(Go) Amazon Pay - Create Charge

See more Amazon Pay Examples

Creates a Charge to authorize payment, if you have a Charge Permission in a Chargeable state. You can optionally capture payment immediately by setting captureNow to true. You can create up to 25 Charges per one-time Charge Permission.

Note: This example requires Chilkat v9.5.0.89 or later. Contact support@chilkatsoft.com to get a v9.5.0.89 pre-release for testing.

For more information, see https://developer.amazon.com/docs/amazon-pay-api-v2/charge.html#create-charge

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    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    http := chilkat.NewHttp()
    var success bool

    // Implements the following CURL command:

    // curl "https://pay-api.amazon.com/:version/charges/" \
    // -X POST
    // -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
    // -H "x-amz-pay-date:20201012T235046Z"
    // -H "x-amz-pay-idempotency-key:AVLo5tI10BHgEk2jEXAMPLEKEY"
    // -d '{
    //     "chargePermissionId": "P21-1111111-1111111",
    //     "chargeAmount": {
    //         "amount": "14.00",
    //         "currencyCode": "USD"
    //     },
    //     "captureNow": true, // default is false
    //     "softDescriptor": "Descriptor",
    //     "canHandlePendingAuthorization": false //default is false
    // }'

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    // The following JSON is sent in the request body.

    // {
    //     "chargePermissionId": "P21-1111111-1111111",
    //     "chargeAmount": {
    //         "amount": "14.00",
    //         "currencyCode": "USD"
    //     },
    //     "captureNow": true, // default is false
    //     "softDescriptor": "Descriptor",
    //     "canHandlePendingAuthorization": false //default is false
    // }

    json := chilkat.NewJsonObject()
    json.UpdateString("chargePermissionId","P21-1111111-1111111")
    json.UpdateString("chargeAmount.amount","14.00")
    json.UpdateString("chargeAmount.currencyCode","USD")
    json.UpdateBool("captureNow",true)
    json.UpdateString("softDescriptor","Descriptor")
    json.UpdateBool("canHandlePendingAuthorization",false)

    // Load your Amazon Pay private key.  
    // There are many other ways to load private keys into the Chilkat private key object, such as from different formats,
    // or from in-memory strings or bytes.
    privKey := chilkat.NewPrivateKey()
    success = privKey.LoadPemFile("C:/someDir/myAmazonPayPrivateKey.pem")
    if success == false {
        fmt.Println(privKey.LastErrorText())
        http.DisposeHttp()
        json.DisposeJsonObject()
        privKey.DisposePrivateKey()
        return
    }

    // Provide your Amazon Pay private key and Public Key ID 
    // Use your public key ID here.  It must be the one associated with the private key.
    // Note: The SetAuthPrivateKey method was added in Chilkat v9.5.0.89
    publicKeyId := "SANDBOX-AHEGSJCM3L2S637RBGABLAFW"
    success = http.SetAuthPrivateKey(publicKeyId,privKey)
    if success == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        json.DisposeJsonObject()
        privKey.DisposePrivateKey()
        return
    }

    // Note: When the private key is provided as shown above, Chilkat will automatically add the required x-amz-pay-* headers to the HTTP request,
    // and will also sign the request.  Nothing more is needed.
    // Chilkat automatically generates and adds the following headers:
    // 
    // x-amz-pay-date
    // x-amz-pay-host
    // x-amz-pay-region
    // x-amz-pay-idempotency-key
    // Authorization

    http.SetAccept("application/json")

    // To use the live system, replace "sandbox" with "live" in the URL passed to PostJson3.
    // Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
    resp := http.PostJson3("https://pay-api.amazon.eu/sandbox/v2/charges/","application/json",json)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        json.DisposeJsonObject()
        privKey.DisposePrivateKey()
        return
    }

    sbResponseBody := chilkat.NewStringBuilder()
    resp.GetBodySb(sbResponseBody)
    jResp := chilkat.NewJsonObject()
    jResp.LoadSb(sbResponseBody)
    jResp.SetEmitCompact(false)

    // If the status code is not equal to 201, this will display error information.
    fmt.Println("Response Body:")
    fmt.Println(*jResp.Emit())

    respStatusCode := resp.StatusCode()
    fmt.Println("Response Status Code = ", respStatusCode)
    if respStatusCode != 201 {
        fmt.Println("Failed.")
        resp.DisposeHttpResponse()
        http.DisposeHttp()
        json.DisposeJsonObject()
        privKey.DisposePrivateKey()
        sbResponseBody.DisposeStringBuilder()
        jResp.DisposeJsonObject()
        return
    }

    resp.DisposeHttpResponse()

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //      "chargeId": "P21-1111111-1111111-C111111",
    //      "chargePermissionId": "P21-1111111-1111111",
    //      "chargeAmount": {
    //          "amount": "14.00",
    //          "currencyCode": "USD"
    //      },
    //      "captureAmount": {
    //          "amount": "14.00",
    //          "currencyCode": "USD"
    //      },
    //      "refundedAmount": {
    //          "amount": "0.00",
    //          "currencyCode": "USD"
    //      },
    //      "convertedAmount": "14.00",
    //      "conversionRate": "1.00",
    //      "softDescriptor": "Descriptor",
    //      "merchantMetadata": null,
    //      "providerMetadata": {
    //          "providerReferenceId": null
    //      },
    //      "statusDetails":{
    //          "state": "Captured",
    //          "reasonCode": null,
    //          "reasonDescription": null,
    //          "lastUpdatedTimestamp": "20190714T155300Z"
    //      },
    //      "creationTimestamp": "20190714T155300Z",
    //      "expirationTimestamp": "20190715T155300Z",
    //      "releaseEnvironment": "Sandbox"
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    chargeId := jResp.StringOf("chargeId")
    chargePermissionId := jResp.StringOf("chargePermissionId")
    chargeAmountAmount := jResp.StringOf("chargeAmount.amount")
    chargeAmountCurrencyCode := jResp.StringOf("chargeAmount.currencyCode")
    captureAmountAmount := jResp.StringOf("captureAmount.amount")
    captureAmountCurrencyCode := jResp.StringOf("captureAmount.currencyCode")
    refundedAmountAmount := jResp.StringOf("refundedAmount.amount")
    refundedAmountCurrencyCode := jResp.StringOf("refundedAmount.currencyCode")
    convertedAmount := jResp.StringOf("convertedAmount")
    conversionRate := jResp.StringOf("conversionRate")
    softDescriptor := jResp.StringOf("softDescriptor")
    merchantMetadata := jResp.StringOf("merchantMetadata")
    providerMetadataProviderReferenceId := jResp.StringOf("providerMetadata.providerReferenceId")
    statusDetailsState := jResp.StringOf("statusDetails.state")
    statusDetailsReasonCode := jResp.StringOf("statusDetails.reasonCode")
    statusDetailsReasonDescription := jResp.StringOf("statusDetails.reasonDescription")
    statusDetailsLastUpdatedTimestamp := jResp.StringOf("statusDetails.lastUpdatedTimestamp")
    creationTimestamp := jResp.StringOf("creationTimestamp")
    expirationTimestamp := jResp.StringOf("expirationTimestamp")
    releaseEnvironment := jResp.StringOf("releaseEnvironment")

    http.DisposeHttp()
    json.DisposeJsonObject()
    privKey.DisposePrivateKey()
    sbResponseBody.DisposeStringBuilder()
    jResp.DisposeJsonObject()