feat(router): Enable client_secret auth for payments_get_intent [v2]

[AnuthaDev]

Type of Change

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

Description

Added support for client_secret authentication in Payments - Get Intent

Additional Changes

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

Motivation and Context

Closes #8118

How did you test it?

• Request:

curl --location 'http://localhost:8080/v2/payments/12345_pay_0196fc47794a7a81b64346c96b71be4d/get-intent' \
--header 'x-profile-id: pro_pbRrpRVsI1yMUsyNhmrC' \
--header 'Authorization: publishable-key=pk_dev_41285e1d1b2a4998b1d9192874583289,client-secret=cs_0196fc4779ac7fe2826efc5ea6a2be24' \
--data ''

• Response:

{
    "id": "12345_pay_0196fc47794a7a81b64346c96b71be4d",
    "status": "requires_payment_method",
    "amount_details": {
        "order_amount": 100,
        "currency": "USD",
        "shipping_cost": null,
        "order_tax_amount": null,
        "external_tax_calculation": "skip",
        "surcharge_calculation": "skip",
        "surcharge_amount": null,
        "tax_on_surcharge": null
    },
    "client_secret": null,
    "profile_id": "pro_pbRrpRVsI1yMUsyNhmrC",
    "merchant_reference_id": null,
    "routing_algorithm_id": null,
    "capture_method": "manual",
    "authentication_type": "no_three_ds",
    "billing": {
        "address": {
            "city": null,
            "country": null,
            "line1": null,
            "line2": null,
            "line3": null,
            "zip": null,
            "state": null,
            "first_name": "John",
            "last_name": "Dough"
        },
        "phone": null,
        "email": "[email protected]"
    },
    "shipping": {
        "address": {
            "city": "Karwar",
            "country": null,
            "line1": null,
            "line2": null,
            "line3": null,
            "zip": "581301",
            "state": "Karnataka",
            "first_name": "John",
            "last_name": "Dough"
        },
        "phone": null,
        "email": "[email protected]"
    },
    "customer_id": "12345_cus_0196fb8c515f79c3bda13a5e8bd62de0",
    "customer_present": "present",
    "description": null,
    "return_url": null,
    "setup_future_usage": "on_session",
    "apply_mit_exemption": "Skip",
    "statement_descriptor": null,
    "order_details": null,
    "allowed_payment_method_types": null,
    "metadata": null,
    "connector_metadata": null,
    "feature_metadata": null,
    "payment_link_enabled": "Skip",
    "payment_link_config": null,
    "request_incremental_authorization": "default",
    "expires_on": "2025-05-23T08:49:24.798Z",
    "frm_metadata": null,
    "request_external_three_ds_authentication": "Skip"
}

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
crates/router/src/routes/payments.rs	64% smaller