lastfm-edit

A Rust crate for programmatic access to Last.fm's scrobble editing functionality via web scraping.

This crate provides a high-level interface for authenticating with Last.fm, browsing user libraries, and performing bulk edits on scrobbled tracks. It uses web scraping to access functionality not available through Last.fm's public API.

Features

Authentication: Login to Last.fm with username/password
Library browsing: Paginated access to tracks, albums, and recent scrobbles
Bulk editing: Edit track names, artist names, and album information
Async iterators: Stream large datasets efficiently
HTTP client abstraction: Works with any HTTP client implementation

Quick Start

use lastfm_edit::{LastFmClient, AsyncPaginatedIterator, Result};

#[tokio::main]
async fn main() -> Result<()> {
    // Create client with any HTTP implementation
    let http_client = http_client::native::NativeClient::new();
    let mut client = LastFmClient::new(Box::new(http_client));

    // Login to Last.fm
    client.login("username", "password").await?;

    // Browse recent tracks
    let mut recent_tracks = client.recent_tracks();
    while let Some(track) = recent_tracks.next().await? {
        println!("{} - {}", track.artist, track.name);
    }

    Ok(())
}

Core Components

[LastFmClient] - Main client for interacting with Last.fm
[Track], [Album] - Data structures for music metadata
[AsyncPaginatedIterator] - Trait for streaming paginated data
[ScrobbleEdit] - Represents track edit operations
[LastFmError] - Error types for the crate

Installation

Add this to your Cargo.toml:

[dependencies]
lastfm-edit = "0.1.0"
http-client = { version = "6.5", features = ["curl_client"] }
tokio = { version = "1.0", features = ["full"] }

Usage Patterns

Basic Library Browsing

use lastfm_edit::{LastFmClient, AsyncPaginatedIterator, Result};

#[tokio::main]
async fn main() -> Result<()> {
    let http_client = http_client::native::NativeClient::new();
    let mut client = LastFmClient::new(Box::new(http_client));

    client.login("username", "password").await?;

    // Get all tracks by an artist
    let mut tracks = client.artist_tracks("Radiohead");
    while let Some(track) = tracks.next().await? {
        println!("{} - {}", track.artist, track.name);
    }

    Ok(())
}

Bulk Track Editing

use lastfm_edit::{LastFmClient, ScrobbleEditContext, EditStrategy, Result};

#[tokio::main]
async fn main() -> Result<()> {
    let http_client = http_client::native::NativeClient::new();
    let mut client = LastFmClient::new(Box::new(http_client));

    client.login("username", "password").await?;

    // Create edit context for bulk operations
    let mut context = ScrobbleEditContext::new(&mut client, EditStrategy::DryRun);

    // Find and edit tracks
    let tracks = client.artist_tracks("Artist Name").collect_all().await?;
    for track in tracks {
        if track.name.contains("(Remaster)") {
            let new_name = track.name.replace(" (Remaster)", "");
            context.edit_track(&track, Some(&new_name), None, None).await?;
        }
    }

    Ok(())
}

Recent Tracks Monitoring

use lastfm_edit::{LastFmClient, AsyncPaginatedIterator, Result};

#[tokio::main]
async fn main() -> Result<()> {
    let http_client = http_client::native::NativeClient::new();
    let mut client = LastFmClient::new(Box::new(http_client));

    client.login("username", "password").await?;

    // Get recent tracks (first 100)
    let recent_tracks = client.recent_tracks().take(100).collect_all().await?;
    println!("Found {} recent tracks", recent_tracks.len());

    Ok(())
}

License

MIT

lastfm-edit 0.2.0