1 files changed, 57 insertions, 1 deletions
diff --git a/juick-spring-www/src/main/java/com/juick/www/controllers/HelpController.java b/juick-spring-www/src/main/java/com/juick/www/controllers/HelpController.java
index dad3ff9f..49e24c8c 100644
--- a/juick-spring-www/src/main/java/com/juick/www/controllers/HelpController.java
+++ b/juick-spring-www/src/main/java/com/juick/www/controllers/HelpController.java
@@ -1,12 +1,68 @@
 package com.juick.www.controllers;
 
+import com.juick.User;
+import com.juick.server.util.HttpNotFoundException;
+import com.juick.service.UserService;
+import com.juick.util.UserUtils;
+import org.springframework.core.io.ClassPathResource;
 import org.springframework.stereotype.Controller;
+import org.springframework.ui.ModelMap;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 
+import javax.inject.Inject;
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.security.Principal;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
 /**
  * Created by aalexeev on 11/21/16.
  */
 @Controller
-@RequestMapping("/help")
 public class HelpController {
+    @Inject
+    UserService userService;
+
+    @RequestMapping({"/help", "/help/{lang}", "/help/{lang}/{page}"})
+    protected String doGetHelp(
+            Principal principal,
+            @PathVariable("lang") Optional<String> lang,
+            @PathVariable("page") Optional<String> page,
+            ModelMap model) throws IOException, URISyntaxException {
+        String name = UserUtils.getUsername(principal, null);
+        User visitor = userService.getUserByName(name);
+
+        lang.ifPresent(l -> {
+            if (l.length() != 2 || !l.matches("^[a-z]+$")) {
+                throw new HttpNotFoundException();
+            }
+        });
+        if (!lang.isPresent()) {
+            lang = Optional.of("ru");
+        }
+
+        page.ifPresent(p -> {
+            if (!p.matches("^[a-zA-Z0-9\\-]*$") || p.equals("navigation") || p.equals("index")) {
+                throw new HttpNotFoundException();
+            }
+        });
+        if (!page.isPresent()) {
+            page = Optional.of("index");
+        }
+
+        String filePath = "help/" + lang.get() + "/" + page.get();
+        String navigationPath = "help/" + lang.get() + "/navigation";
+
+        model.addAttribute("title", "Помощь");
+        model.addAttribute("visitor", visitor);
+        model.addAttribute("help_nav", Files.readAllLines(Paths.get(new ClassPathResource(navigationPath).getURI()))
+                .stream().collect(Collectors.joining()));
+        model.addAttribute("help_data", Files.readAllLines(Paths.get(new ClassPathResource(filePath).getURI()))
+                .stream().collect(Collectors.joining()));
+        return "views/help";
+    }
 }