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| # vpos-go | ||
| vPOS Golang package | ||
| # vPOS Go | ||
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| This package facilitates the integration of your Golang project/application with the vPOS API Payment Gateway. | ||
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| ## Installation | ||
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| ```sh | ||
| go get github.com/nellcorp/vpos-go | ||
| ``` | ||
|
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| ## Configuration | ||
| This package requires you set up the following environment variables on your machine before | ||
| interacting with the API using this package: | ||
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| | Variable | Description | Required | | ||
| | --- | --- | --- | | ||
| | `GPO_POS_ID` | The Point of Sale ID provided by EMIS | true | | ||
| | `GPO_SUPERVISOR_CARD` | The Supervisor card ID provided by EMIS | true | | ||
| | `MERCHANT_VPOS_TOKEN` | The API token provided by vPOS | true | | ||
| | `PAYMENT_CALLBACK_URL` | The URL that will handle payment notifications | false | | ||
| | `REFUND_CALLBACK_URL` | The URL that will handle refund notifications | false | | ||
| | `ENVIRONMENT` | Your application environment, set "production" for production or "development" for sandbox/tests environment | true | | ||
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| Given you have set up all the environment variables above with the correct information, you will now | ||
| be able to authenticate and communicate effectively with vPOS API Payment Gateway using this package. | ||
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| The next section will show the various payment actions that can be performed by you, the merchant. | ||
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| ### How to instantiate vPOS | ||
| To create an instance of a vPOS merchant see argument table and a simple example below: | ||
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| | Argument | Description | Type | | ||
| | --- | --- | --- | | ||
| | `token` | Token generated at [vPOS](https://merchant.vpos.ao) dashboard | `string` | ||
| | `posID` | Merchant POS ID provided by EMIS | `int64` | ||
| | `supervisorCard` | Merchant Supervisor Card number provided by EMIS | `string` | ||
| | `paymentCallbackURL` | Merchant application endpoint to accept the callback payment response | `string` | ||
| | `refundCallbackURL` | Merchant application endpoint to accept the callback refund response | `string` | ||
| | `environment` | Your application environment, is either "production" or "development" | `string` | ||
|
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| #### Example | ||
| ```go | ||
| package main | ||
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| import ( | ||
| "os" | ||
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| "github.com/nellcorp/vpos-go" | ||
| ) | ||
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| var ( | ||
| posID = os.Getenv("GPO_POS_ID") | ||
| token = os.Getenv("MERCHANT_VPOS_TOKEN") | ||
| paymentCallbackURL = os.Getenv("PAYMENT_CALLBACK_URL") | ||
| refundCallbackURL = os.Getenv("REFUND_CALLBACK_URL") | ||
| supervisorCard = os.Getenv("GPO_SUPERVISOR_CARD") | ||
| environment = os.Getenv("ENVIRONMENT") | ||
| ) | ||
|
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| func main() { | ||
| vpos := vposgo.NewVPOS( | ||
| posID, | ||
| token, | ||
| paymentCallbackURL, | ||
| refundCallbackURL, | ||
| supervisorCard, | ||
| environment | ||
| ) | ||
| } | ||
| ``` | ||
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| ### Payment Transaction | ||
| Creates a new payment transaction (or authorization request) given a `transactionType`, a valid `mobile number` associated with a `MULTICAIXA EXPRESS` account and a valid `amount`. | ||
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| ```go | ||
| package main | ||
|
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| import ( | ||
| "log" | ||
| "os" | ||
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| "github.com/nellcorp/vpos-go" | ||
| ) | ||
|
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| var ( | ||
| posID = os.Getenv("GPO_POS_ID") | ||
| token = os.Getenv("MERCHANT_VPOS_TOKEN") | ||
| paymentCallbackURL = os.Getenv("PAYMENT_CALLBACK_URL") | ||
| refundCallbackURL = os.Getenv("REFUND_CALLBACK_URL") | ||
| supervisorCard = os.Getenv("GPO_SUPERVISOR_CARD") | ||
| environment = os.Getenv("ENVIRONMENT") | ||
| ) | ||
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| func main() { | ||
| vpos := vposgo.NewVPOS( | ||
| posID, | ||
| token, | ||
| paymentCallbackURL, | ||
| refundCallbackURL, | ||
| supervisorCard, | ||
| environment | ||
| ) | ||
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| transactionType := "payment" // or "authorization" | ||
| mobile := "934174394" | ||
| amount := "2000.00" | ||
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| transactionID, idempotencyKey, nonce, timeRemaining, err := vpos.PaymentTransaction(transactionType, mobile, amount) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } | ||
| ``` | ||
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| | Argument | Description | Type | | ||
| | --- | --- | --- | | ||
| | `transactionType` | The transactionType is either 'payment' or 'authorization' | `string` | ||
| | `mobile` | The client mobile number in a string format. Must be a number registered in Multicaixa Express | `string` | ||
| | `amount` | Amount of the requested payment in a string format. Use (.) as decimals separator; at most 2 decimal places | `string` | ||
|
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| ### Payment Transaction with Authorization | ||
| Creates a new payment transaction from a previously accepted authorization transaction | ||
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| ```go | ||
| package main | ||
|
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| import ( | ||
| "log" | ||
| "os" | ||
|
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| "github.com/nellcorp/vpos-go" | ||
| ) | ||
|
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| var ( | ||
| posID = os.Getenv("GPO_POS_ID") | ||
| token = os.Getenv("MERCHANT_VPOS_TOKEN") | ||
| paymentCallbackURL = os.Getenv("PAYMENT_CALLBACK_URL") | ||
| refundCallbackURL = os.Getenv("REFUND_CALLBACK_URL") | ||
| supervisorCard = os.Getenv("GPO_SUPERVISOR_CARD") | ||
| environment = os.Getenv("ENVIRONMENT") | ||
| ) | ||
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| func main() { | ||
| vpos := vposgo.NewVPOS( | ||
| posID, | ||
| token, | ||
| paymentCallbackURL, | ||
| refundCallbackURL, | ||
| supervisorCard, | ||
| environment | ||
| ) | ||
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| parentTransactionID := "9kOmKYUWxN0Jpe4PBoXzE" | ||
| amount := "2000.00" | ||
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| transactionID, idempotencyKey, nonce, timeRemaining, err := vpos.PaymentWithAuthorization(parentTransactionID, amount) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } | ||
| ``` | ||
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| | Argument | Description | Type | | ||
| | --- | --- | --- | | ||
| | `parentTransactionID` | The ID of the accepted authorization transaction | `string` | ||
| | `amount` | Amount to capture. Must be equal or less than the amount of the authorization. Use (.) as decimals separator; at most 2 decimal places | `string` | ||
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| ### Request Refund or Request Transaction Cancelation | ||
| Given an `transactionType` existing `parentTransactionID`, request a refund or transaction cancelation. | ||
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| ```go | ||
| package main | ||
|
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| import ( | ||
| "log" | ||
| "os" | ||
|
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| "github.com/nellcorp/vpos-go" | ||
| ) | ||
|
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||
| var ( | ||
| posID = os.Getenv("GPO_POS_ID") | ||
| token = os.Getenv("MERCHANT_VPOS_TOKEN") | ||
| paymentCallbackURL = os.Getenv("PAYMENT_CALLBACK_URL") | ||
| refundCallbackURL = os.Getenv("REFUND_CALLBACK_URL") | ||
| supervisorCard = os.Getenv("GPO_SUPERVISOR_CARD") | ||
| environment = os.Getenv("ENVIRONMENT") | ||
| ) | ||
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| func main() { | ||
| vpos := vposgo.NewVPOS( | ||
| posID, | ||
| token, | ||
| paymentCallbackURL, | ||
| refundCallbackURL, | ||
| supervisorCard, | ||
| environment | ||
| ) | ||
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| transactionType := "refund" // or "cancelation" | ||
| parentTransactionID := "9kOmKYUWxN0Jpe4PBoXzE" | ||
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| transactionID, idempotencyKey, nonce, timeRemaining, err := vpos.RefundOrCancelation(transactionType, parentTransactionID) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } | ||
| ``` | ||
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| | Argument | Description | Type | | ||
| | --- | --- | --- | | ||
| | `transactionType` | The transactionType is either 'refund' or 'cancelation' | `string` | ||
| | `parentTransactionID` | This is a string value of the transaction id you're requesting to be refunded or canceled | `string` | ||
|
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| ### Get Transaction | ||
| This retrieves a specific transaction. | ||
|
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| ```go | ||
| package main | ||
|
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| import ( | ||
| "log" | ||
| "os" | ||
|
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| "github.com/nellcorp/vpos-go" | ||
| ) | ||
|
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| var ( | ||
| posID = os.Getenv("GPO_POS_ID") | ||
| token = os.Getenv("MERCHANT_VPOS_TOKEN") | ||
| paymentCallbackURL = os.Getenv("PAYMENT_CALLBACK_URL") | ||
| refundCallbackURL = os.Getenv("REFUND_CALLBACK_URL") | ||
| supervisorCard = os.Getenv("GPO_SUPERVISOR_CARD") | ||
| environment = os.Getenv("ENVIRONMENT") | ||
| ) | ||
|
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| func main() { | ||
| vpos := vposgo.NewVPOS( | ||
| posID, | ||
| token, | ||
| paymentCallbackURL, | ||
| refundCallbackURL, | ||
| supervisorCard, | ||
| environment | ||
| ) | ||
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| transactionID := "1jHbXEbRTIbbwaoJ6w06nLcRG7X" | ||
| transaction, err := vpos.GetTransaction(transactionID) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
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| /* | ||
| transaction = &Transaction{ | ||
| "amount": "101.09", | ||
| "clearing_period": null, | ||
| "id": "1jHbXEbRTIbbwaoJ6w06nLcRG7X", | ||
| "mobile": "900111222", | ||
| "parent_transaction_id": null, | ||
| "pos_id": 100, | ||
| "status": "accepted", | ||
| "status_datetime": "2020-10-23T14:41:00Z", | ||
| "status_reason": null, | ||
| "type": "payment" | ||
| } | ||
| */ | ||
| } | ||
| ``` | ||
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| | Argument | Description | Type | | ||
| | --- | --- | --- | | ||
| | `transactionID` | The ID of the transaction to retrieve | `string` | ||
|
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| We hope this module can be useful for you. Feel free to contribute and help to improve this package opening an `ISSUE` or `Pull Request` :grinning:. | ||
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| License | ||
| ---------------- | ||
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| The package is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT). | ||
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