#include "../sdlpp/sdlpp.hpp"
#include "sprites.hpp"
#ifdef _WIN32
#include "../sdlpp/SDL2/SDL2_framerate.h"
#include <ctime>
#include <string>
#include <windows.h>
#else
#include <SDL2/SDL2_framerate.h>
#endif // UNIX

#include <thread>
#include "global_vars.hpp"
#include "objectids.hpp"
#include "blocks.hpp"
#include "maploader.hpp"
#include "mario_visitor.hpp"

#define SIDE_MOVEMENT 0.8
#define FALL_MOVEMENT 1

bool quit = false;
std::shared_ptr<SDLPP::RectangleRender> mario = nullptr;
std::shared_ptr<SDLPP::Texture> mario_texture = nullptr;

void setMarioStanding() {
    if(mario->getMovement().getX() == 0) {
        mario->pauseAnimation();
//        mario->setTexture(mario_texture, MARIO_STANDING_SRC);
    }
}

void handleKeyDown( SDL_Keycode key, SDLPP::Scene &scene ) {
    switch ( key ) {
    case SDLK_ESCAPE:
        quit = true;
        break;
    case SDLK_a:
        mario->resumeAnimation();
        mario->addMovement( -SIDE_MOVEMENT, 0 );
        break;
    case SDLK_d:
        mario->resumeAnimation();
        mario->addMovement( SIDE_MOVEMENT, 0 );
        break;
    case SDLK_SPACE:
    case SDLK_w:
        break;
    case SDLK_s:
        break;
    case SDLK_r:
        scene.getRenderer().setRenderColiders(
            !scene.getRenderer().getRenderColiders() );
    default:
        break;
    }
}

void handleKeyUp( SDL_Keycode key ) {
    switch ( key ) {
    case SDLK_a:
        mario->resumeAnimation();
        mario->addMovement( SIDE_MOVEMENT, 0 );
        break;
    case SDLK_d:
        mario->resumeAnimation();
        mario->addMovement( -SIDE_MOVEMENT, 0 );
        break;
    case SDLK_w:
    case SDLK_s:
    default:
        break;
    }
}

void pollEvents( SDLPP::Scene &scene ) {
    SDL_Event event;
    while ( SDLPP::getSDLEvent( event ) ) {
        switch ( event.type ) {
        case SDL_QUIT:
            quit = true;
            break;
        case SDL_KEYDOWN:
            if ( !event.key.repeat )
                handleKeyDown( event.key.keysym.sym, scene );
            break;
        case SDL_KEYUP:
            handleKeyUp( event.key.keysym.sym );
            break;
        case SDL_WINDOWEVENT:
            if ( event.window.event == SDL_WINDOWEVENT_RESIZED )
                scene.updateSizeAndPosition();
        default:
            break;
        }
    }
}

void doInput( std::shared_ptr< SDLPP::Scene > scene ) {
    FPSmanager gFPS;
    SDL_initFramerate( &gFPS );
    SDL_setFramerate( &gFPS, 200 );
    while ( true ) {
        SDL_framerateDelay( &gFPS );
        pollEvents( *scene );
        scene->updateScene();
        MarioVisitor mv{};
        scene->visitCollisions(*mario, mv);
        if(mv.isDead()) {
            quit = true;
        }
        if(!mv.isOnGround()) {
            mario->setMovement(mario->getMovement().getX(), FALL_MOVEMENT);
        } else {
            mario->resetMovementY();
        }
        auto playerX = mario->getRect().x;
        auto width = scene->getWidth();
        auto rightBarrier = width * 0.7;
        auto leftBarrier = width * 0.3;
        auto rightmostX =
            scene->rightmost()->getRect().x + scene->rightmost()->getRect().w;
        auto leftmostX = scene->leftmost()->getRect().x;
        scene->moveEverything(
            ( playerX > rightBarrier && rightmostX > width ) *
                ( rightBarrier - playerX ) / width,
            0 );
        scene->moveEverything( ( playerX < leftBarrier && leftmostX < 0 ) *
                                   ( leftBarrier - playerX ) / width,
                               0 );
    }
}

#ifdef _WIN32
int WINAPI wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
                     PWSTR szCmdLine, int nCmdShow ) {
#else
int main() {
#endif
    SDLPP::init();
    SDLPP::Window w( "Mario clone!" );
    w.setResizable( true );

    auto renderer = std::make_shared< SDLPP::Renderer >( w );
    renderer->setBlendMode( SDL_BLENDMODE_BLEND );
    
    // prepare global vars
    g_terrain_texture = std::make_shared<SDLPP::Texture>(renderer, "sprites/terrain.png", MARIO_OVERWORLD_COLORKEY);

    auto scene = std::make_shared<SDLPP::Scene>(renderer);
    auto bg = std::make_shared<SDLPP::RectangleRender>(0,0,10,10,renderer, MARIO_OVERWORLD_COLORKEY, true);
    bg->setPermanent();
    bg->setId(1);
    scene->addObject(bg);
    mario_texture = std::make_shared<SDLPP::Texture>(renderer, "sprites/mario.png", MARIO_OVERWORLD_COLORKEY);
    mario = std::make_shared<SDLPP::RectangleRender>(
            0, 0, BLOCK_SIZE, BLOCK_SIZE, renderer, mario_texture, MARIO_OVERWORLD_STANDING_SRC);
    mario->setAnimationFrames( MARIO_OVERWORLD_WALK_ANIM );
    mario->setId(2);
    mario->centerX();
    mario->setAnimationSpeed(12.5);
    mario->pauseAnimation();
//    mario->setTexture(mario_texture, MARIO_STANDING_SRC);
    mario->setMovement(0, FALL_MOVEMENT);
    mario->setMovementSpeed(0.4);
    mario->addCollision(SDLPP::RectColider(0.11,0,0.8,1));
    scene->addObject(mario);

    auto defeat = std::make_shared<SDLPP::RectangleRender>(
            0,1.01,0,0,renderer);
    defeat->setId(DEATH_ID);
    defeat->centerX();
    defeat->setStatic();
    auto defeatCol = SDLPP::RectColider(-1, 0, -1, -1);
    defeatCol.setInfinite();
    defeat->addCollision(defeatCol);

    scene->addObject(defeat);

    loadMap(scene, mario, "testmap.txt", renderer);

    FPSmanager gFPS;
    SDL_initFramerate( &gFPS );
    SDL_setFramerate( &gFPS, 60 );

    auto base = SDL_GetTicks();
    int frames = 0;
    std::thread inputThread( doInput, scene );
    inputThread.detach();
    while ( !quit ) {
        SDL_PumpEvents();
        SDL_framerateDelay(&gFPS);
        setMarioStanding();
        scene->renderScene();
        renderer->presentRenderer();
        frames++;
        if ( SDL_GetTicks() - base >= 1000 ) {
            std::cout << "FPS: " << frames << std::endl;
            frames = 0;
            base = SDL_GetTicks();
        }
    }

    return 0;
}