import { applySystemDamage } from "@thorium/utils/.server/ship/collisionDamage";
import { type Entity, System } from "@thorium/utils/ecs";
import { getAggregateDamage } from "@thorium/utils/flags/damageTypes";

export class SpontaneousFailureSystem extends System {
	static flightMode = ["nova"];

	test(entity: Entity) {
		return Boolean(entity.components.isPlayerShip);
	}

	update(entity: Entity, _elapsed: number) {
		const damageComponent = entity.components.damage;

		// If a component is online, check if it should be taken offline
		if (damageComponent && !damageComponent.offline) {
			const spontaneousFailureChance = damageComponent.failureRisk || 0;
			// Spontaneous failure chance is expressed as a percentage
			if (spontaneousFailureChance > 0) {
				const randomRoll = this.ecs.rng.nextAsPercentage();
				if (randomRoll < spontaneousFailureChance) {
					const currentDamage = getAggregateDamage(entity);
					const damageNeededToGoOffline = damageComponent.offlineDamage - currentDamage;
					// Add a random amount of damage to possibly damage the system more than needed
					const randomExtraDamage =
						this.ecs.rng.nextAsPercentage() * damageComponent.offlineDamage * 0.1;
					// Take the system offline
					applySystemDamage(entity, damageNeededToGoOffline + randomExtraDamage);
				}
			}
		}
	}
}