import { Phase } from "./enums";
import { assert } from "./utils";

export class PlanDayCommand {
  /**
   * Executes the plan day command
   * @param {import(".").GameState} game_state
   * @returns {import(".").GameState}
   */
  execute(game_state) {
    assert(
      game_state.time.phase === Phase.CLOSE,
      "store must be closed before you can plan",
    );

    return {
      ...game_state,
      time: {
        ...game_state.time,
        day: game_state.time.day + 1,
        phase: Phase.PLANNING,
      },
    };
  }
}