preparing svelte login, mastered translations

user/src/main/java/de/srsoftware/umbrella/user/UserModule.java

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+/* © SRSoftware 2025 */
+package de.srsoftware.umbrella.user;
+
+import com.sun.net.httpserver.HttpExchange;
+import de.srsoftware.tools.MimeType;
+import de.srsoftware.tools.Path;
+import de.srsoftware.tools.PathHandler;
+import de.srsoftware.tools.SessionToken;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.util.Map;
+import java.util.UUID;
+
+import static de.srsoftware.tools.MimeType.MIME_JSON;
+
+
+public class UserModule extends PathHandler {
+
+	private HttpExchange addCors(HttpExchange ex){
+		var headers = ex.getResponseHeaders();
+		headers.add("Allow-Origin","*");
+		headers.add("Access-Control-Allow-Origin","*");
+		headers.add("Access-Control-Allow-Headers","Content-Type");
+		return ex;
+	}
+
+	@Override
+	public boolean doOptions(Path path, HttpExchange ex) throws IOException {
+		return sendEmptyResponse(200,addCors(ex));
+	}
+
+	@Override
+	public boolean doPost(Path path, HttpExchange ex) throws IOException {
+		addCors(ex);
+		var p = path.toString();
+		switch (p){
+			case "login": return postLogin(ex);
+		}
+		return super.doPost(path, ex);
+	}
+
+	private boolean postLogin(HttpExchange ex) throws IOException {
+		var json = json(ex);
+		if (!(json.has("username") && json.get("username") instanceof String username)) return sendContent(ex,402,"Username missing");
+		if (!(json.has("password") && json.get("password") instanceof String password)) return sendContent(ex,402,"Password missing");
+
+		if (!username.equals(password)) return sendContent(ex,401,"Login failed");
+		var sessionId = UUID.randomUUID().toString();
+		new SessionToken(sessionId).addTo(ex);
+		ex.getResponseHeaders().add("Content-Type", MIME_JSON);
+		return sendContent(ex,200,new JSONObject(Map.of("username",username)).toString());
+	}
+}