use std::error::Error;

use futures_executor::block_on;

fn main() -> Result<(), Box<dyn Error>> {
    let handle = block_on(
        clusterflux::spawn::task_with_arg(41_i32, |_| -> i32 {
            panic!("product-mode spawn invoked its local Rust closure")
        })
        .task_id("task_add_one")
        .name("SDK product Wasmtime task")
        .env(clusterflux::env!("linux"))
        .start(),
    )?;
    let task_spec = handle
        .task_spec()
        .cloned()
        .ok_or("CLUSTERFLUX_SDK_COORDINATOR did not enable product runtime")?;
    let virtual_thread_id = handle.virtual_thread_id();
    let result = block_on(handle.join())?;

    println!(
        "{}",
        serde_json::to_string(&serde_json::json!({
            "kind": "clusterflux-sdk-product-runtime",
            "virtual_thread_id": virtual_thread_id,
            "task_spec": task_spec,
            "remote_result": result,
            "local_function_invoked_by_spawn": false,
        }))?
    );
    Ok(())
}