use std::collections::HashMap;
use std::net::SocketAddr;
use std::sync::Arc;
use rapier2d_f64::na::Vector2;
use rapier2d_f64::prelude::{IntegrationParameters, PhysicsPipeline, IslandManager, BroadPhase, NarrowPhase, ImpulseJointSet, MultibodyJointSet, CCDSolver, RigidBodySet, ColliderSet, RigidBodyHandle};
use async_std::sync::RwLock;
use async_std::channel::Sender;

#[derive(Clone)]
pub struct ClientManager {
    pub handlers: Arc<RwLock<HashMap<SocketAddr, ClientHandler>>>,
    pub usernames: Arc<RwLock<HashMap<SocketAddr, String>>>,
}

#[derive(Clone)]
pub struct Player {
    pub handle: RigidBodyHandle,
    pub input: PlayerInput,
    pub addr: SocketAddr,
}

#[derive(Default, Clone)]
pub struct PlayerInput {
    pub up: bool,
    pub left: bool,
    pub right: bool,
    pub down: bool
}

#[derive(Clone)]
pub struct ClientHandler {
    pub tx: Sender<ClientHandlerMessage>
}

#[derive(Clone, Default)]
pub struct PhysicsData {
    pub gravity: Vector2<f64>,
    pub integration_parameters: IntegrationParameters,
    pub island_manager: IslandManager, pub broad_phase: BroadPhase,
    pub narrow_phase: NarrowPhase,
    pub rigid_body_set: RigidBodySet,
    pub collider_set: ColliderSet,
    pub impulse_joint_set: ImpulseJointSet,
    pub multibody_joint_set: MultibodyJointSet,
    pub ccd_solver: CCDSolver,
}
impl PhysicsData {
    pub fn tick(&mut self, pipeline: &mut PhysicsPipeline) {
        pipeline.step(&self.gravity,
                           &self.integration_parameters,
                           &mut self.island_manager,
                           &mut self.broad_phase,
                           &mut self.narrow_phase,
                           &mut self.rigid_body_set,
                           &mut self.collider_set,
                           &mut self.impulse_joint_set,
                           &mut self.multibody_joint_set,
                           &mut self.ccd_solver,
                           None,
                           &(),
                           &()
                        );
    }
}

#[derive(Debug, Clone)]
pub enum ClientHandlerMessage {
    Tick,
    ChatMessage { from: String, message: String },
    PlayersUpdate { players: Vec<starkingdoms_protocol::player::Player> },
    PlanetData { planets: Vec<starkingdoms_protocol::planet::Planet> },
}