Rust

Google Contacts - Delete a Contact

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Demonstrates how to delete a Google Contact. Rust

// 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

let json_token = chilkat::JsonObject::new();
if json_token.load_file("qa_data/tokens/googleContacts.json").is_err() {
    println!("Failed to load googleContacts.json");
    return;
}

let g_auth = chilkat::AuthGoogle::new();
g_auth.set_access_token(&json_token.string_of("access_token").unwrap_or_default());

let rest = chilkat::Rest::new();

// Connect using TLS.
let b_auto_reconnect = true;
let _ = rest.connect("www.google.com", 443, true, b_auto_reconnect).is_ok();

// Provide the authentication credentials (i.e. the access token)
let _ = rest.set_auth_google(&g_auth);

// ----------------------------------------------
// 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

let _ = rest.add_header("GData-Version", "3.0");

let sb_path = chilkat::StringBuilder::new();
let _ = sb_path.append("/m8/feeds/contacts/default/full/{contactId}");
// Get the contact having contactId = "5b6d64980b1ed462"
let num_replacements = sb_path.replace("{contactId}", "5b6d64980b1ed462");

let sb_response_body = chilkat::StringBuilder::new();
if rest.full_request_no_body_sb("GET", &sb_path.get_as_string().unwrap_or_default(), &sb_response_body).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// A successful response will have a status code equal to 200.
if rest.response_status_code() != 200 {
    println!("response status code = {}", rest.response_status_code());
    println!("response status text = {}", rest.response_status_text());
    println!("response header: {}", rest.response_header());
    println!("response body: {}", sb_response_body.get_as_string().unwrap_or_default());
    return;
}

// If the 200 response was received, then the contacts XML is contained
// in the response body.
let xml = chilkat::Xml::new();
let _ = xml.load_sb(&sb_response_body, false);

println!("{}", xml.get_xml().unwrap_or_default());
println!("-------------------");

// Get the etag:
let last_known_etag = xml.get_attr_value("gd:etag").unwrap_or_default();
println!("lastKnownEtag = {}", last_known_etag);
println!("-------------------");

// To delete, send the following:

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

let _ = rest.clear_all_headers();
let _ = rest.add_header("If-Match", &last_known_etag);
let _ = rest.add_header("GData-Version", "3.0");

// The sbPath already contains the correct path..
if rest.full_request_no_body_sb("DELETE", &sb_path.get_as_string().unwrap_or_default(), &sb_response_body).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// A successful response will have a status code equal to 200.
if rest.response_status_code() != 200 {
    println!("response status code = {}", rest.response_status_code());
    println!("response status text = {}", rest.response_status_text());
    println!("response header: {}", rest.response_header());
    println!("response body: {}", sb_response_body.get_as_string().unwrap_or_default());
    println!("request header: {}", rest.last_request_header());
    return;
}

// The response body for a successful DELETE is empty.
println!("Response Body: (should be empty)");
println!("{}", sb_response_body.get_as_string().unwrap_or_default());
println!("Success.");