//! Run the OTLP `/v1/traces` receiver — POST a gen_ai trace, get back a sealed
//! eval/1 receipt with a joule on it.
//!
//! ```text
//! cargo run -p jcp-trace --example serve --features server -- 127.0.0.1:8090 &
//! curl -s localhost:8090/v1/traces -d '{"trace":{"resourceSpans":[{"scopeSpans":[{"spans":[
//!   {"traceId":"a","spanId":"s1","name":"chat","attributes":[
//!     {"key":"gen_ai.operation.name","value":{"stringValue":"chat"}},
//!     {"key":"gen_ai.usage.output_tokens","value":{"intValue":"64"}}]}]}]}]},
//!   "assessments":[{"name":"correctness","source":"llm_judge","value":"pass"}]}'
//! ```

use std::net::TcpListener;

use ed25519_dalek::SigningKey;
use jcp_trace::{server, Gate};

fn main() -> std::io::Result<()> {
    let addr = std::env::args().nth(1).unwrap_or_else(|| "127.0.0.1:8090".to_string());
    let listener = TcpListener::bind(&addr)?;
    eprintln!("jcp-trace OTLP receiver: http://{addr}/v1/traces");

    // Seal under one steward; every posted run is judged against this gate and
    // priced at 12 µJ/token where a span carries no measured reading.
    let sk = SigningKey::from_bytes(&[9u8; 32]);
    let gate = Gate::require_pass(["correctness", "safety"]);
    let mut srv = server::EvalServer::new(sk, "did:example:trace-receiver", gate, 12);

    server::run(&listener, &mut srv)
}