(Ruby) Google Contacts - Delete a Contact

Demonstrates how to delete a Google Contact.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# 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

jsonToken = Chilkat::CkJsonObject.new()
success = jsonToken.LoadFile("qa_data/tokens/googleContacts.json")
if (success != true)
    print "Failed to load googleContacts.json" + "\n";
    exit
end

gAuth = Chilkat::CkAuthGoogle.new()
gAuth.put_AccessToken(jsonToken.stringOf("access_token"))

rest = Chilkat::CkRest.new()

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

# Provide the authentication credentials (i.e. the access token)
rest.SetAuthGoogle(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

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

sbPath = Chilkat::CkStringBuilder.new()
sbPath.Append("/m8/feeds/contacts/default/full/{contactId}")
# Get the contact having contactId = "5b6d64980b1ed462"
numReplacements = sbPath.Replace("{contactId}","5b6d64980b1ed462")

sbResponseBody = Chilkat::CkStringBuilder.new()
success = rest.FullRequestNoBodySb("GET",sbPath.getAsString(),sbResponseBody)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

# A successful response will have a status code equal to 200.
if (rest.get_ResponseStatusCode() != 200)
    print "response status code = " + rest.get_ResponseStatusCode().to_s() + "\n";
    print "response status text = " + rest.responseStatusText() + "\n";
    print "response header: " + rest.responseHeader() + "\n";
    print "response body: " + sbResponseBody.getAsString() + "\n";
    exit
end

# If the 200 response was received, then the contacts XML is contained
# in the response body.
xml = Chilkat::CkXml.new()
xml.LoadSb(sbResponseBody,false)

print xml.getXml() + "\n";
print "-------------------" + "\n";

# Get the etag:
lastKnownEtag = xml.getAttrValue("gd:etag")
print "lastKnownEtag = " + lastKnownEtag + "\n";
print "-------------------" + "\n";

# To delete, send the following:

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

rest.ClearAllHeaders()
rest.AddHeader("If-Match",lastKnownEtag)
rest.AddHeader("GData-Version","3.0")

# The sbPath already contains the correct path..
success = rest.FullRequestNoBodySb("DELETE",sbPath.getAsString(),sbResponseBody)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

# A successful response will have a status code equal to 200.
if (rest.get_ResponseStatusCode() != 200)
    print "response status code = " + rest.get_ResponseStatusCode().to_s() + "\n";
    print "response status text = " + rest.responseStatusText() + "\n";
    print "response header: " + rest.responseHeader() + "\n";
    print "response body: " + sbResponseBody.getAsString() + "\n";
    print "request header: " + rest.lastRequestHeader() + "\n";
    exit
end

# The response body for a successful DELETE is empty.
print "Response Body: (should be empty)" + "\n";
print sbResponseBody.getAsString() + "\n";
print "Success." + "\n";