feat(router): add is_guest_customer in payment method list response

[sai-harsha-vardhan]

Type of Change

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

Description

Add is_guest_customer to the payment method list response.

This is required so the SDK can take appropriate actions, such as showing or hiding the checkbox based on the is_guest_customer flag.

Additional Changes

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

Motivation and Context

How did you test it?

Tested Manually

1. Create a payment by sending customer_id in the request
   CURL

curl --location 'localhost:8080/payments' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'api-key: dev_Fk54NrPnU5sGnTO4UtCtdPSrAWYAeCR7I3nLRo2PPqSuQZkVKqhEhV0P2rMUwx15' \
--data '{
    "amount": 100,
    "currency": "USD",
    "confirm": false,
    "customer_id": "cus_123"
}'

2. Perform PML for that payment_intent to observe is_guest_customer sent as false
   CURL

curl --location 'localhost:8080/account/payment_methods?client_secret=pay_vfX30nQkBTC2UjyyVW8H_secret_a2oaRjdcHnqVgB4MAz6T' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'api-key: pk_dev_4014d6aecda84e198bb723506bf837da'

Response

{
    "redirect_url": "https://example.com/success",
    "currency": "USD",
    "payment_methods": [],
    "mandate_payment": null,
    "merchant_name": "NewAge Retailer",
    "show_surcharge_breakup_screen": false,
    "payment_type": "normal",
    "request_external_three_ds_authentication": false,
    "collect_shipping_details_from_wallets": false,
    "collect_billing_details_from_wallets": false,
    "is_tax_calculation_enabled": false,
    "sdk_next_action": {
        "next_action": "confirm"
    },
    "is_guest_customer": false
}

3. Create a payment by not sending customer_id in the request
   CURL

curl --location 'localhost:8080/payments' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'api-key: dev_Fk54NrPnU5sGnTO4UtCtdPSrAWYAeCR7I3nLRo2PPqSuQZkVKqhEhV0P2rMUwx15' \
--data '{
    "amount": 100,
    "currency": "USD",
    "confirm": false
}'

5. Perform PML for that payment_intent to observe is_guest_customer sent as true
   CURL

curl --location --request GET 'localhost:8080/account/payment_methods?client_secret=pay_NKRFhGg1TeRtRdKddBPg_secret_3kos32lK71neCujThJvA' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'api-key: pk_dev_4014d6aecda84e198bb723506bf837da' \
--data '{
    "client_secret": "pay_NKRFhGg1TeRtRdKddBPg_secret_3kos32lK71neCujThJvA"
}'

Response

{
    "redirect_url": "https://example.com/success",
    "currency": "USD",
    "payment_methods": [],
    "mandate_payment": null,
    "merchant_name": "NewAge Retailer",
    "show_surcharge_breakup_screen": false,
    "payment_type": "normal",
    "request_external_three_ds_authentication": false,
    "collect_shipping_details_from_wallets": false,
    "collect_billing_details_from_wallets": false,
    "is_tax_calculation_enabled": false,
    "sdk_next_action": {
        "next_action": "confirm"
    },
    "is_guest_customer": true
}

Checklist

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

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
api-reference/v1/openapi_spec_v1.json	29% smaller
crates/api_models/src/payment_methods.rs	0% smaller
crates/router/src/core/payment_methods/cards.rs	0% smaller

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@           Coverage Diff           @@
##             main   #10598   +/-   ##
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  Coverage        ?    6.44%           
=======================================
  Files           ?     1254           
  Lines           ?   313328           
  Branches        ?        0           
=======================================
  Hits            ?    20208           
  Misses          ?   293120           
  Partials        ?        0           

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