ldp 0.0.0

A library to assist with the creation and maintenance of remote RDF data via LDP
Documentation 
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use bytes::Bytes;
use http::Extensions;
use reqwest_middleware::reqwest::header::HeaderValue;
use reqwest_middleware::reqwest::{Request, Response, header};
use reqwest_middleware::{Middleware, Next};

/// HTTP Basic Authentication
pub struct BasicAuthMiddleware {
    username: String,
    password: Option<String>,
}

impl BasicAuthMiddleware {
    pub fn new(username: String, password: Option<String>) -> Self {
        Self { username, password }
    }
    fn basic_auth(&self) -> HeaderValue {
        use base64::prelude::BASE64_STANDARD;
        use base64::write::EncoderWriter;
        use std::io::Write;

        let mut buf = b"Basic ".to_vec();
        {
            let mut encoder = EncoderWriter::new(&mut buf, &BASE64_STANDARD);
            let _ = write!(encoder, "{}:", self.username);
            if let Some(password) = &self.password {
                let _ = write!(encoder, "{password}");
            }
        }
        let mut header = HeaderValue::from_maybe_shared(Bytes::from(buf))
            .expect("base64 is always valid HeaderValue");
        header.set_sensitive(true);
        header
    }
}

#[async_trait::async_trait]
impl Middleware for BasicAuthMiddleware {
    async fn handle(
        &self,
        mut req: Request,
        extensions: &mut Extensions,
        next: Next<'_>,
    ) -> reqwest_middleware::Result<Response> {
        req.headers_mut()
            .insert(header::AUTHORIZATION, self.basic_auth());
        next.run(req, extensions).await
    }
}