v1.0
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lejay
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/**
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* AI Design Advisor — GPT-4o powered design tips, material recommendations, and DALL-E 3 renders
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* Helps customers feel confident about their wardrobe design choices.
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*/
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import OpenAI from 'openai';
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import crypto from 'crypto';
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let openaiClient = null;
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function getOpenAIClient() {
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if (!openaiClient) {
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if (!process.env.OPENAI_API_KEY) {
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throw new Error('OPENAI_API_KEY is not configured. Add it to server/.env');
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}
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openaiClient = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });
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}
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return openaiClient;
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}
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/* -------------------------------------------------------------------------- */
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/* 1. Design Tips (GPT-4o text) */
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/* -------------------------------------------------------------------------- */
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const DESIGN_TIP_PROMPT = `Tu es un designer d'intérieur suisse spécialisé dans les armoires sur mesure haut de gamme.
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À partir de la configuration ci-dessous, donne UN SEUL conseil ou commentaire positif en 1-2 phrases maximum.
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Le ton doit être chaleureux, professionnel et encourageant — le client doit se sentir confiant dans son choix.
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Varie tes réponses : parfois un compliment sur la combinaison, parfois un conseil pratique, parfois une info sur les tendances.
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Réponds UNIQUEMENT en JSON :
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{ "tip": "…votre conseil en français…", "category": "compliment" | "conseil" | "tendance" }`;
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/**
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* Generate a design tip for the current configuration
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* @param {object} config - { width, height, depth, columns (array of {type, shelves, drawers, hasRod}), material, installationType }
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* @returns {{ tip: string, category: string }}
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*/
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export async function getDesignTip(config) {
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const client = getOpenAIClient();
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const configSummary = buildConfigSummary(config);
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const response = await client.chat.completions.create({
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model: 'gpt-4o',
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temperature: 0.9,
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max_tokens: 200,
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messages: [
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{ role: 'system', content: DESIGN_TIP_PROMPT },
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{ role: 'user', content: configSummary }
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],
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response_format: { type: 'json_object' }
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});
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const raw = response.choices[0]?.message?.content;
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try {
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return JSON.parse(raw);
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} catch {
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return { tip: raw, category: 'conseil' };
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}
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}
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/* -------------------------------------------------------------------------- */
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/* 2. Material Recommendations (GPT-4o) */
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/* -------------------------------------------------------------------------- */
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const MATERIAL_REC_PROMPT = `Tu es un conseiller en matériaux et couleurs pour armoires sur mesure suisses haut de gamme.
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À partir de la configuration actuelle et de la liste de matériaux disponibles, recommande 3 à 5 matériaux qui iraient parfaitement ensemble.
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Critères de recommandation :
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- Harmonie des couleurs avec les matériaux déjà sélectionnés
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- Cohérence avec le style d'armoire (dimensions, configuration)
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- Tendances actuelles en design d'intérieur suisse
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- Si un contexte de pièce est fourni, s'accorder avec le style de la pièce
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Réponds UNIQUEMENT en JSON :
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{
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"recommendations": [
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{ "finishId": <number>, "reason": "…raison courte en français…" }
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]
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}`;
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/**
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* Recommend materials that complement the current configuration
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* @param {object} config - Current wardrobe configuration
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* @param {Array} availableFinishes - [{ id, name, collection, code }]
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* @param {object} [roomAnalysis] - Optional room photo analysis
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* @returns {{ recommendations: Array<{ finishId: number, reason: string }> }}
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*/
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export async function recommendMaterials(config, availableFinishes, roomAnalysis) {
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const client = getOpenAIClient();
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const configSummary = buildConfigSummary(config);
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// Compact finish list (only names + ids to save tokens)
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const finishList = availableFinishes
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.slice(0, 80) // limit to avoid token overflow
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.map(f => `${f.id}: ${f.name || f.label} (${f.collection || '?'})`)
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.join('\n');
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let userMessage = `CONFIGURATION ACTUELLE:\n${configSummary}\n\nMATÉRIAUX DISPONIBLES:\n${finishList}`;
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if (roomAnalysis) {
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userMessage += `\n\nCONTEXTE PIÈCE:\n${JSON.stringify(roomAnalysis, null, 1)}`;
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}
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const response = await client.chat.completions.create({
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model: 'gpt-4o',
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temperature: 0.7,
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max_tokens: 400,
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messages: [
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{ role: 'system', content: MATERIAL_REC_PROMPT },
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{ role: 'user', content: userMessage }
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],
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response_format: { type: 'json_object' }
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});
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const raw = response.choices[0]?.message?.content;
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try {
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const parsed = JSON.parse(raw);
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return { recommendations: (parsed.recommendations || []).slice(0, 5) };
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} catch {
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return { recommendations: [] };
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}
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}
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/* -------------------------------------------------------------------------- */
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/* 3. Photorealistic Render (DALL-E 3) */
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/* -------------------------------------------------------------------------- */
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// Simple in-memory render cache (config hash → image URL)
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const renderCache = new Map();
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/**
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* Generate a photorealistic render of the configured wardrobe using DALL-E 3
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* @param {object} config - Current wardrobe configuration
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* @param {object} [roomContext] - Optional room analysis for context
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* @returns {{ imageUrl: string, cached: boolean }}
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*/
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export async function generateRender(config, roomContext) {
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const client = getOpenAIClient();
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// Cache by config hash
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const hash = crypto.createHash('md5').update(JSON.stringify(config)).digest('hex');
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if (renderCache.has(hash)) {
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return { imageUrl: renderCache.get(hash), cached: true };
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}
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const prompt = buildRenderPrompt(config, roomContext);
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const response = await client.images.generate({
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model: 'dall-e-3',
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prompt,
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n: 1,
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size: '1792x1024',
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quality: 'hd',
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style: 'natural'
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});
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const imageUrl = response.data[0]?.url;
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if (imageUrl) {
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renderCache.set(hash, imageUrl);
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// Auto-evict after 30 minutes (DALL-E URLs expire after ~1h)
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setTimeout(() => renderCache.delete(hash), 30 * 60 * 1000);
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}
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return { imageUrl, cached: false };
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}
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/* -------------------------------------------------------------------------- */
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/* Helpers */
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/* -------------------------------------------------------------------------- */
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function buildConfigSummary(config) {
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const columns = (config.columns || config.modules || [])
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.map((c, i) => ` Colonne ${i + 1}: ${c.type || c.moduleCode || '?'} — ${c.width || '?'}mm, ${c.shelves || 0} étagères, ${c.drawers || 0} tiroirs${c.hasRod ? ', tringle' : ''}`)
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.join('\n');
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return `Armoire sur mesure SIGNATURE
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Dimensions: ${config.width || '?'}mm × ${config.height || '?'}mm × ${config.depth || '?'}mm
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Installation: ${config.installationType || 'libre'}
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Colonnes:\n${columns}
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Matériau principal: ${config.materialName || config.finishLabel || 'non défini'}
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Portes: ${config.doorType || 'battantes'}`;
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}
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function buildRenderPrompt(config, roomContext) {
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const cols = (config.columns || config.modules || []);
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const colDesc = cols.map((c, i) => {
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const type = c.type || c.moduleCode || 'standard';
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const parts = [];
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if (c.hasRod) parts.push('a hanging rod');
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if (c.shelves > 0) parts.push(`${c.shelves} shelves`);
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if (c.drawers > 0) parts.push(`${c.drawers} drawers`);
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return `column ${i + 1}: ${type} with ${parts.join(', ') || 'empty space'}`;
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}).join('; ');
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const widthM = ((config.width || 2400) / 1000).toFixed(1);
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const heightM = ((config.height || 2400) / 1000).toFixed(1);
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let roomDesc = 'a modern, well-lit bedroom with neutral walls';
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if (roomContext) {
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const walls = roomContext.walls || [];
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const wallColors = walls.filter(w => w.color).map(w => w.color).join(', ');
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roomDesc = `a ${roomContext.roomType || 'bedroom'} with ${wallColors || 'neutral'} walls`;
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}
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return `Professional interior design photograph of a premium Swiss-made custom wardrobe in ${roomDesc}.
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The wardrobe is ${widthM}m wide and ${heightM}m tall, built-in style, with ${cols.length} columns: ${colDesc}.
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Material: ${config.materialName || 'light oak wood finish'}. Doors are ${config.doorType === 'coulissantes' ? 'sliding' : 'hinged'}, partially open to reveal the interior.
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Style: clean Scandinavian-Swiss aesthetic, warm natural lighting, photorealistic quality. Shot with a wide-angle lens at eye level.
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The wardrobe should look premium, well-crafted, and perfectly integrated into the room.`;
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}
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