import { mts } from "../../common/mod.ts";
import { log_from, Vec2 } from "../../common/utils.ts";
import { World, WorldEntity } from "../engine.ts";
import { ClientInterface } from "../network.ts";
const log = log_from(import.meta);

export class Session {
	client;
	world;
	player_entity;

	constructor(client: ClientInterface, world: World, player_entity: WorldEntity) {
		this.client = client;
		this.world = world;
		this.player_entity = player_entity;
	}

	async spin() {
		try {
			for await (const input of this.client.inputs.iter()) {
				if (input.kind !== "request_display") log("Received", input);

				if (input.kind === "ping") this.client.outputs.send({ kind: "ping_response", content: input.content });
				if (input.kind === "request_display") this.send_display(input.content.width, input.content.height);
				if (input.kind === "input") this.handle_input(input);
				if (input.kind === "exit") this.world.kill(this.player_entity.identifier);
			}
		} catch (error) {
			console.error("Session loop failed, ", error);
			this.world.kill(this.player_entity.identifier);
		}
	}

	send_display(width: number, height: number) {
		const raw = this.world.render(this.player_entity.position, new Vec2(width, height));
		this.client.outputs.send({ kind: "display", content: { raw } });
	}

	handle_input(input: mts.MsgInput) {
		if (input.content.control === "up") this.world.move_collide(this.player_entity.identifier, new Vec2(0, 1));
		if (input.content.control === "down") this.world.move_collide(this.player_entity.identifier, new Vec2(0, -1));
		if (input.content.control === "left") this.world.move_collide(this.player_entity.identifier, new Vec2(-1, 0));
		if (input.content.control === "right") this.world.move_collide(this.player_entity.identifier, new Vec2(1, 0));
	}
}

export class PlayerComponent {
	entity;

	constructor(entity: WorldEntity) {
		this.entity = entity;
	}

	move(direction: Vec2) {
		return this.entity.world.move_collide(this.entity.identifier, direction);
	}

	render(res: Vec2) {
		return this.entity.world.render(this.entity.position, res);
	}
}