Extendable type area added and missed messages fixed

config.xml

@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='utf-8'?>
-<widget id="io.ionic.starter" version="1.3.0" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
+<widget id="io.ionic.starter" version="1.4.0" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
     <name>METAsocket</name>
-    <description>WowApp's awesome instant messenger</description>
+    <description>WowApp's awesome instant messenger for the whole Greifentanzgeschwader</description>
     <author email="webmaster@sabolli.de" href="https://sabolli.de/metasocket/">sabolli</author>
     <content src="index.html" />
     <access origin="*" />

src/app/chat.message.ts

@@ -5,4 +5,5 @@ export interface ChatMessage
     username: string;
     message: string;
     datetime: string;
+    htmlMessage: string;
 }

src/app/chat/chat.component.html

@@ -3,16 +3,19 @@
 
   <div #chatPostArea id="chat-post-area" (scroll)="onScroll()">
     <div *ngFor="let message of messages" class="chat-post" [class.chat-own-post]="userId === message.userId">
-      <img class="chat-avatar" src="{{url}}/user/{{message.userId}}/avatar?token={{userToken}}">
-      <div class="chat-message-area">
+      <img (click)="citeUsername(message.username)" class="chat-avatar" src="{{url}}/user/{{message.userId}}/avatar?token={{userToken}}">
+      <div class="chat-message-area" (click)="citeMessage(message.username, message.message)">
         <div class="chat-username">{{message.username}}</div>
-        <div class="chat-post-message">{{message.message}}</div>
+        <div [innerHTML]="message.htmlMessage" class="chat-post-message"></div>
         <div class="chat-datetime">{{message.datetime}}</div>
       </div>
     </div>
   </div>
 
-  <div id="chat-type-area">
-    <textarea [(ngModel)]="chatText" id="chat-textarea" (keydown)="onTextInput($event)" autofocus maxlength="2000"></textarea>
+  <div #chatTypeArea id="chat-type-area">
+    <div id="textarea-container">
+      <textarea #chatTextArea [(ngModel)]="chatText" (input)="onInput($event)" id="chat-textarea" autofocus maxlength="2000"></textarea>
+    </div>
+    <button #buttonSend class="button-send-offline" (click)="postMessage()" id="button-send"></button>
   </div>
 </div>

src/app/chat/chat.component.ts

@@ -22,10 +22,13 @@ export class ChatComponent implements OnInit, AfterViewInit, AfterViewChecked, W
   userToken: string;
   userId: number;
   url: string;
+  chatText: string;
 
   @ViewChild('chatPostArea') chatPostArea: ElementRef;
   @ViewChild('errorMessage') errorMessage: ElementRef;
-  chatText: string;
+  @ViewChild('chatTextArea') chatTextArea: ElementRef;
+  @ViewChild('chatTypeArea') chatTypeArea: ElementRef;
+  @ViewChild('buttonSend') buttonSend: ElementRef;
 
   private oldScrollHeight = 0;
   private messageOffset = 0;
@@ -82,6 +85,8 @@ export class ChatComponent implements OnInit, AfterViewInit, AfterViewChecked, W
         (response) => {
           response.forEach(
             (message: ChatMessage) => {
+              message.htmlMessage = this.parseHtml(message.message);
+
               this.messages.push(message);
               this.messageOffset++;
             }
@@ -116,35 +121,39 @@ export class ChatComponent implements OnInit, AfterViewInit, AfterViewChecked, W
     if (this.chatPostArea.nativeElement.scrollTop === 0) {
       this.apiService.getChatHistory(this.userToken, this.messageOffset, this.messageLimit).subscribe(
         (response) => {
-          this.messages = response.concat(this.messages);
-          this.messageOffset += this.messageLimit;
+          response.reverse();
+
+          response.forEach(
+            (message: ChatMessage) => {
+              message.htmlMessage = this.parseHtml(message.message);
+
+              this.messages = [message].concat(this.messages);
+              this.messageOffset++;
+            }
+          );
+
           this.hasBeenReloaded = true;
         }
       );
     }
   }
 
-  onTextInput(event: Event): void {
-    if (!(event instanceof KeyboardEvent)) {
-      return;
+  onInput(event): void {
+    this.chatTypeArea.nativeElement.style.height = '50px';
+    this.chatTypeArea.nativeElement.style.height = event.target.scrollHeight > 50 ? event.target.scrollHeight + 'px' : '50px';
+
+    if (this.chatTypeArea.nativeElement.clientHeight > window.innerHeight) {
+      this.chatTypeArea.nativeElement.style.height = window.innerHeight + 'px';
     }
+  }
 
-    switch (event.key) {
-      case 'Enter':
-        event.preventDefault();
-
-        if (this.chatText.trim() === '') {
-          return;
-        }
-
-        this.websocketService.sendChatMessage(this.chatText);
-        this.chatText = '';
-
+  postMessage(): void {
+      if (this.chatTextArea.nativeElement.value.trim() === '') {
         return;
+      }
 
-      default:
-        return;
-    }
+      this.websocketService.sendChatMessage(this.chatTextArea.nativeElement.value);
+      this.chatTextArea.nativeElement.value = '';
   }
 
   onLogout() {
@@ -154,10 +163,12 @@ export class ChatComponent implements OnInit, AfterViewInit, AfterViewChecked, W
   }
 
   onChatMessage(message: ChatMessage): void {
+    message.htmlMessage = this.parseHtml(message.message);
+
     this.messages.push(message);
     this.messageOffset++;
 
-    if (message.userId === this.userId) {
+    if (this.hasFocus || message.userId === this.userId) {
       return;
     }
 
@@ -168,21 +179,29 @@ export class ChatComponent implements OnInit, AfterViewInit, AfterViewChecked, W
   {
     this.errorMessage.nativeElement.style.display = 'none';
 
-    this.apiService.getChatMessagesMissed(this.userToken, this.messages[this.messages.length - 1].id).toPromise()
-      .then(
-        (messagesMissed) => {
-          if (messagesMissed.length === 0) {
-            return;
-          }
+    this.enableSendButton();
 
-          this.messages.concat(messagesMissed);
-          this.messageOffset += messagesMissed.length;
-        }
-      ).catch(
-      (error) => {
-        console.log('Failed to load messages missed after reconnect!', error);
-      }
-    );
+    if (this.isReconnection) {
+      this.apiService.getChatMessagesMissed(this.userToken, this.messages[this.messages.length - 1].id).toPromise()
+        .then(
+          (messagesMissed) => {
+            if (messagesMissed.length === 0) {
+              return;
+            }
+
+            for (const message of messagesMissed) {
+              message.htmlMessage = this.parseHtml(message.message);
+
+              this.messages.push(message);
+              this.messageOffset++;
+            }
+          }
+        ).catch(
+          (error) => {
+            console.log('Failed to load messages missed after reconnect!', error);
+          }
+      );
+    }
 
     this.isReconnection = true;
   }
@@ -196,6 +215,27 @@ export class ChatComponent implements OnInit, AfterViewInit, AfterViewChecked, W
   {
     this.errorMessage.nativeElement.style.display = 'block';
     this.errorMessage.nativeElement.innerText = message;
+    this.disableSendButton();
+  }
+
+  citeUsername(username: string): void
+  {
+    this.insertIntoTextareaCursorPosition('@' + username);
+  }
+
+  citeMessage(username: string, message: string): void
+  {
+    const originalMessage = [];
+
+    message.split('\n').forEach(
+      (paragraph: string) => {
+        if (paragraph.substr(0, 1) !== '>') {
+          originalMessage.push(paragraph);
+        }
+      }
+    );
+
+    this.insertIntoTextareaCursorPosition('> @' + username + ': ' +  originalMessage.join('\n') + '\n');
   }
 
   triggerNotification(message: ChatMessage): void
@@ -228,4 +268,80 @@ export class ChatComponent implements OnInit, AfterViewInit, AfterViewChecked, W
 
     return false;
   }
+
+  private parseHtml(messageText: string): string
+  {
+    let parsedText = '';
+    let isInsideCite = false;
+    let isInsideUsername = false;
+
+    for (const char of messageText) {
+      switch (char) {
+        case '>':
+          if (isInsideCite) {
+            parsedText += '</div>';
+          }
+
+          parsedText += '<div class="message-cite">';
+          isInsideCite = true;
+          break;
+
+        case '\n':
+          parsedText += isInsideCite ? '</div>' : '<br>';
+          break;
+
+        default:
+          if (char === ' ' && isInsideUsername) {
+            isInsideUsername = false;
+            parsedText += '</span>';
+          }
+
+          parsedText += char;
+      }
+    }
+
+    if (isInsideCite) {
+      parsedText += '</div>';
+    }
+
+    const matches = parsedText.match(/(\s|^)@\w+/g);
+
+    if (matches === null) {
+      return parsedText;
+    }
+
+    matches.forEach(
+      (match) => {
+        parsedText = parsedText.replace(match, '<span class="message-cite-username">' + match.substr(match.indexOf('@') + 1) + '</span>');
+      }
+    );
+
+    return parsedText;
+  }
+
+  private insertIntoTextareaCursorPosition(text: string): void
+  {
+    const textarea = this.chatTextArea.nativeElement;
+
+    const textLength = textarea.value.length;
+    const messagePartA = textarea.value.substr(0, textarea.selectionStart) + (textarea.selectionStart > 0 ? '\n' : '');
+    const messagePartB = textarea.value.substr(textarea.selectionStart, textLength);
+
+    textarea.value = messagePartA.trim() + text + messagePartB.trim();
+    textarea.focus();
+  }
+
+  private enableSendButton(): void
+  {
+    this.buttonSend.nativeElement.classList.add('button-send-online');
+    this.buttonSend.nativeElement.classList.remove('button-send-offline');
+    this.buttonSend.nativeElement.disabled = false;
+  }
+
+  private disableSendButton(): void
+  {
+    this.buttonSend.nativeElement.classList.remove('button-send-online');
+    this.buttonSend.nativeElement.classList.add('button-send-offline');
+    this.buttonSend.nativeElement.disabled = true;
+  }
 }

src/app/websocket.service.ts

@@ -69,7 +69,8 @@ export class WebsocketService {
           userId: messageReceived.userId,
           username: this.userList.get(messageReceived.userId),
           datetime: messageReceived.datetime,
-          message: messageReceived.message
+          message: messageReceived.message,
+          htmlMessage: '',
         };
 
         this.listener.onChatMessage(message);

src/global.scss

@@ -40,12 +40,22 @@ html, body {
 #chat-type-area {
   position: fixed;
   height: 50px;
+  background-color: #cccccc;
   left: 0;
   right: 0;
   bottom: 0;
   box-shadow: 0 0 20px rgba(0, 0, 0, 0.9);
 }
 
+#textarea-container {
+  position: absolute;
+  left: 0;
+  top: 0;
+  right: 50px;
+  bottom: 0;
+  height: 100%;
+}
+
 #chat-textarea {
   width: 100%;
   height: 100%;
@@ -54,10 +64,13 @@ html, body {
   font-size: 16px;
   color: white;
   border: 2px grey solid;
+  border-bottom: 2px solid white;
+  border-right: 2px solid white;
   box-sizing: border-box;
   padding: 5px;
   resize: none;
   outline: none;
+  overflow: hidden;
 }
 
 .chat-post {
@@ -196,3 +209,40 @@ html, body {
   display: none;
   z-index: 10;
 }
+
+.message-cite {
+  padding: 5px;
+  background-color: green;
+  border-left: 8px solid #005500;
+  font-style: italic;
+  margin: 5px 0;
+}
+
+.message-cite-username {
+  font-style: italic;
+  font-weight: bold;
+}
+
+#button-send {
+  position: absolute;
+  right: 0;
+  width: 50px;
+  height: 50px;
+  top: 0;
+  background-image: url("assets/graphics/button_send.svg");
+  background-size: contain;
+  background-position: center center;
+  background-repeat: no-repeat;
+  border-radius: 0;
+  border: 2px solid white;
+  border-bottom: 2px solid grey;
+  border-right: 2px solid grey;
+}
+
+.button-send-online {
+  background-color: green;
+}
+
+.button-send-offline {
+  background-color: #550000;
+}