import type { Entity } from '../core/Entity.ts';
import type { Engine } from '../core/Engine.ts';
import { ComponentType } from '../core/Constants.ts';
import type { Skills } from '../components/Skills.ts';

/**
 * Base class for all skills in the game.
 */
export class Skill {
  id: string;
  name: string;
  cooldown: number;
  description: string;

  /**
   * @param id - Unique identifier for the skill
   * @param name - Display name of the skill
   * @param cooldown - Cooldown duration in seconds
   */
  constructor(id: string, name: string, cooldown = 2.0) {
    this.id = id;
    this.name = name;
    this.cooldown = cooldown;
    this.description = '';
  }

  /**
   * Activate the skill's effects.
   * @param _caster - Entity using the skill
   * @param _engine - Game engine
   * @returns Whether skill was successfully activated
   */
  activate(_caster: Entity, _engine: Engine): boolean {
    return false;
  }

  /**
   * Check if the skill can be used by the caster.
   * @param caster - The caster entity
   * @param _engine - Game engine
   * @returns True if the skill is not on cooldown
   */
  canUse(caster: Entity, _engine: Engine): boolean {
    const skills = caster.getComponent<Skills>(ComponentType.SKILLS);
    if (!skills) return false;
    return !skills.isOnCooldown(this.id);
  }
}