added fronted class to display ui

src/main/java/fr/packageviewer/Main.java

@@ -1,84 +1,31 @@
 package fr.packageviewer;
 
 import java.util.List;
-import java.util.Scanner;
 
+import fr.packageviewer.frontend.Frontend;
+import fr.packageviewer.frontend.FrontendFactory;
 import fr.packageviewer.pack.SearchedPackage;
 
 public class Main {
 	public static void main(String[] args) {
+
+		// create the frontend : what the user will see in its terminal
+		Frontend frontend = FrontendFactory.get("terminal");
+
 		// send the command line arguments to the parser
 		ArgParse.parseArguments(args);
 		String packet = ArgParse.getPacket();
 		String distribution = ArgParse.getDistribution();
 
 		// we create an object to search the packages in the distribution
-		Searcher searcher;
-		if(distribution == null) {
-			searcher = new Searcher();
-		} else {
-			searcher = new Searcher(distribution);
-		}
+		Searcher searcher = new Searcher(distribution);
 
 		// we get the packages list
 		List<SearchedPackage> packets = searcher.searchPackages(packet);
 
-		// list all packages in reverse order
-		for (int i = packets.size(); i-- > 0; ) {
-			SearchedPackage searchedPacket = packets.get(i);
-			System.out.printf("%s - %s/%s/%s %s%n\t%s%n",
-							  i,
-							  searchedPacket.getDistribution(),
-							  searchedPacket.getRepo(),
-							  searchedPacket.getName(),
-							  searchedPacket.getVersion()==null?"":searchedPacket.getVersion(),
-							  searchedPacket.getDescription());
-		}
-
-		System.out.printf("Pick a package to see in details (0-%s) : %n", packets.size()-1);
-		Scanner input = new Scanner(System.in);
-
-		// we create vars for the loop
-		String packetNumberString;
-		int packetNumber;
-		boolean notValid;
-		// we ask input and check if the user input is correct
-		do {
-			packetNumberString = input.nextLine();
-			// reset notValid to false, we set it in true only if something is wrong
-			notValid = false;
-			if(isNumeric(packetNumberString)) {
-				packetNumber = Integer.parseInt(packetNumberString);
-				if(packetNumber < 0 || packetNumber >= packets.size()) {
-					// this number is too big or too small
-					System.out.println("Enter a valid number");
-					notValid = true;
-				}
-			} else {
-				// this is not a number
-				System.out.println("Enter a valid number");
-				notValid = true;
-			}
-		} while(notValid);
-
-		input.close();
+		// ask the user to select the package to see in details
+		SearchedPackage searchedPacket = frontend.askUserToChoosePackage(packets);
 
 
 	}
-
-
-	/**
-	 * Check if the String given is a number
-	 * @param i the String given
-	 * @return true if the String is a number
-	 * @author Capelier-Marla
-	 */
-	 private static boolean isNumeric(String i) {
-		try {
-			Integer.parseInt(i);
-			return true;
-		} catch (Exception e) {
-			return false;
-		}
-	}
 }

src/main/java/fr/packageviewer/Searcher.java

@@ -13,16 +13,10 @@ public class Searcher {
 
 	private String distributionName = null;
 
-	public Searcher() {}
-
 	public Searcher(String distributionName) {
 		this.distributionName = distributionName;
 	}
 
-	public void setDistribution(String distribution) {
-		this.distributionName = distribution;
-	}
-
 	/**
 	 * Get the list of all packages in the distribution setted before
 	 * @param packageName the name of the package wanted

src/main/java/fr/packageviewer/frontend/Frontend.java

@@ -0,0 +1,11 @@
+package fr.packageviewer.frontend;
+
+import java.util.List;
+
+import fr.packageviewer.pack.Package;
+import fr.packageviewer.pack.SearchedPackage;
+
+public interface Frontend {
+    SearchedPackage askUserToChoosePackage(List<SearchedPackage> packets);
+    void showPackageTree(Package packet);
+}

src/main/java/fr/packageviewer/frontend/FrontendFactory.java

@@ -0,0 +1,16 @@
+package fr.packageviewer.frontend;
+
+public class FrontendFactory {
+
+    public static Frontend get(String name){
+        switch(name){
+            case "terminal":{
+                return new FrontendTerminal();
+            }
+            default:{
+                throw new IllegalArgumentException("Invalid frontend");
+            }
+        }
+    }
+
+}

src/main/java/fr/packageviewer/frontend/FrontendTerminal.java

@@ -0,0 +1,76 @@
+package fr.packageviewer.frontend;
+
+import java.util.List;
+import java.util.Scanner;
+
+import fr.packageviewer.pack.Package;
+import fr.packageviewer.pack.SearchedPackage;
+
+public class FrontendTerminal implements Frontend{
+
+    /**
+	 * Check if the String given is a number
+	 * @param i the String given
+	 * @return true if the String is a number
+	 * @author Capelier-Marla
+	 */
+	 private static boolean isNumeric(String i) {
+		try {
+			Integer.parseInt(i);
+			return true;
+		} catch (Exception e) {
+			return false;
+		}
+	}
+
+    @Override
+    public SearchedPackage askUserToChoosePackage(List<SearchedPackage> packets) {
+        // list all packages in reverse order
+		for (int i = packets.size(); i-- > 0; ) {
+			SearchedPackage searchedPacket = packets.get(i);
+			System.out.printf("%s - %s/%s/%s %s%n\t%s%n",
+							  i,
+							  searchedPacket.getDistribution(),
+							  searchedPacket.getRepo(),
+							  searchedPacket.getName(),
+							  searchedPacket.getVersion()==null?"":searchedPacket.getVersion(),
+							  searchedPacket.getDescription());
+		}
+
+        System.out.printf("Pick a package to see in details (0-%s) : %n", packets.size()-1);
+		Scanner input = new Scanner(System.in);
+
+		// we create vars for the loop
+		String packetNumberString;
+		int packetNumber = -1;
+		boolean notValid;
+		// we ask input and check if the user input is correct
+		do {
+			packetNumberString = input.nextLine();
+			// reset notValid to false, we set it in true only if something is wrong
+			notValid = false;
+			if(isNumeric(packetNumberString)) {
+				packetNumber = Integer.parseInt(packetNumberString);
+				if(packetNumber < 0 || packetNumber >= packets.size()) {
+					// this number is too big or too small
+					System.out.println("Enter a valid number");
+					notValid = true;
+				}
+			} else {
+				// this is not a number
+				System.out.println("Enter a valid number");
+				notValid = true;
+			}
+		} while(notValid);
+
+		input.close();
+        return packets.get(packetNumber);
+    }
+
+    @Override
+    public void showPackageTree(Package packet) {
+        // TODO Auto-generated method stub
+
+    }
+
+}