module.exports = {
	instance: null,
	ent: null,
	tiles: [],
	oldTiles: {},

	load: function (instance, objToAdd, callback) {
		this.instance = instance;

		this.ent = instance.mapName + '-' + objToAdd.components.find(c => c.type === 'auth').username;

		io.get({
			ent: this.ent,
			field: 'customMap',
			callback: this.onLoad.bind(this, callback)
		});
	},

	onLoad: function (callback, result) {
		this.tiles = JSON.parse(result || '[]');
		this.build(callback);
	},

	save: async function () {
		await io.setAsync({
			key: this.ent,
			table: 'customMap',
			value: this.tiles,
			serialize: true
		});
	},

	build: function (callback) {
		this.tiles.forEach(function (t) {
			t = t.split('|');
			this.customize(t[0], t[1], t[2], true);
		}, this);

		this.save();

		callback();
	},

	customize: function (x, y, tile, noStore) {
		let action = null;
		if (arguments.length === 1) {
			action = x;
			let obj = action.obj;
			tile = action.tile;
			x = obj.x;
			y = obj.y;

			if (action.destroy) {
				x += action.direction.x;
				y += action.direction.y;
			}
		}

		let collide = true;

		if (!noStore) {
			let exists = this.tiles.find(function (t) {
				t = t.split('|');
				if ((t[0] === x) && (t[1] === y))
					return true;
			});
			if (exists) {
				tile = this.oldTiles[x + '|' + y];
				collide = false;

				this.tiles.spliceWhere(t => t === exists);
			} else if (this.instance.map.clientMap.collisionMap[x][y]) {
				//Can't build on natural collisions
				return;
			} else
				this.tiles.push(x + '|' + y + '|' + tile);
		}

		if ((collide) && (!this.oldTiles[x + '|' + y])) {
			let oldTile = this.instance.map.clientMap.map[x][y];
			this.oldTiles[x + '|' + y] = oldTile - 1;
		}				

		this.instance.map.clientMap.map[x][y] = tile;

		this.instance.map.clientMap.collisionMap[x][y] = collide;
		this.instance.physics.graph.grid[x][y] = !collide;

		if (!noStore)
			this.save();

		if (action) {
			action.result = {
				x: x,
				y: y,
				tile: tile,
				collide: collide
			};
		}
	},

	placeTile: function (obj) {
		this.customize(obj.x, obj.y, 52);
	}
};