Classic ASP
Download Google Contact Photo

Demonstrates how to download Google Contact's photo.
Chilkat Classic ASP Downloads

Classic ASP
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<%
success = 0

' 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

set jsonToken = Server.CreateObject("Chilkat.JsonObject")
success = jsonToken.LoadFile("qa_data/tokens/googleContacts.json")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Failed to load googleContacts.json") & "</pre>"
    Response.End
End If

set gAuth = Server.CreateObject("Chilkat.AuthGoogle")
gAuth.AccessToken = jsonToken.StringOf("access_token")

set rest = Server.CreateObject("Chilkat.Rest")

' Connect using TLS.
bAutoReconnect = 1
success = rest.Connect("www.google.com",443,1,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")

set sbPath = Server.CreateObject("Chilkat.StringBuilder")
' Get the photo for the contact having contactId = "1ea2e4fe0ef24e09"
contactId = "1ea2e4fe0ef24e09"
success = sbPath.SetString("/m8/feeds/photos/media/default/{contactId}")
numReplacements = sbPath.Replace("{contactId}",contactId)

set imageData = Server.CreateObject("Chilkat.BinData")
success = rest.FullRequestNoBodyBd("GET",sbPath.GetAsString(),imageData)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
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
    Response.Write "<pre>" & Server.HTMLEncode( "This contact has no photo.") & "</pre>"
    Response.End
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.
    set sbResponseBody = Server.CreateObject("Chilkat.StringBuilder")
    success = sbResponseBody.AppendBd(imageData,"utf-8",0,0)

    Response.Write "<pre>" & Server.HTMLEncode( "response status code = " & rest.ResponseStatusCode) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "response status text = " & rest.ResponseStatusText) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "response header: " & rest.ResponseHeader) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "response body: " & sbResponseBody.GetAsString()) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "request startline: " & rest.LastRequestStartLine) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "request header: " & rest.LastRequestHeader) & "</pre>"
    Response.End
End If

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

If (sbContentType.ContentsEqual("image/jpeg",0) = 1) Then
    success = imageData.WriteFile("qa_output/contact_photo.jpg")
End If

If (sbContentType.ContentsEqual("image/png",0) = 1) Then
    success = imageData.WriteFile("qa_output/contact_photo.png")
End If

Response.Write "<pre>" & Server.HTMLEncode( "Content-Type: " & sbContentType.GetAsString()) & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( "Success.") & "</pre>"

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