feat: MockupGenerator UI component with generate/regenerate/upload flow

src/components/mockup/MockupGenerator.tsx

@@ -0,0 +1,170 @@
+'use client'
+import { useState, useEffect } from 'react'
+import type { MockupTemplate } from '@/types/mockup'
+
+interface Props {
+  productCutoutBase64: string
+  productName: string
+  shopifyId?: string
+  family: string
+  dimensions?: string
+  onUploaded?: (url: string) => void
+}
+
+export function MockupGenerator({ productCutoutBase64, productName, shopifyId, family, dimensions, onUploaded }: Props) {
+  const [templates, setTemplates] = useState<MockupTemplate[]>([])
+  const [selectedTemplate, setSelectedTemplate] = useState<string | null>(null)
+  const [instruction, setInstruction] = useState('')
+  const [generating, setGenerating] = useState(false)
+  const [resultB64, setResultB64] = useState<string | null>(null)
+  const [uploading, setUploading] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+  const [uploadedUrl, setUploadedUrl] = useState<string | null>(null)
+
+  useEffect(() => {
+    fetch('/api/mockup/templates')
+      .then(r => r.json())
+      .then((data: MockupTemplate[]) => {
+        const filtered = data.filter(t => !family || t.family === family || t.family === 'Tous')
+        setTemplates(filtered.length > 0 ? filtered : data)
+      })
+  }, [family])
+
+  const generate = async () => {
+    if (!selectedTemplate) return
+    setGenerating(true)
+    setError(null)
+    setResultB64(null)
+    try {
+      const res = await fetch('/api/mockup/generate', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          templateId: selectedTemplate,
+          productImageBase64: productCutoutBase64,
+          productName,
+          family,
+          dimensions: dimensions || undefined,
+          instruction: instruction || undefined,
+        }),
+      })
+      const data = await res.json()
+      if (!res.ok) throw new Error(data.error)
+      setResultB64(data.imageBase64)
+    } catch (e) {
+      setError(e instanceof Error ? e.message : 'Erreur')
+    } finally {
+      setGenerating(false)
+    }
+  }
+
+  const upload = async () => {
+    if (!resultB64 || !shopifyId) return
+    setUploading(true)
+    try {
+      const filename = `${productName.toLowerCase().replace(/\s+/g, '-')}-mockup.jpg`
+      const res = await fetch('/api/images/upload', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ shopifyProductId: shopifyId, imageBase64: resultB64, filename }),
+      })
+      const data = await res.json()
+      if (!res.ok) throw new Error(data.error)
+      setUploadedUrl(data.url)
+      onUploaded?.(data.url)
+    } catch (e) {
+      setError(e instanceof Error ? e.message : 'Erreur upload')
+    } finally {
+      setUploading(false)
+    }
+  }
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <label className="block text-xs text-gray-400 mb-2">Template de mise en ambiance</label>
+        {templates.length === 0 ? (
+          <p className="text-xs text-gray-500">Aucun template disponible — ajoutez-en dans la bibliothèque.</p>
+        ) : (
+          <div className="grid grid-cols-2 gap-2">
+            {templates.map(t => (
+              <button
+                key={t.id}
+                type="button"
+                onClick={() => setSelectedTemplate(t.id)}
+                className={`relative rounded-lg overflow-hidden border-2 transition-all ${selectedTemplate === t.id ? 'border-indigo-500' : 'border-slate-600 hover:border-slate-400'}`}
+              >
+                <img
+                  src={`/api/mockup/templates/image/${t.filename}`}
+                  alt={t.name}
+                  className="w-full h-24 object-cover"
+                />
+                <div className="absolute bottom-0 left-0 right-0 bg-black/60 px-2 py-1">
+                  <p className="text-xs text-white truncate">{t.name}</p>
+                </div>
+              </button>
+            ))}
+          </div>
+        )}
+      </div>
+
+      {dimensions ? (
+        <p className="text-xs text-green-400">Dimensions : {dimensions}</p>
+      ) : (
+        <p className="text-xs text-amber-400">Dimensions non renseignées — le mockup peut ne pas être à l&apos;échelle.</p>
+      )}
+
+      <button
+        type="button"
+        onClick={generate}
+        disabled={!selectedTemplate || generating}
+        className="w-full py-2 px-4 rounded-lg bg-indigo-600 text-white text-sm font-medium disabled:opacity-40 hover:bg-indigo-500 transition-colors"
+      >
+        {generating ? 'Génération en cours…' : 'Générer le mockup'}
+      </button>
+
+      {error && <p className="text-xs text-red-400">{error}</p>}
+
+      {resultB64 && (
+        <div className="space-y-3">
+          <img
+            src={`data:image/jpeg;base64,${resultB64}`}
+            alt="Mockup généré"
+            className="w-full rounded-lg border border-slate-600"
+          />
+
+          <div className="flex gap-2">
+            <input
+              type="text"
+              value={instruction}
+              onChange={e => setInstruction(e.target.value)}
+              placeholder="Instruction supplémentaire (optionnel)…"
+              className="flex-1 bg-slate-700 border border-slate-600 rounded px-2 py-1.5 text-xs text-white focus:outline-none focus:ring-1 focus:ring-indigo-500"
+            />
+            <button
+              type="button"
+              onClick={generate}
+              disabled={generating}
+              className="px-3 py-1.5 rounded bg-slate-600 text-xs text-white hover:bg-slate-500 disabled:opacity-40"
+            >
+              {generating ? '…' : '↺ Regénérer'}
+            </button>
+          </div>
+
+          {uploadedUrl ? (
+            <p className="text-xs text-green-400">✓ Uploadé sur Shopify</p>
+          ) : (
+            <button
+              type="button"
+              onClick={upload}
+              disabled={uploading || !shopifyId}
+              className="w-full py-2 px-4 rounded-lg bg-emerald-600 text-white text-sm font-medium disabled:opacity-40 hover:bg-emerald-500 transition-colors"
+            >
+              {uploading ? 'Upload…' : shopifyId ? '↑ Uploader sur Shopify' : 'Produit Shopify requis pour uploader'}
+            </button>
+          )}
+        </div>
+      )}
+    </div>
+  )
+}