use nigig_traffic::game_frame::RenderMode;
use nigig_traffic::traffic::TrafficWorld;

#[test]
fn traffic_world_loads_and_ticks() {
    let mut world = TrafficWorld::new();
    world.load_scenario(0);
    let scenario = world.scenario().expect("scenario loaded").clone();
    assert!(!scenario.title.is_empty());
    // Tick a few frames with no input – should stay in Intro then Driving
    let input = makepad_game_blocks::DriveInput::default();
    for _ in 0..70 {
        world.tick(&input);
    }
    assert!(world.run.tick >= 70);
    // Intro books exactly 60 ticks, then the run goes live.
    assert_eq!(world.run.phase, nigig_traffic::traffic::Phase::Driving);
}

#[test]
fn traffic_world_navigates_scenarios() {
    let mut world = TrafficWorld::new();
    world.load_scenario(0);
    let first = world.scenario().expect("scenario loaded").id;
    world.next();
    let second = world.scenario().expect("scenario loaded").id;
    assert_ne!(first, second);
    world.prev();
    assert_eq!(world.scenario().expect("scenario loaded").id, first);
}

#[test]
fn render_mode_labels_are_stable() {
    assert_eq!(RenderMode::TopDown.label(), "Top-Down");
    assert_eq!(RenderMode::Chase25D.label(), "Chase-Cam (2.5D)");
    assert_eq!(RenderMode::Full3D.label(), "Full 3D");
}

#[test]
fn traffic_world_builds_first_scenarios_without_panic() {
    // Headless smoke: every scenario must build road geometry and survive a
    // tick (no panics in `build_world_for`, id ordering, or `evaluate`
    // with no scenario edge cases). The actual GPU frame
    // (`window_0_frame_000000.png`) is only written by a real
    // `MAKEPAD=headless` binary run, not by this test.
    let all = TrafficWorld::all_scenarios();
    assert!(all.len() >= 36);
    for s in all.iter().take(5) {
        let mut world = TrafficWorld::new();
        let idx = all.iter().position(|x| x.id == s.id).unwrap();
        world.load_scenario(idx);
        // One tick to ensure no panic in road building (oriented slab + large ground)
        world.tick(&makepad_game_blocks::DriveInput::default());
    }
}