working on slimmer implementation

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.oidc.api/User.java

@@ -1,4 +0,0 @@
-package de.srsoftware.oidc.api;
-
-public class User {
-}

de.srsoftware.oidc.api/src/main/java/de/srsoftware/oidc/api/PathHandler.java

@@ -0,0 +1,31 @@
+/* © SRSoftware 2024 */
+package de.srsoftware.oidc.api;
+
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
+
+public abstract class PathHandler implements HttpHandler {
+	private String path;
+
+	public class Bond {
+		Bond(String p) {
+			path = p;
+		}
+		public HttpServer on(HttpServer server) {
+			server.createContext(path, PathHandler.this);
+			return server;
+		}
+	}
+
+	public Bond bindPath(String path) {
+		return new Bond(path);
+	}
+
+	public String relativePath(HttpExchange ex) {
+		var path = ex.getRequestURI().toString();
+		if (path.startsWith(this.path)) path = path.substring(this.path.length());
+		if (path.startsWith("/")) path = path.substring(1);
+		return path;
+	}
+}

de.srsoftware.oidc.server/build.gradle

@@ -12,9 +12,8 @@ repositories {
 dependencies {
     testImplementation platform('org.junit:junit-bom:5.10.0')
     testImplementation 'org.junit.jupiter:junit-jupiter'
-    implementation 'org.eclipse.jetty:jetty-server:11.0.14'
-    implementation 'org.eclipse.jetty:jetty-webapp:11.0.22'
-    implementation project(':de.srsoftware.oidc.light')
+    implementation project(':de.srsoftware.oidc.web')
+    implementation project(':de.srsoftware.oidc.api')
 }
 
 test {

de.srsoftware.oidc.server/src/main/java/de/srsoftware/oidc/server/Application.java

@@ -1,22 +1,18 @@
 /* © SRSoftware 2024 */
 package de.srsoftware.oidc.server;
 
-import de.srsoftware.oidc.light.LightOICD;
-import org.eclipse.jetty.server.Server;
-import org.eclipse.jetty.servlet.ServletContextHandler;
 
-public class Application {
-	private static Server webserver;
+import com.sun.net.httpserver.HttpServer;
+import de.srsoftware.oidc.web.StaticPages;
+import java.net.InetSocketAddress;
+import java.util.concurrent.Executors;
 
+public class Application {
 	public static void main(String[] args) throws Exception {
-		webserver = new Server(8080);
-
-		ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
-		context.setContextPath("/web");
-		context.addServlet(LightOICD.class, "/");
-
-		webserver.setHandler(context);
-		webserver.start();
-		webserver.join();
+		HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
+		new StaticPages().bindPath("/static").on(server);
+		new LanguageDirector("/static").bindPath("/").on(server);
+		server.setExecutor(Executors.newCachedThreadPool());
+		server.start();
 	}
 }

de.srsoftware.oidc.server/src/main/java/de/srsoftware/oidc/server/LanguageDirector.java

@@ -0,0 +1,27 @@
+/* © SRSoftware 2024 */
+package de.srsoftware.oidc.server;
+
+import com.sun.net.httpserver.Headers;
+import com.sun.net.httpserver.HttpExchange;
+import de.srsoftware.oidc.api.PathHandler;
+import java.io.IOException;
+import java.util.Arrays;
+
+public class LanguageDirector extends PathHandler {
+	private static final String DEFAULT_LANG = "de";
+	private final String        path;
+
+	public LanguageDirector(String pathTo) {
+		path = pathTo;
+	}
+
+	@Override
+	public void handle(HttpExchange t) throws IOException {
+		Headers headers = t.getRequestHeaders();
+		String  lang	= headers.get("Accept-Language").stream().flatMap(s -> Arrays.stream(s.split(","))).findFirst().orElse(DEFAULT_LANG);
+
+		t.getResponseHeaders().add("Location", String.join(lang, "/static/", "/de/index.html"));
+		t.sendResponseHeaders(301, 0);
+		t.getResponseBody().close();
+	}
+}

de.srsoftware.oidc.web/build.gradle

@@ -0,0 +1,20 @@
+plugins {
+    id 'java'
+}
+
+group = 'de.srsoftware'
+version = '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation platform('org.junit:junit-bom:5.10.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+    implementation project(':de.srsoftware.oidc.api')
+}
+
+test {
+    useJUnitPlatform()
+}

de.srsoftware.oidc.web/src/main/java/de/srsoftware/oidc/web/StaticPages.java

@@ -0,0 +1,53 @@
+/* © SRSoftware 2024 */
+package de.srsoftware.oidc.web;
+
+import com.sun.net.httpserver.HttpExchange;
+import de.srsoftware.oidc.api.PathHandler;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Optional;
+
+public class StaticPages extends PathHandler {
+	private static final String DEFAULT_LANG = "en";
+	private ClassLoader         loader;
+
+	private record Response(String contentType, byte[] content) {
+	}
+	private static final String INDEX = "de/index.html";
+
+	@Override
+	public void handle(HttpExchange ex) throws IOException {
+		String path = relativePath(ex);
+		if (path.isBlank()) path = INDEX;
+		try {
+			var response = loadTemplate(path).orElseThrow(() -> new FileNotFoundException());
+
+			ex.getResponseHeaders().add("Content-Type", response.contentType);
+			ex.sendResponseHeaders(200, response.content.length);
+			OutputStream os = ex.getResponseBody();
+			os.write(response.content);
+			os.close();
+		} catch (FileNotFoundException fnf) {
+			ex.sendResponseHeaders(404, 0);
+			ex.getResponseBody().close();
+		}
+	}
+
+	private Optional<Response> loadTemplate(String path) throws IOException {
+		if (loader == null) loader = getClass().getClassLoader();
+		var resource = loader.getResource(path);
+		if (resource == null) {
+			var parts = path.split("/");
+			parts[0]  = DEFAULT_LANG;
+			path      = String.join("/", parts);
+			resource  = loader.getResource(path);
+		}
+		if (resource == null) return Optional.empty();
+		var connection	= resource.openConnection();
+		var contentType = connection.getContentType();
+		try (var in = connection.getInputStream()) {
+			return Optional.of(new Response(contentType, in.readAllBytes()));
+		}
+	}
+}

de.srsoftware.oidc.web/src/main/resources/en/index.html

@@ -0,0 +1,9 @@
+<html>
+    <head>
+        <title>{title}</title>
+        <script src="lightoidc.js" />
+    </head>
+    <body>
+        {body}
+    </body>
+</html>

settings.gradle

@@ -2,4 +2,5 @@ rootProject.name = 'LightOIDC'
 include 'de.srsoftware.oidc.api'
 include 'de.srsoftware.oidc.light'
 include 'de.srsoftware.oidc.server'
+include 'de.srsoftware.oidc.web'