Swish Demo App for in-app Swish payment flow

Demo application for Swish payment flow with Google flutter framework

Overall flow chart

sequenceDiagram
    App->>Swish Server: payment request (A)
    Swish Server-->>App: payment token id (A')
    Swish Server->>Callback Server: callback (A'')
    App->>Swish Server: deep link (B)
    Swish Server->>Callback Server: payment callback (B')

Details

Step (A) create payment request

URL : /swish-cpcapi/api/v1/paymentrequests

Method : POST

Auth required : YES (client certificate)

Payload (example) :

{
    "payeePaymentReference": "0123456789", # Receiver of payment
    "callbackUrl": "https://example.com/api/paymentrequests", # must be https 
    "payeeAlias": "460100031456", # Receiver phone number country_code + number
    "amount": "100",
    "currency": "SEK", # only SEK for now  
    "message": "Kingston USB Flash Drive 8 GB" # Max 50 chars [a-öA-Ö0-9;:,.?!()]
}

Step (A') success response

Code : 200 OK

HEAD:

PaymentRequestToken: f34DS34lfd0d03fdDselkfd3ffk21

Step (A'') callback from Swish for payment request

TODO :

Step (B) invoke Swish app with deep link

// [deep link] 
swish://paymentrequest?token=$_paymentRequestToken&callbackurl=$callbackUrl

Authors

Chengwei Ding

aeolus/swish-demo