function(data) {
+		      	 		if (data) {
+		      	 			$ = cheerio.load(data);
+		      	 			data = $("pre").text();
+
+		      	 			arr = data.match(regAll);
+		      	 			arr2 = data.match(regPesertaKelas);
+
+		      	 			if (arr.length == 0 || arr2.length == 0) {
+				      	 		console.log("error downloading1");
+								var error = {
+									error : "Terjadi kesalahan pada server"
+								};
+								res.status(500).send(JSON.stringify(error));	
+				      	 	} else {
+
+				      	 		jsonArr.fakultas = arr[1];
+				      	 		jsonArr.prodi = arr[3];
+				      	 		jsonArr.semester = arr[4];
+				      	 		jsonArr.tahun = "20" + arr[5];
+				      	 		jsonArr.kode = arr[6];
+				      	 		jsonArr.mata_kuliah = arr[7];
+				      	 		jsonArr.sks = arr[8];
+				      	 		jsonArr.kelas = arr[9];
+				      	 		jsonArr.dosen = arr[10];
+				      	 		jsonArr.jumlah_peserta = arr[12];
+
+				      	 		var peserta = [];
+
+				      	 		for (var i = 0; i< arr2.length; ++i) {
+				      	 			var item = arr2[i];
+				      	 			peserta.push ({
+				      	 				"nim" : item.split(/\s{3}/)[0],
+				      	 				"nama" : item.split(/\s{3}/)[1]
+				      	 			});
+				      	 		}
+
+				      	 		jsonArr.peserta = peserta;
+
+				      	 		res.status(200).send(JSON.stringify(jsonArr));
+				      	 	}
+		      	 		} else {
+		      	 			console.log("error downloading2");
+		      	 			var error = {
+								error : "Terjadi kesalahan pada server"
+							};
+							res.status(500).send(JSON.stringify(error));
+						}
+		      	 	});
+				}
+			} else {
+				console.log("error downloading1");
+				var error = {
+					error : "Terjadi kesalahan pada server"
+				};
+				res.status(500).send(JSON.stringify(error));
+			}
+		});
+	} else {
+		var error = {
+			error : "Request tidak sesuai format"
+		};
+		res.status(400).send(JSON.stringify(error));
+	}
+
+});
+
+app.use(function(err, req, res) {
+	console.error(err.stack);
+	var error = {
+		error : "Terjadi kesalahan pada server"
+	};
+	res.status(500).send(JSON.stringify(error));
+});

package.json

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+{
+  "name": "six-adapter",
+  "version": "1.0.0",
+  "description": "adapter to get current semester's DPK at six.akademik.itb.ac.id",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "afik",
+  "license": "ISC",
+  "dependencies": {
+    "cheerio": "^0.19.0",
+    "express": "^4.13.3"
+  }
+}