Initial commit

src/main/java/xyz/thastertyn/Jecna/Dochazka.java

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+package xyz.thastertyn.Jecna;
+
+import java.io.IOException;
+import java.util.HashMap;
+
+import org.jsoup.nodes.Document;
+
+import xyz.thastertyn.Connection;
+import xyz.thastertyn.Tuple.Pair;
+
+public class Dochazka {
+	
+	private HashMap<String, Pair<String, String>> absence = new HashMap<>();
+
+	public byte downloadAbsence(String JSESSIOND)
+	{
+		Document absenceDoc;
+
+		try {
+			// absence-list
+			absenceDoc = Connection.getConnection()
+			.cookie("JSESSIOND", JSESSIOND)
+			.url("https://www.spsejecna.cz" + "/absence/passing-student")
+			.get();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+
+		return 0;
+	}
+}

src/main/java/xyz/thastertyn/Jecna/Downloader.java

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+package xyz.thastertyn.Jecna;
+
+import org.jsoup.Connection;
+import org.jsoup.Jsoup;
+
+public class Downloader {
+
+	public static Connection download(String url, String Jsessionid)
+	{
+		return Jsoup.connect(url)
+		.header("Connection", "keep-alive")
+		.cookie("role", "student")
+		.cookie("JSESSIONID", Jsessionid);
+	}
+}

src/main/java/xyz/thastertyn/Jecna/Login.java

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+package xyz.thastertyn.Jecna;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.UnknownHostException;
+
+import org.jsoup.Connection;
+import org.jsoup.Jsoup;
+import org.jsoup.Connection.Method;
+
+public class Login {
+
+	private String Jsessionid = null;
+
+	// Check for session expiration
+	private long start;
+	private long lastCheck;
+
+	/**
+	 * Zkontroluje zda jiz neexistuji ulozene udaje na systemu
+	 * @return <ul>
+	 * <li> {@code true} soubor existuje a neni prazdny </li>
+	 * <li> {@code false} neexistuje, nebo jsou prazdne </li>
+	 * </ul>
+	 */
+	public boolean getCredentials()
+	{
+		File credentials = null;
+
+		if(System.getProperty("os.name").equals("Linux"))
+		{
+			credentials = new File("~/.local/share/jecnak/credentials.json");
+
+		}else if(System.getProperty("os.name").contains("Windows"))
+		{
+			credentials = new File(System.getenv("APPDATA\\jecnak\\"));
+		}
+
+		if(!credentials.exists() || credentials.length() == 0) 
+		{
+			return false;
+		}
+		return true;
+	}
+
+	public String getJSESSIONID()
+	{
+		return Jsessionid;
+	}
+
+	public byte login(String user, String pass)
+	{
+		try {
+			//#region JSESSIONID
+			Connection.Response response = Jsoup.connect("https://www.spsejecna.cz")
+			.header("Connection", "keep-alive")
+			.method(Method.HEAD)
+			.execute();
+
+			Jsessionid = response.cookie("JSESSIONID");
+			//#endregion
+
+			//#region Token3
+			String token3 = Jsoup.connect("https://www.spsejecna.cz/user/role?role=student")
+			.header("Connection", "keep-alive")
+			.cookie("JSESSIONID", Jsessionid)
+			.get()
+			.select("input[name=token3]")
+			.attr("value");
+			//#endregion
+
+			//#region Login
+			Connection.Response login = Jsoup.connect("https://www.spsejecna.cz/user/login")
+			.method(Connection.Method.POST)
+			.header("Content-Type", "application/x-www-form-urlencoded")
+			//.header("Content-Length", "71") Adds 10 seconds to total request time
+			.header("Origin", "https://www.spsejecna.cz")
+			.header("Connection", "keep-alive")
+			.cookie("JSESSIONID", Jsessionid)
+			.cookie("role", "student")
+			.data("token3", token3)
+			.data("user", user)
+			.data("pass", pass)
+			.data("submit", "P%C5%99ihl%C3%A1sit+se")
+			.followRedirects(true)
+			.execute();
+			//#endregion
+
+			start = System.currentTimeMillis() / 1000L;
+			lastCheck = start;
+
+			return 0;
+		} catch(UnknownHostException e)
+		{
+			// Not connected to internet
+			return 127;
+		} catch(IOException e)
+		{
+			return 126;
+		}
+	}
+}

src/main/java/xyz/thastertyn/Jecna/Rozvrh.java

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+package xyz.thastertyn.Jecna;
+
+import java.io.IOException;
+import java.net.UnknownHostException;
+import java.util.HashSet;
+
+import org.jsoup.nodes.Document;
+import org.jsoup.select.Elements;
+
+/**
+ * Jeden radek v rozvrhu
+ */
+public class Rozvrh {
+	
+	private String[][] rozvrh = new String[5][10];
+	int pos = 0;
+
+
+	public void setPredmet(String pr, int d, int i)
+	{
+		rozvrh[d][i] = pr;
+	}
+
+	public String[][] getRozvrh()
+	{
+		return rozvrh;
+	}
+
+	@Override
+	public String toString()
+	{
+		String s = "";
+		for(String[] st : rozvrh)
+		{
+			s += ("| ");
+			for(String str : st)
+			{
+				s += String.format("%-5s", str) + " | ";
+			}
+			s += "\n";
+		}
+
+		return s;
+	}
+
+	/**
+	 * Stahne rozvrh z www.spsejecna.cz a dale ho zpracuje do formy
+	 * se kterou da pracovat
+	 * @param Jsessionid ze stranek
+	 * @return Status code
+	 * <newline>
+	 * <ul>
+	 * <li> 0 - Operace probehla bez problemu</li>
+	 * </ul>
+	 * @throws UnknownHostException kdyz neni pripojeni k internetu
+	 * @throws IOException ostatni exceptiony nejsou dulezite, tak jsou zahrnuty v jednom
+	 */
+	public void downloadRozvrh(final String Jsessionid) throws UnknownHostException, IOException
+	{
+		Document rozvrhDoc = Downloader.download("https://www.spsejecna.cz" + "/timetable/class", Jsessionid).get();
+
+		Elements rozvrhTable = rozvrhDoc.select("table.timetable").select("tr");
+		Elements[] rozvrhDny = new Elements[rozvrhTable.size()];
+
+		for(int i = 0; i < rozvrhTable.size(); i++)
+		{
+			rozvrhDny[i] =  rozvrhTable.get(i).children();
+		}
+
+		for(int i = 1; i < 6; i++)
+		{
+			for(int j = 1; j < 11; j++)
+			{
+				String predmet = rozvrhDny[i].get(j).select("span.subject").text().replaceAll(" ", "/");
+
+				// Predmety jako CEL jsou trikrat, staci ale jen jednou
+				// V hashsetu se neopakuji prvky
+				HashSet<String> set = new HashSet<>();
+				String[] split = predmet.split("/");
+
+				for(String s : split)
+				{
+					set.add(s);
+				}
+
+				String pr = "";
+
+				if(set.size() > 1)
+				{
+					for(String s : set)
+					{
+						pr += s + "/";
+					}
+					pr = pr.substring(0, pr.length() - 1);
+				}else{
+					for(String s : set) { pr = s; break; }
+				}
+				
+				rozvrh[i-1][j-1] = pr;
+			}
+		}
+	}
+}

src/main/java/xyz/thastertyn/Jecna/Znamky.java

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+package xyz.thastertyn.Jecna;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.select.Elements;
+
+import xyz.thastertyn.Tuple.Pair;
+
+public class Znamky {
+
+	private boolean wasDownloaded;
+
+	// key (String) reprezentuje predmet, value (arraylist) znamky a pair znamku s jeji vahou
+	private HashMap<String, ArrayList<Pair<Integer, Double>>> grades = new HashMap<>();
+
+	public void addGrade(String subject, int grade, double weight)
+	{
+		grades.get(subject).add(new Pair<Integer,Double>(grade, weight));
+	}
+
+	public void addSubject(String subject)
+	{
+		grades.put(subject, new ArrayList<Pair<Integer, Double>>());
+	}
+
+	private double getAverage(ArrayList<Pair<Integer, Double>> a)
+	{
+		try{
+			int divident = 0;
+			int divisor = 0;
+			for(Pair<Integer, Double> p : a)
+			{
+				divident += p.getValue0() * p.getValue1();
+				divisor += p.getValue1();
+			}
+
+			return (double) divident / divisor;
+
+		}catch(ArithmeticException e)
+		{
+			return 0;
+		}
+	}
+
+	public byte downloadZnamky(final String Jsessionid)
+	{
+		wasDownloaded = true;
+		Document znamkyDoc = null;
+
+		try {
+			znamkyDoc = Downloader.download("https://www.spsejecna.cz" + "/score/student", Jsessionid).get();
+		} catch (IOException e) {
+			e.printStackTrace();
+			return 127;
+		}
+		
+		Elements rows = znamkyDoc.select("table.score").select("tr");
+
+		Elements[] rows_split = new Elements[rows.size()];
+
+		for (int i = 0; i < rows.size(); i++)
+		{
+			rows_split[i] = rows.get(i).children();
+		}
+
+		for(int i = 1; i < rows_split.length; i++)
+		{
+			String predmet = rows_split[i].get(0).text();
+			addSubject(predmet);
+			
+			for(Element e : rows_split[i].get(1).select("a.score"))
+			{
+				int znamka = Integer.parseInt(e.select("span.value").text());
+
+				// Mala znamka se bude pocitat jako polovicni vaha
+				if(e.hasClass("scoreSmall"))
+				{
+					addGrade(predmet, znamka, 0.5);
+				}else{
+					addGrade(predmet, znamka, 1);
+				}
+			}
+		}
+		return 0;
+	}
+
+	@Override
+	public String toString()
+	{
+		if(wasDownloaded)
+		{
+			String s = "";
+	
+			for(Map.Entry<String, ArrayList<Pair<Integer, Double>>> entry : grades.entrySet())
+			{
+				double prumer = getAverage(entry.getValue());
+				double p = (double) Math.round(prumer * 100) / 100;
+				s += entry.getKey() + " | " + entry.getValue().toString() + " { " + p + " }\n";
+			}
+			return s;
+		}else{
+			return "Nothing was downloaded";
+		}
+
+	}
+}