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

/**
 * System to handle health regeneration
 */
export class HealthRegenerationSystem extends System {
  constructor() {
    super('HealthRegenerationSystem');
    this.requiredComponents = ['Health'];
    this.priority = 35;
  }

  process(deltaTime, entities) {
    entities.forEach(entity => {
      const health = entity.getComponent('Health');
      if (!health || health.regeneration <= 0) return;

      // Regenerate health over time
      // Only regenerate if not recently damaged (5 seconds)
      const timeSinceDamage = (Date.now() - health.lastDamageTime) / 1000;
      if (timeSinceDamage > 5) {
        health.heal(health.regeneration * deltaTime);
      }
    });
  }
}