//! A demo to show/test the different capabilities of the camera

use bevy::prelude::*;
use bevy_camera_extras::*;
use bevy_ui_extras::{visualize_components_for, visualize_resource, UiExtrasDebug, UiExtrasKeybinds};

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_plugins(UiExtrasDebug {
            keybinds_override: Some(UiExtrasKeybinds {
                toggle_debug_menu: KeyCode::BracketLeft,
                ..default()
            }),
            open_on_start: false,
            ..default()
        })
        .add_plugins(CameraExtrasPlugin {
            cursor_grabbed_by_default: true,
            keybinds_override: None,
            movement_settings_override: None,
        })
        //.add_plugins(WorldInspectorPlugin::default())
        .add_systems(
            Update,
            visualize_components_for::<CameraMode>(bevy_ui_extras::Display::Side(
                bevy_ui_extras::Side::Right,
            )),
        )
        .add_systems(
            Update,
            visualize_resource::<CamKeybinds>(bevy_ui_extras::Display::Window),
        )
        .add_systems(PostStartup, setup)
        .run();
}
/// set up a simple 3D scene
fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) {
    // plane
    commands.spawn(
        (
            Mesh3d(meshes.add(Plane3d::new(
                Vec3::new(0.0, 1.0, 0.0),
                Vec2::new(10.0, 10.0),        
            ))),
            MeshMaterial3d(materials.add(Color::srgb(0.3, 0.5, 0.3)))
        )
    );

    // player
    let cube = commands.spawn(
        (
            Mesh3d(meshes.add(Cuboid::new(1.0, 1.0, 1.0))),
            MeshMaterial3d(materials.add(Color::srgb(0.8, 0.7, 0.6))),
            Transform::from_xyz(0.0, 0.5, 0.0),
            Name::new("player"),
        )
    ).id();
    
    // light   
    commands.spawn(
        (
            PointLight {
                intensity: 1500.0,
                shadows_enabled: true,
                ..default()
            },
            Transform::from_xyz(0.0, 1.5, 0.0),
        )
    );
    // camera
    let cam = commands.spawn(
        (
            Camera3d::default(),
            Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
            CameraController {
                camera_mode: CameraMode::POV(POVCam {
                    target: cube,
                    pov: POV::FirstPerson,
                    settings: POVCamSettings::default(),
                }),
                restrained: CameraRestrained(true),
            },
        )
    ).id();
    commands.entity(cube).insert(ObservedBy(cam));
}