\n \n

AI Chat Assistant

\n\n

\n Hello! I'm your AI assistant. How can I help you today?\n

\n\n

\n \n \n

\n\n

This is a demo AI chat application. Your conversations are not stored.

\n \n \n View Source\n \n

\n\n \n\n",[],[185,192],{"_104":201,"_95":173,"_156":202,"_158":186,"_159":141,"_160":203,"_162":22,"_106":204,"_100":161,"_164":205,"_166":206,"_167":22,"_168":-5,"_169":207,"_98":208},"99b856b2-14b2-11f0-a468-569c3dd06744","329c01ae-14b2-11f0-83fe-569c3dd06744",15,["D",1744141776410],"script","// Define types for our messages\ninterface Message {\n role: 'user' | 'assistant';\n content: string;\n}\n\ninterface ApiResponse {\n message: {\n role: string;\n content: string;\n };\n usage: {\n prompt_tokens: number;\n completion_tokens: number;\n total_tokens: number;\n };\n}\n\ndocument.addEventListener('DOMContentLoaded', () => {\n // DOM elements\n const chatContainer = document.getElementById('chat-container') as HTMLDivElement;\n const userInput = document.getElementById('user-input') as HTMLTextAreaElement;\n const sendButton = document.getElementById('send-button') as HTMLButtonElement;\n const viewSourceLink = document.getElementById('view-source') as HTMLAnchorElement;\n \n // Set the view source link\n viewSourceLink.href = window.location.href.replace('esm.town', 'val.town');\n \n // Message history for context\n const messageHistory: Message[] = [\n { role: 'assistant', content: 'Hello! I\\'m your AI assistant. How can I help you today?' }\n ];\n \n // Function to add a message to the chat\n function addMessage(role: 'user' | 'assistant', content: string, isLoading: boolean = false): HTMLDivElement {\n const messageDiv = document.createElement('div');\n messageDiv.className = `message ${role} animate-fade-in`;\n \n // Apply Tailwind classes based on role\n if (role === 'user') {\n messageDiv.classList.add(\n 'bg-indigo-900', \n 'ml-auto', \n 'rounded-2xl', \n 'rounded-tr-sm',\n 'border',\n 'border-indigo-700',\n 'shadow-lg'\n );\n } else {\n messageDiv.classList.add(\n 'bg-gray-700', \n 'mr-auto', \n 'rounded-2xl', \n 'rounded-tl-sm',\n 'border',\n 'border-gray-600',\n 'shadow-md'\n );\n \n if (isLoading) {\n messageDiv.classList.add('animate-pulse');\n }\n }\n \n const messageContent = document.createElement('div');\n messageContent.className = 'message-content p-3 text-gray-200';\n \n if (isLoading) {\n // Create a loading indicator with dots\n const loadingDots = document.createElement('div');\n loadingDots.className = 'flex space-x-1';\n \n for (let i = 0; i < 3; i++) {\n const dot = document.createElement('div');\n dot.className = 'w-2 h-2 bg-gray-400 rounded-full';\n dot.style.animationDelay = `${i * 0.15}s`;\n dot.classList.add('animate-pulse');\n loadingDots.appendChild(dot);\n }\n \n messageContent.appendChild(loadingDots);\n } else {\n messageContent.textContent = content;\n }\n \n messageDiv.appendChild(messageContent);\n chatContainer.appendChild(messageDiv);\n \n // Scroll to the bottom\n chatContainer.scrollTop = chatContainer.scrollHeight;\n \n return messageDiv;\n }\n \n // Function to format the AI response with enhanced markdown-like formatting\n function formatResponse(text: string): string {\n // Replace code blocks with syntax highlighting style\n text = text.replace(/```([\\s\\S]*?)```/g, '

$1

');\n \n // Replace inline code\n text = text.replace(/`([^`]+)`/g, '$1');\n \n // Replace paragraphs\n text = text.split('\\n\\n').map(p => `

${p}

`).join('');\n \n // Replace line breaks\n text = text.replace(/\\n/g, '
');\n \n // Replace bold text\n text = text.replace(/\\*\\*([^*]+)\\*\\*/g, '$1');\n \n // Replace italic text\n text = text.replace(/\\*([^*]+)\\*/g, '$1');\n \n // Replace links\n text = text.replace(/\\[([^\\]]+)\\]\$([^)]+)\$/g, '$1');\n \n return text;\n }\n \n // Function to send a message to the API\n async function sendMessage(userMessage: string): Promise {\n // Disable input while processing\n userInput.disabled = true;\n sendButton.disabled = true;\n sendButton.classList.add('opacity-50');\n \n // Add user message to UI\n addMessage('user', userMessage);\n \n // Add user message to history\n messageHistory.push({ role: 'user', content: userMessage });\n \n // Add loading message\n const loadingMessage = addMessage('assistant', '', true);\n \n try {\n const response = await fetch('/api/chat', {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n },\n body: JSON.stringify({ messages: messageHistory }),\n });\n \n if (!response.ok) {\n throw new Error('API request failed');\n }\n \n const data: ApiResponse = await response.json();\n const assistantMessage = data.message.content;\n \n // Remove loading message\n loadingMessage.remove();\n \n // Add assistant message to UI with formatting\n const messageElement = addMessage('assistant', '');\n messageElement.querySelector('.message-content')!.innerHTML = formatResponse(assistantMessage);\n \n // Add assistant message to history\n messageHistory.push({ role: 'assistant', content: assistantMessage });\n \n } catch (error) {\n console.error('Error:', error);\n \n // Remove loading message\n loadingMessage.remove();\n \n // Show error message\n addMessage('assistant', 'Sorry, I encountered an error. Please try again.');\n } finally {\n // Re-enable input\n userInput.disabled = false;\n sendButton.disabled = false;\n sendButton.classList.remove('opacity-50');\n userInput.focus();\n }\n }\n \n // Event listener for send button\n sendButton.addEventListener('click', () => {\n const message = userInput.value.trim();\n if (message) {\n sendMessage(message);\n userInput.value = '';\n }\n });\n \n // Event listener for Enter key (but Shift+Enter for new line)\n userInput.addEventListener('keydown', (e: KeyboardEvent) => {\n if (e.key === 'Enter' && !e.shiftKey) {\n e.preventDefault();\n sendButton.click();\n }\n });\n \n // Auto-resize textarea as user types\n userInput.addEventListener('input', () => {\n userInput.style.height = 'auto';\n userInput.style.height = Math.min(userInput.scrollHeight, 200) + 'px';\n });\n \n // Focus the input field on load\n userInput.focus();\n});",[],[185,173],[185],{"_104":211,"_95":212,"_156":213,"_158":-5,"_159":141,"_160":214,"_162":22,"_106":215,"_100":187,"_164":196,"_166":216,"_167":22,"_168":-5,"_169":217,"_98":218},"a3251fa0-14b2-11f0-aa81-569c3dd06744","README.md","fc000a0a-14b1-11f0-abc2-569c3dd06744",16,["D",1744141792208],"# AI Chat App\n\nA sleek, dark-themed AI chat application built on Val Town using the OpenAI API.\n\n## Features\n\n- Real-time chat interface with an AI assistant\n- Elegant dark theme with purple/indigo accents\n- Powered by OpenAI's GPT models\n- Modern, responsive design with Tailwind CSS\n- TypeScript for type safety and better developer experience\n- Enhanced markdown-like formatting for code blocks and other elements\n- Smooth animations and loading indicators\n- Auto-resizing text input\n\n## Project Structure\n\n```\n├── backend/\n│ └── index.ts # Backend API with Hono and OpenAI integration\n├── frontend/\n│ ├── index.html # Main HTML template with dark theme\n│ └── index.ts # Frontend TypeScript with enhanced UI\n└── README.md\n```\n\n## How It Works\n\n1. The frontend provides a sleek chat interface where users can type messages\n2. Messages are sent to the backend API endpoint\n3. The backend uses the OpenAI API to generate responses\n4. Responses are formatted with enhanced markdown support and displayed in the chat interface\n5. UI includes loading indicators and smooth animations for better user experience\n\n## Technologies Used\n\n- **TypeScript**: For type safety and better code organization\n- **Tailwind CSS**: For styling without custom CSS files\n- **Hono**: Lightweight web framework for the backend\n- **OpenAI API**: For generating AI responses\n- **CSS Animations**: For smooth transitions and loading indicators\n\n## Requirements\n\nThis app requires an OpenAI API key to be set as an environment variable in Val Town.\n\n## Setup\n\n1. Fork this project in Val Town\n2. Add your OpenAI API key as an environment variable named `OPENAI_API_KEY`\n3. Run the project\n\n## Customization\n\nYou can customize the app by:\n- Changing the OpenAI model in the backend (currently using gpt-4o-mini)\n- Adjusting the max tokens parameter for longer or shorter responses\n- Modifying the color scheme by changing the Tailwind classes\n- Adding additional features like message history or user authentication\n- Extending the markdown formatting to support more elements",[],[212],"files",[153,171,183,190,200,210],"counts",{"_223":32,"_224":161,"_225":32,"_226":32},"pulls","branches","forks","envVars","contents",[],{"_104":172,"_95":173,"_156":116,"_158":157,"_159":141,"_160":174,"_162":22,"_106":230,"_100":176,"_164":177,"_166":178,"_167":22,"_168":179,"_98":231},["D",1744141646882],[155,173],"upstreamProject","upstreamBranch","emptyEnvVars","isNew","flags",[],"routes/_app.x.$handle.$name.branch.$branch.version.$version.code.$",{"_93":94,"_95":96,"_97":43,"_100":101,"_98":99,"_102":240,"_151":245,"_219":264,"_196":265,"_227":267,"_268":-5,"_269":22,"_270":-5,"_271":-5,"_272":-5,"_273":274},{"_104":105,"_95":96,"_106":241,"_108":-5,"_109":22,"_110":111,"_112":-5,"_113":-5,"_14":114,"_115":116,"_117":118,"_119":120,"_121":32,"_16":122,"_123":124,"_125":124,"_126":127,"_128":127,"_129":127,"_130":124,"_131":124,"_23":242,"_135":243,"_138":244,"_150":22},["D",1744141435618],{"_93":94,"_133":134},{"_93":94,"_137":134},{"_100":140,"_95":43,"_104":141,"_142":105,"_143":-5,"_144":-5,"_145":-5,"_146":-5,"_147":-5,"_148":96,"_149":94},[246,252,261],{"_104":154,"_95":155,"_156":157,"_158":-5,"_159":141,"_160":161,"_162":118,"_106":163,"_100":32,"_164":165,"_166":-5,"_167":22,"_168":-5,"_169":247,"_98":251},[248],{"_104":172,"_95":173,"_156":116,"_158":157,"_159":141,"_160":174,"_162":22,"_106":175,"_100":176,"_164":177,"_166":178,"_167":22,"_168":179,"_169":249,"_98":250},[],[155,173],[155],{"_104":184,"_95":185,"_156":186,"_158":-5,"_159":141,"_160":187,"_162":118,"_106":188,"_100":32,"_164":165,"_166":-5,"_167":22,"_168":-5,"_169":253,"_98":260},[254,257],{"_104":191,"_95":192,"_156":193,"_158":186,"_159":141,"_160":101,"_162":22,"_106":194,"_100":195,"_164":196,"_166":197,"_167":22,"_168":-5,"_169":255,"_98":256},[],[185,192],{"_104":201,"_95":173,"_156":202,"_158":186,"_159":141,"_160":203,"_162":22,"_106":204,"_100":161,"_164":205,"_166":206,"_167":22,"_168":-5,"_169":258,"_98":259},[],[185,173],[185],{"_104":211,"_95":212,"_156":213,"_158":-5,"_159":141,"_160":214,"_162":22,"_106":215,"_100":187,"_164":196,"_166":216,"_167":22,"_168":-5,"_169":262,"_98":263},[],[212],[246,248,252,254,257,261],{"_104":172,"_95":173,"_156":116,"_158":157,"_159":141,"_160":174,"_162":22,"_106":230,"_100":176,"_164":177,"_166":178,"_167":22,"_168":179,"_98":266},[155,173],[],"upstream","showCompareCallout","pull","ahead","behind","templates",[],"actionData","errors"]