use citygen_server::{
    gateway::{router, App, Config},
    generation::{cache_id, Request},
    protocol::{CityJob, CreateCity},
};
use prost::Message;
use std::time::Duration;
use tokio::io::{AsyncReadExt, AsyncWriteExt};

async fn request(
    address: std::net::SocketAddr,
    method: &str,
    path: &str,
    body: &[u8],
) -> (u16, Vec<u8>) {
    let mut stream = tokio::net::TcpStream::connect(address).await.unwrap();
    stream.write_all(format!("{method} {path} HTTP/1.1\r\nHost: localhost\r\nContent-Type: application/x-protobuf\r\nContent-Length: {}\r\nConnection: close\r\n\r\n",body.len()).as_bytes()).await.unwrap();
    stream.write_all(body).await.unwrap();
    let mut bytes = vec![];
    stream.read_to_end(&mut bytes).await.unwrap();
    let split = bytes.windows(4).position(|b| b == b"\r\n\r\n").unwrap();
    let status = std::str::from_utf8(&bytes[..split])
        .unwrap()
        .split_whitespace()
        .nth(1)
        .unwrap()
        .parse()
        .unwrap();
    (status, bytes[split + 4..].to_vec())
}
#[tokio::test]
async fn isolated_typescript_worker_exports_city_and_opens_room_without_network() {
    let dir = tempfile::tempdir().unwrap();
    let fixture = dir.path().join("osm.json");
    std::fs::write(&fixture,r#"{"elements":[{"type":"way","id":1,"tags":{"highway":"residential"},"geometry":[{"lat":47.001,"lon":9.0},{"lat":47.001,"lon":9.004}]},{"type":"way","id":2,"tags":{"building":"house","building:levels":"1"},"geometry":[{"lat":47.0011,"lon":9.001},{"lat":47.0011,"lon":9.0012},{"lat":47.0013,"lon":9.0012},{"lat":47.0013,"lon":9.001},{"lat":47.0011,"lon":9.001}]},{"type":"way","id":3,"tags":{"building":"industrial","building:levels":"1"},"geometry":[{"lat":47.0006,"lon":9.002},{"lat":47.0006,"lon":9.0023},{"lat":47.0009,"lon":9.0023},{"lat":47.0009,"lon":9.002},{"lat":47.0006,"lon":9.002}]}]}"#).unwrap();
    let app = App::new(Config {
        cities: dir.path().join("cities"),
        saves: dir.path().join("rooms"),
        osm_fixture: Some(fixture),
        project_root: std::path::Path::new(env!("CARGO_MANIFEST_DIR"))
            .parent()
            .unwrap()
            .to_owned(),
        ..Default::default()
    })
    .unwrap();
    let listener = tokio::net::TcpListener::bind("127.0.0.1:0").await.unwrap();
    let address = listener.local_addr().unwrap();
    let serve_app = app.clone();
    let server = tokio::spawn(async move {
        axum::serve(
            listener,
            router(serve_app).into_make_service_with_connect_info::<std::net::SocketAddr>(),
        )
        .await
        .unwrap();
    });
    let bbox = [47., 9., 47.002, 9.004];
    let message = CreateCity {
        bbox: bbox.to_vec(),
        name: "Test town".into(),
        seed: 1,
    };
    let (status, body) = request(
        address,
        "POST",
        "/api/cities/jobs",
        &message.encode_to_vec(),
    )
    .await;
    assert_eq!(status, 200, "{}", String::from_utf8_lossy(&body));
    let job = CityJob::decode(&body[..]).unwrap();
    assert_eq!(job.city_id, cache_id(bbox, 1));
    let ready = tokio::time::timeout(Duration::from_secs(30), async {
        loop {
            let (status, body) =
                request(address, "GET", &format!("/api/cities/jobs/{}", job.id), &[]).await;
            assert_eq!(status, 200);
            let state = CityJob::decode(&body[..]).unwrap();
            assert_ne!(state.status, "failed", "{}", state.error);
            if state.status == "ready" {
                break state;
            }
            tokio::time::sleep(Duration::from_millis(25)).await;
        }
    })
    .await
    .unwrap();
    assert!(!ready.room_id.is_empty());
    let city = citygen_server::city::City::load(&app.config.cities, &ready.city_id).unwrap();
    assert!(!city.graph.points.is_empty());
    assert!(city.manifest.navigation.is_some());
    let duplicate = app
        .jobs
        .submit(
            app.clone(),
            Request {
                bbox: [47.0000001, 9., 47.002, 9.004],
                name: "Same area".into(),
                seed: 1,
            },
        )
        .unwrap();
    assert_eq!(duplicate.id, job.id);
    let (status, body) = request(
        address,
        "POST",
        "/api/cities/jobs",
        &message.encode_to_vec(),
    )
    .await;
    assert_eq!(status, 200, "repeated POST resumes the accepted job");
    assert_eq!(CityJob::decode(&body[..]).unwrap().id, job.id);
    let different = CreateCity { seed: 2, ..message };
    let (status, body) = request(
        address,
        "POST",
        "/api/cities/jobs",
        &different.encode_to_vec(),
    )
    .await;
    assert_eq!(status, 429);
    let error: serde_json::Value = serde_json::from_slice(&body).unwrap();
    assert!(error["retryAfterSeconds"].as_u64().unwrap() <= 60);
    app.stop();
    server.abort();
    assert_eq!(
        citygen_server::storage::load(&app.config.saves, &ready.room_id)
            .unwrap()
            .city_id,
        ready.city_id
    );
}