use crate::client::network::*;
use crate::protocol::*;
use crate::shared::*;
use bevy::input::mouse::MouseButton;
use bevy::prelude::*;
use bevy::sprite::{MaterialMesh2dBundle, Mesh2dHandle};
use lightyear::client::input::InputSystemSet;
use lightyear::prelude::*;

mod network;

pub fn main(transport: TransportConfig) {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_plugins(ClientPlugin { transport })
        .run();
}

struct ClientPlugin {
    pub transport: TransportConfig,
}

impl Plugin for ClientPlugin {
    fn build(&self, app: &mut App) {
        app.add_plugins(NetworkPlugin {
            transport: self.transport.clone(),
        })
        .add_systems(Startup, setup)
        .add_systems(Update, spawn_players)
        .add_systems(Update, move_players)
        .add_systems(
            FixedPreUpdate,
            buffer_input.in_set(InputSystemSet::BufferInputs),
        );
    }
}

fn setup(mut client: ClientMut, mut commands: Commands) {
    commands.spawn(Camera2dBundle::default());
    client.connect().unwrap();
}

fn spawn_players(
    mut commands: Commands,
    mut materials: ResMut<Assets<ColorMaterial>>,
    mut meshes: ResMut<Assets<Mesh>>,
    players: Query<(Entity, &PlayerPosition, &PlayerColor), Added<PlayerId>>,
) {
    for (entity, position, color) in players.iter() {
        commands.entity(entity).insert(MaterialMesh2dBundle {
            mesh: Mesh2dHandle(meshes.add(Circle { radius: 10. })),
            material: materials.add(color.0),
            transform: Transform::from_xyz(position.0.x, position.0.y, 0.),
            ..Default::default()
        });
    }
}

fn move_players(mut players: Query<(&mut Transform, &PlayerPosition), Changed<PlayerPosition>>) {
    for (mut transform, player_position) in players.iter_mut() {
        transform.translation = Vec3::new(player_position.0.x, player_position.0.y, 0.);
    }
}

fn buffer_input(
    cameras: Query<(&Camera, &GlobalTransform)>,
    mouse_input: Res<ButtonInput<MouseButton>>,
    mut client: ClientMut,
    windows: Query<&Window>,
) {
    let window = windows.single();
    let (camera, camera_transform) = cameras.single();
    if mouse_input.just_pressed(MouseButton::Left) {
        if let Some(cursor_position) = window.cursor_position() {
            if let Some(world_position) =
                camera.viewport_to_world_2d(camera_transform, cursor_position)
            {
                client.add_input(Inputs::Teleport(world_position));
            }
        }
    }
}