Klarna checkout

[Sweta-Kumari-Sharma]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates
• Documentation
• CI/CD

Description

Klarna Kustom Checkout (KCO) integration (upto authorization)
Klarna provides two payment methods:

1. Klarna Payments
2. Klarna Kustom Checkout

Any one of the methods can be used at a time and switching between Klarna Payments and Klarna Checkout is been done

Additional Changes

• This PR modifies the API contract
• This PR modifies the database schema
• This PR modifies application configuration/environment variables

Motivation and Context

This change is required because Klarna KCO provides some additional features (such as shipping address change callback), along with location differences than Klarna Payments.

Link to the issue: #6521

How did you test it?

I tested it using postman by hitting the required endpoints. Curl to the postman setup:
curl --location 'http://localhost:8080/payments'
--header 'Content-Type: application/json'
--header 'Accept: application/json'
--header 'api-key: dev_tMhVA6fMp8BFTmxi1BgtoeKC0SGTpwn4E7Lg3YOlo8E8Jr2niX2LWzyijupRGfOQ'
--data-raw '{
"amount": 5000,
"order_tax_amount": 0,
"currency": "USD",
"amount_to_capture": 5000,
"confirm": false,
"payment_experience":"invoke_sdk_client",
"profile_id": null,
"capture_method": "automatic",
"capture_on": "2022-09-10T10:11:12Z",
"authentication_type": "no_three_ds",
"setup_future_usage":"on_session",
"customer": {
"id": "customer123",
"name": "John Doe",
"email": "[email protected]",
"phone": "9999999999",
"phone_country_code": "+1"
},
"customer_id": "customer123",
"phone_country_code": "+1",
"routing": {
"type": "single",
"data": "stripe"
},
"description": "Its my first payment request",
"return_url": "https://google.com",
"payment_method": "pay_later",
"payment_method_type": "klarna_checkout",
"payment_method_data": {
"pay_later": {
"klarna_checkout":{}
},
"billing":null
},
"billing": {
"address": {
"line1": "1467",
"line2": "Harrison Street",
"line3": "Harrison Street",
"city": "San Fransico",
"state": "California",
"zip": "94122",
"country": "US",
"first_name": "joseph",
"last_name": "Doe"
},
"phone": {
"number": "8056594427",
"country_code": "+91"
},
"email": "[email protected]"
},
"shipping": {
"address": {
"line1": "1467",
"line2": "Harrison Street",
"line3": "Harrison Street",
"city": "San Fransico",
"state": "California",
"zip": "94122",
"country": "US",
"first_name": "joseph",
"last_name": "Doe"
},
"phone": {
"number": "8056594427",
"country_code": "+91"
},
"email": "[email protected]"
},
"statement_descriptor_name": "joseph",
"statement_descriptor_suffix": "JS",
"order_details": [
{
"product_name": "Red T-Shirt",
"quantity": 1,
"amount": 5000,
"account_name": "transaction_processing",
"total_tax_amount": 0,
"tax_rate": 0,
"total_amount": 5000
}
],
"metadata": {
"udf1": "value1",
"new_customer": "true",
"login_date": "2019-09-10T10:11:12Z"
},
"browser_info": {
"user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
"accept_header": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,/;q=0.8",
"language": "nl-NL",
"color_depth": 24,
"screen_height": 723,
"screen_width": 1536,
"time_zone": 0,
"java_enabled": true,
"java_script_enabled": true,
"ip_address": "128.0.0.1"
},
"customer_acceptance": {
"acceptance_type": "offline",
"accepted_at": "1963-05-03T04:07:52.723Z",
"online": {
"ip_address": "125.0.0.1",
"user_agent": "amet irure esse"
}
},
"connector_metadata": {
"noon": {
"order_category": "pay"
}
},
"payment_link": false,
"payment_link_config": {
"theme": "",
"logo": "",
"seller_name": "",
"sdk_layout": "",
"display_sdk_only": false,
"enabled_saved_payment_method": false
},
"payment_type": "normal",
"request_incremental_authorization": false,
"merchant_order_reference_id": "test_ord",

}
'

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• [x ] I reviewed the submitted code
• I added unit tests for my changes where possible

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
crates/router/src/connector/multisafepay/transformers.rs	40% smaller
crates/router/src/connector/adyen.rs	36% smaller
crates/router/src/connector/nuvei/transformers.rs	32% smaller
crates/hyperswitch_connectors/src/connectors/square/transformers.rs	32% smaller
crates/router/src/connector/klarna/transformers.rs	31% smaller
crates/router/src/connector/paypal/transformers.rs	27% smaller
crates/router/src/core/payments/transformers.rs	25% smaller
crates/router/src/types/transformers.rs	25% smaller
crates/router/src/connector/zen/transformers.rs	21% smaller
crates/euclid/src/frontend/dir.rs	21% smaller
crates/api_models/src/payments.rs	19% smaller
crates/router/src/core/payments/helpers.rs	16% smaller
crates/router/src/connector/stripe/transformers.rs	14% smaller
crates/router/src/connector/klarna.rs	4% smaller
crates/common_enums/src/enums.rs	0% smaller
crates/common_enums/src/transformers.rs	0% smaller
crates/euclid/src/frontend/dir/enums.rs	0% smaller
crates/euclid/src/frontend/dir/lowering.rs	0% smaller
crates/euclid/src/frontend/dir/transformers.rs	0% smaller
crates/hyperswitch_connectors/src/utils.rs	0% smaller
crates/hyperswitch_domain_models/src/payment_method_data.rs	0% smaller
crates/hyperswitch_domain_models/src/router_data.rs	0% smaller
crates/hyperswitch_domain_models/src/router_request_types.rs	0% smaller
crates/kgraph_utils/src/mca.rs	0% smaller
crates/kgraph_utils/src/transformers.rs	0% smaller
crates/router/src/connector/adyen/transformers.rs	0% smaller
crates/router/src/connector/utils.rs	0% smaller

[cookieg13]

@Sweta-Kumari-Sharma Add a linked issue with this PR, also rename the PR title. You can take this PR as ref: #6560

[cookieg13]

In your description, also add the response json for your cURL