import MapState from '../model/state/MapState';
import { TileMap } from './MapLoader';
import Renderer from './renderer/Renderer';
import { TileView, TileViewBuilder } from './tile';

export default class MapView {
	private static addTile(builder: TileViewBuilder, tileMap: TileMap, x: number, y: number, tile: string) {
		if (tile === ' ')
			return;

		const tilePos = tileMap.tiles.get(tile);
		if (!tilePos)
			throw new Error('invalid tile specifier in map data');

		builder.addTile([x, y, x + 1, y + 1], tilePos);
	}

	private readonly tileView: TileView;

	constructor(
		r: Renderer,
		map: MapState,
		tileMap: TileMap,
	) {
		const builder = new TileViewBuilder(r, tileMap.texture);

		for (let x = 0; x < map.data.width; x++)
			for (let y = 0; y < map.data.height; y++)
				for (const layer of map.data.layers)
					MapView.addTile(builder, tileMap, x, y, layer[y][x]);

		this.tileView = builder.build();
	}

	public render(): void {
		this.tileView.render();
	}
}