package com.example.systems;

import com.example.components.Attack;
import com.example.components.CombatLog;
import com.example.components.Health;
import com.example.components.HumanDefense;
import com.example.components.Stats;
import com.example.ecs.Entity;
import com.example.ecs.Registry;
import com.example.ecs.System;

public class DamageSystem extends System {
    public DamageSystem(Registry registry) {
        super(registry);
    }

    public void run() {
        for (Entity attackEntity : registry.getWithComponents(Attack.class)) {
            Attack attack = registry.getComponent(attackEntity,  Attack.class);
            Stats targetStats = registry.getComponent(attack.target(), Stats.class);
            Health targetHealth = registry.getComponent(attack.target(), Health.class);

            double dmgDealt = attack.damage() * (1 - targetStats.armor());
            if (registry.hasComponent(attack.target(), HumanDefense.class)) {
                HumanDefense defense = registry.getComponent(attack.target(), HumanDefense.class);
                dmgDealt -= dmgDealt * defense.defense();
            }

            targetHealth.lowerHp(dmgDealt);
            registry.addComponent(attackEntity, new CombatLog(attack.source(), attack.target(), attack.damage(), dmgDealt));
        }
    }
}