(PowerBuilder) Upload Media to Twitter

Demonstrates uploading image or video files to Twitter. After uploading, the media_id can be used to attach the uploaded media to a tweet.

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

integer li_rc
oleobject loo_JsonToken
integer li_Success
oleobject loo_Http
oleobject loo_Req
oleobject loo_Fac
oleobject loo_Resp
oleobject loo_JsonResponse

// It requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Assume we've previously obtained an access token and saved it to a JSON file..
loo_JsonToken = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_JsonToken.ConnectToNewObject("Chilkat.JsonObject")
if li_rc < 0 then
    destroy loo_JsonToken
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_JsonToken.LoadFile("qa_data/tokens/twitter.json")

loo_Http = create oleobject
// Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")

// Provide the OAuth 1.0a credentials:
loo_Http.OAuth1 = 1
loo_Http.OAuthConsumerKey = "TWITTER_CONSUMER_KEY"
loo_Http.OAuthConsumerSecret = "TWITTER_CONSUMER_SECRET"
loo_Http.OAuthToken = loo_JsonToken.StringOf("oauth_token")
loo_Http.OAuthTokenSecret = loo_JsonToken.StringOf("oauth_token_secret")

loo_Req = create oleobject
// Use "Chilkat_9_5_0.HttpRequest" for versions of Chilkat < 10.0.0
li_rc = loo_Req.ConnectToNewObject("Chilkat.HttpRequest")

loo_Req.HttpVerb = "POST"
loo_Req.ContentType = "multipart/form-data"
loo_Req.Path = "/1.1/media/upload.json"

loo_Req.AddHeader("Expect","100-continue")

// Add a JPEG image file to the upload.
loo_Fac = create oleobject
// Use "Chilkat_9_5_0.FileAccess" for versions of Chilkat < 10.0.0
li_rc = loo_Fac.ConnectToNewObject("Chilkat.FileAccess")

loo_JpgBytes = loo_Fac.ReadEntireFile("qa_data/jpg/starfish.jpg")
loo_Req.AddBytesForUpload("media","starfish.jpg",loo_JpgBytes)

loo_Resp = loo_Http.SynchronousRequest("upload.twitter.com",443,1,loo_Req)
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_JsonToken
    destroy loo_Http
    destroy loo_Req
    destroy loo_Fac
    return
end if

loo_JsonResponse = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_JsonResponse.ConnectToNewObject("Chilkat.JsonObject")

loo_JsonResponse.EmitCompact = 0
loo_JsonResponse.Load(loo_Resp.BodyStr)

if loo_Resp.StatusCode <> 200 then
    Write-Debug loo_JsonResponse.Emit()
    destroy loo_JsonToken
    destroy loo_Http
    destroy loo_Req
    destroy loo_Fac
    destroy loo_JsonResponse
    return
end if

destroy loo_Resp

// Show the successful response:
Write-Debug loo_JsonResponse.Emit()
Write-Debug "Success."

// A successful JSON response looks like this:

// 	{
// 	  "media_id": 793137045996646400,
// 	  "media_id_string": "793137045996646400",
// 	  "size": 6229,
// 	  "expires_after_secs": 86400,
// 	  "image": {
// 	    "image_type": "image\/jpeg",
// 	    "w": 120,
// 	    "h": 120
// 	  }
// 	}
// 

// Get the information from the JSON:
Write-Debug "media_id_string = " + loo_JsonResponse.StringOf("media_id_string")
Write-Debug "size = " + string(loo_JsonResponse.IntOf("size"))
Write-Debug "image_type = " + loo_JsonResponse.StringOf("image.image_type")
Write-Debug "height/width = " + string(loo_JsonResponse.IntOf("image.w")) + "," + string(loo_JsonResponse.IntOf("image.h"))


destroy loo_JsonToken
destroy loo_Http
destroy loo_Req
destroy loo_Fac
destroy loo_JsonResponse