pre version 2

app/Models/SenderAccount.php

@@ -4,8 +4,10 @@ declare(strict_types=1);
 
 namespace App\Models;
 
+use App\Services\GoogleOAuthService;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Support\Facades\Crypt;
 
 class SenderAccount extends Model
@@ -24,11 +26,14 @@ class SenderAccount extends Model
         'verify_email',
         'note',
         'is_active',
+        'auth_method',
+        'google_oauth_connection_id',
     ];
 
     protected $casts = [
         'is_active' => 'boolean',
         'smtp_port' => 'integer',
+        'google_oauth_connection_id' => 'integer',
     ];
 
     public function scopeActive(Builder $query): Builder
@@ -36,8 +41,33 @@ class SenderAccount extends Model
         return $query->where('is_active', true);
     }
 
+    public function googleOAuthConnection(): BelongsTo
+    {
+        return $this->belongsTo(GoogleOAuthConnection::class);
+    }
+
+    protected function resolveOAuthToken(): string
+    {
+        if (!$this->relationLoaded('googleOAuthConnection')) {
+            $this->load('googleOAuthConnection');
+        }
+        $connection = $this->googleOAuthConnection;
+        if (!$connection) {
+            return '';
+        }
+        try {
+            return app(GoogleOAuthService::class)->getAccessToken($connection);
+        } catch (\Exception $e) {
+            return '';
+        }
+    }
+
     public function getDecryptedPassword(): string
     {
+        if ($this->auth_method === 'oauth') {
+            return $this->resolveOAuthToken();
+        }
+
         if (empty($this->smtp_password)) {
             return '';
         }
@@ -121,11 +151,33 @@ class SenderAccount extends Model
             $email->attachFromPath($path);
         }
 
-        $transport = \Symfony\Component\Mailer\Transport::fromDsn($this->buildDsn());
-        $mailer = new \Symfony\Component\Mailer\Mailer($transport);
+        if ($this->auth_method === 'oauth') {
+            $mailer = $this->buildOAuthMailer();
+        } else {
+            $transport = \Symfony\Component\Mailer\Transport::fromDsn($this->buildDsn());
+            $mailer = new \Symfony\Component\Mailer\Mailer($transport);
+        }
+
         $mailer->send($email);
     }
 
+    protected function buildOAuthMailer(): \Symfony\Component\Mailer\Mailer
+    {
+        $token = $this->resolveOAuthToken();
+        $username = $this->smtp_username ?? $this->email_address;
+        $host = $this->smtp_host ?? 'smtp.gmail.com';
+        $port = $this->smtp_port ?? 587;
+
+        $transport = new \Symfony\Component\Mailer\Transport\Smtp\EsmtpTransport($host, $port, true);
+        $transport->setUsername($username);
+        $transport->setPassword($token);
+        $transport->setAuthenticators([
+            new \Symfony\Component\Mailer\Transport\Smtp\Auth\XOAuth2Authenticator(),
+        ]);
+
+        return new \Symfony\Component\Mailer\Mailer($transport);
+    }
+
     public function sendReport(string $subject, string $body): bool
     {
         if (empty($this->verify_email)) {