CTRL

\n >\n \n \n

\n\n\n`;\n}\n\n// --- BACKEND LOGIC ---\n\nasync function callOpenAI(history: any[]) {\n const openai = new OpenAI();\n const completion = await openai.chat.completions.create({\n model: \"gpt-4o\",\n messages: [\n { role: \"system\", content: STORYTELLER_PROMPT },\n ...history,\n ],\n temperature: 0.9,\n response_format: { type: \"json_object\" },\n });\n return JSON.parse(completion.choices[0].message.content);\n}\n\nexport default async function(req: Request) {\n const url = new URL(req.url);\n const action = url.searchParams.get(\"action\");\n\n // --- Serve Frontend on GET ---\n if (req.method === \"GET\") {\n const sourceUrl = `https://${url.hostname}${url.pathname}`;\n return new Response(generateHtml(sourceUrl), {\n headers: { \"Content-Type\": \"text/html\" },\n });\n }\n\n // --- Handle Game Actions on POST ---\n if (req.method === \"POST\") {\n try {\n const body = await req.json();\n let { sessionId } = body;\n\n switch (action) {\n case \"start\": {\n let gameState: GameState;\n if (sessionId) {\n gameState = await blob.getJSON(getGameStateKey(sessionId));\n if (gameState) {\n const lastAssistantResponse = JSON.parse(\n gameState.history[gameState.history.length - 1].content,\n );\n return new Response(JSON.stringify(lastAssistantResponse), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n }\n sessionId = crypto.randomUUID();\n const userMessage = \"The Operator has connected. Begin the story.\";\n const assistantResponse = await callOpenAI([{ role: \"user\", content: userMessage }]);\n gameState = {\n sessionId,\n history: [\n { role: \"user\", content: userMessage },\n { role: \"assistant\", content: JSON.stringify(assistantResponse) },\n ],\n lastUpdated: new Date().toISOString(),\n };\n await blob.setJSON(getGameStateKey(sessionId), gameState);\n return new Response(JSON.stringify({ ...assistantResponse, sessionId }), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n\n case \"action\": {\n if (!sessionId) throw new Error(\"Session ID is missing.\");\n const gameState: GameState = await blob.getJSON(getGameStateKey(sessionId));\n if (!gameState) throw new Error(\"Session not found or expired.\");\n\n const userMessage = `The Operator issues the command: \"${body.choice}\"`;\n gameState.history.push({ role: \"user\", content: userMessage });\n\n const assistantResponse = await callOpenAI(gameState.history);\n gameState.history.push({ role: \"assistant\", content: JSON.stringify(assistantResponse) });\n gameState.lastUpdated = new Date().toISOString();\n\n await blob.setJSON(getGameStateKey(sessionId), gameState);\n return new Response(JSON.stringify(assistantResponse), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n\n case \"reset\": {\n if (sessionId) {\n await blob.delete(getGameStateKey(sessionId));\n }\n return new Response(JSON.stringify({ message: \"Session reset\" }), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n\n default:\n throw new Error(\"Invalid action.\");\n }\n } catch (error) {\n console.error(\"Game Error:\", error);\n return new Response(JSON.stringify({ error: error.message }), {\n status: 500,\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n }\n\n return new Response(\"Method Not Allowed\", { status: 405 });\n}","deleted","label",[98],"permalink","https://www.val.town/x/join/text/code/main.tsx","extension","actionData","errors"]