Xojo Plugin

Download Google Contact Photo

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Demonstrates how to download Google Contact's photo. Xojo Plugin

Dim success As Boolean
success = False

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

// --------------------------------------------------------------------------------------------------------
// Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
// Once connected, the REST object may be re-used for many REST API calls.
// (It's a good idea to put the connection setup code in a separate function/subroutine.)
// --------------------------------------------------------------------------------------------------------

// It is assumed we previously obtained an OAuth2 access token.
// This example loads the JSON access token file 
// saved by this example: Get Google Contacts OAuth2 Access Token

Dim jsonToken As New Chilkat.JsonObject
success = jsonToken.LoadFile("qa_data/tokens/googleContacts.json")
If (success <> True) Then
    System.DebugLog("Failed to load googleContacts.json")
    Return
End If

Dim gAuth As New Chilkat.AuthGoogle
gAuth.AccessToken = jsonToken.StringOf("access_token")

Dim rest As New Chilkat.Rest

// Connect using TLS.
Dim bAutoReconnect As Boolean
bAutoReconnect = True
success = rest.Connect("www.google.com",443,True,bAutoReconnect)

// Provide the authentication credentials (i.e. the access token)
success = rest.SetAuthGoogle(gAuth)

// ----------------------------------------------
// OK, the REST connection setup is completed..
// ----------------------------------------------

// To get the photo, send the following:

// 	GET /m8/feeds/photos/media/default/contactId

success = rest.AddHeader("GData-Version","3.0")

Dim sbPath As New Chilkat.StringBuilder
// Get the photo for the contact having contactId = "1ea2e4fe0ef24e09"
Dim contactId As String
contactId = "1ea2e4fe0ef24e09"
success = sbPath.SetString("/m8/feeds/photos/media/default/{contactId}")
Dim numReplacements As Int32
numReplacements = sbPath.Replace("{contactId}",contactId)

Dim imageData As New Chilkat.BinData
success = rest.FullRequestNoBodyBd("GET",sbPath.GetAsString(),imageData)
If (success <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

// A 404 response indicates the contact has no photo.
// (We could've first fetched the contact information, parsed out the 
// photo etag, and then if no photo etag existed, we'd know the contact has no
// photo.  Or... we can just try to download the photo and if a 404 is received,
// we know there's no photo.  Much simpler.)
If (rest.ResponseStatusCode = 404) Then
    System.DebugLog("This contact has no photo.")
    Return
End If

// A successful response will have a status code equal to 200.
If (rest.ResponseStatusCode <> 200) Then
    // If the response was not successful, then the response body
    // does not contain image data.  Instead it contains XML.
    Dim sbResponseBody As New Chilkat.StringBuilder
    success = sbResponseBody.AppendBd(imageData,"utf-8",0,0)

    System.DebugLog("response status code = " + Str(rest.ResponseStatusCode))
    System.DebugLog("response status text = " + rest.ResponseStatusText)
    System.DebugLog("response header: " + rest.ResponseHeader)
    System.DebugLog("response body: " + sbResponseBody.GetAsString())
    System.DebugLog("request startline: " + rest.LastRequestStartLine)
    System.DebugLog("request header: " + rest.LastRequestHeader)
    Return
End If

// Examine the content-type in the response header so we know what file
// extension to use (.jpg, .png, etc.)
Dim sbContentType As New Chilkat.StringBuilder
success = sbContentType.Append(rest.ResponseHdrByName("Content-Type"))

If (sbContentType.ContentsEqual("image/jpeg",False) = True) Then
    success = imageData.WriteFile("qa_output/contact_photo.jpg")
End If

If (sbContentType.ContentsEqual("image/png",False) = True) Then
    success = imageData.WriteFile("qa_output/contact_photo.png")
End If

System.DebugLog("Content-Type: " + sbContentType.GetAsString())
System.DebugLog("Success.")