Extract sape code into ControllerAdvice

1 files changed, 87 insertions, 0 deletions

diff --git a/src/main/java/com/juick/www/filters/AnythingFilter.java b/src/main/java/com/juick/www/filters/AnythingFilter.java
new file mode 100644
index 00000000..8f9af7f6
--- /dev/null
+++ b/src/main/java/com/juick/www/filters/AnythingFilter.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2008-2019, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.www.filters;
+
+import com.juick.model.User;
+import com.juick.server.util.WebUtils;
+import com.juick.service.MessagesService;
+import com.juick.service.UserService;
+import org.apache.commons.lang3.math.NumberUtils;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
+import org.springframework.web.util.UriComponents;
+
+import javax.annotation.Nonnull;
+import javax.inject.Inject;
+import javax.servlet.*;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+@Component
+public class AnythingFilter extends OncePerRequestFilter {
+    @Inject
+    private MessagesService messagesService;
+    @Inject
+    private UserService userService;
+
+    @Override
+    public void doFilterInternal(@Nonnull HttpServletRequest servletRequest,
+                                 @Nonnull HttpServletResponse servletResponse,
+                                 @Nonnull FilterChain filterChain) throws IOException, ServletException {
+        String upgrade = servletRequest.getHeader("Connection");
+        if (upgrade != null && upgrade.equals("Upgrade")) {
+            filterChain.doFilter(servletRequest, servletResponse);
+            return;
+        }
+        UriComponents components = ServletUriComponentsBuilder.fromCurrentRequestUri().build();
+        String anything = components.getPath().substring(1);
+        int before = NumberUtils.toInt(components.getQueryParams().getFirst("before"), 0);
+        if (before == 0) {
+            boolean isPostNumber = WebUtils.isPostNumber(anything);
+            int messageId = isPostNumber ?
+                    NumberUtils.toInt(anything) : 0;
+
+            if (isPostNumber && anything.equals(Integer.toString(messageId))) {
+                if (messageId > 0) {
+                    User author = messagesService.getMessageAuthor(messageId);
+
+                    if (author != null) {
+                        servletResponse.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
+                        servletResponse.setHeader("Location", "/" + author.getName() + "/" + anything);
+                        return;
+                    }
+                }
+            }
+            User user = userService.getUserByName(anything);
+            if (user.getUid() > 0) {
+                servletResponse.sendRedirect("/" + user.getName() + "/");
+            } else {
+                filterChain.doFilter(servletRequest, servletResponse);
+            }
+        } else {
+            User user = userService.getUserByName(anything);
+            if (!user.isAnonymous()) {
+                servletResponse.sendRedirect("/" + user.getName() + "/?before=" + before);
+            } else {
+                filterChain.doFilter(servletRequest, servletResponse);
+            }
+        }
+    }
+}