import BinaryStream from '../../../common/binarystream';
import RandomUnit from './randomunit';

/**
 * A random unit table.
 */
export default class RandomUnitTable {
  id: number = 0;
  name: string = '';
  positions: number = 0;
  columnTypes: Int32Array = new Int32Array(0);
  units: RandomUnit[] = [];

  load(stream: BinaryStream) {
    this.id = stream.readInt32();
    this.name = stream.readUntilNull();
    this.positions = stream.readInt32();
    this.columnTypes = stream.readInt32Array(this.positions);

    for (let i = 0, l = stream.readUint32(); i < l; i++) {
      let unit = new RandomUnit();

      unit.load(stream, this.positions);

      this.units[i] = unit;
    }
  }

  save(stream: BinaryStream) {
    stream.writeInt32(this.id);
    stream.write(`${this.name}\0`);
    stream.writeInt32(this.positions);
    stream.writeInt32Array(this.columnTypes);
    stream.writeUint32(this.units.length);

    for (let unit of this.units) {
      unit.save(stream);
    }
  }

  getByteLength() {
    return 13 + this.name.length + this.columnTypes.byteLength + (this.units.length * (4 + 4 * this.positions));
  }
}