// Smoke tests del WhipAttack: hitbox per direcció, retall contra murs i
// sarcs, aplicació de dany a mòmies whippable, alreadyHit. Friendly
// fire (Player↔Player) NO es cobreix aquí — Player viu enllaçat amb
// stubs sense estat real (veure whip_attack_player_stubs.cpp).
//
// Convencions iguals a test_entities_smoke: framework-less, REQUIRE
// macro, comptador `g_failures`. Execució: `./test_whip_attack` des de
// build/, working_dir = arrel del repo.
#include <SDL3/SDL.h>

#include <cstdlib>
#include <iostream>
#include <memory>
#include <vector>

#include "game/entities/concrete/mummy.hpp"
#include "game/entities/concrete/whip_attack.hpp"
#include "game/entities/entity_loader.hpp"
#include "game/entities/entity_manager.hpp"
#include "game/map/map.hpp"

namespace {

    int g_failures = 0;

    void check(bool cond, const char* msg, const char* file, int line) {
        if (!cond) {
            std::cerr << "  FAIL: " << msg << "  (" << file << ":" << line << ")\n";
            ++g_failures;
        }
    }

#define REQUIRE(cond) check((cond), #cond, __FILE__, __LINE__)

    // Spawneja un WhipAttack ben configurat per al test, sense surface.
    // Els tests no exerciten render, així que `surface_=nullptr` és OK.
    auto makeWhip(WhipAttack::Direction dir, float spawn_x, float spawn_y, float range_px)
        -> std::unique_ptr<WhipAttack> {
        auto yaml = EntityLoader::loadTemplate("whip_attack");
        auto whip = std::make_unique<WhipAttack>(yaml);
        whip->configure(dir, spawn_x, spawn_y, range_px);
        return whip;
    }

    void testWhipPixelRectPerDirection() {
        std::cout << "[W1] WhipAttack pixel_rect per direcció\n";
        Map::loadFrom("data/maps/pyramid.yaml");

        // Tots els spawns ben dins del playfield perquè el retall no
        // afecte la mida visual del sprite (pixel_rect = mida del frame
        // sencer).
        const float SPAWN_X = static_cast<float>(Map::playfield_x + 64);
        const float SPAWN_Y = static_cast<float>(Map::playfield_y + 64);
        const float RANGE = 48.0F;

        const auto WE = makeWhip(WhipAttack::Direction::EAST, SPAWN_X, SPAWN_Y, RANGE);
        REQUIRE(WE->getPixelRect().w == 48.0F);
        REQUIRE(WE->getPixelRect().h == 16.0F);

        const auto WW = makeWhip(WhipAttack::Direction::WEST, SPAWN_X, SPAWN_Y, RANGE);
        REQUIRE(WW->getPixelRect().w == 48.0F);
        REQUIRE(WW->getPixelRect().h == 16.0F);

        const auto WN = makeWhip(WhipAttack::Direction::NORTH, SPAWN_X, SPAWN_Y, RANGE);
        REQUIRE(WN->getPixelRect().w == 16.0F);
        REQUIRE(WN->getPixelRect().h == 48.0F);

        const auto WS = makeWhip(WhipAttack::Direction::SOUTH, SPAWN_X, SPAWN_Y, RANGE);
        REQUIRE(WS->getPixelRect().w == 16.0F);
        REQUIRE(WS->getPixelRect().h == 48.0F);
    }

    void testWhipHitboxClippedByWall() {
        std::cout << "[W2] hitbox retallat per la paret del playfield\n";
        Map::loadFrom("data/maps/pyramid.yaml");

        // Llancem un E des d'una posició a 10 px de la paret dreta del
        // playfield, amb un range de 48 px → la hitbox efectiva ha de
        // quedar acotada a 10 px (o menys, segons strict overlap).
        const float RIGHT_WALL = static_cast<float>(Map::playfield_x + Map::playfield_w);
        const float SPAWN_X = RIGHT_WALL - 10.0F;
        const float SPAWN_Y = static_cast<float>(Map::playfield_y + 64);
        const float RANGE = 48.0F;

        const auto W = makeWhip(WhipAttack::Direction::EAST, SPAWN_X, SPAWN_Y, RANGE);
        const auto DMG = W->getDamageRect();
        // Damage rect estrictament menor que el rang complet.
        REQUIRE(DMG.w < RANGE);
        // I no més enllà de la paret.
        REQUIRE(DMG.x + DMG.w <= RIGHT_WALL);
    }

    void testWhipHitboxFreeAtFullRange() {
        std::cout << "[W3] hitbox sense bloquejador → longitud completa\n";
        Map::loadFrom("data/maps/pyramid.yaml");

        // Spawn molt a l'interior i range curt: cap bloquejador a
        // l'abast → la longitud efectiva ha de ser RANGE sencer.
        const float SPAWN_X = static_cast<float>(Map::playfield_x + 32);
        const float SPAWN_Y = static_cast<float>(Map::playfield_y + 96);
        const float RANGE = 16.0F;

        const auto W = makeWhip(WhipAttack::Direction::SOUTH, SPAWN_X, SPAWN_Y, RANGE);
        const auto DMG = W->getDamageRect();
        REQUIRE(DMG.h == RANGE);
        REQUIRE(DMG.w == 16.0F);
    }

    void testWhipHitsMummyInRange() {
        std::cout << "[W4] mòmia en rang entra a HURT i es marca a alreadyHit\n";
        Map::loadFrom("data/maps/pyramid.yaml");

        EntityManager manager;
        auto mummy_yaml = EntityLoader::loadTemplate("mummy");
        auto mummy_owned = std::make_unique<Mummy>(mummy_yaml);
        mummy_owned->setCollisionBox({.offset_x = 0, .offset_y = 12, .width = 12, .height = 12});
        // Posicionem la mòmia 24 px a la dreta del whip → dins de range_px.
        const float SPAWN_X = static_cast<float>(Map::playfield_x + 64);
        const float SPAWN_Y = static_cast<float>(Map::playfield_y + 64);
        mummy_owned->setPixelRect({.x = SPAWN_X + 24.0F, .y = SPAWN_Y - 12.0F, .w = 12.0F, .h = 24.0F});
        auto* mummy_raw = static_cast<Mummy*>(manager.add(std::move(mummy_owned)));

        auto whip = makeWhip(WhipAttack::Direction::EAST, SPAWN_X, SPAWN_Y, 48.0F);
        whip->setWorldContext(&manager, nullptr);

        // Avancem l'animació fins arribar a un frame actiu (el YAML
        // declara `active_frames: [1, 2]`; cada frame dura 50 ms).
        // Amb 1 sol update de 0.06 s passem el frame 0 → 1.
        whip->update(0.06F);

        REQUIRE(mummy_raw->getState() == Mummy::State::HURT);
    }

    void testWhipNoHitOutOfRange() {
        std::cout << "[W5] mòmia fora del rang no rep dany\n";
        Map::loadFrom("data/maps/pyramid.yaml");

        EntityManager manager;
        auto mummy_yaml = EntityLoader::loadTemplate("mummy");
        auto mummy_owned = std::make_unique<Mummy>(mummy_yaml);
        mummy_owned->setCollisionBox({.offset_x = 0, .offset_y = 12, .width = 12, .height = 12});
        const float SPAWN_X = static_cast<float>(Map::playfield_x + 32);
        const float SPAWN_Y = static_cast<float>(Map::playfield_y + 64);
        // Mòmia 96 px a la dreta → fora del rang de 32.
        mummy_owned->setPixelRect({.x = SPAWN_X + 96.0F, .y = SPAWN_Y - 12.0F, .w = 12.0F, .h = 24.0F});
        auto* mummy_raw = static_cast<Mummy*>(manager.add(std::move(mummy_owned)));

        auto whip = makeWhip(WhipAttack::Direction::EAST, SPAWN_X, SPAWN_Y, 32.0F);
        whip->setWorldContext(&manager, nullptr);
        whip->update(0.06F);

        REQUIRE(mummy_raw->getState() == Mummy::State::ROAMING);
    }

    void testWhipSingleHitPerSwing() {
        std::cout << "[W6] una mòmia rep un sol impacte per swing\n";
        Map::loadFrom("data/maps/pyramid.yaml");

        EntityManager manager;
        auto mummy_yaml = EntityLoader::loadTemplate("mummy");
        auto mummy_owned = std::make_unique<Mummy>(mummy_yaml);
        mummy_owned->setCollisionBox({.offset_x = 0, .offset_y = 12, .width = 12, .height = 12});
        const float SPAWN_X = static_cast<float>(Map::playfield_x + 64);
        const float SPAWN_Y = static_cast<float>(Map::playfield_y + 64);
        mummy_owned->setPixelRect({.x = SPAWN_X + 24.0F, .y = SPAWN_Y - 12.0F, .w = 12.0F, .h = 24.0F});
        auto* mummy_raw = static_cast<Mummy*>(manager.add(std::move(mummy_owned)));

        auto whip = makeWhip(WhipAttack::Direction::EAST, SPAWN_X, SPAWN_Y, 48.0F);
        whip->setWorldContext(&manager, nullptr);

        // Primera passada: mòmia a HURT (el whip entra al frame 1
        // = actiu en el primer step de 0.06 s).
        whip->update(0.06F);
        REQUIRE(mummy_raw->getState() == Mummy::State::HURT);
        const float HURT_INITIAL = mummy_raw->getHurtRemainingS();

        // Avancem la mòmia (descompta el seu timer) i tornem a tickar
        // el whip mentre l'animació segueix activa: si `already_hit_`
        // funciona, el segon hit es bloqueja i el timer de la mòmia
        // NO es reseteja al valor inicial.
        mummy_raw->update(0.05F);
        const float HURT_AFTER_MUMMY_TICK = mummy_raw->getHurtRemainingS();
        REQUIRE(HURT_AFTER_MUMMY_TICK < HURT_INITIAL);

        whip->update(0.05F);  // frame 2, encara actiu
        // Si re-hit, enterHurt restauraria el timer; alreadyHit ho impedeix.
        REQUIRE(mummy_raw->getHurtRemainingS() == HURT_AFTER_MUMMY_TICK);
    }

}  // namespace

auto main() -> int {
    std::cout << "== smoke tests: WhipAttack ==\n";

    testWhipPixelRectPerDirection();
    testWhipHitboxClippedByWall();
    testWhipHitboxFreeAtFullRange();
    testWhipHitsMummyInRange();
    testWhipNoHitOutOfRange();
    testWhipSingleHitPerSwing();

    if (g_failures == 0) {
        std::cout << "ALL OK\n";
        return EXIT_SUCCESS;
    }
    std::cerr << g_failures << " failures\n";
    return EXIT_FAILURE;
}