feat:명함 이미지 저장 및 표시 기능 추가

- SalesProspect 모델에 business_card_image 필드 추가
- hasBusinessCard(), business_card_url 접근자 추가
- SalesProspectController store/update에 이미지 저장 로직
- create.blade.php에 이미지 데이터 전송 hidden input 추가

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/Http/Controllers/Sales/SalesProspectController.php

@@ -8,6 +8,7 @@
 use App\Models\Sales\SalesProspectProduct;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
+use Illuminate\Support\Facades\Storage;
 use Illuminate\View\View;
 
 /**
@@ -92,8 +93,15 @@ public function store(Request $request)
             'email' => 'nullable|email|max:100',
             'address' => 'nullable|string|max:500',
             'status' => 'required|in:lead,prospect,negotiation,contracted,lost',
+            'business_card_image_data' => 'nullable|string',
         ]);
 
+        // 명함 이미지 저장 (Base64)
+        if (!empty($validated['business_card_image_data'])) {
+            $validated['business_card_image'] = $this->saveBusinessCardImage($validated['business_card_image_data']);
+            unset($validated['business_card_image_data']);
+        }
+
         $prospect = SalesProspect::create($validated);
 
         return redirect()->route('sales.prospects.show', $prospect->id)
@@ -148,8 +156,21 @@ public function update(Request $request, int $id)
             'email' => 'nullable|email|max:100',
             'address' => 'nullable|string|max:500',
             'status' => 'required|in:lead,prospect,negotiation,contracted,lost',
+            'business_card' => 'nullable|image|max:5120',
         ]);
 
+        // 명함 이미지 업로드 처리
+        if ($request->hasFile('business_card')) {
+            // 기존 이미지 삭제
+            if ($prospect->business_card_image) {
+                Storage::disk('public')->delete($prospect->business_card_image);
+            }
+
+            $validated['business_card_image'] = $request->file('business_card')
+                ->store('business-cards', 'public');
+        }
+        unset($validated['business_card']);
+
         $prospect->update($validated);
 
         return redirect()->route('sales.prospects.show', $prospect->id)
@@ -162,9 +183,39 @@ public function update(Request $request, int $id)
     public function destroy(int $id)
     {
         $prospect = SalesProspect::findOrFail($id);
+
+        // 명함 이미지 삭제
+        if ($prospect->business_card_image) {
+            Storage::disk('public')->delete($prospect->business_card_image);
+        }
+
         $prospect->delete();
 
         return redirect()->route('sales.prospects.index')
             ->with('success', '가망고객이 삭제되었습니다.');
     }
+
+    /**
+     * Base64 명함 이미지 저장
+     */
+    private function saveBusinessCardImage(string $base64Data): ?string
+    {
+        // data:image/jpeg;base64,... 형식에서 데이터 추출
+        if (preg_match('/^data:image\/(\w+);base64,/', $base64Data, $matches)) {
+            $extension = $matches[1];
+            $base64Data = preg_replace('/^data:image\/\w+;base64,/', '', $base64Data);
+        } else {
+            $extension = 'jpg';
+        }
+
+        $imageData = base64_decode($base64Data);
+        if ($imageData === false) {
+            return null;
+        }
+
+        $filename = 'business-cards/' . date('Ymd') . '_' . uniqid() . '.' . $extension;
+        Storage::disk('public')->put($filename, $imageData);
+
+        return $filename;
+    }
 }