(DataFlex) WhatsApp - Download/Retrieve Media

Demonstrates how to download media previously uploaded to the WhatsApp Business API client

For more information, see https://developers.facebook.com/docs/whatsapp/api/media#retrieve

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoHttp
    Boolean iSuccess
    Variant vBdResponseBody
    Handle hoBdResponseBody
    Integer iRespStatusCode
    String sTemp1

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

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End

    // Implements the following CURL command:

    // curl -X GET \
    //   https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f \
    //   -H 'Authorization: Bearer your-auth-token' \
    //   -o path/filename

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

    // Adds the "Authorization: Bearer your-auth-token" header.
    Set ComAuthToken Of hoHttp To "your-auth-token"

    Get Create (RefClass(cComChilkatBinData)) To hoBdResponseBody
    If (Not(IsComObjectCreated(hoBdResponseBody))) Begin
        Send CreateComObject of hoBdResponseBody
    End
    Get pvComObject of hoBdResponseBody to vBdResponseBody
    Get ComQuickGetBd Of hoHttp "https://your-webapp-hostname:your-webapp-port/v1/media/4b5bf27b-8672-4d55-bc21-d096dc200d0f" vBdResponseBody To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComLastStatus Of hoHttp To iRespStatusCode
    Showln "response status code = " iRespStatusCode
    Get ComLastResponseHeader Of hoHttp To sTemp1
    Showln "response header = " sTemp1

    If (iRespStatusCode <> 200) Begin
        Showln "Error response body:"
        Get ComGetString Of hoBdResponseBody "utf-8" To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComWriteFile Of hoBdResponseBody "path/filename" To iSuccess


End_Procedure