update mailsend,frontend

app/Http/Controllers/Admin/MailController.php

@@ -12,14 +12,16 @@ class MailController extends Controller
 {
     public function send(MailSend $request)
     {
-        if ($request->input('type') == 2 && empty($request->input('receiver'))) {
-            abort(500, '收件人不能为空');
-        }
 
-        if ($request->input('receiver')) {
-            $users = User::whereIn('id', $request->input('receiver'))->get();
-        } else {
-            $users = User::all();
+        switch ($request->input('type')) {
+            case 1: $users = $this->getAllUser();
+            break;
+            case 2: $users = $this->getReceiver($request->input('receiver'));
+            break;
+            case 3: $users = $this->getSubscribeUser();
+            break;
+            case 4: $users = $this->getExpireUser();
+            break;
         }
 
         foreach ($users as $user) {
@@ -39,4 +41,27 @@ class MailController extends Controller
             'data' => true
         ]);
     }
+
+    private function getAllUser()
+    {
+        return User::all();
+    }
+
+    private function getReceiver($receiver)
+    {
+        if (empty($receiver)) {
+            abort(500, '收件人不能为空');
+        }
+        return User::whereIn('id', $receiver)->get();
+    }
+
+    private function getSubscribeUser()
+    {
+        return User::where('expired_at', '=>', time())->get();
+    }
+
+    private function getExpireUser()
+    {
+        return User::where('expired_at', '<', time())->get();
+    }
 }

app/Http/Requests/Admin/MailSend.php

@@ -14,7 +14,7 @@ class MailSend extends FormRequest
     public function rules()
     {
         return [
-            'type' => 'required|in:1,2',
+            'type' => 'required|in:1,2,3,4',
             'subject' => 'required',
             'content' => 'required',
             'receiver' => 'array'