チェックイン単独のページを追加

app/Http/Controllers/EjaculationController.php

@@ -42,9 +42,26 @@ class EjaculationController extends Controller
         return redirect()->route('home')->with('status', 'チェックインしました！');
     }
 
-    public function show()
+    public function show($id)
     {
-        // TODO: not implemented
+        $ejaculation = Ejaculation::findOrFail($id);
+        $user = User::findOrFail($ejaculation->user_id);
+
+        // 1つ前のチェックインからの経過時間を求める
+        $previousEjaculation = Ejaculation::select('ejaculated_date')
+            ->where('user_id', $ejaculation->user_id)
+            ->where('ejaculated_date', '<', $ejaculation->ejaculated_date)
+            ->orderByDesc('ejaculated_date')
+            ->first();
+        if (!empty($previousEjaculation)) {
+            $ejaculatedSpan = $ejaculation->ejaculated_date
+                ->diff($previousEjaculation->ejaculated_date)
+                ->format('%a日 %h時間 %i分');
+        } else {
+            $ejaculatedSpan = null;
+        }
+
+        return view('ejaculation.show')->with(compact('user', 'ejaculation', 'ejaculatedSpan'));
     }
 
     public function edit()