(Visual FoxPro) Update a Google Contact

Demonstrates how to update a Google Contact.

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

LOCAL loJsonToken
LOCAL lnSuccess
LOCAL loGAuth
LOCAL loRest
LOCAL lnBAutoReconnect
LOCAL loSbPath
LOCAL lnNumReplacements
LOCAL loSbResponseBody
LOCAL loXml
LOCAL lcLastKnownEtag
LOCAL loSbRequestBody

* 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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJsonToken = CreateObject('Chilkat.JsonObject')
lnSuccess = loJsonToken.LoadFile("qa_data/tokens/googleContacts.json")
IF (lnSuccess <> 1) THEN
    ? "Failed to load googleContacts.json"
    RELEASE loJsonToken
    CANCEL
ENDIF

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.AuthGoogle')
loGAuth = CreateObject('Chilkat.AuthGoogle')
loGAuth.AccessToken = loJsonToken.StringOf("access_token")

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rest')
loRest = CreateObject('Chilkat.Rest')

* Connect using TLS.
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("www.google.com",443,1,lnBAutoReconnect)

* Provide the authentication credentials (i.e. the access token)
loRest.SetAuthGoogle(loGAuth)

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

* To update a contact, we'll first get the contact information,
* then we'll make changes to the XML and then PUT the update.

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

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbPath = CreateObject('Chilkat.StringBuilder')
loSbPath.Append("/m8/feeds/contacts/default/full/{contactId}")
* Get the contact having contactId = "5b6d64980b1ed462"
lnNumReplacements = loSbPath.Replace("{contactId}","5b6d64980b1ed462")

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestNoBodySb("GET",loSbPath.GetAsString(),loSbResponseBody)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loJsonToken
    RELEASE loGAuth
    RELEASE loRest
    RELEASE loSbPath
    RELEASE loSbResponseBody
    CANCEL
ENDIF

* A successful response will have a status code equal to 200.
IF (loRest.ResponseStatusCode <> 200) THEN
    ? "response status code = " + STR(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + loSbResponseBody.GetAsString()
    RELEASE loJsonToken
    RELEASE loGAuth
    RELEASE loRest
    RELEASE loSbPath
    RELEASE loSbResponseBody
    CANCEL
ENDIF

* If the 200 response was received, then the contacts XML is contained
* in the response body.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Xml')
loXml = CreateObject('Chilkat.Xml')
loXml.LoadSb(loSbResponseBody,0)

* Get the etag:
lcLastKnownEtag = loXml.GetAttrValue("gd:etag")
? "lastKnownEtag = " + lcLastKnownEtag

* Update the XML.
* We're going to add or update with the following information:

* 	  <gd:name>
* 	    <gd:givenName>Joe</gd:givenName>
* 	    <gd:familyName>Sample</gd:familyName>
* 	    <gd:fullName>Joe Sample</gd:fullName>
* 	  </gd:name>
* 	  <content type="text">RIP Joe Sample, a great musician...</content>
* 	  <gd:extendedProperty name="pet" value="hamster"/>

loXml.UpdateChildContent("gd:name|gd:givenName","Joe")
loXml.UpdateChildContent("gd:name|gd:familyName","Sample")
loXml.UpdateChildContent("gd:name|gd:fullName","Joe Sample")
loXml.UpdateChildContent("content","RIP Joe Sample, a great musician...")
loXml.UpdateAttrAt("content",1,"type","text")
loXml.UpdateAttrAt("gd:extendedProperty",1,"name","pet")
loXml.UpdateAttrAt("gd:extendedProperty",1,"value","hamster")

* Send the following:

* 	PUT /m8/feeds/contacts/default/full/{contactId}
* 	If-Match: {lastKnownEtag}
* 	GData-Version: 3.0
* 	Content-Type: application/atom+xml

loRest.ClearAllHeaders()
loRest.AddHeader("If-Match",lcLastKnownEtag)
loRest.AddHeader("GData-Version","3.0")
loRest.AddHeader("Content-Type","application/atom+xml")

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbRequestBody = CreateObject('Chilkat.StringBuilder')
loXml.GetXmlSb(loSbRequestBody)

* The sbPath already contains the correct path..
lnSuccess = loRest.FullRequestSb("PUT",loSbPath.GetAsString(),loSbRequestBody,loSbResponseBody)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loJsonToken
    RELEASE loGAuth
    RELEASE loRest
    RELEASE loSbPath
    RELEASE loSbResponseBody
    RELEASE loXml
    RELEASE loSbRequestBody
    CANCEL
ENDIF

* A successful response will have a status code equal to 200.
IF (loRest.ResponseStatusCode <> 200) THEN
    ? "response status code = " + STR(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + loSbResponseBody.GetAsString()
    RELEASE loJsonToken
    RELEASE loGAuth
    RELEASE loRest
    RELEASE loSbPath
    RELEASE loSbResponseBody
    RELEASE loXml
    RELEASE loSbRequestBody
    CANCEL
ENDIF

* If the 200 response was received, then the updated contact XML is contained
* in the response body.
loXml.LoadSb(loSbResponseBody,0)

? "Response Body:"
? loXml.GetXml()
? "Success."

RELEASE loJsonToken
RELEASE loGAuth
RELEASE loRest
RELEASE loSbPath
RELEASE loSbResponseBody
RELEASE loXml
RELEASE loSbRequestBody