Initial version with functionality to log into the component using frontend

src/site/views/clubs/tmpl/default.php

@@ -0,0 +1,7 @@
+<?php
+
+// No direct access.
+defined('_JEXEC') or die;
+
+?>
+asd

src/site/views/clubs/view.html.php

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+<?php
+
+use Joomla\CMS\MVC\View\HtmlView;
+
+// No direct access.
+defined('_JEXEC') or die;
+
+class ClubsViewClubs extends HtmlView
+{
+}

src/site/views/login/tmpl/default.php

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+<?php
+use Joomla\CMS\Factory;
+
+if($this->state === "failed")
+{
+?>
+<p class='error'>Benutzername oder Passwort sind falsch.</p>
+<?php 
+}
+?>
+<form method="post" action="?option=com_clubs&task=login.login">
+<p>
+Username:<br />
+<input name="user" type="text">
+</p>
+<p>
+Passwort:<br />
+<input name="password" type="password">
+</p>
+<p><input type="checkbox" name='keep' value='true' <?php if(Factory::getApplication()->input->cookie->get('clubsLoginKeepLoggedIn','') === 'true') echo "checked";?>> Keep me logged in</p>
+<p><input type="submit" value="Einloggen"></p>
+</form>

src/site/views/login/tmpl/logout.php

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+<?php
+
+// No direct access.
+defined('_JEXEC') or die;
+
+?>
+<a href='?option=com_clubs&task=login.logout'>Logout</a>

src/site/views/login/view.html.php

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+<?php
+
+use Joomla\CMS\MVC\View\HtmlView;
+use Joomla\CMS\Factory;
+
+// No direct access.
+defined('_JEXEC') or die;
+
+JLoader::register("ClubsHelperAuth", JPATH_ROOT . "/components/com_clubs/helpers/auth.php");
+
+class ClubsViewLogin extends HtmlView
+{
+    
+    public function display($tpl = null)
+    {
+        $helper = new ClubsHelperAuth();
+        if($helper->checkCookie())
+        {
+            // we are logged in
+            $this->setLayout('logout');
+            parent::display(null);
+        }
+        else
+        {
+            $this->state = Factory::getApplication()->input->get("state", "");
+            parent::display($tpl);
+        }
+    }
+    
+}