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It will not obtain new information or change the database, but just append the thought to the log. Use it when complex reasoning or some cache memory is needed.\",\n parameters: z.object({\n thought: z.string().describe(\"A thought to think about.\"),\n }),\n execute: async ({ thought }) => {\n console.log(`[THOUGHT]: ${thought}`);\n return { success: true, message: \"Thought recorded\" };\n },\n});\n\nconst system = await readFile(\"/backend/system_prompt.txt\", import.meta.url);\n\nexport const app = new Hono();\napp.post(\"/send-message\", async (c) => {\n const bearerToken = c.req.header(\"Authorization\")?.replace(\"Bearer \", \"\");\n if (!bearerToken) {\n return Response.json(\"Please provide a bearer token\", { status: 401 });\n }\n\n const { messages, project, branchId, anthropicApiKey } = await c.req.json();\n\n const coreMessages = convertToCoreMessages(messages);\n\n let lastMessage = coreMessages.at(-1);\n if (lastMessage) {\n if (typeof lastMessage.content === \"string\") {\n lastMessage.content = [\n { type: \"text\", text: lastMessage.content },\n ];\n }\n lastMessage.content.at(-1).providerOptions = {\n anthropic: { cacheControl: { type: \"ephemeral\" } },\n };\n }\n\n console.log(coreMessages);\n\n // Check if API key is available\n if (!anthropicApiKey) {\n return Response.json({\n error: \"Anthropic API key is required. Please log out and add your Anthropic API key to use this app.\",\n }, { status: 400 });\n }\n\n const anthropic = createAnthropic({\n apiKey: anthropicApiKey,\n });\n\n const result = await streamText({\n model: anthropic(\"claude-3-7-sonnet-20250219\"),\n messages: coreMessages,\n system: system + anthropicPromptMods,\n tools: {\n str_replace_editor: getTextEditorTool(bearerToken, project, branchId),\n think: thinkTool,\n },\n maxSteps: 20,\n abortSignal: c.req.raw.signal,\n });\n\n result.providerMetadata.then(x => console.log(x)); // always returns 0\n\n return result.toDataStreamResponse({\n sendReasoning: true,\n experimental_sendFinish: true,\n getErrorMessage: error => {\n console.log(\"error in toDataStreamResponse\");\n console.log(error);\n if (error == null) {\n return \"unknown error\";\n }\n\n if (typeof error === \"string\") {\n return error;\n }\n\n if (error instanceof Error) {\n return error.message;\n }\n\n return JSON.stringify(error);\n },\n });\n});\napp.get(\"/projects-loader\", async (c) => {\n const bearerToken = c.req.header(\"Authorization\")?.replace(\"Bearer \", \"\");\n if (!bearerToken) {\n return Response.json(\"Please provide a bearer token\", { status: 401 });\n }\n\n const vt = new ValTown({ bearerToken });\n\n const [profile, projects] = await Promise.all([\n vt.me.profile.retrieve(),\n vt.me.projects.list({\n limit: 100,\n }),\n ]);\n\n return c.json({ profile, projects: projects.data });\n});\n\napp.get(\"/project-branches\", async (c) => {\n const bearerToken = c.req.header(\"Authorization\")?.replace(\"Bearer \", \"\");\n if (!bearerToken) {\n return Response.json(\"Please provide a bearer token\", { status: 401 });\n }\n\n const projectId = c.req.query(\"projectId\");\n if (!projectId) {\n return Response.json(\"Please provide a projectId\", { status: 400 });\n }\n\n const vt = new ValTown({ bearerToken });\n\n try {\n const branches = await vt.projects.branches.list(projectId, { limit: 100 });\n return c.json({ branches });\n } catch (error) {\n console.error(\"Error fetching branches:\", error);\n return Response.json({ error: \"Failed to fetch branches\" }, { status: 500 });\n }\n});","import { readFile } from \"https://esm.town/v/std/utils@71-main/index.ts\";\nimport { createAnthropic } from \"npm:@ai-sdk/anthropic\";\nimport { ValTown } from \"npm:@valtown/sdk@0.37.0\";\nimport { convertToCoreMessages, streamText, tool } from \"npm:ai\";\nimport { Hono } from \"npm:hono\";\nimport { z } from \"npm:zod\";\nimport { getTextEditorTool } from \"./file-editing.ts\";\n\nconst anthropicPromptMods = `\\n\\n \n\nRead repo files from the base directory / directly, not /repo/.\n\nBe sure to use your thinking tool before using any other tools.\n`;\n\n/**\n * A tool that allows the AI to log thoughts without changing application state.\n * Useful for complex reasoning or caching memory.\n */\nexport const thinkTool = tool({\n description:\n \"Use the tool to think about something. It will not obtain new information or change the database, but just append the thought to the log. Use it when complex reasoning or some cache memory is needed.\",\n parameters: z.object({\n thought: z.string().describe(\"A thought to think about.\"),\n }),\n execute: async ({ thought }) => {\n console.log(`[THOUGHT]: ${thought}`);\n return { success: true, message: \"Thought recorded\" };\n },\n});\n\nconst system = await readFile(\"/backend/system_prompt.txt\", import.meta.url);\n\nexport const app = new Hono();\napp.post(\"/send-message\", async (c) => {\n const bearerToken = c.req.header(\"Authorization\")?.replace(\"Bearer \", \"\");\n if (!bearerToken) {\n return Response.json(\"Please provide a bearer token\", { status: 401 });\n }\n\n const { messages, project, branchId, anthropicApiKey } = await c.req.json();\n\n const coreMessages = convertToCoreMessages(messages);\n\n let lastMessage = coreMessages.at(-1);\n if (lastMessage) {\n if (typeof lastMessage.content === \"string\") {\n lastMessage.content = [\n { type: \"text\", text: lastMessage.content },\n ];\n }\n lastMessage.content.at(-1).providerOptions = {\n anthropic: { cacheControl: { type: \"ephemeral\" } },\n };\n }\n\n console.log(coreMessages);\n\n // Check if API key is available\n if (!anthropicApiKey) {\n return Response.json({\n error: \"Anthropic API key is required. Please log out and add your Anthropic API key to use this app.\",\n }, { status: 400 });\n }\n\n const anthropic = createAnthropic({\n apiKey: anthropicApiKey,\n });\n\n const result = await streamText({\n model: anthropic(\"claude-3-7-sonnet-20250219\"),\n messages: coreMessages,\n system: system + anthropicPromptMods,\n tools: {\n str_replace_editor: getTextEditorTool(bearerToken, project, branchId),\n think: thinkTool,\n },\n maxSteps: 20,\n abortSignal: c.req.raw.signal,\n });\n\n result.providerMetadata.then(x => console.log(x)); // always returns 0\n\n return result.toDataStreamResponse({\n sendReasoning: true,\n experimental_sendFinish: true,\n getErrorMessage: error => {\n console.log(\"error in toDataStreamResponse\");\n console.log(error);\n if (error == null) {\n return \"unknown error\";\n }\n\n if (typeof error === \"string\") {\n return error;\n }\n\n if (error instanceof Error) {\n return error.message;\n }\n\n return JSON.stringify(error);\n },\n 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\n \n \n \n `,\n );\n});\n\n// Unwrap and rethrow Hono errors as the original error\n// If you delete this, all errors will be \"Internal Server Error\"\napp.onError((err, c) => {\n throw err;\n});\n\nexport default app.fetch;","label","townie-prototype",[34],"39d80276-070e-11f0-a339-569c3dd06744","README.md",["D",1742641812972],31,"# OpenTownie\n\nOpenTownie is a Val Town Project that lets you edit other Val Town Projects with AI.\n\n\n### Todos\n\n- [x] Show reasoning in a detail\n- [x] Consider asking it to write the minimum code possible \n- [x] Add caching (post in the vercel ai discussion about how it's not working)\n- [x] For login, have a button that reloads the page\n- [x] Start a timer for messages\n- [x] Add more indicators that it's \"still working\"\n- [x] Require users supply their own Anthropic token?\n- [x] Add cost indications on messages\n- [x] Add a bell noise when the message is done to let us know\n- [x] Launch!\n- [ ] Let it select the branch name from a dropdown\n- [ ] Consider giving it a tool to replace whole files\n- [ ] Consider giving it a tool to read all files and folders\n- [ ] Persistent threads?\n- [ ] Have it default to creating a new branch off main and then embedding and iframe to the resulting http val and give you a link to a pr opening url\n- [ ] Rebuild as React Router?\n- [ ] prompt it to use the thinking tool\n- [ ] delete file 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@jsxImportSource https://esm.sh/react@18.2.0?dev */\nimport { createRoot } from \"https://esm.sh/react-dom@18.2.0/client?dev\";\nimport { App } from \"./components/App.tsx\";\n\ncreateRoot(document.getElementById(\"root\")).render();",[],[167,217],"316c9e68-0703-11f0-8b5c-569c3dd06744","soundEffects.ts","316c9f1c-0703-11f0-8b5c-569c3dd06744","72160f18-851f-4089-8cbc-11ee6f1dce73",692,["D",1742637074391],"/**\n * Sound effects utility functions for the application\n */\n\n/**\n * Plays a bell sound notification using the Web Audio API\n * @returns A Promise that resolves when the sound has started playing\n */\nexport function playBellSound(): Promise {\n return new Promise((resolve) => {\n try {\n // Create audio context\n const AudioContext = window.AudioContext || (window as any).webkitAudioContext;\n if (!AudioContext) {\n console.warn(\"Web Audio API not supported in this browser\");\n resolve();\n return;\n }\n \n const audioCtx = new AudioContext();\n const masterGain = audioCtx.createGain();\n masterGain.connect(audioCtx.destination);\n \n // Bell frequency ratios (fundamental and overtones)\n const ratios = [1, 2, 2.4, 3, 4, 5.4];\n const baseFreq = 440; // Fundamental frequency\n \n // Create and connect oscillators for each frequency component\n ratios.forEach((ratio, i) => {\n const osc = audioCtx.createOscillator();\n const gain = audioCtx.createGain();\n \n // Connect this oscillator chain\n osc.connect(gain);\n gain.connect(masterGain);\n \n // Set frequency based on ratio\n osc.frequency.value = baseFreq * ratio;\n \n // Amplitude decreases for higher overtones\n const volume = 0.2 / (i + 1);\n \n // Set envelope\n const now = audioCtx.currentTime;\n gain.gain.setValueAtTime(0, now);\n gain.gain.linearRampToValueAtTime(volume, now + 0.01);\n \n // Different decay times for different harmonics\n const decayTime = 1.0 + (i * 0.3);\n gain.gain.exponentialRampToValueAtTime(0.001, now + decayTime);\n \n // Start and stop\n osc.start(now);\n osc.stop(now + decayTime);\n });\n \n // Resolve the promise after a short delay to ensure sound has started\n setTimeout(resolve, 50);\n } catch (error) {\n console.error(\"Error playing bell sound:\", error);\n resolve(); // Resolve anyway to prevent hanging promises\n }\n });\n}\n\n/**\n * Plays a simple notification sound using the Web Audio API\n * This is a simpler, shorter bell sound\n * @returns A Promise that resolves when the sound has started playing\n */\nexport function playSimpleNotification(): Promise {\n return new Promise((resolve) => {\n try {\n // Create audio context\n const AudioContext = window.AudioContext || (window as any).webkitAudioContext;\n if (!AudioContext) {\n console.warn(\"Web Audio API not supported in this browser\");\n resolve();\n return;\n }\n \n const audioCtx = new AudioContext();\n \n // Create oscillator (sound generator)\n const oscillator = audioCtx.createOscillator();\n oscillator.type = 'sine';\n oscillator.frequency.value = 900;\n \n // Create gain node for volume control\n const gainNode = audioCtx.createGain();\n \n // Connect the audio nodes\n oscillator.connect(gainNode);\n gainNode.connect(audioCtx.destination);\n \n // Get current time reference\n const now = audioCtx.currentTime;\n \n // Set volume envelope for bell-like sound\n gainNode.gain.setValueAtTime(0, now);\n gainNode.gain.linearRampToValueAtTime(0.3, now + 0.01);\n gainNode.gain.exponentialRampToValueAtTime(0.001, now + 0.5);\n \n // Start and stop the sound\n oscillator.start(now);\n oscillator.stop(now + 0.5);\n \n // Resolve the promise after a short delay\n setTimeout(resolve, 50);\n } catch (error) {\n console.error(\"Error playing notification sound:\", error);\n resolve(); // Resolve anyway to prevent hanging promises\n }\n });\n}",[],[167,234,226],"utils","316cc4d8-0703-11f0-8b5c-569c3dd06744",["D",1742637074391],[205],[167,234],"7b488948-0686-11f0-afe5-569c3dd06744","Projects.tsx","e27f2ad2-05bd-11f0-ac46-569c3dd06744","f58971e4-05ba-11f0-b2aa-569c3dd06744",603,["D",1742583511210],74,"/** @jsxImportSource https://esm.sh/react@18.2.0?dev */\nimport React from \"https://esm.sh/react@18.2.0?dev\";\n\nasync function loader({ bearerToken }: { bearerToken: string }) {\n const data = await (await fetch(\"/api/projects-loader\", {\n headers: {\n \"Authorization\": \"Bearer \" + bearerToken,\n },\n })).json();\n return data;\n}\n\nexport function Projects({ bearerToken, setProject }: { bearerToken: string; setProject: any }) {\n const [loaderData, setLoaderData] = React.useState();\n\n React.useEffect(\n () => {\n loader({ bearerToken }).then(setLoaderData);\n },\n [],\n );\n\n return (\n

\n \n @{loaderData?.profile?.username}\n \n 's' Projects\n

\n {loaderData?.projects?.map((p: any) => (\n setProject(p)}\n >\n

{p.name}

\n ))}\n \n );\n}",[],[167,249,240],"components","0e4f9bce-0708-11f0-a04d-569c3dd06744","MessagePart.tsx","4f494b6e-063d-11f0-acdc-569c3dd06744",707,["D",1742639162959],11,"/** @jsxImportSource https://esm.sh/react@18.2.0?dev */\nimport { type Message } from \"https://esm.sh/@ai-sdk/react?dev&deps=react@18.2.0&react-dom@18.2.0\";\nimport ReactMarkdown from \"https://esm.sh/react-markdown?dev&deps=react@18.2.0&react-dom@18.2.0\";\n\nexport function MessagePart({ part }: { part: NonNullable[number] }) {\n if (part.type === \"text\") return {part.text};\n if (part.type === \"reasoning\")\n return (\n

\n Reasoning...\n

\n {part.reasoning}\n {part.details && part.details.map((detail, index) => (\n

\n {detail.text}\n

\n ))}\n

\n );\n if (part.type === \"tool-invocation\") {\n let { step, state, toolName, args } = part.toolInvocation;\n \n // Properly conjugate command verbs to present participle form\n const getCommandVerb = (command: string): string => {\n switch (command) {\n case \"view\": return \"viewing\";\n case \"create\": return \"creating\";\n case \"str_replace\": return \"replacing\";\n case \"insert\": return \"inserting\";\n case \"undo_edit\": return \"undoing edit\";\n default: return command + \"ing\"; // Fallback for unknown commands\n }\n };\n \n let name = toolName === \"str_replace_editor\"\n ? getCommandVerb(args.command) + \" \" + args.path + (args.view_range ?? \"\")\n : toolName;\n return (\n

\n {name}\n

\n          {JSON.stringify(part.toolInvocation, null, 2)}\n

\n );\n }\n if (part.type === \"source\") {\n return

TODO Source: {JSON.stringify(part.source)}

;\n }\n if (part.type === \"file\") {\n return (\n

{atob(part.data)}

\n );\n }\n}",[],[167,249,251],"55f7d216-069f-11f0-9bc7-569c3dd06744","Login.tsx","0c1b9716-05bb-11f0-b565-569c3dd06744",652,["D",1742594186024],24,"/** @jsxImportSource https://esm.sh/react@18.2.0?dev */\nimport { useLocalStorage } from \"https://esm.sh/react-use?dev&deps=react@18.2.0&react-dom@18.2.0\";\n\nexport function Login() {\n const [bearerToken, setBearerToken] = useLocalStorage(\"bearer\", \"\");\n const [anthropicApiKey, setAnthropicApiKey] = useLocalStorage(\"anthropic_api_key\", \"\");\n\n return (\n

Login

\n \n \n Val Town API Token\n \n {\"\"}(with projects:write permission)\n \n setBearerToken(e.target.value)}\n placeholder=\"vtwn-xxxx\"\n autoComplete=\"off\"\n className=\"w-full p-3 rounded-lg border border-gray-300 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none\"\n />\n

\n Anthropic API Key\n setAnthropicApiKey(e.target.value)}\n placeholder=\"sk-ant-xxxxx\"\n autoComplete=\"off\"\n className=\"w-full p-3 rounded-lg border border-gray-300 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none\"\n />\n

\n \n Login\n \n

\n );\n}",[],[167,249,260],"131b5452-070f-11f0-8431-569c3dd06744","Chat.tsx","3cfe1fca-05bb-11f0-948e-569c3dd06744",768,["D",1742642177482],173,"/** @jsxImportSource https://esm.sh/react@18.2.0?dev */\nimport { useChat } from \"https://esm.sh/@ai-sdk/react?dev&deps=react@18.2.0&react-dom@18.2.0\";\nimport ReactMarkdown from \"https://esm.sh/react-markdown?dev&deps=react@18.2.0&react-dom@18.2.0\";\nimport React, { useEffect, useRef, useState } from \"https://esm.sh/react@18.2.0?dev\";\nimport { playBellSound } from \"../utils/soundEffects.ts\";\nimport { MessagePart } from \"./MessagePart.tsx\";\n\n// Component for the loading spinner\nconst LoadingSpinner = () => (\n

\n);\n\n// Utility to format milliseconds into a readable time string\nconst formatTime = (ms: number): string => {\n const seconds = Math.floor(ms / 1000);\n const minutes = Math.floor(seconds / 60);\n const remainingSeconds = seconds % 60;\n return `${minutes}:${remainingSeconds.toString().padStart(2, \"0\")}`;\n};\n\n// Calculate cost based on token usage\nconst calculateCost = (usage: any): string => {\n if (!usage || !usage.promptTokens) {\n return \"0.00\";\n }\n\n // Cost per million tokens\n const PROMPT_COST_PER_MILLION = 3;\n const COMPLETION_COST_PER_MILLION = 15;\n const CACHE_WRITE_COST_PER_MILLION = 3.75;\n const CACHE_READ_COST_PER_MILLION = 0.3;\n\n // Get reported values\n const promptTokens = usage.promptTokens || 0;\n const completionTokens = usage.completionTokens || 0;\n\n // Estimate cache read tokens\n // Approach: Estimate that 40% of prompt tokens come from cache read\n // This percentage can be adjusted based on observed patterns\n const estimatedCacheReadTokens = Math.round(promptTokens * 0.4);\n\n // Estimate cache write tokens\n // Approach: Assume cache write tokens are a portion of prompt tokens that aren't from cache read\n let estimatedCacheWriteTokens = 0;\n\n // If we have more prompt tokens than estimated cache read tokens,\n // estimate that 70% of the difference are cache write tokens\n estimatedCacheWriteTokens = Math.round((promptTokens - estimatedCacheReadTokens) * 0.7);\n\n // Calculate costs\n // Subtract both cache read and write tokens from prompt tokens to avoid double counting\n const promptCost = ((promptTokens - estimatedCacheWriteTokens - estimatedCacheReadTokens) / 1000000)\n * PROMPT_COST_PER_MILLION;\n const completionCost = (completionTokens / 1000000) * COMPLETION_COST_PER_MILLION;\n const cacheWriteCost = (estimatedCacheWriteTokens / 1000000) * CACHE_WRITE_COST_PER_MILLION;\n const cacheReadCost = (estimatedCacheReadTokens / 1000000) * CACHE_READ_COST_PER_MILLION;\n\n // Total cost\n const totalCost = promptCost + completionCost + cacheWriteCost + cacheReadCost;\n\n // Add both estimated cache tokens to the usage object for transparency\n usage.estimatedCacheReadTokens = estimatedCacheReadTokens;\n usage.estimatedCacheWriteTokens = estimatedCacheWriteTokens;\n\n // Store the raw cost with more precision for debugging\n usage.rawCost = totalCost.toFixed(5);\n\n // Format to the nearest penny (2 decimal places)\n // If less than 1 penny, show \"< $0.01\"\n if (totalCost < 0.01) {\n return \"< $0.01\";\n } else {\n return totalCost.toFixed(2);\n }\n};\n\n// Component for the message timer\nconst MessageTimer = (\n { createdAt, endTime, isStopped }: { createdAt: number; endTime?: number; isStopped?: boolean },\n) => {\n const [currentTime, setCurrentTime] = useState(Date.now());\n\n // Update currentTime periodically when message is still running (no endTime) and not stopped\n useEffect(() => {\n if (endTime !== undefined || isStopped) return;\n\n const interval = setInterval(() => {\n setCurrentTime(Date.now());\n }, 100);\n\n return () => clearInterval(interval);\n }, [endTime, isStopped]);\n\n // Calculate elapsed time: either from start to end (if finished) or from start to current time (if running)\n const elapsedTime = endTime !== undefined\n ? endTime - createdAt\n : currentTime - createdAt;\n\n return (\n

\n Time: {formatTime(elapsedTime)}\n

\n );\n};\n\nexport function Chat({\n project,\n bearerToken,\n anthropicApiKey,\n setProject,\n}: {\n project: any;\n bearerToken: string;\n anthropicApiKey: string;\n setProject: (project: any) => void;\n}) {\n const [usages, setUsages] = useState>({});\n const [branchId, setBranchId] = useState();\n const [soundEnabled, setSoundEnabled] = useState(true);\n const [branches, setBranches] = useState>([]);\n const [isLoadingBranches, setIsLoadingBranches] = useState(false);\n\n // Only track message end times - we'll use message.createdAt for start times\n const [messageEndTimes, setMessageEndTimes] = useState>({});\n\n // State to detect if the user is on a mobile device\n const [isMobile, setIsMobile] = useState(false);\n\n // Fetch branches when project changes\n useEffect(() => {\n if (!project || !project.id) return;\n\n const fetchBranches = async () => {\n setIsLoadingBranches(true);\n try {\n const response = await fetch(`/api/project-branches?projectId=${project.id}`, {\n headers: {\n \"Authorization\": `Bearer ${bearerToken}`,\n },\n });\n\n if (!response.ok) {\n throw new Error(`Failed to fetch branches: ${response.statusText}`);\n }\n\n const data = await response.json();\n setBranches(data.branches || []);\n\n // If branches are loaded and there's a \"main\" branch, select it by default\n if (data.branches && data.branches.length > 0) {\n const mainBranch = data.branches.find((branch: any) => branch.name === \"main\");\n if (mainBranch) {\n setBranchId(mainBranch.id);\n } else {\n // Otherwise select the first branch\n setBranchId(data.branches[0].id);\n }\n }\n } catch (error) {\n console.error(\"Error fetching branches:\", error);\n } finally {\n setIsLoadingBranches(false);\n }\n };\n\n fetchBranches();\n }, [project, bearerToken]);\n\n // Check if user is on mobile when component mounts\n useEffect(() => {\n const checkMobile = () => {\n const userAgent = navigator.userAgent || navigator.vendor || (window as any).opera;\n const mobileRegex = /android|webos|iphone|ipad|ipod|blackberry|iemobile|opera mini/i;\n setIsMobile(mobileRegex.test(userAgent.toLowerCase()));\n };\n\n checkMobile();\n\n // Also check on resize, as user might switch device orientation\n window.addEventListener(\"resize\", checkMobile);\n return () => window.removeEventListener(\"resize\", checkMobile);\n }, []);\n\n // Custom stop handler reference to handle stopping timers and spinners\n const customStopRef = useRef<(() => void) | null>(null);\n\n const {\n messages,\n error,\n input,\n handleInputChange,\n handleSubmit,\n stop,\n status,\n } = useChat({\n api: \"/api/send-message\",\n body: {\n project,\n branchId,\n anthropicApiKey,\n },\n headers: {\n \"Authorization\": `Bearer ${bearerToken}`,\n },\n onFinish: (message, options) => {\n // When message finishes, update usage data\n setUsages(prev => ({\n ...prev,\n [message.id]: options.usage,\n }));\n\n // Record the end time\n setMessageEndTimes(prev => ({\n ...prev,\n [message.id]: Date.now(),\n }));\n\n // Play notification sound when message is finished\n if (soundEnabled) {\n playBellSound().catch(error => {\n console.log(\"Error playing bell sound:\", error);\n });\n }\n },\n });\n\n const running = status === \"streaming\" || status === \"submitted\";\n\n // Keep track of the most recent assistant message that's still streaming\n const pendingMessageId = React.useMemo(() => {\n if (!running) return null;\n // Find the most recent assistant message that doesn't have an end time\n const pendingMessages = messages\n .filter(msg => msg.role === \"assistant\" && !messageEndTimes[msg.id]);\n return pendingMessages.length > 0 ? pendingMessages[pendingMessages.length - 1].id : null;\n }, [messages, messageEndTimes, running]);\n\n // Custom stop handler that also handles UI elements (timer and spinner)\n const handleStop = React.useCallback(() => {\n // Call the original stop function\n stop();\n\n // Also mark any pending messages as ended to stop timers and spinners\n if (pendingMessageId) {\n setMessageEndTimes(prev => ({\n ...prev,\n [pendingMessageId]: Date.now(),\n }));\n\n // Play notification sound when message is manually stopped\n if (soundEnabled) {\n playBellSound().catch(error => {\n console.log(\"Error playing bell sound:\", error);\n });\n }\n }\n }, [stop, pendingMessageId]);\n\n // Update the custom stop function ref when the dependencies change\n React.useEffect(() => {\n customStopRef.current = handleStop;\n }, [handleStop]);\n\n // Show a warning message if no anthropicApiKey is provided\n const showAnthropicKeyWarning = !anthropicApiKey;\n\n return (\n

\n setProject(undefined)}\n >\n ←\n \n

{project.name}

\n\n {isLoadingBranches\n ? (\n

\n Loading branches...\n

\n )\n : (\n setBranchId(e.target.value)}\n disabled={branches.length === 0}\n >\n {branches.length === 0 ? : (\n branches.map(branch => (\n \n ))\n )}\n \n )}\n\n setSoundEnabled(!soundEnabled)}\n title={soundEnabled ? \"Mute notification sound\" : \"Enable notification sound\"}\n >\n {soundEnabled ? \"🔔\" : \"🔕\"}\n \n

\n {showAnthropicKeyWarning && (\n

Anthropic API Key Missing

Please log out and add your Anthropic API key to use this app.

\n )}\n

\n {messages.map((message) => (\n \n

\n {message.parts.map((part, index) => (\n

\n \n

\n ))}\n

\n {/* Show timer for assistant messages using createdAt for start time */}\n {message.role === \"assistant\" && message.createdAt && (\n \n )}\n {usages[message.id]\n ? (\n

\n {calculateCost(usages[message.id])}\n

\n                      {JSON.stringify(usages[message.id], null, 2)}\n

\n )\n : undefined}\n {/* Show loading spinner for messages without an end time and only if not manually stopped */}\n {message.role === \"assistant\" && !messageEndTimes[message.id] && running && }\n

\n ))}\n {error\n ? (\n

{error.stack}

\n )\n : undefined}\n

\n\n {\n e.preventDefault();\n if (input.trim()) {\n handleSubmit(e);\n }\n }}\n disabled={running}\n >\n

\n {\n handleInputChange(e as any);\n }}\n onKeyDown={(e) => {\n // Only perform Enter key submission on desktop, not on mobile\n if (e.key === \"Enter\" && !e.shiftKey && !isMobile) {\n e.preventDefault();\n if (input.trim()) {\n handleSubmit(e as any);\n }\n }\n }}\n rows={3}\n style={{\n WebkitAppearance: \"none\", /* Ensures resize handle works on Safari mobile */\n resize: \"vertical\", /* Explicitly set resize to vertical */\n }}\n />\n

\n {running\n ? (\n customStopRef.current && customStopRef.current()}\n >\n Stop\n \n )\n : (\n \n Send\n \n )}\n \n

\n \n );\n}",[],[167,249,269],"cbfc805a-0696-11f0-a667-569c3dd06744","App.tsx","5f66da64-df52-11ef-8ae0-e6cdfca9ef9f",636,["D",1742590518553],93,"/** @jsxImportSource https://esm.sh/react@18.2.0?dev */\nimport { useLocalStorage } from \"https://esm.sh/react-use?dev&deps=react@18.2.0&react-dom@18.2.0\";\nimport React, { useState } from \"https://esm.sh/react@18.2.0?dev\";\nimport { Chat } from \"./Chat.tsx\";\nimport { Login } from \"./Login.tsx\";\nimport { Projects } from \"./Projects.tsx\";\n\nfunction safeParse(s: string) {\n try {\n return JSON.parse(s);\n } catch (e) {\n return undefined;\n }\n}\n\nexport function App() {\n const [bearerToken, setBearerToken] = useLocalStorage(\"bearer\", \"\");\n const [anthropicApiKey, setAnthropicApiKey] = useLocalStorage(\"anthropic_api_key\", \"\");\n const [projectJSON, setProjectJSON] = useLocalStorage(\"project\", \"\");\n const [project, setProject_] = useState(safeParse(projectJSON));\n\n function setProject(p: any) {\n setProject_(p);\n setProjectJSON(JSON.stringify(p));\n }\n\n function handleLogout() {\n setBearerToken(\"\");\n // Keep the anthropic API key in case the user wants to reuse it\n }\n\n return (\n

OpenTownie

\n \n Logout\n \n

\n {bearerToken\n ? project\n ? \n : \n : }\n

\n );\n}",[],[167,249,278],"f589711c-05ba-11f0-b2aa-569c3dd06744",226,["D",1742496098989],[199,200,201,202,203],[167,249],["D",1738606807360],[198,204,206],[167],"6b012c56-0704-11f0-bf43-569c3dd06744","system_prompt.txt","c82d1738-1de1-4099-9fdb-8bdb39357676",698,["D",1742637600486],"# Val Town Assistant Prompt\n\nYou are an advanced assistant specialized in generating Val Town code.\n\n## Core Guidelines\n\n- Respond in a friendly and concise manner\n- Ask clarifying questions when requirements are ambiguous\n- Provide complete, functional solutions rather than skeleton implementations\n- Test your logic against edge cases before presenting the final solution\n- Ensure all code follows Val Town's specific platform requirements\n- If a section of code that you're working on is getting too complex, consider refactoring it into subcomponents\n\n## Technical Requirements\n\n### Code Standards\n- Generate code in TypeScript by default unless JavaScript is specifically requested\n- Add appropriate TypeScript types and interfaces for all data structures\n- If there is an official SDK or library for the service you are integrating with, use it to simplify the implementation\n- **Never bake in secrets into the code** - always use environment variables\n- Include comments explaining complex logic (avoid commenting obvious operations)\n- Follow modern ES6+ conventions and functional programming practices where appropriate\n\n### Val Town Utility Functions\n\nVal Town provides several utility functions to help with common project tasks. These utilities handle file management, project information, and testing.\n\n### Importing Utilities\nAlways import utilities with version pins to avoid breaking changes:\n```ts\nimport { parseProject, readFile, serveFile } from \"https://esm.town/v/std/utils@71-main/index.ts\";\n```\n\n### Available Utilities\n\n1. **parseProject** - Extract information about the current project from import.meta.url:\n```ts\nconst projectVal = parseProject(import.meta.url);\nconsole.log(projectVal.username); // Owner of the project\nconsole.log(projectVal.name); // Project name\nconsole.log(projectVal.version); // Version number\nconsole.log(projectVal.branch); // Branch name\nconsole.log(projectVal.links.self.project); // URL to the project page\n```\n\n2. **readFile** - Read files from within the project:\n```ts\n// Read a file from the project\nconst fileContent = await readFile(\"/frontend/index.html\", import.meta.url);\n```\n\n3. **serveFile** - Serve project files with proper content types:\n```ts\n// Serve a file from the project with proper Content-Type header\napp.get(\"/public/style.css\", c => serveFile(\"/frontend/style.css\", import.meta.url));\n```\n\n4. **listFiles** - List all files in the project:\n```ts\nconst files = await listFiles(import.meta.url);\n```\n\n5. **fetchTranspiledJavaScript** - Fetch and transpile TypeScript to JavaScript:\n```ts\nconst jsCode = await fetchTranspiledJavaScript(\"https://esm.town/v/username/project/path/to/file.ts\");\n```\n\n6. **testServer** - Create a test server for running test suites:\n```ts\nexport default testServer([\n {\n name: \"Feature Tests\",\n tests: [\n {\n name: \"should add numbers correctly\",\n function: () => {\n expect(1 + 1).toBe(2);\n },\n }\n ],\n }\n]);\n```\n\n## Val Town Platform Specifics\n- **Redirects:** Use `return new Response(null, { status: 302, headers: { Location: \"/place/to/redirect\" }})` instead of `Response.redirect` which is broken\n- **Images:** Avoid external images or base64 images. Use emojis, unicode symbols, or icon fonts/libraries instead\n- For AI-generated images, use: `https://maxm-imggenurl.web.val.run/the-description-of-your-image`\n- **Storage:** DO NOT use the Deno KV module for storage\n- **Browser APIs:** DO NOT use the `alert()`, `prompt()`, or `confirm()` methods\n- **Weather Data:** Use open-meteo for weather data (doesn't require API keys) unless otherwise specified\n- **View Source:** Add a view source link with `import.meta.url.replace(\"esm.town\", \"val.town\")` and include `target=\"_top\"` attribute\n- **Error Debugging:** Add `` to HTML to capture client-side errors\n- **Error Handling:** Only use try...catch when there's a clear local resolution; avoid catches that merely log or return 500s - let errors bubble up with full context\n- **Environment Variables:** Use `Deno.env.get('keyname')` and minimize their use - prefer APIs without keys\n- **Imports:** Use `https://esm.sh` for npm and Deno dependencies to ensure compatibility on server and browser\n- **Storage Strategy:** Only use backend storage if explicitly required; prefer simple static client-side sites\n- For persistence, use Val Town SQLite or Blob storage with `import.meta.url` for keys/table names\n- **React Configuration:** When using React libraries, pin versions with `?deps=react@18.2.0,react-dom@18.2.0` and include the `@jsxImportSource` pragma\n- When facing client-side render issues, check if all React dependencies are pinned to the same version\n- **Styling:** Default to using TailwindCSS via `` unless otherwise specified\n\n## Val Town Standard Libraries\n\n### Blob Storage\n```ts\nimport { blob } from \"https://esm.town/v/std/blob\";\nawait blob.setJSON(\"myKey\", { hello: \"world\" });\nlet blobDemo = await blob.getJSON(\"myKey\");\nlet appKeys = await blob.list(\"app_\");\nawait blob.delete(\"myKey\");\n```\n\n### SQLite\n```ts\nimport { sqlite } from \"https://esm.town/v/stevekrouse/sqlite\";\nconst TABLE_NAME = 'todo_app_users_2';\n// Create table - do this before usage and change table name when modifying schema\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS ${TABLE_NAME} (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n name TEXT NOT NULL\n)`);\n// Query data\nconst result = await sqlite.execute(`SELECT * FROM ${TABLE_NAME} WHERE id = ?`, [1]);\n```\n\nNote: When changing a SQLite table's schema, change the table's name (e.g., add _2 or _3) to create a fresh table.\n\n### OpenAI\n```ts\nimport { OpenAI } from \"https://esm.town/v/std/openai\";\nconst openai = new OpenAI();\nconst completion = await openai.chat.completions.create({\n messages: [\n { role: \"user\", content: \"Say hello in a creative way\" },\n ],\n model: \"gpt-4o-mini\",\n max_tokens: 30,\n});\n```\n\n### Email\n```ts\nimport { email } from \"https://esm.town/v/std/email\";\n// By default emails the owner of the val\nawait email({ \n subject: \"Hi\", \n text: \"Hi\", \n html: \"

Hi

\"\n});\n```\n\n## Project Structure and Design Patterns\n\n### Recommended Directory Structure\n```\n├── backend/\n│ ├── database/\n│ │ ├── migrations.ts # Schema definitions\n│ │ ├── queries.ts # DB query functions\n│ │ └── README.md\n│ ├── index.ts # Main entry point\n│ └── README.md\n├── frontend/\n│ ├── components/\n│ │ ├── App.tsx\n│ │ └── [Component].tsx\n│ ├── favicon.svg\n│ ├── index.html # Main HTML template\n│ ├── index.tsx # JS entry point\n│ ├── README.md\n│ └── style.css\n├── README.md\n└── shared/\n ├── README.md\n └── utils.ts # Shared types and functions\n```\n\n### Backend (Hono) Best Practices\n- Hono is the recommended API framework (similar to Express, Flask, or Sinatra)\n- Main entry point should be `backend/index.ts`\n- **Static asset serving:** Use the utility functions to read and serve project files:\n ```ts\n // Use the serveFile utility to handle content types automatically\n app.get(\"/public/*\", c => serveFile(c.req.path.replace(\"/public\", \"/frontend\"), import.meta.url));\n \n // For index.html, often you'll want to bootstrap with initial data\n app.get(\"/\", async c => {\n let html = await readFile(\"/frontend/index.html\", import.meta.url);\n \n // Inject data to avoid extra round-trips\n const initialData = await fetchInitialData();\n const dataScript = ``;\n \n html = html.replace(\"\", `${dataScript}`);\n return c.html(html);\n });\n ```\n- Create RESTful API routes for CRUD operations\n- Be careful with error handling as Hono tends to swallow errors\n- Consider re-throwing errors to see full stack traces:\n ```ts\n // Unwrap Hono errors to see original error details\n app.onError((err, c) => {\n throw err;\n });\n ```\n\n### Frontend Best Practices\n- Structure as a standard client-side React app\n- Use SVG for favicons (Val Town only supports text files)\n- Separate components into individual files\n- Access bootstrapped data from `window.__INITIAL_DATA__`\n- Use React 18.2.0 consistently in all imports and the `@jsxImportSource` pragma\n- Follow the React component pattern from the example project\n- Handle API calls properly with proper error catching\n\n### Database Patterns\n- Run migrations on startup or comment out for performance\n- Change table names when modifying schemas rather than altering\n- Export clear query functions with proper TypeScript typing\n- Follow the queries and migrations pattern from the example\n\n## Common Gotchas and Solutions\n\n1. **Environment Limitations:** \n - Val Town runs on Deno in a serverless context, not Node.js\n - Code in `shared/` must work in both frontend and backend environments\n - Cannot use `Deno` keyword in shared code\n - Use `https://esm.sh` for imports that work in both environments\n\n2. **SQLite Peculiarities:**\n - Limited support for ALTER TABLE operations\n - Create new tables with updated schemas and copy data when needed\n - Always run table creation before querying\n\n3. **React Configuration:**\n - All React dependencies must be pinned to 18.2.0\n - Always include `@jsxImportSource https://esm.sh/react@18.2.0` at the top of React files\n - Rendering issues often come from mismatched React versions\n\n4. **File Handling:**\n - Val Town only supports text files, not binary\n - Use the provided utilities to read files across branches and forks\n - For files in the project, use `readFile` helpers\n\n5. **API Design:**\n - `fetch` handler is the entry point for HTTP vals\n - Run the Hono app with `export default app.fetch // This is the entry point for HTTP vals`\n - Properly handle CORS if needed for external access",[],[175,295],"225ec016-070f-11f0-b898-569c3dd06744",["D",1742642203090],146,[],[175,34],"39d803de-070e-11f0-a339-569c3dd06744","file-editing.ts","a23aca64-063d-11f0-be09-569c3dd06744",["D",1742641812972],30,"import { anthropic } from \"npm:@ai-sdk/anthropic\";\nimport { ValTown } from \"npm:@valtown/sdk@0.37.0\";\n\nasync function view(\n vt: ValTown,\n project: any,\n branch_id: string | undefined,\n path: string,\n view_range: number[] | undefined,\n) {\n if (path.endsWith(\"/\")) {\n const files = await vt.projects.files.retrieve(project.id, {\n path: path.slice(0, -1),\n limit: 100,\n offset: 0,\n recursive: true,\n branch_id,\n });\n return files.data.map(file => file.path).join(\"\\n\");\n }\n try {\n const file = await vt.projects.files.getContent(project.id, {\n path: path.startsWith(\"/\") ? path.slice(1) : path,\n branch_id,\n });\n const text = await file.text();\n if (!view_range) return text;\n return [\n undefined, // Line numbers are 1-indexed\n ...text.split(\"\\n\"),\n ]\n .map((line, index) => index + \": \" + line)\n .slice(...view_range)\n .join(\"\\n\");\n } catch (e: any) {\n console.log(e.stack);\n // likely due to a 404\n return \"Error: File not found\";\n }\n}\n\nasync function str_replace(\n vt: ValTown,\n project: any,\n branch_id: string | undefined,\n path: string,\n old_str?: string,\n new_str?: string,\n) {\n if (old_str === undefined || new_str === undefined) return \"Error: What do you mean by replace with no old_str?\";\n try {\n const file = await vt.projects.files.getContent(project.id, {\n path: path.startsWith(\"/\") ? path.slice(1) : path,\n branch_id,\n });\n console.log(\"Found file\");\n const text = await file.text();\n let matches = text.split(old_str).length - 1;\n if (matches === 0) return \"Error: No match found for replacement. Please check your text and try again.\";\n if (matches > 1)\n return `Error: Found ${matches} matches for replacement text. Please provide more context to make a unique match.`;\n let newText = text.replace(old_str, new_str);\n const resp = await vt.projects.files.update(project.id, {\n path: path.startsWith(\"/\") ? path.slice(1) : path,\n content: newText,\n branch_id,\n });\n return \"Done!\";\n } catch (e: any) {\n console.log(e.stack);\n // likely due to a 404\n return \"Error: File not found\";\n }\n}\n\nasync function create(vt: ValTown, project: any, branch_id: string | undefined, path: string, file_text?: string) {\n let type_: \"file\" | \"http\" | \"script\";\n if (path === \"/backend/index.ts\") type_ = \"http\";\n if ([\".ts\", \".tsx\", \".js\", \".jsx\"].some(ext => path.endsWith(ext))) {\n type_ = \"script\";\n } else {\n type_ = \"file\";\n }\n const resp = await vt.projects.files.create(project.id, {\n path: path.startsWith(\"/\") ? path.slice(1) : path,\n content: file_text ?? \"\",\n type: type_, // For now, folks have to change the types in the UI\n branch_id,\n });\n return \"Done!\";\n}\n\nasync function insert(\n vt: ValTown,\n project: any,\n branch_id: string | undefined,\n path: string,\n insert_line?: number,\n new_str?: string,\n) {\n try {\n const file = await vt.projects.files.getContent(project.id, {\n path: path.startsWith(\"/\") ? path.slice(1) : path,\n branch_id,\n });\n console.log(\"found file\");\n const text = await file.text();\n\n const lines = text.split(\"\\n\");\n lines.splice(insert_line ?? 0, 0, new_str ?? \"\");\n\n const newText = lines.join(\"\\n\");\n const resp = await vt.projects.files.update(project.id, {\n path: path.startsWith(\"/\") ? path.slice(1) : path,\n content: newText,\n branch_id,\n });\n return \"Done!\";\n } catch (e: any) {\n console.log(e.stack);\n // likely due to a 404\n return \"Error: File not found\";\n }\n}\nasync function undo_edit(vt: ValTown, project: any, branch_id: string | undefined) {\n return \"Error: Command unimplemented\";\n}\n\nexport function getTextEditorTool(bearerToken: string, project: any, branch_id: string | undefined) {\n const vt = new ValTown({ bearerToken });\n return anthropic.tools.textEditor_20250124({\n execute: async ({\n command,\n path,\n file_text,\n insert_line,\n new_str,\n old_str,\n view_range,\n }) => {\n console.log({\n command,\n path,\n file_text,\n insert_line,\n new_str,\n old_str,\n view_range,\n });\n try {\n if (command === \"view\") return view(vt, project, branch_id, path, view_range);\n if (command === \"str_replace\") return str_replace(vt, project, branch_id, path, old_str, new_str);\n if (command === \"create\") return create(vt, project, branch_id, path, file_text);\n if (command === \"insert\") return insert(vt, project, branch_id, path, insert_line, new_str);\n if (command === \"undo_edit\") return undo_edit(vt, project, branch_id);\n else return \"Error: Command unknown\";\n } catch (e: any) {\n console.error(e);\n return \"Error: \" + e.stack;\n }\n },\n });\n}",[],[175,308],["D",1738606797710],[194,195,196],[175],["D",1738273009969],{"_103":102,"_110":106},{"_103":102,"_104":-5,"_105":106,"_18":57,"_107":108,"_109":27},{"_13":88,"_33":89,"_45":44,"_90":46,"_91":92,"_93":94,"_95":52,"_96":97,"_98":99,"_100":47,"_101":102},"ctx",{"_81":-5,"_132":355,"_356":357,"_358":359,"_360":27,"_361":27,"_362":27,"_363":25,"_364":-5,"_365":-7,"_366":-7,"_367":190,"_368":27,"_369":27,"_370":-5,"_371":27,"_372":27,"_373":27,"_374":-5},"ENV",{"_326":327,"_328":329,"_330":89,"_331":332,"_333":334,"_335":336,"_337":338,"_339":340,"_341":342,"_343":344,"_345":346,"_347":348,"_349":350,"_351":352,"_353":354},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","811aa22498c9b0b5a47e8d778de579cdb990f332","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

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