Fix auto read receipt to send when messages are viewed

- Add MarkMessageRead function to WhatsApp client
- Send read receipts when user opens conversation (not on receive)
- Only sends for unread messages when AutoReadReceipt is enabled

Author: shridarpatil

internal/handlers/contacts.go

@@ -360,6 +360,11 @@ func (a *App) GetMessages(r *fastglue.Request) error {
 		response[i] = msgResp
 	}
 
+	// Get unread incoming messages for auto read receipt
+	var unreadMessages []models.Message
+	a.DB.Where("contact_id = ? AND direction = ? AND status != ?", contactID, "incoming", "read").
+		Find(&unreadMessages)
+
 	// Mark incoming messages as read
 	a.DB.Model(&models.Message{}).
 		Where("contact_id = ? AND direction = ?", contactID, "incoming").
@@ -368,6 +373,29 @@ func (a *App) GetMessages(r *fastglue.Request) error {
 	// Update contact read status
 	a.DB.Model(&contact).Update("is_read", true)
 
+	// Send read receipts to WhatsApp if auto read receipt is enabled
+	if len(unreadMessages) > 0 && contact.WhatsAppAccount != "" {
+		var account models.WhatsAppAccount
+		if err := a.DB.Where("organization_id = ? AND name = ?", orgID, contact.WhatsAppAccount).First(&account).Error; err == nil {
+			if account.AutoReadReceipt {
+				go func() {
+					waAccount := &whatsapp.Account{
+						PhoneID:     account.PhoneID,
+						AccessToken: account.AccessToken,
+						APIVersion:  a.Config.WhatsApp.APIVersion,
+					}
+					for _, msg := range unreadMessages {
+						if msg.WhatsAppMessageID != "" {
+							if err := a.WhatsApp.MarkMessageRead(context.Background(), waAccount, msg.WhatsAppMessageID); err != nil {
+								a.Log.Error("Failed to send read receipt", "error", err, "message_id", msg.WhatsAppMessageID)
+							}
+						}
+					}
+				}()
+			}
+		}
+	}
+
 	return r.SendEnvelope(map[string]any{
 		"messages": response,
 		"total":    total,

pkg/whatsapp/client.go

@@ -355,3 +355,23 @@ func (c *Client) SendAudioMessage(ctx context.Context, account *Account, phoneNu
 	c.Log.Info("Audio message sent", "message_id", messageID, "phone", phoneNumber)
 	return messageID, nil
 }
+
+// MarkMessageRead sends a read receipt for a message
+func (c *Client) MarkMessageRead(ctx context.Context, account *Account, messageID string) error {
+	payload := map[string]interface{}{
+		"messaging_product": "whatsapp",
+		"status":            "read",
+		"message_id":        messageID,
+	}
+
+	url := c.buildMessagesURL(account)
+	c.Log.Debug("Sending read receipt", "message_id", messageID)
+
+	_, err := c.doRequest(ctx, "POST", url, payload, account.AccessToken)
+	if err != nil {
+		return fmt.Errorf("failed to send read receipt: %w", err)
+	}
+
+	c.Log.Debug("Read receipt sent", "message_id", messageID)
+	return nil
+}