import { Component } from '../core/Component.js';

export class Skills extends Component {
  constructor() {
    super('Skills');
    this.activeSkills = []; // Array of skill IDs
    this.passiveSkills = []; // Array of passive skill IDs
    this.skillCooldowns = new Map(); // skillId -> remaining cooldown time
  }

  /**
     * Add a skill
     */
  addSkill(skillId, isPassive = false) {
    if (isPassive) {
      if (!this.passiveSkills.includes(skillId)) {
        this.passiveSkills.push(skillId);
      }
    } else {
      if (!this.activeSkills.includes(skillId)) {
        this.activeSkills.push(skillId);
      }
    }
  }

  /**
     * Check if entity has a skill
     */
  hasSkill(skillId) {
    return this.activeSkills.includes(skillId) || 
               this.passiveSkills.includes(skillId);
  }

  /**
     * Set skill cooldown
     */
  setCooldown(skillId, duration) {
    this.skillCooldowns.set(skillId, duration);
  }

  /**
     * Update cooldowns
     */
  updateCooldowns(deltaTime) {
    for (const [skillId, cooldown] of this.skillCooldowns.entries()) {
      const newCooldown = cooldown - deltaTime;
      if (newCooldown <= 0) {
        this.skillCooldowns.delete(skillId);
      } else {
        this.skillCooldowns.set(skillId, newCooldown);
      }
    }
  }

  /**
     * Check if skill is on cooldown
     */
  isOnCooldown(skillId) {
    return this.skillCooldowns.has(skillId);
  }

  /**
     * Get remaining cooldown
     */
  getCooldown(skillId) {
    return this.skillCooldowns.get(skillId) || 0;
  }
}