(Xojo Plugin) 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 Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

// 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..
Dim jsonToken As New Chilkat.JsonObject
Dim success As Boolean
success = jsonToken.LoadFile("qa_data/tokens/twitter.json")

Dim http As New Chilkat.Http

// Provide the OAuth 1.0a credentials:
http.OAuth1 = True
http.OAuthConsumerKey = "TWITTER_CONSUMER_KEY"
http.OAuthConsumerSecret = "TWITTER_CONSUMER_SECRET"
http.OAuthToken = jsonToken.StringOf("oauth_token")
http.OAuthTokenSecret = jsonToken.StringOf("oauth_token_secret")

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.ContentType = "multipart/form-data"
req.Path = "/1.1/media/upload.json"

req.AddHeader "Expect","100-continue"

// Add a JPEG image file to the upload.
Dim fac As New Chilkat.FileAccess
Dim jpgBytes As MemoryBlock
jpgBytes = fac.ReadEntireFile("qa_data/jpg/starfish.jpg")
success = req.AddBytesForUpload("media","starfish.jpg",jpgBytes)

Dim resp As Chilkat.HttpResponse
resp = http.SynchronousRequest("upload.twitter.com",443,True,req)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

Dim jsonResponse As New Chilkat.JsonObject
jsonResponse.EmitCompact = False
success = jsonResponse.Load(resp.BodyStr)

If (resp.StatusCode <> 200) Then
    System.DebugLog(jsonResponse.Emit())
    Return
End If

// Show the successful response:
System.DebugLog(jsonResponse.Emit())
System.DebugLog("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:
System.DebugLog("media_id_string = " + jsonResponse.StringOf("media_id_string"))
System.DebugLog("size = " + Str(jsonResponse.IntOf("size")))
System.DebugLog("image_type = " + jsonResponse.StringOf("image.image_type"))
System.DebugLog("height/width = " + Str(jsonResponse.IntOf("image.w")) + "," + Str(jsonResponse.IntOf("image.h")))