use std::env;

use rusoto_core::Region;
use rusoto_credential::StaticProvider;
use rusoto_core::request::HttpClient;
use rusoto_s3::ListObjectsV2Request;
use rusoto_s3::S3;
use rusoto_s3::S3Client;

fn main() {
    let region_name = env::var("NC_REGION").expect("export NC_REGION with the endpoint region");
    let endpoint = env::var("NC_ENDPOINT").expect("export NC_ENDPOINT with the endpot URL");
    let bucket = env::var("NC_BUCKET").expect("export NC_BUCKET with the bucket to be accessed");
    let access_key = env::var("NC_ACCESS_KEY").expect("export NC_ACCESS_KEY with the access key to the bucket");
    let secret_key = env::var("NC_SECRET_KEY").expect("export NC_SECRET_KEY with the secret key to the bucket");

    println!("Accessing {}::{}",
             region_name,
             endpoint);

    let region = Region::Custom {
        name: region_name.to_owned(),
        endpoint: endpoint.to_owned()
    };

    let client = S3Client::new_with(
        HttpClient::new().expect("Failed to create http client"),
        StaticProvider::new_minimal(access_key, secret_key),
        region
    );

    let list_objects_request = ListObjectsV2Request {
        bucket: bucket.to_owned(),
        ..Default::default()
    };

    let result = client
        .list_objects_v2(list_objects_request)
        .sync()
        .expect("Can't list contents of buckets");
    println!("List result: {:?}", result);
}