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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Material+Symbols+Rounded:opsz,wght,FILL,[email protected],100..700,0..1,-50..200" />
  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
  <link href="https://fonts.googleapis.com/css2?family=Poppins:wght@300&display=swap" rel="stylesheet">
  <title>AI Chat Interface</title>
  <style>
    *{
      padding: 0;
      margin: 0;
      font-family: 'Poppins', sans-serif;
      box-sizing: border-box;
    }
    body {
  overflow: hidden;
}

/* Hide scrollbar only for Webkit browsers (Chrome, Safari, Opera) */
::-webkit-scrollbar {
  display: none;
}

    body{
      width: 100%;
      height: 100vh;
      background-color: #212121;
    }
    
    .chat{
      display: flex;
      gap: 20px;
      padding: 25px;
      color: #fff;
      font-size: 15px;
      font-weight: 300;
    }
    
    .chat img{
      width: 35px;
      height: 35px;
      border-radius: 50px;
    }
    
    .response{
      background-color: #212121;
    }
    
    .messagebar{
      position: fixed;
      bottom: 0;
      height: 5rem;
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: #212121;
    }
    
    .messagebar .bar-wrapper{
      background-color: #2f2f2f;
      border-radius: 20px;
      width: 70vw;
      padding: 10px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    
    .bar-wrapper input{
      width: 100%;
      padding: 5px;
      border: none;
      outline: none;
      font-size: 14px;
      background: none;
      color: #ccc;
    }
    
    .bar-wrapper input::placeholder{
      color: #ccc;
    }
    
    .messagebar button{
      display: flex;
      align-items: center;
      justify-content: center;
      background: none;
      border: none;
      color: #fff;
      cursor: pointer;
    }
    
    .message-box{
      height: calc(100vh - 5rem);
      overflow-y: auto;
    }
  </style>
</head>
<body>
  <div class="chatbox-wrapper">
    <div class="message-box" id="chat-container">
      <div class="chat response">
         <img src="https://freelogopng.com/images/all_img/1681038800chatgpt-logo-black.png" alt="AI">
        <span>こんにちは! <br> 
          どのようにお手伝いできますか?
        </span>
      </div>
    </div>
    <div class="messagebar">
      <div class="bar-wrapper">
        <input type="text" id="user-input" placeholder="Enter your message...">
        <button onclick="sendMessage()">
          <span class="material-symbols-rounded">
            send
          </span>
        </button>
      </div>
    </div>
  </div>

  <script>
    const messageBar = document.querySelector("#user-input");
    const sendBtn = document.querySelector(".bar-wrapper button");
    const messageBox = document.querySelector("#chat-container");

    function addMessage(message, isUser) {
      const messageElement = document.createElement('div');
      messageElement.classList.add('chat');
      if (!isUser) messageElement.classList.add('response');
      
      const imgElement = document.createElement('img');
       imgElement.src = isUser ? "https://wallpaperaccess.com/full/1595920.jpg" : "https://freelogopng.com/images/all_img/1681038800chatgpt-logo-black.png";
      imgElement.alt = isUser ? "User" : "AI";
      
      const spanElement = document.createElement('span');
      spanElement.textContent = message;
      
      messageElement.appendChild(imgElement);
      messageElement.appendChild(spanElement);
      
      messageBox.appendChild(messageElement);
      messageBox.scrollTop = messageBox.scrollHeight;
    }

    function sendMessage() {
      const message = messageBar.value.trim();
      if (message) {
        addMessage(message, true);
        messageBar.value = '';

        const eventSource = new EventSource(`/chat?message=${encodeURIComponent(message)}`);
        let aiResponse = '';

        eventSource.onmessage = function(event) {
          if (event.data === '[DONE]') {
            eventSource.close();
          } else {
            aiResponse += event.data;
            const aiMessageElement = document.querySelector('.chat.response:last-child span');
            if (aiMessageElement) {
              aiMessageElement.textContent = aiResponse;
            } else {
              addMessage(aiResponse, false);
            }
          }
        };

        eventSource.onerror = function(error) {
          console.error('EventSource failed:', error);
          eventSource.close();
        };
      }
    }

    messageBar.addEventListener('keypress', function(event) {
      if (event.key === 'Enter') {
        sendMessage();
      }
    });
  </script>
</body>
</html>