musicbrainz-light 0.1.3

A lightweight MusicBrainz database importer and processor
Documentation 
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use futures_util::future::join_all;
use indicatif::{MultiProgress, ProgressBar, ProgressStyle};
use octocrab::Octocrab;
use std::fs;
use tempfile::env::temp_dir;

pub async fn download_musicbrainz_sql() -> Result<PathBuf> {
    let octocrab = Octocrab::builder().build()?;
    let client = reqwest::Client::new();
    let owner = "metabrainz";
    let repo = "musicbrainz-server";
    let path = "admin/sql";
    let local_dir = temp_dir();
    let local_dir = local_dir.join("musicbrainz-sql");
    let mp = MultiProgress::new();
    download_dir(
        client,
        octocrab,
        owner.into(),
        repo.into(),
        path.into(),
        local_dir.clone(),
        mp.clone(),
    )
    .await?;

    mp.clear()?;
    Ok(local_dir)
}

use std::path::PathBuf;

async fn download_dir(
    client: reqwest::Client,
    octocrab: Octocrab,
    owner: String,
    repo: String,
    path: String,
    local_path: PathBuf,
    mp: MultiProgress,
) -> Result<()> {
    fs::create_dir_all(&local_path)?;

    let contents = octocrab
        .repos(&owner, &repo)
        .get_content()
        .path(path)
        .send()
        .await?
        .items;

    let len = contents.len() as u64;
    let pb = mp.add(ProgressBar::new(len));
    pb.set_style(
        ProgressStyle::default_bar()
            .template("{msg} [{bar:40.green/white}] {pos}/{len}")
            .unwrap()
            .progress_chars("##-"),
    );
    pb.set_message(format!(
        "Dir {}",
        local_path.file_name().unwrap_or_default().to_string_lossy()
    ));

    let mut files = vec![];
    for item in contents {
        let item_path = local_path.join(&item.name);
        let client = client.clone();
        let mp = mp.clone();
        let pb = pb.clone();

        match item.r#type.as_str() {
            "dir" => {
                let octocrab = octocrab.clone();
                let owner = owner.clone();
                let repo = repo.clone();
                let path = item.path.clone();
                let local_path = item_path.clone();

                Box::pin(download_dir(
                    client, octocrab, owner, repo, path, local_path, mp,
                ))
                .await?;
                pb.inc(1);
            }
            "file" => {
                if let Some(download_url) = item.download_url {
                    let fut = async move {
                        let file_path = item_path.clone();
                        let bytes = client.get(&download_url).send().await?.bytes().await?;
                        tokio::fs::write(&file_path, &bytes).await?;
                        pb.inc(1);
                        anyhow::Ok(())
                    };

                    files.push(fut);
                } else {
                    pb.inc(1);
                }
            }
            _ => {}
        }
    }

    let results = join_all(files).await;
    for r in results {
        if let Err(e) = r {
            eprintln!("Error: {}", e);
        }
    }
    pb.finish_with_message("Download complete");

    Ok(())
}