feat: refactor mockup page with 3-step flow (product → image → template)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/(dashboard)/mockup/page.tsx

@@ -2,35 +2,66 @@
 import { useState, useEffect, useRef } from 'react'
 import { Header } from '@/components/layout/Header'
 import { TemplateLibrary } from '@/components/mockup/TemplateLibrary'
-import { MockupGenerator } from '@/components/mockup/MockupGenerator'
+import type { MockupTemplate } from '@/types/mockup'
 
 type Tab = 'generate' | 'library'
+type Step = 'product' | 'image' | 'template'
 
 interface Product {
   shopifyId: string
   title: string
   ref: string
-  famille?: string
-  longueur?: string
-  largeur?: string
+  images: string[]
+}
+
+function blobToBase64(blob: Blob): Promise<string> {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader()
+    reader.onload = () => resolve((reader.result as string).split(',')[1])
+    reader.onerror = reject
+    reader.readAsDataURL(blob)
+  })
 }
 
 export default function MockupPage() {
   const [tab, setTab] = useState<Tab>('generate')
+  const [step, setStep] = useState<Step>('product')
 
+  // Step 1 — product
   const [products, setProducts] = useState<Product[]>([])
   const [search, setSearch] = useState('')
   const [showDropdown, setShowDropdown] = useState(false)
   const [selectedProduct, setSelectedProduct] = useState<Product | null>(null)
-  const [family, setFamily] = useState('Menuiserie')
+  const [family, setFamily] = useState('')
+  const [placement, setPlacement] = useState('')
   const [dimensions, setDimensions] = useState('')
-  const [cutoutB64, setCutoutB64] = useState<string | null>(null)
   const dropdownRef = useRef<HTMLDivElement>(null)
 
+  // Step 2 — image
+  const [selectedImageUrl, setSelectedImageUrl] = useState<string | null>(null)
+  const [cutoutB64, setCutoutB64] = useState<string | null>(null)
+  const [loadingImage, setLoadingImage] = useState(false)
+  const fileRef = useRef<HTMLInputElement>(null)
+
+  // Step 3 — template + generation
+  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 [uploadedUrl, setUploadedUrl] = useState<string | null>(null)
+  const [error, setError] = useState<string | null>(null)
+  const templateFileRef = useRef<HTMLInputElement>(null)
+  const [uploadingTemplate, setUploadingTemplate] = useState(false)
+
   useEffect(() => {
     fetch('/api/products/list')
       .then(r => r.json())
       .then(data => setProducts(data.products ?? []))
+    fetch('/api/mockup/templates')
+      .then(r => r.json())
+      .then(data => setTemplates(data as MockupTemplate[]))
   }, [])
 
   const filtered = search.length < 2 ? [] : products.filter(p =>
@@ -38,17 +69,164 @@ export default function MockupPage() {
     p.ref.toLowerCase().includes(search.toLowerCase())
   ).slice(0, 20)
 
-  const handleFile = (e: React.ChangeEvent<HTMLInputElement>) => {
+  const isCarrelage = family.toLowerCase().includes('carrelage')
+
+  const filteredTemplates = templates.filter(t => {
+    if (t.family !== family && t.family !== 'Tous') return false
+    if (isCarrelage && placement && t.placement && t.placement !== placement) return false
+    return true
+  })
+
+  const selectProduct = (p: Product) => {
+    setSelectedProduct(p)
+    setSearch('')
+    setShowDropdown(false)
+    setSelectedImageUrl(null)
+    setCutoutB64(null)
+    setResultB64(null)
+    setUploadedUrl(null)
+    setStep('image')
+    fetch(`/api/products/sheet-info?ref=${encodeURIComponent(p.ref)}`)
+      .then(r => r.ok ? r.json() : null)
+      .then(data => {
+        if (!data?.product) return
+        const { famille, longueur, largeur } = data.product
+        if (famille) setFamily(famille)
+        if (longueur && largeur) setDimensions(`${longueur}x${largeur}cm`)
+        else if (longueur) setDimensions(`${longueur}cm`)
+      })
+  }
+
+  const selectImage = async (url: string) => {
+    setSelectedImageUrl(url)
+    setCutoutB64(null)
+    setLoadingImage(true)
+    setError(null)
+    try {
+      const res = await fetch(`/api/images/proxy?url=${encodeURIComponent(url)}`)
+      if (!res.ok) throw new Error('Impossible de charger l\'image')
+      const blob = await res.blob()
+      const b64 = await blobToBase64(blob)
+      setCutoutB64(b64)
+    } catch {
+      setError('Impossible de charger cette image')
+      setSelectedImageUrl(null)
+    } finally {
+      setLoadingImage(false)
+    }
+  }
+
+  const handleFileUpload = (e: React.ChangeEvent<HTMLInputElement>) => {
     const file = e.target.files?.[0]
     if (!file) return
+    setSelectedImageUrl(null)
     const reader = new FileReader()
     reader.onload = ev => {
-      const result = ev.target?.result as string
-      setCutoutB64(result.split(',')[1])
+      setCutoutB64((ev.target?.result as string).split(',')[1])
+      setStep('template')
     }
     reader.readAsDataURL(file)
   }
 
+  const uploadTemplate = async (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0]
+    if (!file) return
+    setUploadingTemplate(true)
+    const form = new FormData()
+    form.append('name', file.name.replace(/\.[^.]+$/, ''))
+    form.append('family', family || 'Tous')
+    form.append('description', '')
+    form.append('image', file)
+    const res = await fetch('/api/mockup/templates', { method: 'POST', body: form })
+    const tpl = await res.json() as MockupTemplate
+    setTemplates(prev => [...prev, tpl])
+    setSelectedTemplate(tpl.id)
+    setUploadingTemplate(false)
+  }
+
+  const generate = async () => {
+    if (!selectedTemplate || !cutoutB64) return
+    setGenerating(true)
+    setError(null)
+    setResultB64(null)
+    setUploadedUrl(null)
+    try {
+      const res = await fetch('/api/mockup/generate', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          templateId: selectedTemplate,
+          productImageBase64: cutoutB64,
+          productName: selectedProduct!.title,
+          family: family || 'Tous',
+          placement: placement || undefined,
+          dimensions: dimensions || undefined,
+          instruction: instruction || undefined,
+        }),
+      })
+      const data = await res.json()
+      if (!res.ok) throw new Error(data.error)
+      setResultB64(data.imageBase64)
+    } catch (e) {
+      setError(e instanceof Error ? e.message : 'Erreur')
+    } finally {
+      setGenerating(false)
+    }
+  }
+
+  const upload = async () => {
+    if (!resultB64 || !selectedProduct) return
+    setUploading(true)
+    try {
+      const res = await fetch('/api/images/upload', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          shopifyProductId: selectedProduct.shopifyId,
+          imageBase64: resultB64,
+          filename: `${selectedProduct.ref}-mockup.jpg`,
+        }),
+      })
+      const data = await res.json()
+      if (!res.ok) throw new Error(data.error)
+      setUploadedUrl(data.url)
+    } catch (e) {
+      setError(e instanceof Error ? e.message : 'Erreur upload')
+    } finally {
+      setUploading(false)
+    }
+  }
+
+  const StepIndicator = () => (
+    <div className="flex items-center gap-2 mb-6">
+      {(['product', 'image', 'template'] as Step[]).map((s, i) => {
+        const labels = ['Produit', 'Image', 'Template']
+        const active = step === s
+        const done = (step === 'image' && s === 'product') ||
+                     (step === 'template' && (s === 'product' || s === 'image'))
+        return (
+          <div key={s} className="flex items-center gap-2">
+            {i > 0 && <div className={`h-px w-6 ${done ? 'bg-indigo-500' : 'bg-slate-600'}`} />}
+            <button
+              type="button"
+              onClick={() => done || active ? setStep(s) : undefined}
+              className={`flex items-center gap-1.5 text-xs font-medium transition-colors ${
+                active ? 'text-white' : done ? 'text-indigo-400 hover:text-indigo-300' : 'text-slate-500'
+              }`}
+            >
+              <span className={`w-5 h-5 rounded-full flex items-center justify-center text-xs ${
+                active ? 'bg-indigo-600 text-white' : done ? 'bg-indigo-500/30 text-indigo-400' : 'bg-slate-700 text-slate-500'
+              }`}>
+                {done ? '✓' : i + 1}
+              </span>
+              {labels[i]}
+            </button>
+          </div>
+        )
+      })}
+    </div>
+  )
+
   return (
     <>
       <Header title="🖼️ Mockups" actions={
@@ -66,98 +244,202 @@ export default function MockupPage() {
         {tab === 'library' ? (
           <TemplateLibrary />
         ) : (
-          <div className="space-y-4">
-            <div className="bg-slate-800 rounded-xl p-4 border border-slate-700 space-y-3">
-              <h2 className="text-sm font-semibold text-white">Produit</h2>
+          <div>
+            <StepIndicator />
 
-              {/* Product picker */}
-              <div className="relative" ref={dropdownRef}>
-                <label className="block text-xs text-gray-400 mb-1">Rechercher un produit</label>
-                {selectedProduct ? (
-                  <div className="flex items-center gap-2 bg-slate-700 border border-slate-600 rounded px-2 py-1.5">
-                    <span className="flex-1 text-sm text-white truncate">{selectedProduct.title}</span>
-                    <span className="text-xs text-gray-400 shrink-0">{selectedProduct.ref}</span>
-                    <button type="button" onClick={() => { setSelectedProduct(null); setSearch('') }}
-                      className="text-gray-400 hover:text-white ml-1 shrink-0">✕</button>
+            {/* ── STEP 1 : Produit ── */}
+            {step === 'product' && (
+              <div className="bg-slate-800 rounded-xl p-5 border border-slate-700 space-y-4">
+                <h2 className="text-sm font-semibold text-white">Rechercher un produit</h2>
+                <div className="relative" ref={dropdownRef}>
+                  <input
+                    type="text"
+                    value={search}
+                    onChange={e => { setSearch(e.target.value); setShowDropdown(true) }}
+                    onFocus={() => setShowDropdown(true)}
+                    placeholder="Nom ou référence du produit…"
+                    autoFocus
+                    className="w-full bg-slate-700 border border-slate-600 rounded-lg px-3 py-2 text-sm text-white focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                  />
+                  {showDropdown && filtered.length > 0 && (
+                    <div className="absolute z-10 mt-1 w-full bg-slate-700 border border-slate-600 rounded-lg shadow-xl max-h-72 overflow-y-auto">
+                      {filtered.map(p => (
+                        <button key={p.shopifyId} type="button"
+                          onMouseDown={() => selectProduct(p)}
+                          className="w-full text-left px-3 py-2.5 text-sm text-white hover:bg-slate-600 flex justify-between gap-2 border-b border-slate-600/50 last:border-0">
+                          <span className="truncate">{p.title}</span>
+                          <span className="text-xs text-gray-400 shrink-0 self-center">{p.ref}</span>
+                        </button>
+                      ))}
+                    </div>
+                  )}
+                  {showDropdown && search.length >= 2 && filtered.length === 0 && (
+                    <div className="absolute z-10 mt-1 w-full bg-slate-700 border border-slate-600 rounded-lg px-3 py-2">
+                      <p className="text-xs text-gray-400">Aucun résultat</p>
+                    </div>
+                  )}
+                </div>
+              </div>
+            )}
+
+            {/* ── STEP 2 : Image ── */}
+            {step === 'image' && selectedProduct && (
+              <div className="bg-slate-800 rounded-xl p-5 border border-slate-700 space-y-4">
+                <div className="flex items-center justify-between">
+                  <div>
+                    <h2 className="text-sm font-semibold text-white">Choisir une image</h2>
+                    <p className="text-xs text-gray-400 mt-0.5">{selectedProduct.title} · <span className="font-mono text-indigo-300">{selectedProduct.ref}</span></p>
+                  </div>
+                  <button type="button" onClick={() => { setSelectedProduct(null); setStep('product') }}
+                    className="text-xs text-gray-400 hover:text-white">← Changer</button>
+                </div>
+
+                {selectedProduct.images.length > 0 ? (
+                  <div>
+                    <p className="text-xs text-gray-400 mb-2">Images Shopify</p>
+                    <div className="grid grid-cols-4 gap-2">
+                      {selectedProduct.images.map((url, i) => (
+                        <button key={i} type="button" onClick={() => { selectImage(url); setStep('template') }}
+                          className={`relative rounded-lg overflow-hidden border-2 transition-all ${selectedImageUrl === url ? 'border-indigo-500' : 'border-slate-600 hover:border-slate-400'}`}>
+                          <img src={url} alt={`Image ${i + 1}`} className="w-full h-20 object-cover" />
+                          {loadingImage && selectedImageUrl === url && (
+                            <div className="absolute inset-0 bg-black/50 flex items-center justify-center">
+                              <span className="text-xs text-white">…</span>
+                            </div>
+                          )}
+                        </button>
+                      ))}
+                    </div>
                   </div>
                 ) : (
-                  <>
-                    <input
-                      type="text"
-                      value={search}
-                      onChange={e => { setSearch(e.target.value); setShowDropdown(true) }}
-                      onFocus={() => setShowDropdown(true)}
-                      placeholder="Nom ou référence du produit…"
-                      className="w-full bg-slate-700 border border-slate-600 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:ring-1 focus:ring-indigo-500"
-                    />
-                    {showDropdown && filtered.length > 0 && (
-                      <div className="absolute z-10 mt-1 w-full bg-slate-700 border border-slate-600 rounded shadow-lg max-h-56 overflow-y-auto">
-                        {filtered.map(p => (
-                          <button key={p.shopifyId} type="button"
-                            onMouseDown={() => {
-                              setSelectedProduct(p)
-                              setSearch('')
-                              setShowDropdown(false)
-                              fetch(`/api/products/sheet-info?ref=${encodeURIComponent(p.ref)}`)
-                                .then(r => r.ok ? r.json() : null)
-                                .then(data => {
-                                  if (!data?.product) return
-                                  const { famille, longueur, largeur } = data.product
-                                  if (famille) setFamily(famille)
-                                  if (longueur && largeur) setDimensions(`${longueur}x${largeur}cm`)
-                                  else if (longueur) setDimensions(`${longueur}cm`)
-                                })
-                            }}
-                            className="w-full text-left px-3 py-2 text-sm text-white hover:bg-slate-600 flex justify-between gap-2">
-                            <span className="truncate">{p.title}</span>
-                            <span className="text-xs text-gray-400 shrink-0">{p.ref}</span>
+                  <p className="text-xs text-gray-500">Aucune image disponible sur Shopify pour ce produit.</p>
+                )}
+
+                <div className="border-t border-slate-700 pt-3">
+                  <p className="text-xs text-gray-400 mb-2">Ou uploader une image (PNG découpée)</p>
+                  <input ref={fileRef} type="file" accept="image/*" onChange={handleFileUpload} className="text-xs text-gray-300" />
+                </div>
+
+                {error && <p className="text-xs text-red-400">{error}</p>}
+              </div>
+            )}
+
+            {/* ── STEP 3 : Template + génération ── */}
+            {step === 'template' && selectedProduct && cutoutB64 && (
+              <div className="space-y-4">
+                {/* Recap produit + image */}
+                <div className="bg-slate-800 rounded-xl p-4 border border-slate-700 flex items-center gap-3">
+                  {selectedImageUrl && (
+                    <img src={selectedImageUrl} alt="" className="w-12 h-12 object-cover rounded-lg border border-slate-600 shrink-0" />
+                  )}
+                  <div className="flex-1 min-w-0">
+                    <p className="text-sm text-white truncate">{selectedProduct.title}</p>
+                    <p className="text-xs text-gray-400">{selectedProduct.ref}
+                      {dimensions && <span className="ml-2 text-green-400">· {dimensions}</span>}
+                    </p>
+                  </div>
+                  <button type="button" onClick={() => setStep('image')} className="text-xs text-gray-400 hover:text-white shrink-0">← Image</button>
+                </div>
+
+                {/* Famille + placement carrelage */}
+                <div className="bg-slate-800 rounded-xl p-4 border border-slate-700 space-y-3">
+                  <div className="grid grid-cols-2 gap-3">
+                    <div>
+                      <label className="block text-xs text-gray-400 mb-1">Famille</label>
+                      <select value={family} onChange={e => { setFamily(e.target.value); setPlacement('') }}
+                        className="w-full bg-slate-700 border border-slate-600 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:ring-1 focus:ring-indigo-500">
+                        {['Menuiserie', 'Baies vitrées', 'Carrelage', 'Tous'].map(f => <option key={f}>{f}</option>)}
+                      </select>
+                    </div>
+                    <div>
+                      <label className="block text-xs text-gray-400 mb-1">Dimensions</label>
+                      <input value={dimensions} onChange={e => setDimensions(e.target.value)}
+                        placeholder="ex: 60x60cm"
+                        className="w-full bg-slate-700 border border-slate-600 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:ring-1 focus:ring-indigo-500" />
+                    </div>
+                  </div>
+                  {isCarrelage && (
+                    <div>
+                      <p className="text-xs text-gray-400 mb-1.5">Placement</p>
+                      <div className="flex gap-2">
+                        {[{ val: 'sol', label: 'Sol' }, { val: 'mur', label: 'Mur (faïence)' }].map(({ val, label }) => (
+                          <button key={val} type="button" onClick={() => setPlacement(p => p === val ? '' : val)}
+                            className={`px-3 py-1.5 rounded text-xs font-medium transition-colors ${placement === val ? 'bg-indigo-600 text-white' : 'bg-slate-700 text-gray-300 hover:bg-slate-600'}`}>
+                            {label}
                           </button>
                         ))}
                       </div>
+                    </div>
+                  )}
+                </div>
+
+                {/* Templates */}
+                <div className="bg-slate-800 rounded-xl p-4 border border-slate-700 space-y-3">
+                  <div className="flex items-center justify-between">
+                    <h3 className="text-xs font-semibold text-gray-300 uppercase tracking-wide">Template</h3>
+                    <button type="button" onClick={() => templateFileRef.current?.click()}
+                      disabled={uploadingTemplate}
+                      className="text-xs text-indigo-400 hover:text-indigo-300 disabled:opacity-40">
+                      {uploadingTemplate ? 'Upload…' : '+ Nouveau template'}
+                    </button>
+                    <input ref={templateFileRef} type="file" accept="image/*" className="hidden" onChange={uploadTemplate} />
+                  </div>
+                  {filteredTemplates.length === 0 ? (
+                    <p className="text-xs text-gray-500">Aucun template pour cette famille. Uploadez-en un.</p>
+                  ) : (
+                    <div className="grid grid-cols-4 gap-2">
+                      {filteredTemplates.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-16 object-cover" />
+                          <div className="absolute bottom-0 left-0 right-0 bg-black/60 px-1 py-0.5">
+                            <p className="text-xs text-white truncate">{t.name}</p>
+                          </div>
+                        </button>
+                      ))}
+                    </div>
+                  )}
+                </div>
+
+                {/* Instruction + génération */}
+                <div className="space-y-2">
+                  <input type="text" value={instruction} onChange={e => setInstruction(e.target.value)}
+                    placeholder="Instruction personnalisée (optionnel)…"
+                    className="w-full bg-slate-800 border border-slate-700 rounded-lg px-3 py-2 text-sm text-white focus:outline-none focus:ring-1 focus:ring-indigo-500" />
+                  <button type="button" onClick={generate}
+                    disabled={!selectedTemplate || generating}
+                    className="w-full py-2.5 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>
+                </div>
+
+                {error && <p className="text-xs text-red-400">{error}</p>}
+
+                {/* Résultat */}
+                {resultB64 && (
+                  <div className="space-y-3">
+                    <img src={`data:image/jpeg;base64,${resultB64}`} alt="Mockup"
+                      className="w-full rounded-xl border border-slate-600" />
+                    <div className="flex gap-2">
+                      <input type="text" value={instruction} onChange={e => setInstruction(e.target.value)}
+                        placeholder="Modifier et regénérer…"
+                        className="flex-1 bg-slate-800 border border-slate-700 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-700 text-xs text-white hover:bg-slate-600 disabled:opacity-40">
+                        {generating ? '…' : '↺'}
+                      </button>
+                    </div>
+                    {uploadedUrl ? (
+                      <p className="text-xs text-green-400 text-center">✓ Uploadé sur Shopify</p>
+                    ) : (
+                      <button type="button" onClick={upload} disabled={uploading}
+                        className="w-full py-2 rounded-lg bg-emerald-600 text-white text-sm font-medium disabled:opacity-40 hover:bg-emerald-500 transition-colors">
+                        {uploading ? 'Upload…' : '↑ Uploader sur Shopify'}
+                      </button>
                     )}
-                    {showDropdown && search.length >= 2 && filtered.length === 0 && (
-                      <div className="absolute z-10 mt-1 w-full bg-slate-700 border border-slate-600 rounded px-3 py-2">
-                        <p className="text-xs text-gray-400">Aucun résultat</p>
-                      </div>
-                    )}
-                  </>
+                  </div>
                 )}
               </div>
-
-              <div className="grid grid-cols-2 gap-3">
-                <div>
-                  <label className="block text-xs text-gray-400 mb-1">Famille</label>
-                  <select value={family} onChange={e => setFamily(e.target.value)}
-                    className="w-full bg-slate-700 border border-slate-600 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:ring-1 focus:ring-indigo-500">
-                    {['Menuiserie', 'Baies vitrées', 'Carrelage', 'Tous'].map(f => <option key={f}>{f}</option>)}
-                  </select>
-                </div>
-                <div>
-                  <label className="block text-xs text-gray-400 mb-1">Dimensions (ex: 90x215cm)</label>
-                  <input value={dimensions} onChange={e => setDimensions(e.target.value)}
-                    placeholder="optionnel"
-                    className="w-full bg-slate-700 border border-slate-600 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:ring-1 focus:ring-indigo-500" />
-                </div>
-              </div>
-
-              <div>
-                <label className="block text-xs text-gray-400 mb-1">Image découpée (PNG)</label>
-                <input type="file" accept="image/png" onChange={handleFile} className="text-sm text-gray-300" />
-              </div>
-            </div>
-
-            {cutoutB64 && selectedProduct ? (
-              <MockupGenerator
-                productCutoutBase64={cutoutB64}
-                productName={selectedProduct.title}
-                shopifyId={selectedProduct.shopifyId}
-                family={family}
-                dimensions={dimensions || undefined}
-              />
-            ) : (
-              <p className="text-sm text-gray-500 text-center py-8">
-                {!selectedProduct ? 'Sélectionnez un produit pour commencer.' : 'Chargez une image PNG découpée.'}
-              </p>
             )}
           </div>
         )}