rust-gmail 0.2.1

A simple crate to send emails using the Gmail API
Documentation 
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use crate::common::token::{create_jwt, GoogleAuthRequest, GoogleAuthResponse};
use crate::error::Result;

use crate::{error::GoogleApiError, service_account::ServiceAccount};

pub async fn retrieve_token(
    service_account: &ServiceAccount,
    send_from_email: &str,
) -> Result<String> {
    let jwt = create_jwt(service_account, send_from_email)?;

    let client = reqwest::Client::new();

    // GoogleAuthResponse
    let response_text = client
        .post(&service_account.token_uri)
        .form(&GoogleAuthRequest::new(jwt))
        .send()
        .await?
        .text()
        .await?;

    let response: GoogleAuthResponse = serde_json::from_str(&response_text)
        .map_err(|_| GoogleApiError::TokenRetrivalError(response_text))?;

    Ok(response.access_token)
}