use anyhow::Result;
use reqsign::aws;

#[tokio::main]
async fn main() -> Result<()> {
    // Create a default signer for S3 in us-east-1
    // This will automatically:
    // - Load credentials from environment variables, config files, or IAM roles
    // - Set up the default HTTP client and file reader
    let signer = aws::default_signer("s3", "us-east-1");
    
    // Build your request
    let mut req = http::Request::builder()
        .method("GET")
        .uri("https://s3.amazonaws.com/testbucket")
        .body(())
        .unwrap()
        .into_parts()
        .0;
    
    // Sign the request
    signer.sign(&mut req, None).await?;
    
    // Send the request with your preferred HTTP client
    println!("Request has been signed!");
    Ok(())
}

use anyhow::Result;
use reqsign::{Context, Signer};
use reqsign_aws_v4::{DefaultCredentialProvider, RequestSigner};
use reqsign_file_read_tokio::TokioFileRead;
use reqsign_http_send_reqwest::ReqwestHttpSend;

#[tokio::main]
async fn main() -> Result<()> {
    // Build your own context with specific implementations
    let ctx = Context::new()
        .with_file_read(TokioFileRead)
        .with_http_send(ReqwestHttpSend::default())
        .with_env(reqsign::OsEnv);
    
    // Configure credential provider
    let credential_provider = DefaultCredentialProvider::new();
    
    // Configure request signer for S3
    let request_signer = RequestSigner::new("s3", "us-east-1");
    
    // Assemble the signer
    let signer = Signer::new(ctx, credential_provider, request_signer);
    
    // Build and sign the request
    let mut req = http::Request::builder()
        .method("GET")
        .uri("https://s3.amazonaws.com/testbucket")
        .body(())
        .unwrap()
        .into_parts()
        .0;
    
    // Sign the request
    signer.sign(&mut req, None).await?;
    
    println!("Request has been signed!");
    Ok(())
}

use reqsign::aws;
use reqsign_aws_v4::StaticCredentialProvider;

// Start with default signer and customize specific components
let signer = aws::default_signer("s3", "us-east-1")
    .with_credential_provider(StaticCredentialProvider::new(
        "my-access-key",
        "my-secret-key",
        None,  // Optional session token
    ));

use reqsign::azure;

// Default signer for Azure Storage
let signer = azure::default_signer();

// With custom credentials
use reqsign_azure_storage::StaticCredentialProvider;
let signer = azure::default_signer()
    .with_credential_provider(StaticCredentialProvider::new(
        "account-name",
        "account-key",
    ));

use reqsign::google;

// Default signer for Google Cloud Storage
let signer = google::default_signer("storage.googleapis.com");

use reqsign::aliyun;

// Default signer for Aliyun OSS
let signer = aliyun::default_signer();