chat endpoints

Author: Christopher Strauss

src/main/java/com/bernd/ChatController.java

@@ -0,0 +1,56 @@
+package com.bernd;
+
+import com.bernd.model.Chat;
+import com.bernd.model.ChatMessage;
+import com.bernd.model.ChatRequest;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import org.springframework.http.ResponseEntity;
+import org.springframework.messaging.core.MessageSendingOperations;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+public class ChatController {
+
+  private final Chats chats;
+  private final MessageSendingOperations<String> operations;
+
+  ChatController(
+      Chats chats,
+      MessageSendingOperations<String> operations) {
+    this.chats = chats;
+    this.operations = operations;
+  }
+
+  @ResponseBody
+  @GetMapping("/api/chat/{id}")
+  public Chat getChat(@PathVariable String id) {
+    return chats.get(id);
+  }
+
+  @PostMapping("/api/send_chat")
+  public ResponseEntity<?> sendChat(@RequestBody ChatRequest chatRequest) {
+    Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
+    String user = Objects.toString(principal);
+    ChatMessage message = new ChatMessage(chatRequest.message(), user);
+    Chat chat = chats.get(chatRequest.id());
+    if (chat != null) {
+      chat.messages().add(message);
+    } else {
+      List<ChatMessage> messages = new ArrayList<>();
+      messages.add(message);
+      chat = new Chat(chatRequest.id(), messages);
+    }
+    chats.put(chat);
+    operations.convertAndSend("/topic/chat/" + chat.id(), chat);
+    return ResponseEntity.ok().build();
+  }
+
+}

src/main/java/com/bernd/Chats.java

@@ -0,0 +1,25 @@
+package com.bernd;
+
+import com.bernd.model.Chat;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Chats {
+  private final Map<String, Chat> map = new LinkedHashMap<>();
+
+  Chat get(String id) {
+    return map.get(id);
+  }
+
+  Chat put(Chat chat) {
+    map.put(chat.id(), chat);
+    return chat;
+  }
+
+  List<Chat> chats() {
+    return List.copyOf(map.values());
+  }
+}

src/main/java/com/bernd/game/MoveList.java

@@ -16,14 +16,6 @@ public final class MoveList {
   private static final int PASS = 0x2000;
   private static final int DATA = 0x0fff;
 
-  public static void main(String[] args) {
-    int n = 1024 * 4;
-    System.out.printf("%x\n", n);
-    System.out.println(n);
-    System.out.printf("%x\n", 2 * n);
-    System.out.println(2 * n);
-  }
-
   private int pos;
   private int capacity;
   private final int dim;

src/main/java/com/bernd/model/Chat.java

@@ -0,0 +1,8 @@
+package com.bernd.model;
+
+import java.util.List;
+
+public record Chat(
+    String id,
+    List<ChatMessage> messages) {
+}

src/main/java/com/bernd/model/ChatMessage.java

@@ -0,0 +1,6 @@
+package com.bernd.model;
+
+public record ChatMessage(
+        String message,
+        String user) {
+}

src/main/java/com/bernd/model/ChatRequest.java

@@ -0,0 +1,6 @@
+package com.bernd.model;
+
+public record ChatRequest(
+        String message,
+        String id) {
+}