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https://github.com/ndolestudio/mtnmomo-go

MTN Mobile Money API Client in Go
https://github.com/ndolestudio/mtnmomo-go

api-client mtn mtnmobilemoney mtnmomo

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MTN Mobile Money API Client in Go

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# mtnmomo-go

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This package provides a generic `go` client template for the MTN Mobile Money API

## Installation

`mtnmomo-go` is compatible with modern Go releases in module mode, with Go installed:

```bash
go get github.com/NdoleStudio/mtnmomo-go
```

Alternatively the same can be achieved if you use `import` in a package:

```go
import "github.com/NdoleStudio/mtnmomo-go"
```

## Implemented

- [API User](#api-user)
- `POST {baseURL}/apiuser`: Create API User
- `POST {baseURL}/apiuser/{APIUser}/apikey`: Create API Key
- `GET {baseURL}/apiuser/{APIUser}`: Get API user information
- [Collection](#collection)
- `POST {baseURL}/collection/token/`: Create access token
- `POST {baseURL}/collection/v1_0/requesttopay`: Request a payment from a consumer
- `GET {baseURL}/collection/v1_0/requesttopay/{referenceId}`: Get the status of a request to pay
- `GET {baseURL}/collection/v1_0/account/balance`: Get the balance of the account
- **Disbursements**
- `POST {baseURL}/disbursement/token/`: Create access token
- `POST {baseURL}/disbursement/v1_0/transfer`: Transfer money to a customer's account.
- `GET {baseURL}/disbursement/v1_0/transfer/{referenceId}`: Get the status of a transfer.
- `GET {baseURL}/disbursement/v1_0/account/balance`: Get the balance of the disbursement account

## Usage

### Initializing the Client

An instance of the client can be created using `New()`.

```go
package main

import (
"github.com/NdoleStudio/mtnmomo-go"
)

func main() {
client := mtnmomo.New(
mtnmomo.WithBaseURL("https://sandbox.momodeveloper.mtn.com/v1_0"),
mtnmomo.WithSubscriptionKey(""/* Subscription key */),
)
}
```

### Error handling

All API calls return an `error` as the last return object. All successful calls will return a `nil` error.

```go
apiUser, response, err := statusClient.APIUser.CreateAPIUser(context.Background())
if err != nil {
//handle error
}
```

### API User

#### `POST {baseURL}/apiuser`: Create API User

Used to create an API user in the sandbox target environment.

```go
userID, response, err := client.APIUser.CreateAPIUser(
context.Background(),
uuid.NewString(),
"providerCallbackHost",
)

if err != nil {
log.Fatal(err)
}

log.Println(response.HTTPResponse.StatusCode) // 201
```

#### `POST {baseURL}/apiuser/{APIUser}/apikey`: Create API Key

Used to create an API key for an API user in the sandbox target environment.

```go
apiKey, response, err := client.APIUser.CreateAPIKey(context.Background(), "userID")

if err != nil {
log.Fatal(err)
}

log.Println(apiKey) // e.g "f1db798c98df4bcf83b538175893bbf0"
```

#### `GET {baseURL}/apiuser/{APIUser}`: Get API user information

Used to get API user information.

```go
apiUser, response, err := client.APIUser.CreateAPIKey(context.Background(), "userID")

if err != nil {
log.Fatal(err)
}

log.Println(apiUser.TargetEnvironment) // e.g "sandbox"
```

### Collection

#### `POST {baseURL}/collection/token/`: Create access token

This operation is used to create an access token which can then be used to authorize and authenticate towards the other end-points of the API.

```go
authToken, response, err := client.Collection.Token(context.Background())
if err != nil {
log.Fatal(err)
}

log.Println(authToken.AccessToken) // e.g eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9....
```

#### `POST {baseURL}/collection/v1_0/requesttopay`: Request a payment from a consumer

This operation is used to request a payment from a consumer (Payer). The payer will be asked to authorize the payment. The transaction will be executed once the payer has authorized the payment.

```go
callbackURL := "http://callback-url.com"
response, err := client.Collection.RequestToPay(
context.Background(),
referenceID,
&mtnmomo.RequestToPayParams{
Amount: "10",
Currency: "EUR",
ExternalID: uuid.NewString(),
Payer: &mtnmomo.RequestToPayPayer{
PartyIDType: "MSISDN",
PartyID: "673978334",
},
PayerMessage: "Test Payer Message",
PayeeNote: "Test Payee Note",
},
&callbackURL,
)

if err != nil {
log.Fatal(err)
}

log.Println(response.HTTPResponse.StatusCode) // e.g 201 (Accepted)
```

#### `GET {baseURL}/collection/v1_0/requesttopay/{referenceId}`: Get the status of a request to pay

This operation is used to get the status of a request to pay. X-Reference-Id that was passed in the post is used as reference to the request.

```go
status, _, err := client.Collection.GetRequestToPayStatus(context.Background(), referenceID)
if err != nil {
log.Fatal(err)
}

log.Println(status.Status) // SUCCESSFUL
```

#### `GET {baseURL}/collection/v1_0/account/balance`: Get the balance of the account

```go
balance, _, err := client.Collection.GetAccountBalance(context.Background())
if err != nil {
log.Fatal(err)
}
log.Println(balance.AvailableBalance) // "1000"
```

## Testing

You can run the unit tests for this client from the root directory using the command below:

```bash
go test -v
```

### Security

If you discover any security related issues, please email [email protected] instead of using the GitHub issues.

## Credits

- [Acho Arnold](https://github.com/achoarnold)
- [All Contributors](../../contributors)
- [Go HTTP Client Template](https://github.com/NdoleStudio/go-http-client)

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details