The PayPal plugin was created by Scandia.  I've pinged Nik Walberg and hopefully he can give a response.

Thanks
Jason 

Hi Pierre, I will have one of the devs take a look.

Thanks!

Hi, looked at this and it appears the invoice key is encrypted. Please use one of the following methods to solve the issue in your install:

1. Decrypt using EncryptionHelper.Decrypt(string value) or value.DecryptWithMachineKey()
2. Or, always display the latest invoice details (like Bazaar currently does)

HI, I try the EncryptionHelper like this one: http://johnnycoder.com/blog/2008/07/03/c-encryption-decryption-helper-class/

But I got an exception {"Bad Data.\r\n"}

I take a look in the bazaar app and in the receiptController, the only get the invoice key lke that: CustomerContext.GetValue("invoiceKey"); But in my case the CustomerContext is null at this point.

How I can't decrypt or control the way papal return value? Thanks

I dig an little more, When the paiement is completed, the URL used by Paypal for callback is:

http://localhost:65079/umbraco/MerchelloPayPal/PayPalApi/SuccessPayment?InvoiceKey=b4050932-93bb-495d-826f-0503d3e92300&PaymentKey=8cfd4174-9cab-400a-9e2f-8624d59fd2f7&token=EC-0LC28218XE2191156&PayerID=ZHMY3BS9M3QRG"

We can see that the InvoiceKey is good. But just after that the plugin call my page with this

http://localhost:65079/receipt?inv=A8237017A537A28553A93455018417C58E010146B66EE4E0D63547D0F55A55EF6DFFC958724E56C69B3D245171780559AE9360B33D1483C663B801B33E5D1B1BCB1E5CEB7E7FCD9775206212EA682FA7BAA86797319053E6468DB7A814BE690A0121F53138487E6819EA2D91264FAFFE6745934234BFFDC877F219622B692C31AC6EA8352AC27E167399817301C6ECBD8FE45BEB1A06F15D004C28C59708F266

That wrong. I try to found why. I download the source code from here:

https://github.com/Merchello/Merchello/tree/1.6.1

Where I can found the source of that controller? I open the solution in the Merchello-1.6.1\Plugin\Payments\PayPal\src\Merchello.Plugin.Payments.PayPal folder but I can't found anything on the function "successPayement" thanks

EDIT: I am totally lost! The source code provided do not seam to correspond to the Paypalexpresss plugin 1.4.1 ?! In the source code we got a PayPalEpressCheckout.html in the Merchello.Paypal folder. Nothing like that in the 1.4.1 build.

Nobody use this paypal module? I just need to solve this to deploy to my client. Do Merchello have another working paypal provider that I can use instead?

I'm interested too. I like to start to use Merchello and to devel and deploy it.

Thank for your help! The second line work like a charm (Umbraco.Core.StringExtensions.DecryptWithMachineKey())...

The only thing I need to making work is the capture funds problems: https://our.umbraco.org/projects/collaboration/merchello/merchello/64487-Paypal-Express-capture-funds-problem

Can you take a look ?

I can get the invoice ok, Is it possible to get the Paypal Transaction Id in the return url?

I need this to store so I can reconcile transactions in a seperate database

You have to customize the Paypal code where build the return URL

https://github.com/Merchello/Merchello/blob/merchello-dev/Plugin/Payments/PayPal/src/Merchello.Plugin.Payments.PayPal/Controllers/PayPalApiController.cs

        // redirect to Site
        var returnUrl = payment.ExtendedData.GetValue(Constants.ExtendedDataKeys.ReturnUrl);
        var response = Request.CreateResponse(HttpStatusCode.Moved);
        response.Headers.Location = new Uri(returnUrl.Replace("%INVOICE%", invoice.Key.ToString().EncryptWithMachineKey()));

So the PayPalApiController.cs retrieves the PayPal TransactionId?

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