openpixie/chat.html at main · wobbywells/openpixie · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>OpenRouter Auth and Chat</title>
  <style>
    #chatBox {
      width: 100%;
      height: 300px;
      border: 1px solid #ccc;
      padding: 10px;
      overflow-y: auto;
      margin-bottom: 10px;
    }
    #userInput {
      width: calc(100% - 100px);
    }
    #sendButton {
      width: 80px;
    }
  </style>
</head>
<body>
  <button id="connectButton">Connect to OpenRouter</button>
  <button id="clearChatButton">Clear Chat</button>
  <div id="chatBox"></div>
  <input type="text" id="userInput" placeholder="Type a message...">
  <button id="sendButton">Send</button>

  <script>
    function generateRandomString(length) {
      const charset = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~';
      let randomString = '';
      const array = new Uint8Array(length);
      window.crypto.getRandomValues(array);
      for (let i = 0; i < length; i++) {
        randomString += charset[array[i] % charset.length];
      }
      return randomString;
    }

    async function sha256CodeChallenge(input) {
      const encoder = new TextEncoder();
      const data = encoder.encode(input);
      const hash = await crypto.subtle.digest('SHA-256', data);
      return btoa(String.fromCharCode.apply(null, new Uint8Array(hash)))
        .replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '');
    }

    async function sendChatCompletion(apiKey, messages) {
      const response = await fetch("https://openrouter.ai/api/v1/chat/completions", {
        method: "POST",
        headers: {
          "Authorization": `Bearer ${apiKey}`,
          "HTTP-Referer": `https://versabot.ai/pixie`,
          "X-Title": `OpenPixie`,
          "Content-Type": "application/json"
        },
        body: JSON.stringify({
          "model": "openai/gpt-4",
          "messages": messages,
          "stream": true
        })
      });

      if (!response.ok) {
        throw new Error('Network response was not ok');
      }

      const reader = response.body.getReader();
      const decoder = new TextDecoder('utf-8');
      let chatData = '';
      let fullResponse = '';

      document.getElementById('chatBox').innerHTML += `<p><strong>Assistant:</strong></p>`;

      while (true) {
        const { done, value } = await reader.read();
        if (done) break;
        chatData += decoder.decode(value, { stream: true });
        if (chatData.endsWith('\n')) {
          fullResponse += parseDeltas(chatData);
          chatData = '';
        }
      }

      let chatHistory = JSON.parse(localStorage.getItem('chatHistory')) || [];
      chatHistory.push({ sender: 'Assistant', message: fullResponse.trim() });
      localStorage.setItem('chatHistory', JSON.stringify(chatHistory));

      updateChatBox();
    }

    function parseDeltas(data) {
      const chatBox = document.getElementById('chatBox');
      const lines = data.split('\n').filter(line => line.startsWith('data: '));
      let responseChunk = '';

      lines.forEach(line => {
        const json = line.replace('data: ', '');
        if (json !== '[DONE]') {
          const parsedJson = JSON.parse(json);
          if (parsedJson.choices && parsedJson.choices[0].delta && parsedJson.choices[0].delta.content) {
            const content = parsedJson.choices[0].delta.content;
            chatBox.innerHTML += content;
            responseChunk += content;
          }
        }
      });
      chatBox.scrollTop = chatBox.scrollHeight;
      return responseChunk;
    }

    function updateChatBox() {
      const chatBox = document.getElementById('chatBox');
      const chatHistory = JSON.parse(localStorage.getItem('chatHistory')) || [];
      chatBox.innerHTML = chatHistory.map(entry => `<p><strong>${entry.sender}:</strong></p> ${entry.message}`).join('');
      chatBox.scrollTop = chatBox.scrollHeight;
    }

    document.getElementById('connectButton').addEventListener('click', async () => {
      let codeVerifier = generateRandomString(128);
      sessionStorage.setItem('code_verifier', codeVerifier);
      const callbackUrl = window.location.origin + window.location.pathname;
      const codeChallenge = await sha256CodeChallenge(codeVerifier);
      const authUrl = `https://openrouter.ai/auth?callback_url=${encodeURIComponent(callbackUrl)}&code_challenge=${codeChallenge}&code_challenge_method=S256`;
      window.location.href = authUrl;
    });

    document.getElementById('sendButton').addEventListener('click', async () => {
      const userInput = document.getElementById('userInput').value;
      document.getElementById('userInput').value = '';

      const apiKey = sessionStorage.getItem('api_key');
      if (!apiKey) {
        alert('Please connect to OpenRouter first.');
        return;
      }

      let chatHistory = JSON.parse(localStorage.getItem('chatHistory')) || [];
      chatHistory.push({ sender: 'You', message: userInput });
      localStorage.setItem('chatHistory', JSON.stringify(chatHistory));
      updateChatBox();

      const messages = chatHistory.map(entry => {
        return { role: entry.sender === 'You' ? 'user' : 'assistant', content: entry.message };
      });
      messages.unshift({ role: 'system', content: 'You are a helpful assistant.' });

      try {
        await sendChatCompletion(apiKey, messages);
      } catch (error) {
        chatHistory = JSON.parse(localStorage.getItem('chatHistory')) || [];
        chatHistory.push({ sender: 'Error', message: error.message });
        localStorage.setItem('chatHistory', JSON.stringify(chatHistory));
        updateChatBox();
      }
    });

    document.getElementById('clearChatButton').addEventListener('click', () => {
      localStorage.removeItem('chatHistory');
      updateChatBox();
    });

    (async () => {
      const urlParams = new URLSearchParams(window.location.search);
      const authCode = urlParams.get('code');
      let codeVerifier = sessionStorage.getItem('code_verifier');

      if (authCode) {
        fetch('https://openrouter.ai/api/v1/auth/keys', {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json'
          },
          body: JSON.stringify({
            code: authCode,
            code_verifier: codeVerifier,
            code_challenge_method: 'S256'
          })
        })
        .then(response => response.json())
        .then(data => {
          localStorage.removeItem('chatHistory');
          alert('API Key Received: ' + data.key);
          sessionStorage.setItem('api_key', data.key);
          sessionStorage.removeItem('code_verifier');
          document.getElementById('connectButton').style.display = 'none';
        })
        .catch((error) => {
          alert('Error: ' + error);
          sessionStorage.removeItem('code_verifier');
        });
      }

      if (sessionStorage.getItem('api_key')) {
        document.getElementById('connectButton').style.display = 'none';
      }

      updateChatBox();
    })();
  </script>
</body>
</html>