(PureBasic) Amazon Pay - Get Charge Permission

See more Amazon Pay Examples

Get Charge Permission to determine if this Charge Permission can be used to charge the buyer.

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-permission.html#get-charge-permission

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkHttp.pb"
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkPrivateKey.pb"
IncludeFile "CkJsonObject.pb"

Procedure ChilkatExample()

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

    http.i = CkHttp::ckCreate()
    If http.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success.i

    ; Implements the following CURL command:

    ; curl "https://pay-api.amazon.com/:version/chargePermissions/:chargePermissionId"
    ; 	-X GET
    ; 	-H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
    ; 	-H "x-amz-pay-date:20201012T235046Z"

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

    ; 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.i = CkPrivateKey::ckCreate()
    If privKey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkPrivateKey::ckLoadPemFile(privKey,"C:/someDir/myAmazonPayPrivateKey.pem")
    If success = 0
        Debug CkPrivateKey::ckLastErrorText(privKey)
        CkHttp::ckDispose(http)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    EndIf

    ; 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.s = "SANDBOX-AHEGSJCM3L2S637RBGABLAFW"
    success = CkHttp::ckSetAuthPrivateKey(http,publicKeyId,privKey)
    If success = 0
        Debug CkHttp::ckLastErrorText(http)
        CkHttp::ckDispose(http)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    EndIf

    ; 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
    ; Authorization

    CkHttp::setCkAccept(http, "application/json")

    respStatusCode.i = 0

    sbResponseBody.i = CkStringBuilder::ckCreate()
    If sbResponseBody.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkHttp::ckSetUrlVar(http,"chargePermissionId","P21-1111111-1111111")
    ; To use the live system, replace "sandbox" with "live" in the URL passed to QuickGetSb.
    ; Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
    success = CkHttp::ckQuickGetSb(http,"https://pay-api.amazon.eu/sandbox/v2/chargePermissions/{$chargePermissionId}",sbResponseBody)
    If success = 0
        ; If the LastStatus is not equal to 0, then we received a response, but it was an error response.
        respStatusCode = CkHttp::ckLastStatus(http)
        If respStatusCode <> 0
            Debug "Response Status Code = " + Str(respStatusCode)
            Debug "Response body:"
            Debug CkHttp::ckLastResponseBody(http)
        Else
            Debug CkHttp::ckLastErrorText(http)
        EndIf

        CkHttp::ckDispose(http)
        CkPrivateKey::ckDispose(privKey)
        CkStringBuilder::ckDispose(sbResponseBody)
        ProcedureReturn
    EndIf

    jResp.i = CkJsonObject::ckCreate()
    If jResp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckLoadSb(jResp,sbResponseBody)
    CkJsonObject::setCkEmitCompact(jResp, 0)

    Debug "Response Body:"
    Debug CkJsonObject::ckEmit(jResp)

    respStatusCode = CkHttp::ckLastStatus(http)
    Debug "Response Status Code = " + Str(respStatusCode)
    ; We expect a 200 status code for success.
    ; Note: Some Amazon Pay API calls return 200 for success, others return 201.
    If respStatusCode <> 200
        Debug "Failed."
        CkHttp::ckDispose(http)
        CkPrivateKey::ckDispose(privKey)
        CkStringBuilder::ckDispose(sbResponseBody)
        CkJsonObject::ckDispose(jResp)
        ProcedureReturn
    EndIf

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

    ; {
    ;     "chargePermissionId": "chargePermission-1",
    ;     "chargePermissionReferenceId": null,
    ;     "buyer": {
    ;         "buyerId": "buyerId",
    ;         "name": "name-1",
    ;         "email": "name@amazon.com",
    ;         "phoneNumber": "800-000-0000",
    ;         "primeMembershipTypes": null
    ;     },
    ;     "releaseEnvironment": "Live",
    ;     "shippingAddress":{  // Null for PayOnly product type
    ;         "name": "Work",
    ;         "addressLine1": "440 Terry Ave",
    ;         "addressLine2": "",
    ;         "addressLine3": "",
    ;         "city": "Seattle",
    ;         "county": "King",
    ;         "district": "Seattle",
    ;         "stateOrRegion": "WA",
    ;         "postalCode": "98121",
    ;         "countryCode": "US",
    ;         "phoneNumber": "800-000-0000"
    ;     },
    ;     "billingAddress":{  // Only available in EU or for PayOnly product type
    ;         "name": "Work",
    ;         "addressLine1": "440 Terry Ave",
    ;         "addressLine2": "",
    ;         "addressLine3": "",
    ;         "city": "Seattle",
    ;         "county": "King",
    ;         "district": "Seattle",
    ;         "stateOrRegion": "WA",
    ;         "postalCode": "98121",
    ;         "countryCode": "US",
    ;         "phoneNumber": "800-000-0000"
    ;     },
    ;     "paymentPreferences":[{
    ;         "paymentDescriptor": null
    ;     }],
    ;     "statusDetails":{
    ;         "state": "Chargeable",
    ;         "reasons":null,
    ;         "lastUpdatedTimestamp": "20190714T155300Z"
    ;     },
    ;     "creationTimestamp": "20190714T155300Z",
    ;     "expirationTimestamp": "20190715T155300Z",
    ;     "merchantMetadata":{
    ;         "merchantReferenceId": "123-77-876", 
    ;         "merchantStoreName": "AmazonTestStoreFront",
    ;         "noteToBuyer": "merchantNoteForBuyer",
    ;         "customInformation": "This is custom information"
    ;     },
    ;     "platformId": "SPId",
    ;     "limits": {
    ;         "amountLimit": {
    ;             "amount": "14.00",
    ;             "currencyCode": "USD"
    ;         },
    ;         "amountBalance": {
    ;             "amount": "14.00",
    ;             "currencyCode": "USD"
    ;         }
    ;     },
    ;     "presentmentCurrency": "USD"
    ; }

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

    paymentDescriptor.s

    chargePermissionId.s = CkJsonObject::ckStringOf(jResp,"chargePermissionId")
    chargePermissionReferenceId.s = CkJsonObject::ckStringOf(jResp,"chargePermissionReferenceId")
    buyerBuyerId.s = CkJsonObject::ckStringOf(jResp,"buyer.buyerId")
    buyerName.s = CkJsonObject::ckStringOf(jResp,"buyer.name")
    buyerEmail.s = CkJsonObject::ckStringOf(jResp,"buyer.email")
    buyerPhoneNumber.s = CkJsonObject::ckStringOf(jResp,"buyer.phoneNumber")
    buyerPrimeMembershipTypes.s = CkJsonObject::ckStringOf(jResp,"buyer.primeMembershipTypes")
    releaseEnvironment.s = CkJsonObject::ckStringOf(jResp,"releaseEnvironment")
    shippingAddressName.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.name")
    shippingAddressAddressLine1.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.addressLine1")
    shippingAddressAddressLine2.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.addressLine2")
    shippingAddressAddressLine3.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.addressLine3")
    shippingAddressCity.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.city")
    shippingAddressCounty.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.county")
    shippingAddressDistrict.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.district")
    shippingAddressStateOrRegion.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.stateOrRegion")
    shippingAddressPostalCode.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.postalCode")
    shippingAddressCountryCode.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.countryCode")
    shippingAddressPhoneNumber.s = CkJsonObject::ckStringOf(jResp,"shippingAddress.phoneNumber")
    billingAddressName.s = CkJsonObject::ckStringOf(jResp,"billingAddress.name")
    billingAddressAddressLine1.s = CkJsonObject::ckStringOf(jResp,"billingAddress.addressLine1")
    billingAddressAddressLine2.s = CkJsonObject::ckStringOf(jResp,"billingAddress.addressLine2")
    billingAddressAddressLine3.s = CkJsonObject::ckStringOf(jResp,"billingAddress.addressLine3")
    billingAddressCity.s = CkJsonObject::ckStringOf(jResp,"billingAddress.city")
    billingAddressCounty.s = CkJsonObject::ckStringOf(jResp,"billingAddress.county")
    billingAddressDistrict.s = CkJsonObject::ckStringOf(jResp,"billingAddress.district")
    billingAddressStateOrRegion.s = CkJsonObject::ckStringOf(jResp,"billingAddress.stateOrRegion")
    billingAddressPostalCode.s = CkJsonObject::ckStringOf(jResp,"billingAddress.postalCode")
    billingAddressCountryCode.s = CkJsonObject::ckStringOf(jResp,"billingAddress.countryCode")
    billingAddressPhoneNumber.s = CkJsonObject::ckStringOf(jResp,"billingAddress.phoneNumber")
    statusDetailsState.s = CkJsonObject::ckStringOf(jResp,"statusDetails.state")
    statusDetailsReasons.s = CkJsonObject::ckStringOf(jResp,"statusDetails.reasons")
    statusDetailsLastUpdatedTimestamp.s = CkJsonObject::ckStringOf(jResp,"statusDetails.lastUpdatedTimestamp")
    creationTimestamp.s = CkJsonObject::ckStringOf(jResp,"creationTimestamp")
    expirationTimestamp.s = CkJsonObject::ckStringOf(jResp,"expirationTimestamp")
    merchantMetadataMerchantReferenceId.s = CkJsonObject::ckStringOf(jResp,"merchantMetadata.merchantReferenceId")
    merchantMetadataMerchantStoreName.s = CkJsonObject::ckStringOf(jResp,"merchantMetadata.merchantStoreName")
    merchantMetadataNoteToBuyer.s = CkJsonObject::ckStringOf(jResp,"merchantMetadata.noteToBuyer")
    merchantMetadataCustomInformation.s = CkJsonObject::ckStringOf(jResp,"merchantMetadata.customInformation")
    platformId.s = CkJsonObject::ckStringOf(jResp,"platformId")
    limitsAmountLimitAmount.s = CkJsonObject::ckStringOf(jResp,"limits.amountLimit.amount")
    limitsAmountLimitCurrencyCode.s = CkJsonObject::ckStringOf(jResp,"limits.amountLimit.currencyCode")
    limitsAmountBalanceAmount.s = CkJsonObject::ckStringOf(jResp,"limits.amountBalance.amount")
    limitsAmountBalanceCurrencyCode.s = CkJsonObject::ckStringOf(jResp,"limits.amountBalance.currencyCode")
    presentmentCurrency.s = CkJsonObject::ckStringOf(jResp,"presentmentCurrency")
    i.i = 0
    count_i.i = CkJsonObject::ckSizeOfArray(jResp,"paymentPreferences")
    While i < count_i
        CkJsonObject::setCkI(jResp, i)
        paymentDescriptor = CkJsonObject::ckStringOf(jResp,"paymentPreferences[i].paymentDescriptor")
        i = i + 1
    Wend


    CkHttp::ckDispose(http)
    CkPrivateKey::ckDispose(privKey)
    CkStringBuilder::ckDispose(sbResponseBody)
    CkJsonObject::ckDispose(jResp)


    ProcedureReturn
EndProcedure