import { UnitDeadEvent } from "../events";
import { Unit } from "./unit";

export class Group {
  #members: Unit[] = [];
  #name: string;

  constructor(name: string) {
    this.#name = name;

    UnitDeadEvent.on((unit) => {
      if (this.#members.includes(unit)) this.getLeader()?.onGroupChanged(unit);
    });
  }

  getName() {
    return this.#name;
  }

  addMember(member: Unit) {
    if (!this.#members.includes(member)) {
      this.#members.push(member);
      member.setGroup(this);

      this.getLeader()?.onGroupChanged(member);
    }
  }

  removeMember(member: Unit) {
    if (this.#members.includes(member)) {
      delete this.#members[this.#members.indexOf(member)];
      member.setGroup(null);

      this.getLeader()?.onGroupChanged(member);
    }
  }

  getMembers() {
    return this.#members;
  }

  getLeader() {
    return this.#members.find((unit: Unit) => {
      return unit.getIsLeader() && unit.getAlive();
    });
  }
}