PowerBuilder

WhatsApp - Send a Previously Uploaded Media Message

Demonstrates how to send a media message where the media content was previously uploaded. PowerBuilder

integer li_rc
long li_Success
oleobject loo_Http
oleobject loo_Json
oleobject loo_Resp
oleobject loo_SbResponseBody
oleobject loo_JResp
long li_RespStatusCode
string ls_Id
long i
long li_Count_i

li_Success = 0

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

loo_Http = create oleobject
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  Implements the following CURL command:

//  curl -X POST https://example.com/v1/messages \
//    -H "Authorization: Bearer your-auth-token" \
//    -d '
//  {
//      "recipient_type": "individual-or-group",
//      "to": "whatsapp-id-or-group-id",
//      "type": "image",
//      "image": {
//       "id": "your-media-id",
//        "caption": "your-image-caption"
//      }
//  }'

//  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.

//  {
//    "recipient_type": "individual-or-group",
//    "to": "whatsapp-id-or-group-id",
//    "type": "image",
//    "image": {
//      "id": "your-media-id",
//      "caption": "your-image-caption"
//    }
//  }

loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.UpdateString("recipient_type","individual-or-group")
loo_Json.UpdateString("to","whatsapp-id-or-group-id")
loo_Json.UpdateString("type","image")
loo_Json.UpdateString("image.id","your-media-id")
loo_Json.UpdateString("image.caption","your-image-caption")

//  Adds the "Authorization: Bearer your-auth-token" header.
loo_Http.AuthToken = "your-auth-token"

loo_Resp = create oleobject
li_rc = loo_Resp.ConnectToNewObject("Chilkat.HttpResponse")

li_Success = loo_Http.HttpJson("POST","https://example.com/v1/messages",loo_Json,"application/json",loo_Resp)
if li_Success = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Json
    destroy loo_Resp
    return
end if

loo_SbResponseBody = create oleobject
li_rc = loo_SbResponseBody.ConnectToNewObject("Chilkat.StringBuilder")

loo_Resp.GetBodySb(loo_SbResponseBody)
loo_JResp = create oleobject
li_rc = loo_JResp.ConnectToNewObject("Chilkat.JsonObject")

loo_JResp.LoadSb(loo_SbResponseBody)
loo_JResp.EmitCompact = 0

Write-Debug "Response Body:"
Write-Debug loo_JResp.Emit()

li_RespStatusCode = loo_Resp.StatusCode
Write-Debug "Response Status Code = " + string(li_RespStatusCode)
if li_RespStatusCode >= 400 then
    Write-Debug "Response Header:"
    Write-Debug loo_Resp.Header
    Write-Debug "Failed."
    destroy loo_Http
    destroy loo_Json
    destroy loo_Resp
    destroy loo_SbResponseBody
    destroy loo_JResp
    return
end if

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

//  {
//    "messages": [
//      {
//        "id": "gBEGkYiEB1VXAglK1ZEqA1YKPrU"
//      }
//    ]
//  }

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

i = 0
li_Count_i = loo_JResp.SizeOfArray("messages")
do while i < li_Count_i
    loo_JResp.I = i
    ls_Id = loo_JResp.StringOf("messages[i].id")
    i = i + 1
loop


destroy loo_Http
destroy loo_Json
destroy loo_Resp
destroy loo_SbResponseBody
destroy loo_JResp