Drywall AI Assistant

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AI is analyzing...

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\n\n\n\n`;\n}\n\n// --- BACKEND LOGIC (VAL TOWN HANDLER) ---\n\nexport default async function(req: Request) {\n const url = new URL(req.url);\n\n // Serve the frontend for GET requests\n if (req.method === \"GET\") {\n return new Response(generateHtml(url.href), {\n headers: { \"Content-Type\": \"text/html; charset=utf-g\" },\n });\n }\n\n // Handle API POST requests\n if (req.method === \"POST\") {\n const openai = new OpenAI();\n let body;\n\n try {\n body = await req.json();\n const action = body.action;\n\n let messages = [];\n let model = \"gpt-4o\";\n\n switch (action) {\n case \"estimate\":\n messages.push(\n { role: \"system\", content: ESTIMATOR_PROMPT },\n {\n role: \"user\",\n content:\n `Dimensions (LxWxH): ${body.length}x${body.width}x${body.height} ft. Openings: ${body.openings}. Finish Level: ${body.finish_level}.`,\n },\n );\n break;\n\n case \"analyzeImage\":\n if (!body.image) {\n throw new Error(\"Image data is missing from the request.\");\n }\n messages.push(\n { role: \"system\", content: VISUAL_ANALYZER_PROMPT },\n {\n role: \"user\",\n content: [\n { type: \"text\", text: \"Analyze this drywall defect.\" },\n {\n type: \"image_url\",\n image_url: {\n url: `data:image/jpeg;base64,${body.image}`,\n },\n },\n ],\n },\n );\n break;\n\n case \"safetyCheck\":\n messages.push(\n { role: \"system\", content: SAFETY_PROMPT },\n { role: \"user\", content: `Job site conditions: ${body.conditions}` },\n );\n break;\n\n case \"calculateMix\":\n messages.push(\n { role: \"system\", content: MIXING_PROMPT },\n {\n role: \"user\",\n content:\n `Compound: ${body.compound_type}, Temperature: ${body.temperature}°F, Humidity: ${body.humidity}%.`,\n },\n );\n break;\n\n case \"getFinishRecommendation\":\n messages.push(\n { role: \"system\", content: FINISHING_CONSULTANT_PROMPT },\n { role: \"user\", content: `Project description: \"${body.description}\"` },\n );\n break;\n\n default:\n throw new Error(\"Invalid action specified.\");\n }\n\n const completion = await openai.chat.completions.create({\n model: model,\n messages: messages,\n temperature: 0.2, // Lower temp for more factual, less creative responses\n response_format: { type: \"json_object\" },\n });\n\n const content = completion.choices[0].message.content;\n\n // Sanity check: ensure AI response is valid JSON\n JSON.parse(content);\n\n return new Response(content, {\n headers: { \"Content-Type\": \"application/json\" },\n });\n } catch (error) {\n console.error(`Drywall AI Error (${body?.action}):`, error);\n return new Response(JSON.stringify({ error: error.message || \"An internal server error occurred.\" }), {\n status: 500,\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n }\n\n // Fallback for other methods\n return new Response(\"Method not allowed.\", { status: 405 });\n}","deleted","label",[98],"permalink","https://www.val.town/x/join/drywall/code/main.tsx","extension","actionData","errors"]