Umbral Compendium

The Foundry

Define a form to coalesce from the umbra. Provide a subject.

\n \n \n

AI is interpreting the form...

\n\n\n`;\n}\n\n// --- VAL TOWN EXPORT ---\nexport default async function (req: Request) {\n const url = new URL(req.url);\n\n // --- API Endpoint for AI Prompt Generation ---\n if (url.pathname === \"/generatePrompts\" && req.method === \"POST\") {\n try {\n const openai = new OpenAI();\n const { subject } = await req.json();\n\n if (\n !subject || typeof subject !== \"string\" || subject.trim().length === 0\n ) {\n return new Response(\n JSON.stringify({ error: \"A valid subject is required.\" }),\n { status: 400 },\n );\n }\n\n const completion = await openai.chat.completions.create({\n model: \"gpt-4o\",\n messages: [\n { role: \"system\", content: PROMPT_GENERATOR_SYSTEM_PROMPT },\n { role: \"user\", content: `Subject: \"${subject}\"` },\n ],\n response_format: { type: \"json_object\" },\n });\n\n const aiResponse = completion.choices[0].message.content;\n\n // Robust extraction of JSON from potential chatter\n const jsonMatch = aiResponse.match(/{[\\s\\S]*}/);\n if (!jsonMatch) {\n throw new Error(\"AI response did not contain valid JSON.\");\n }\n const extractedJson = jsonMatch[0];\n\n // Validate the structure\n const parsed = JSON.parse(extractedJson);\n if (\n !parsed.mainPrompt || !Array.isArray(parsed.neighborPrompts) ||\n parsed.neighborPrompts.length !== 4\n ) {\n throw new Error(\"AI returned JSON with an invalid structure.\");\n }\n\n return new Response(extractedJson, {\n headers: { \"Content-Type\": \"application/json\" },\n });\n } catch (error) {\n console.error(\"AI Prompt Generation Error:\", error);\n return new Response(\n JSON.stringify({\n error: \"Failed to communicate with the AI.\",\n reason: error.message,\n }),\n {\n status: 500,\n headers: { \"Content-Type\": \"application/json\" },\n },\n );\n }\n }\n\n // --- Serve HTML for all other GET requests ---\n const sourceUrl = `https://${url.hostname}${\n url.pathname.endsWith(\"/\") ? url.pathname : url.pathname + \"/\"\n }`;\n return new Response(generateHtml(sourceUrl), {\n headers: { \"Content-Type\": \"text/html\" },\n });\n}","deleted","label",[98],"permalink","https://www.val.town/x/join/sil/code/main.tsx","extension","actionData","errors"]