# Navidrome Host Function Wrappers for Rust

This directory contains auto-generated Rust wrappers for Navidrome's host services.
These wrappers provide idiomatic Rust APIs for interacting with Navidrome from WASM plugins.

## ⚠️ Auto-Generated Code

**Do not edit these files manually.** They are generated by the `ndpgen` tool.

To regenerate:

```bash
make gen
```

## Usage

Add this crate as a dependency in your plugin's `Cargo.toml`:

```toml
[dependencies]
nd-host = { path = "../../pdk/rust/host" }
```

Then import the services you need:

```rust
use nd_host::{cache, scheduler, library};
use nd_host::library::Library; // Import the typed struct

#[plugin_fn]
pub fn my_callback(input: String) -> FnResult<String> {
    // Use the cache service
    cache::set("my_key", b"my_value", 3600)?;

    // Schedule a recurring task  
    scheduler::schedule_recurring("@every 5m", "payload", "task_id")?;

    // Access library data with typed structs
    let libraries: Vec<Library> = library::get_all_libraries()?;
    for lib in &libraries {
        info!("Library: {} with {} songs", lib.name, lib.total_songs);
    }

    Ok("done".to_string())
}
```

## Typed Structs

Services that work with domain objects provide typed Rust structs instead of
`serde_json::Value`. This enables compile-time type checking and IDE
autocompletion.

For example, the `library` module provides a `Library` struct:

```rust
use nd_host::library::Library;

let libs: Vec<Library> = library::get_all_libraries()?;
println!("First library: {} ({} songs)", libs[0].name, libs[0].total_songs);
```

All structs derive `Debug`, `Clone`, `Serialize`, and `Deserialize` for
convenient use with logging and serialization.

## Available Services

| Module        | Description                                        |
|---------------|----------------------------------------------------|
| `artwork`     | Access album and artist artwork                    |
| `cache`       | Temporary key-value storage with TTL               |
| `kvstore`     | Persistent key-value storage                       |
| `library`     | Access the music library (albums, artists, tracks) |
| `scheduler`   | Schedule one-time and recurring tasks              |
| `subsonicapi` | Make Subsonic API calls                            |
| `websocket`   | Send real-time messages to clients                 |

## Building Plugins

Rust plugins must be compiled to WebAssembly:

```bash
cargo build --target wasm32-wasip1 --release
```

See the [webhook-rs](../../examples/webhook-rs/) example for a complete plugin implementation.