This fork is a rewrite to use Google's HTTP v1 API.

Add the following to your Cargo.toml file:

[dependencies]
fcm = { git = "https://github.com/rj76/fcm-rust.git" }

Optionally, add the credentials described in the Credentials to a .env file at the root of your project.

For a complete usage example, you may check the Examples section.

use fcm;

let client = fcm::FcmClient::builder()
    // Comment to use GOOGLE_APPLICATION_CREDENTIALS environment
    // variable. The variable can also be defined in .env file.
    .service_account_key_json_path("service_account_key.json")
    .build()
    .await
    .unwrap();

use fcm::message::{Message, Notification, Target};

// Replace "device_token" with the actual device token
let device_token = "device_token".to_string();
let message = Message {
    data: Some(json!({
       "message": "Howdy!",
    })),
    notification: Some(Notification {
        title: Some("Hello".to_string()),
        body: Some(format!("it's {}", chrono::Utc::now())),
        image: None,
    }),
    target: Target::Token(device_token),
    android: None,
    webpush: None,
    apns: None,
    fcm_options: None,
};

let response = client.send(message).await.unwrap();

If client is not configured with service account key JSON file path then this library expects the Google credentials JSON location to be defined in GOOGLE_APPLICATION_CREDENTIALS environment variable. The variable definition can also be located in the .env file.

Please follow the instructions in the Firebase Documentation to create a service account key JSON file.

For a complete usage example, you may check out the simple_sender example.

The example can be run with

cargo run --example simple_sender -- -t <device_token> -k <service_account_key_path>

If GOOGLE_APPLICATION_CREDENTIALS environment variable is defined in current environment or in .env file, then the example can be run with

cargo run --example simple_sender -- -t <device_token>

To define the environment variable using .env file copy the .env.example file to .env and fill in the required values.