// enemy_event_dispatcher.cpp - Implementació del dispatcher d'events d'enemic
// © 2026 JailDesigner

#include "game/systems/enemy_event_dispatcher.hpp"

#include <cstdint>

#include "core/defaults.hpp"
#include "core/types.hpp"
#include "game/entities/bullet.hpp"
#include "game/entities/bullet_config.hpp"
#include "game/entities/enemy_config.hpp"

namespace Systems::EnemyEvents {

    namespace {
        constexpr uint8_t NO_SHOOTER = 0xFF;

        void doAddScore(Systems::Collision::Context& ctx, const Enemy& enemy, uint8_t shooter) {
            const int POINTS = enemy.getConfig().score;
            if (shooter != NO_SHOOTER) {
                ctx.score_per_player[shooter] += POINTS;
            }
            ctx.floating_score_manager.crear(POINTS, enemy.getCenter());
        }

        void doCreateDebris(Systems::Collision::Context& ctx, const Enemy& enemy) {
            constexpr float SPEED_EXPLOSIO = 80.0F;
            const Vec2 INHERITED_VEL = enemy.getVelocityVector() *
                Defaults::Physics::Debris::ENEMY_VELOCITY_INHERITANCE;
            ctx.debris_manager.explode(
                enemy.getShape(),
                enemy.getCenter(),
                0.0F,
                1.0F,
                SPEED_EXPLOSIO,
                enemy.getBrightness(),
                INHERITED_VEL,
                0.0F,
                0.0F,
                Defaults::Sound::EXPLOSION,
                enemy.getConfig().colors.normal,
                Defaults::Physics::Debris::ENEMY_LIFETIME,
                Defaults::Physics::Debris::ENEMY_FRICTION,
                Defaults::Physics::Debris::ENEMY_SEGMENT_MULTIPLIER);
        }

        void doCreateFireworks(Systems::Collision::Context& ctx, const Enemy& enemy) {
            ctx.firework_manager.spawn(enemy.getCenter(),
                Defaults::FX::Firework::DEFAULT_COLOR,
                Defaults::FX::Firework::SPEED,
                Defaults::FX::Firework::N_POINTS,
                Defaults::FX::Firework::INITIAL_BRIGHTNESS,
                /*glow=*/true,
                enemy.getConfig().colors.wounded);
        }

        void doApplyImpulse(Enemy& enemy, const Bullet* bullet) {
            if (bullet == nullptr) {
                return;
            }
            const Vec2 IMPULSE = bullet->getBody().velocity *
                (bullet->getBody().mass * bullet->getConfig().physics.impact_momentum_factor);
            enemy.applyImpulse(IMPULSE);
        }
    }  // namespace

    void dispatchEvent(Systems::Collision::Context& ctx, Enemy& enemy, EnemyEventType event, uint8_t shooter_id, const Bullet* bullet) {
        const auto& actions = enemy.getConfig().events.getActions(event);
        for (const auto& action : actions) {
            switch (action.type) {
                case EnemyActionType::SET_HURT:
                    if (enemy.isWounded()) {
                        // Segon hit sobre wounded → mort immediata (regla 2-hits).
                        dispatchEvent(ctx, enemy, EnemyEventType::ON_DESTROY, shooter_id, bullet);
                        enemy.destroy();
                    } else {
                        enemy.hurt(shooter_id);
                    }
                    break;
                case EnemyActionType::DESTROY:
                    dispatchEvent(ctx, enemy, EnemyEventType::ON_DESTROY, shooter_id, bullet);
                    enemy.destroy();
                    break;
                case EnemyActionType::ADD_SCORE:
                    doAddScore(ctx, enemy, shooter_id);
                    break;
                case EnemyActionType::CREATE_DEBRIS:
                    doCreateDebris(ctx, enemy);
                    break;
                case EnemyActionType::CREATE_FIREWORKS:
                    doCreateFireworks(ctx, enemy);
                    break;
                case EnemyActionType::APPLY_IMPULSE:
                    doApplyImpulse(enemy, bullet);
                    break;
            }
        }
    }

}  // namespace Systems::EnemyEvents