OpenFrontIO/src/core/execution/DeleteUnitExecution.ts

import { Execution, Game, MessageType, Player } from "../game/Game";

export class DeleteUnitExecution implements Execution {
  private active = true;
  private mg: Game;

  constructor(
    private player: Player,
    private unitId: number,
  ) {}

  activeDuringSpawnPhase(): boolean {
    return false;
  }

  init(mg: Game, ticks: number) {
    if (!this.active) {
      return;
    }
    this.mg = mg;

    const unit = this.player.units().find((u) => u.id() === this.unitId);
    if (!unit) {
      console.warn(
        `SECURITY: unit ${this.unitId} not found or not owned by player ${this.player.displayName()}`,
      );
      this.active = false;
      return;
    }

    if (!unit.isActive()) {
      console.warn(`SECURITY: unit ${this.unitId} is not active`);
      this.active = false;
      return;
    }

    const tileOwner = mg.owner(unit.tile());
    if (!tileOwner.isPlayer() || tileOwner.id() !== this.player.id()) {
      console.warn(
        `SECURITY: unit ${this.unitId} is not on player's territory`,
      );
      this.active = false;
      return;
    }

    if (!mg.isLand(unit.tile())) {
      console.warn(`SECURITY: unit ${this.unitId} is not on land`);
      this.active = false;
      return;
    }

    if (mg.inSpawnPhase()) {
      console.warn(`SECURITY: cannot delete units during spawn phase`);
      this.active = false;
      return;
    }

    if (!this.player.canDeleteUnit()) {
      console.warn(`SECURITY: delete unit cooldown not expired`);
      this.active = false;
      return;
    }

    unit.delete(false);
    this.player.recordDeleteUnit();

    this.mg.displayMessage(
      `events_display.unit_voluntarily_deleted`,
      MessageType.UNIT_DESTROYED,
      this.player.id(),
    );

    this.active = false;
  }

  tick(ticks: number) {}

  isActive(): boolean {
    return this.active;
  }
}