Add chat input functionality in ChatBoxComponent and backend support for sending server messages

frontend/src/app/pages/altitude/chat/components/chat/chat-box.component.html

@@ -12,3 +12,15 @@
     </p>
   }
 </div>
+
+@if (canChat()) {
+  <div class="chat-input-container">
+    <input
+      type="text"
+      [(ngModel)]="chatText"
+      (keyup.enter)="sendMessage()"
+      placeholder="Type a message..."
+    />
+    <button (click)="sendMessage()">Send</button>
+  </div>
+}

frontend/src/app/pages/altitude/chat/components/chat/chat-box.component.scss

@@ -1,12 +1,14 @@
 :host {
-  display: block;
+  display: flex;
+  flex-direction: column;
   height: 100%;
 }
 
 .message-container {
+  flex: 1 1 auto;
   display: flex;
   flex-direction: column-reverse;
-  height: 100%;
+  min-height: 0;
   overflow-y: auto;
   box-sizing: border-box;
   scrollbar-width: thin;
@@ -41,3 +43,51 @@
 .date-time {
   color: gray;
 }
+
+.chat-input-container {
+  flex: 0 0 auto;
+  padding: 10px;
+  display: flex;
+  gap: 10px;
+  background: rgba(0, 0, 0, 0.2);
+  border-top: 1px solid rgba(255, 255, 255, 0.1);
+
+  input {
+    flex: 1 1 auto;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 4px;
+    padding: 8px 12px;
+    color: white;
+    outline: none;
+    font-size: 14px;
+
+    &:focus {
+      border-color: #4f8cff;
+      background: rgba(255, 255, 255, 0.1);
+    }
+
+    &::placeholder {
+      color: rgba(255, 255, 255, 0.3);
+    }
+  }
+
+  button {
+    cursor: pointer;
+    border: 0;
+    border-radius: 4px;
+    padding: 8px 16px;
+    background: #4f8cff;
+    color: #ffffff;
+    font-weight: 700;
+    transition: background 0.2s;
+
+    &:hover {
+      background: #3b7dff;
+    }
+
+    &:active {
+      background: #2a6ae0;
+    }
+  }
+}

frontend/src/app/pages/altitude/chat/components/chat/chat-box.component.ts

@@ -1,17 +1,63 @@
-import {Component, input} from '@angular/core';
+import {Component, computed, inject, input} from '@angular/core';
 import {DatePipe} from '@angular/common';
 import {ChatMessage} from '@pages/altitude/chat/objects/chat-message.object';
 import {MiniMessageComponent} from '@pages/altitude/chat/components/mini-message/mini-message.component';
+import {AuthService} from '@services/auth.service';
+import {ChatService} from '@pages/altitude/chat/service/chat.service';
+import {ServerMessageService} from '@api';
+import {FormsModule} from '@angular/forms';
+import {MatSnackBar} from '@angular/material/snack-bar';
 
 @Component({
   selector: 'app-chat-box',
+  standalone: true,
   imports: [
     MiniMessageComponent,
-    DatePipe
+    DatePipe,
+    FormsModule
   ],
   templateUrl: './chat-box.component.html',
   styleUrl: './chat-box.component.scss'
 })
 export class ChatBoxComponent {
+  private readonly authService = inject(AuthService);
+  private readonly chatService = inject(ChatService);
+  private readonly serverMessageService = inject(ServerMessageService);
+  private readonly matSnackBar = inject(MatSnackBar);
+
   readonly messages = input.required<ChatMessage[]>();
+  chatText = '';
+
+  readonly canChat = computed(() => {
+    const hasPrivilege = this.authService.hasAccess(['SCOPE_head_mod']);
+    const isServerChannel = this.chatService.selectedChannel()?.type === 'SERVER';
+    if (!hasPrivilege || !isServerChannel) {
+      console.log(`User has privilege ${hasPrivilege}, user in server channel ${isServerChannel}`);
+    }
+    return hasPrivilege && isServerChannel;
+  });
+
+  sendMessage() {
+    const message = this.chatText.trim();
+    if (!message) return;
+
+    const selectedChannel = this.chatService.selectedChannel();
+    const uuid = this.authService.getUuid();
+
+    if (selectedChannel?.type === 'SERVER' && uuid) {
+      this.serverMessageService.sendServerMessage(selectedChannel.name, {
+        uuid,
+        message
+      }).subscribe({
+        next: () => {
+          this.chatText = '';
+        },
+        error: (err) => {
+          this.matSnackBar.open('Failed to send message', 'Dismiss', {
+            duration: 3000
+          });
+        }
+      });
+    }
+  }
 }