BAEL_3760-Introduction-to-Takes (#8767)

* Initial commit

* Intro to Takes

* Takes - code

* Code changes

* Takes - unit and integration test

* Takes - hit-refresh feature

* Takes - renamed hit-refresh to reload

* Takes - review changes

libraries-3/src/main/java/com/baeldung/takes/TakesApp.java

@@ -0,0 +1,42 @@
+package com.baeldung.takes;
+
+import java.io.IOException;
+import java.sql.SQLException;
+
+import org.takes.Response;
+import org.takes.facets.fallback.Fallback;
+import org.takes.facets.fallback.FbChain;
+import org.takes.facets.fallback.FbStatus;
+import org.takes.facets.fallback.RqFallback;
+import org.takes.facets.fallback.TkFallback;
+import org.takes.facets.fork.FkRegex;
+import org.takes.facets.fork.TkFork;
+import org.takes.http.Exit;
+import org.takes.http.FtBasic;
+import org.takes.misc.Opt;
+import org.takes.rs.RsText;
+
+public final class TakesApp {
+
+    public static void main(final String... args) throws IOException, SQLException {
+        new FtBasic(
+            new TkFallback(
+                new TkFork(
+                    new FkRegex("/", new TakesHelloWorld()),
+                    new FkRegex("/index", new TakesIndex()),
+                    new FkRegex("/contact", new TakesContact())
+                    ),
+                new FbChain(
+                    new FbStatus(404, new RsText("Page Not Found")),
+                    new FbStatus(405, new RsText("Method Not Allowed")),
+                    new Fallback() {
+                        @Override
+                        public Opt<Response> route(final RqFallback req) {
+                            return new Opt.Single<Response>(new RsText(req.throwable().getMessage()));
+                        }
+                    })
+                ), 6060
+            ).start(Exit.NEVER);
+    }
+
+}

libraries-3/src/main/java/com/baeldung/takes/TakesContact.java

@@ -0,0 +1,22 @@
+package com.baeldung.takes;
+
+import java.io.IOException;
+
+import org.takes.Request;
+import org.takes.Response;
+import org.takes.Take;
+import org.takes.rs.RsWithBody;
+import org.takes.rs.RsWithStatus;
+import org.takes.rs.RsWithType;
+
+public final class TakesContact implements Take {
+
+    @Override
+    public Response act(Request req) throws IOException {
+        return new RsWithStatus(
+            new RsWithType(
+                new RsWithBody("Contact us at https://www.baeldung.com"), 
+                "text/html"), 200);
+    } 
+
+}

libraries-3/src/main/java/com/baeldung/takes/TakesHelloWorld.java

@@ -0,0 +1,15 @@
+package com.baeldung.takes;
+
+import org.takes.Request;
+import org.takes.Response;
+import org.takes.Take;
+import org.takes.rs.RsText;
+
+public class TakesHelloWorld implements Take {
+    
+    @Override
+    public Response act(final Request request) {
+        return new RsText("Hello, world!");
+    }
+
+}

libraries-3/src/main/java/com/baeldung/takes/TakesIndex.java

@@ -0,0 +1,24 @@
+package com.baeldung.takes;
+
+import java.io.IOException;
+
+import org.takes.Request;
+import org.takes.Response;
+import org.takes.Take;
+import org.takes.rq.form.RqFormSmart;
+import org.takes.rs.RsHtml;
+import org.takes.rs.RsVelocity;
+
+public final class TakesIndex implements Take {
+
+    @Override
+    public Response act(final Request req) throws IOException {
+        RqFormSmart form = new RqFormSmart(req);
+        String username = form.single("username");
+        return new RsHtml(
+            new RsVelocity(this.getClass().getResource("/templates/index.vm"), 
+                new RsVelocity.Pair("username", username))
+            );
+    }
+
+}