(Objective-C) Update a Google Contact

Demonstrates how to update a Google Contact.

Chilkat Objective-C Library Downloads MAC OS X (Cocoa) Libs iOS Libs

#import <CkoJsonObject.h>
#import <CkoAuthGoogle.h>
#import <CkoRest.h>
#import <CkoStringBuilder.h>
#import <CkoXml.h>
#import <NSString.h>

// 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

CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
BOOL success = [jsonToken LoadFile: @"qa_data/tokens/googleContacts.json"];
if (success != YES) {
    NSLog(@"%@",@"Failed to load googleContacts.json");
    return;
}

CkoAuthGoogle *gAuth = [[CkoAuthGoogle alloc] init];
gAuth.AccessToken = [jsonToken StringOf: @"access_token"];

CkoRest *rest = [[CkoRest alloc] init];

// Connect using TLS.
BOOL bAutoReconnect = YES;
success = [rest Connect: @"www.google.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: 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,
// 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

[rest AddHeader: @"GData-Version" value: @"3.0"];

CkoStringBuilder *sbPath = [[CkoStringBuilder alloc] init];
[sbPath Append: @"/m8/feeds/contacts/default/full/{contactId}"];
// Get the contact having contactId = "5b6d64980b1ed462"
int numReplacements = [[sbPath Replace: @"{contactId}" replacement: @"5b6d64980b1ed462"] intValue];

CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
success = [rest FullRequestNoBodySb: @"GET" uriPath: [sbPath GetAsString] sb: sbResponseBody];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// A successful response will have a status code equal to 200.
if ([rest.ResponseStatusCode intValue] != 200) {
    NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
    NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
    NSLog(@"%@%@",@"response body: ",[sbResponseBody GetAsString]);
    return;
}

// If the 200 response was received, then the contacts XML is contained
// in the response body.
CkoXml *xml = [[CkoXml alloc] init];
[xml LoadSb: sbResponseBody autoTrim: NO];

// Get the etag:
NSString *lastKnownEtag = [xml GetAttrValue: @"gd:etag"];
NSLog(@"%@%@",@"lastKnownEtag = ",lastKnownEtag);

// 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"/>

[xml UpdateChildContent: @"gd:name|gd:givenName" value: @"Joe"];
[xml UpdateChildContent: @"gd:name|gd:familyName" value: @"Sample"];
[xml UpdateChildContent: @"gd:name|gd:fullName" value: @"Joe Sample"];
[xml UpdateChildContent: @"content" value: @"RIP Joe Sample, a great musician..."];
[xml UpdateAttrAt: @"content" autoCreate: YES attrName: @"type" attrValue: @"text"];
[xml UpdateAttrAt: @"gd:extendedProperty" autoCreate: YES attrName: @"name" attrValue: @"pet"];
[xml UpdateAttrAt: @"gd:extendedProperty" autoCreate: YES attrName: @"value" attrValue: @"hamster"];

// Send the following:

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

[rest ClearAllHeaders];
[rest AddHeader: @"If-Match" value: lastKnownEtag];
[rest AddHeader: @"GData-Version" value: @"3.0"];
[rest AddHeader: @"Content-Type" value: @"application/atom+xml"];

CkoStringBuilder *sbRequestBody = [[CkoStringBuilder alloc] init];
[xml GetXmlSb: sbRequestBody];

// The sbPath already contains the correct path..
success = [rest FullRequestSb: @"PUT" uriPath: [sbPath GetAsString] requestBody: sbRequestBody responseBody: sbResponseBody];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// A successful response will have a status code equal to 200.
if ([rest.ResponseStatusCode intValue] != 200) {
    NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
    NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
    NSLog(@"%@%@",@"response body: ",[sbResponseBody GetAsString]);
    return;
}

// If the 200 response was received, then the updated contact XML is contained
// in the response body.
[xml LoadSb: sbResponseBody autoTrim: NO];

NSLog(@"%@",@"Response Body:");
NSLog(@"%@",[xml GetXml]);
NSLog(@"%@",@"Success.");