import {
	indexOf
} from './ArrayUtil';

export class Map<K, V> {

	constructor(
		private keys: K[] = [],
		private values: V[] = []
	) { }

	set(key: K, value: V): void {
		var index = indexOf(this.keys, key);
		if (index == -1) {
			index = this.keys.push(key) - 1;
		}
		this.values[index] = value;
	}

	get(key: K): V {
		var index = indexOf(this.keys, key);
		return this.values[index];
	}

	remove(key: K): void {
		var index = indexOf(this.keys, key);
		if (index != -1) {
			this.keys.splice(index, 1);
			this.values.splice(index, 1);
		}
	}

	removeAll(): void {
		this.keys = [];
		this.values = [];
	}

	setAll(map: Map<K, V>): void {
		var newKeys = map.getKeys();
		var newValues = map.getValues();
		for (var i = 0, n = newKeys.length; i < n; i++) {
			var newKey = newKeys[i];
			var newValue = newValues[i];
			this.set(newKey, newValue);
		}
	}

	getLength() { return this.keys.length }
	getKeys() { return this.keys }
	getValues() { return this.values }
}

export default Map;