feat: enhance email handling with improved error reporting and statistics

- Updated the `reenviarEmail` mutation to return detailed error messages for better user feedback.
- Added a new query to obtain email queue statistics, providing insights into email statuses.
- Enhanced the `processarFilaEmails` mutation to track processing failures and successes more effectively.
- Implemented a manual email processing mutation for immediate testing and control over email sending.
- Improved email validation and error handling in the email sending action, ensuring robust delivery processes.

packages/backend/convex/actions/email.ts

@@ -50,28 +50,48 @@ export const enviar = action({
         host: config.servidor,
         port: config.porta,
         secure: config.usarSSL,
+        requireTLS: config.usarTLS,
         auth: {
           user: config.usuario,
           pass: config.senha, // Senha já descriptografada
         },
         tls: {
-          // Permitir certificados autoassinados
+          // Permitir certificados autoassinados apenas se necessário
           rejectUnauthorized: false,
+          ciphers: "SSLv3",
         },
+        connectionTimeout: 10000, // 10 segundos
+        greetingTimeout: 10000,
+        socketTimeout: 10000,
       });
 
+      // Validar email destinatário antes de enviar
+      const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+      if (!emailRegex.test(email.destinatario)) {
+        throw new Error(`Email destinatário inválido: ${email.destinatario}`);
+      }
+
       // Enviar email
       const info = await transporter.sendMail({
         from: `"${config.nomeRemetente}" <${config.emailRemetente}>`,
         to: email.destinatario,
         subject: email.assunto,
         html: email.corpo,
+        text: email.corpo.replace(/<[^>]*>/g, ""), // Versão texto para clientes que não suportam HTML
       });
 
+      interface MessageInfo {
+        messageId?: string;
+        response?: string;
+      }
+
+      const messageInfo = info as MessageInfo;
+
       console.log("✅ Email enviado com sucesso!", {
         para: email.destinatario,
         assunto: email.assunto,
-        messageId: (info as { messageId?: string }).messageId,
+        messageId: messageInfo.messageId,
+        response: messageInfo.response,
       });
 
       // Marcar como enviado