PowerBuilder

Google Contacts - Delete a Contact

See more Google APIs Examples

Demonstrates how to delete a Google Contact. PowerBuilder

integer li_rc
long li_Success
oleobject loo_JsonToken
oleobject loo_GAuth
oleobject loo_Rest
long li_BAutoReconnect
oleobject loo_SbPath
long li_NumReplacements
oleobject loo_SbResponseBody
oleobject loo_Xml
string ls_LastKnownEtag

li_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

loo_JsonToken = create oleobject
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/googleContacts.json")
if li_Success <> 1 then
    Write-Debug "Failed to load googleContacts.json"
    destroy loo_JsonToken
    return
end if

loo_GAuth = create oleobject
li_rc = loo_GAuth.ConnectToNewObject("Chilkat.AuthGoogle")

loo_GAuth.AccessToken = loo_JsonToken.StringOf("access_token")

loo_Rest = create oleobject
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")

//  Connect using TLS.
li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("www.google.com",443,1,li_BAutoReconnect)

//  Provide the authentication credentials (i.e. the access token)
loo_Rest.SetAuthGoogle(loo_GAuth)

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

//  To update a contact, we'll first get the contact information
//  to get the etag.

//  To retrieve the contact, send the following:
//  	GET /m8/feeds/contacts/default/full/{contactId}
//  	GData-Version: 3.0

loo_Rest.AddHeader("GData-Version","3.0")

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

loo_SbPath.Append("/m8/feeds/contacts/default/full/{contactId}")
//  Get the contact having contactId = "5b6d64980b1ed462"
li_NumReplacements = loo_SbPath.Replace("{contactId}","5b6d64980b1ed462")

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

li_Success = loo_Rest.FullRequestNoBodySb("GET",loo_SbPath.GetAsString(),loo_SbResponseBody)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_JsonToken
    destroy loo_GAuth
    destroy loo_Rest
    destroy loo_SbPath
    destroy loo_SbResponseBody
    return
end if

//  A successful response will have a status code equal to 200.
if loo_Rest.ResponseStatusCode <> 200 then
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    Write-Debug "response body: " + loo_SbResponseBody.GetAsString()
    destroy loo_JsonToken
    destroy loo_GAuth
    destroy loo_Rest
    destroy loo_SbPath
    destroy loo_SbResponseBody
    return
end if

//  If the 200 response was received, then the contacts XML is contained
//  in the response body.
loo_Xml = create oleobject
li_rc = loo_Xml.ConnectToNewObject("Chilkat.Xml")

loo_Xml.LoadSb(loo_SbResponseBody,0)

Write-Debug loo_Xml.GetXml()
Write-Debug "-------------------"

//  Get the etag:
ls_LastKnownEtag = loo_Xml.GetAttrValue("gd:etag")
Write-Debug "lastKnownEtag = " + ls_LastKnownEtag
Write-Debug "-------------------"

//  To delete, send the following:

//  	DELETE /m8/feeds/contacts/default/full/{contactId}
//  	If-Match: {lastKnownEtag}
//  	GData-Version: 3.0

loo_Rest.ClearAllHeaders()
loo_Rest.AddHeader("If-Match",ls_LastKnownEtag)
loo_Rest.AddHeader("GData-Version","3.0")

//  The sbPath already contains the correct path..
li_Success = loo_Rest.FullRequestNoBodySb("DELETE",loo_SbPath.GetAsString(),loo_SbResponseBody)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_JsonToken
    destroy loo_GAuth
    destroy loo_Rest
    destroy loo_SbPath
    destroy loo_SbResponseBody
    destroy loo_Xml
    return
end if

//  A successful response will have a status code equal to 200.
if loo_Rest.ResponseStatusCode <> 200 then
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    Write-Debug "response body: " + loo_SbResponseBody.GetAsString()
    Write-Debug "request header: " + loo_Rest.LastRequestHeader
    destroy loo_JsonToken
    destroy loo_GAuth
    destroy loo_Rest
    destroy loo_SbPath
    destroy loo_SbResponseBody
    destroy loo_Xml
    return
end if

//  The response body for a successful DELETE is empty.
Write-Debug "Response Body: (should be empty)"
Write-Debug loo_SbResponseBody.GetAsString()
Write-Debug "Success."


destroy loo_JsonToken
destroy loo_GAuth
destroy loo_Rest
destroy loo_SbPath
destroy loo_SbResponseBody
destroy loo_Xml