specification.en.md

Laravel Test task

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Task: connect 2 payment gateways (accept payments).

1. The database must contain tables of users and payments
2. Both gateways send data to callback url when the payment state changes.
3. Both gateways work with only one currency and transfer amounts in cents.
4. Creation of payment on the side of the gateway is not required (only the processing of state changes needs to be done).
5. For each payment gateway, it is necessary to implement the ability to set a limit, after which the payment processing stops until the next day.

Gateway #1

Merchant data:

merchant_id=6
merchant_key=KaTf5tZYHx4v7pgZ

Fields sent to callback_url in application/json format:

Field	Type	Description
merchant_id	Integer	ID of merchant
payment_id	Integer	Merchant's payment ID
status	String	Payment status. Could be new, pending, completed, expired or rejected
amount	Integer	Payment amount
amount_paid	Integer	Actually paid amount (in merchant's currency)
timestamp	Integer	Current timestamp
sign	String	Signature

Signature generation rules:

1. Sort parameters alphabetically.
2. Concatenate them (excluding sign) using the delimiter :.
3. Add merchant_key to the end of the resulting line.
4. Get SHA256 hash from it.

Request example:

{
    "merchant_id": 6,
    "payment_id": 13,
    "status": "completed",
    "amount": 500,
    "amount_paid": 500,
    "timestamp": 1654103837,
    "sign": "f027612e0e6cb321ca161de060237eeb97e46000da39d3add08d09074f931728"
}

Gateway #2

Merchant data:

app_id=816
app_key=rTaasVHeteGbhwBx

Fields sent to callback_url in multipart/form-data format:

Field	Type	Description
project	Integer	ID of merchant
invoice	Integer	Merchant's payment ID
status	String	Payment status. Could be created, inprogress, paid, expired or rejected
amount	Integer	Payment amount
amount_paid	Integer	Actually paid amount (in merchant's currency)
rand	String	Random string

The request sends the Authorization header containing the signature.

Signature generation rules:

1. Sort parameters alphabetically.
2. Merge fields using . delimiter.
3. Add app_key to the end of the resulting line.
4. Get MD5 hash from it.

Request example:

Header

Authorization: d84eb9036bfc2fa7f46727f101c73c73

Body

{
    "project": 816,
    "invoice": 73,
    "status": "completed",
    "amount": 700,
    "amount_paid": 700,
    "rand": "SNuHufEJ"
}