//! Tests for the heartbeat tick. Do not edit.

mod support;

use bxcore::{SessionId, Timestamp};
use loopd::channel::Context;
use loopd::llama::Client;
use loopd::memory::NoMemory;
use loopd::scheduler::{Scheduler, TickWork};
use loopd::tools::Registry;
use std::sync::Arc;
use support::{FakeServer, Home, Reply, ScriptedPort};

const CHAT: &str = "/v1/chat/completions";
const PROMPT: &str = "Look around.\n";

fn sse() -> Reply {
    let data1 = r#"data: {"choices":[{"finish_reason":null,"index":0,"delta":{"content":"noted"}}],"id":"h","timings":{"cache_n":0,"prompt_n":10,"predicted_n":1}}"#;
    let data2 = r#"data: {"choices":[{"finish_reason":"stop","index":0,"delta":{}}],"id":"h","timings":{"cache_n":0,"prompt_n":10,"predicted_n":1}}"#;
    let body = format!("{data1}\n\n{data2}\n\ndata: [DONE]\n\n");
    Reply::raw(format!(
        "HTTP/1.1 200 OK\r\nContent-Type: text/event-stream\r\nContent-Length: {}\r\nConnection: close\r\n\r\n{body}",
        body.len()
    ))
}

fn ts(s: &str) -> Timestamp {
    Timestamp::parse(s).unwrap()
}

fn world(every_s: u64) -> (Home, FakeServer, Arc<Context>) {
    let home = Home::new();
    home.write("heartbeat.md", PROMPT);
    home.write("compact.md", "Summarise.\n");
    let server = FakeServer::start();
    let mut cfg = home.config(&server.socket);
    cfg.heartbeat.every_s = every_s;
    cfg.heartbeat.prompt = home.dir.join("heartbeat.md");
    server.route(CHAT, vec![sse()]);
    let ctx = Arc::new(Context::new(
        cfg.clone(),
        Client::new(cfg),
        Box::new(ScriptedPort::new(vec![])),
        Registry::m2b(),
        Box::new(NoMemory),
    ));
    (home, server, ctx)
}

#[test]
fn every_s_zero_does_nothing() {
    let (_home, server, ctx) = world(0);
    let mut sched = Scheduler::new(ts("2026-10-03T07:00:00.000Z"));
    let work = sched.tick(&ctx, ts("2026-10-03T08:00:00.000Z"));
    assert!(work.is_empty());
    assert!(server.requests_to(CHAT).is_empty());
}

#[test]
fn a_due_heartbeat_runs_on_the_background_slot_with_a_time_line() {
    let (home, server, ctx) = world(60);
    let mut sched = Scheduler::new(ts("2026-10-03T07:00:00.000Z"));
    let work = sched.tick(&ctx, ts("2026-10-03T07:01:00.000Z"));
    assert_eq!(work, vec![TickWork::Heartbeat]);
    let sent = server.requests_to(CHAT);
    assert_eq!(sent.len(), 1);
    assert_eq!(sent[0].json()["id_slot"], 1);
    let body = sent[0].json();
    let last = body["messages"].as_array().unwrap().last().unwrap();
    assert_eq!(last["role"], "user");
    let content = last["content"].as_str().unwrap();
    assert!(
        content.starts_with("It is 2026-10-03T07:01:00.000Z."),
        "{content}"
    );
    assert!(content.contains("Look around."), "{content}");
    let s = loopd::session::Session::open(&home.dir, SessionId::new("heartbeat").unwrap()).unwrap();
    assert_eq!(s.slot(), 1);
}

#[test]
fn a_second_tick_before_every_s_does_not_run() {
    let (_home, server, ctx) = world(60);
    let mut sched = Scheduler::new(ts("2026-10-03T07:00:00.000Z"));
    sched.tick(&ctx, ts("2026-10-03T07:01:00.000Z"));
    let work = sched.tick(&ctx, ts("2026-10-03T07:01:30.000Z"));
    assert!(work.is_empty());
    assert_eq!(server.requests_to(CHAT).len(), 1);
}

#[test]
fn a_busy_heartbeat_session_is_skipped() {
    let (_home, server, ctx) = world(60);
    let held = ctx
        .hold(SessionId::new("heartbeat").unwrap())
        .expect("hold");
    let mut sched = Scheduler::new(ts("2026-10-03T07:00:00.000Z"));
    let work = sched.tick(&ctx, ts("2026-10-03T07:01:00.000Z"));
    assert_eq!(
        work,
        vec![TickWork::SkippedBusy {
            session: SessionId::new("heartbeat").unwrap()
        }]
    );
    assert!(server.requests_to(CHAT).is_empty());
    drop(held);
}

#[test]
fn an_unreadable_prompt_is_skipped_and_names_the_runbook() {
    let home = Home::new();
    let path = home.dir.join("heartbeat.md");
    std::fs::create_dir(&path).unwrap();
    let server = FakeServer::start();
    let mut cfg = home.config(&server.socket);
    cfg.heartbeat.every_s = 60;
    cfg.heartbeat.prompt = path;
    let ctx = Arc::new(Context::new(
        cfg.clone(),
        Client::new(cfg),
        Box::new(ScriptedPort::new(vec![])),
        Registry::m2b(),
        Box::new(NoMemory),
    ));
    let mut sched = Scheduler::new(ts("2026-10-03T07:00:00.000Z"));
    let work = sched.tick(&ctx, ts("2026-10-03T07:01:00.000Z"));
    assert_eq!(work, vec![TickWork::HeartbeatUnreadable]);
    assert!(server.requests_to(CHAT).is_empty());
}

#[test]
fn heartbeat_has_no_speaker() {
    let (home, _server, ctx) = world(60);
    let mut sched = Scheduler::new(ts("2026-10-03T07:00:00.000Z"));
    sched.tick(&ctx, ts("2026-10-03T07:01:00.000Z"));
    let recs = home.records("heartbeat");
    let user = recs
        .iter()
        .find_map(|r| match r {
            bxcore::LogRecord::User { speaker, .. } => Some(speaker),
            _ => None,
        })
        .unwrap();
    assert_eq!(user, &None);
}