//テトリミノの７種類を定義する
#[derive(Debug)]//Debugを継承するとprintln!でプリントできるようになるっぽいです
struct ColorAndShape {
    color: Color,
    shape: Vec<(i8, i8)>,
}

#[derive(Resource, Debug)]
struct TetriminoColorAndShape {
    tetrimino: Vec<ColorAndShape>,
}

fn setup(
    mut commands: Commands
) {
    commands.spawn(Camera2dBundle::default());
    commands.insert_resource(TetriminoColorAndShape {
        tetrimino: vec![
            ColorAndShape {
                color: Color::CYAN,
                shape: vec![(0, 0), (0, -1), (0, 1), (0, 2)],
            },
            ColorAndShape {
                color: Color::BLUE,
                shape: vec![(0, 0), (0, 1), (0, -1), (-1, -1)],
            },
            ColorAndShape {
                color: Color::ORANGE,
                shape: vec![(0, 0), (0, 1), (0, -1), (1, -1)],
            },
            ColorAndShape {
                color: Color::YELLOW,
                shape: vec![(0, 0), (0, 1), (1, 1), (1, 0)],
            },
            ColorAndShape {
                color: Color::LIME_GREEN,
                shape: vec![(0, 0), (0, 1), (1, 1), (-1, 0)],
            },
            ColorAndShape {
                color: Color::PURPLE,
                shape: vec![(0, 0), (0, 1), (1, 0), (-1, 0)],
            },
            ColorAndShape {
                color: Color::CRIMSON,
                shape: vec![(0, 0), (0, 1), (-1, 1), (1, 0)],
            }
        ]
    });
}

//テトリミノの生成
fn spawn_tetrimino(
    mut commands: Commands,
    tetrimino_color_and_shape: Res<TetriminoColorAndShape>,
    //リソースが存在するかどうかを確かめる
    mut fancy: Option<Res<TetriminoColorAndShape>>,
){
    //リソースが存在しなかった場合Errを出力するように（まぁパニックになってウィンドウが閉じるんですけどね）
    if let Some(fancy) = &mut fancy {
    commands.spawn(TetriminoBundle {
        tetrimino: Tetrimino,
        position : Position {
            x: 0,
            y: 0,
        },
        sprite   : SpriteBundle {
            sprite: Sprite {
                color: tetrimino_color_and_shape.tetrimino[1].color.clone(),
                ..default()
            },
            ..default()
        },
    });
    }else {
        println!("Err");
    }
}

fn main() {
    App::new()
        .add_plugins(DefaultPlugins.set(WindowPlugin {
            primary_window: Some(Window {
                title: "Tetrus".into(),
                resolution: (WINDOW_WIDTH as f32, WINDOW_HEIGHT as f32).into(),
                resizable: false,
                ..default()
            }),
            ..default()
        }))
        .add_systems(Startup, (debug, setup))
        .add_systems(Update, (adjust, spawn_tetrimino))
        .run()
}