added fromtpage

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>org.example</groupId>
     <artifactId>Widerhall</artifactId>
-    <version>0.0.8</version>
+    <version>0.0.9</version>
     <build>
         <plugins>
             <plugin>

src/main/java/de/srsoftware/widerhall/Application.java

@@ -1,5 +1,6 @@
 package de.srsoftware.widerhall;
 
+import de.srsoftware.widerhall.web.Front;
 import de.srsoftware.widerhall.web.Rest;
 import de.srsoftware.widerhall.web.Web;
 import org.eclipse.jetty.server.Connector;
@@ -34,6 +35,7 @@ public class Application {
         ServletContextHandler context = new ServletContextHandler(server, "/",sh,null,null,null);
         context.addServlet(Rest.class,"/api/*");
         context.addServlet(Web.class,"/web/*");
+        context.addServlet(Front.class,"/*");
 
         server.start();
     }

src/main/java/de/srsoftware/widerhall/web/Front.java

@@ -0,0 +1,19 @@
+package de.srsoftware.widerhall.web;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.Map;
+
+public class Front extends TemplateServlet {
+
+    private static final String FRONT = "frontpage";
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
+        loadTemplates();
+        String error = loadTemplate(FRONT, Map.of(),resp);
+        if (error != null) resp.sendError(400,error);
+    }
+}

src/main/java/de/srsoftware/widerhall/web/TemplateServlet.java

@@ -0,0 +1,57 @@
+package de.srsoftware.widerhall.web;
+
+import de.srsoftware.widerhall.Configuration;
+import org.stringtemplate.v4.STGroup;
+import org.stringtemplate.v4.STRawGroupDir;
+
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletResponse;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.Map;
+
+import static de.srsoftware.widerhall.Util.t;
+
+public abstract class TemplateServlet extends HttpServlet {
+    private STGroup templates;
+    private final String baseDir;
+
+    public TemplateServlet(){
+        var config = Configuration.instance();
+        baseDir = config.baseDir();
+        loadTemplates();
+    }
+
+    protected String loadFile(String filename, HttpServletResponse resp) {
+        var path = String.join(File.separator,baseDir,"static",filename);
+        var file = new File(path);
+        if (!file.exists()) return t("File {} does not exist!",filename);
+        try {
+            var content = Files.readString(file.toPath());
+            resp.getWriter().println(content);
+        } catch (IOException e) {
+            return t("Failed to load file '{}'!",filename);
+        }
+        return null;
+    }
+
+    protected String loadTemplate(String path, Map<String, ? extends Object> data, HttpServletResponse resp) {
+        var template = templates.getInstanceOf(path);
+        if (template != null){
+            try {
+                template.add("data",data);
+                resp.getWriter().println(template.render());
+                return null;
+            } catch (IOException e) {
+                return t("Failed to load template '{}'",path);
+            }
+        }
+        return t("No template for path '{}'!",path);
+    }
+
+    protected void loadTemplates() {
+        var templateDir = String.join(File.separator,baseDir,"static","templates");
+        templates = new STRawGroupDir(templateDir,'«','»');
+    }
+}

src/main/java/de/srsoftware/widerhall/web/Web.java

@@ -28,7 +28,8 @@ import java.util.Map;
 import static de.srsoftware.widerhall.Constants.*;
 import static de.srsoftware.widerhall.Util.t;
 
-public class Web extends HttpServlet {
+public class Web extends TemplateServlet {
+    public static final String WEB_ROOT = "/web";
     private static final String ADD_LIST = "add_list";
     private static final String CONFIRM = "confirm";
     private static final Logger LOG = LoggerFactory.getLogger(Web.class);
@@ -48,15 +49,6 @@ public class Web extends HttpServlet {
     private static final String SMTP_USER = "smtp_user";
     private static final String SMTP_PASS = "smtp_pass";
     private static final int PRIMARY_KEY_CONSTRAINT = 19;
-    private final String baseDir;
-    private STGroup templates;
-    private static final String WEB_ROOT = "/web";
-
-    public Web(){
-        var config = Configuration.instance();
-        baseDir = config.baseDir();
-        loadTemplates();
-    }
 
     private String addList(HttpServletRequest req, HttpServletResponse resp) {
 
@@ -154,7 +146,6 @@ public class Web extends HttpServlet {
         }
     }
 
-
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
         String error = handleGet(req, resp);
@@ -181,12 +172,13 @@ public class Web extends HttpServlet {
     }
 
     private String handleGet(HttpServletRequest req, HttpServletResponse resp) {
+        var path = req.getPathInfo();
+        if (path == null) return redirectTo(INDEX,resp);
         var o = req.getSession().getAttribute("user");
         User user = o instanceof User ? (User) o : null;
         var data = new HashMap<String,Object>();
         if (user != null) data.put(USER,user.safeMap());
-        var path = req.getPathInfo();
-        path = (path == null || path.equals("/")) ? INDEX : path.substring(1);
+        path = path.equals("/") ? INDEX : path.substring(1);
         String notes = null;
         var listEmail = req.getParameter(LIST);
         var list = MailingList.load(listEmail);
@@ -276,37 +268,9 @@ public class Web extends HttpServlet {
         return t("No handler for path {}!",path);
     }
 
-    private String loadFile(String filename, HttpServletResponse resp) {
-        var path = String.join(File.separator,baseDir,"static",filename);
-        var file = new File(path);
-        if (!file.exists()) return t("File {} does not exist!",filename);
-        try {
-            var content = Files.readString(file.toPath());
-            resp.getWriter().println(content);
-        } catch (IOException e) {
-            return t("Failed to load file '{}'!",filename);
-        }
-        return null;
-    }
 
-    private String loadTemplate(String path, Map<String, ? extends Object> data, HttpServletResponse resp) {
-        var template = templates.getInstanceOf(path);
-        if (template != null){
-            try {
-                template.add("data",data);
-                resp.getWriter().println(template.render());
-                return null;
-            } catch (IOException e) {
-                return t("Failed to load template '{}'",path);
-            }
-        }
-        return t("No template for path '{}'!",path);
-    }
 
-    private void loadTemplates() {
-        var templateDir = String.join(File.separator,baseDir,"static","templates");
-        templates = new STRawGroupDir(templateDir,'«','»');
-    }
+
 
     private String redirectTo(String page, HttpServletResponse resp) {
         try {

static/templates/frontpage.st

@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="utf-8" />
+        <link rel="stylesheet" href="css" />
+    </head>
+    <body id="login">
+        <h1>Widerhall front page</h1>
+        If you are looking for you mailing lists, <a href="web/index">Go to the /web page</a>...
+        <fieldset>
+            <legend>What is <em>Widerhall</em>?</legend>
+            <p>
+            Widerhall is a mailing list system written in Java.
+            It allows to maintain a set of mailing lists with the option to make (some of) them publicy subscribable.
+            </p>
+            <p>
+            <em>Widerhall</em> is very lightweight, as does not include a full email server stack.
+            </p>
+        </fieldset>
+        <fieldset>
+            <legend>Why should I use <em>Widerhall</em>?</legend>
+            <p>
+            Compared to other mailing list systems, widerhall is very lightweight:
+            <p>
+            It contains not mailserver stack. It does not even require you to set up a mailserver!
+            </p>
+        </fieldset>
+        <fieldset>
+            <legend>How does it work?</legend>
+            <p>
+            Widerhall works by just letting you set up any IMAP/SMTP enabled email address with a provider of your choice.
+            It then connects to the inbox of you selected email address and watches for incoming messages.
+            Upon message reception, it forwards the message to all subscribers of the mailing list.
+            </p>
+            <p>
+            That's it.
+            </p>
+        </fieldset>
+    </body>
+</html>