//! Example showing how to use the GCP KMS signer.

use alloy::signers::{

gcp::{GcpKeyRingRef, GcpSigner, KeySpecifier},

Signer,

};

use alloy_chains::NamedChain;

use eyre::Result;

use gcloud_sdk::{

google::cloud::kms::v1::key_management_service_client::KeyManagementServiceClient, GoogleApi,

};

#[tokio::main]

async fn main() -> Result<()> {

let project_id =

std::env::var("GOOGLE_PROJECT_ID").expect("GOOGLE_PROJECT_ID not set in .env file");

let location = std::env::var("GOOGLE_LOCATION").expect("GOOGLE_LOCATION not set in .env file");

let keyring = std::env::var("GOOGLE_KEYRING").expect("GOOGLE_KEYRING not set in .env file");

let key_name = std::env::var("GOOGLE_KEY_NAME").expect("GOOGLE_KEY_NAME not set in .env file");

let keyring = GcpKeyRingRef::new(&project_id, &location, &keyring);

let client = GoogleApi::from_function(

KeyManagementServiceClient::new,

"https://cloudkms.googleapis.com",

None,

)

.await?;

let key_version = 1;

let specifier = KeySpecifier::new(keyring, &key_name, key_version);

let chain = NamedChain::Mainnet;

let signer = GcpSigner::new(client, specifier, Some(chain.into())).await?;

let message = "Hello, world!";

let signature = signer.sign_message(message.as_bytes()).await?;

assert_eq!(signature.recover_address_from_msg(message)?, signer.address());

Ok(())

}