#include "sdlpp_rectcolider.hpp"

namespace SDLPP {
RectColider::RectColider( double x, double y, double w, double h )
        : CollisionPolygon( x, y ) {
    w_ = w;
    h_ = h;
}

bool RectColider::colidesWith( const SDLPP::CollisionPolygon &other ) const {
    if ( other.isCircle() ) {
        return other.colidesWith( *this );
    }
    if ( other.isInfinite() ) {
        return infinityIntersection( other, *this );
    }
    if ( isInfinite() )
        return infinityIntersection( *this, other );
    return intersects( *this, other );
}

bool RectColider::isCircle() const {
    return false;
}
int RectColider::topmost() const {
    return ( !isInfinite() || original_y != -1 ) * getY() + isInfinite() * -1;
}
int RectColider::bottommost() const {
    return ( !isInfinite() || h_ != -1 ) * ( getY() + pixel_h ) +
           isInfinite() * -1;
}
int RectColider::leftmost() const {
    return ( !isInfinite() || original_x != -1 ) * getX() + isInfinite() * -1;
}
int RectColider::rightmost() const {
    return ( !isInfinite() || w_ != -1 ) * ( getX() + pixel_w ) +
           isInfinite() * -1;
}

void RectColider::updateCollision( int x, int y, int w, int h ) {
    position_x = original_x * w + x;
    position_y = original_y * h + y;
    pixel_w = w_ * w;
    pixel_h = h_ * h;
}

void RectColider::render( Renderer &renderer,
                          const std::tuple< int, int, int, int > &color ) {
    auto rect = getRect();
    // outline with desired color at 50% opacity
    SDL_SetRenderDrawColor( renderer.getRendererPtr(), std::get< 0 >( color ),
                            std::get< 1 >( color ), std::get< 2 >( color ),
                            0x80 );
    SDL_RenderDrawRect( renderer.getRendererPtr(), &rect );
    // fill with desired color at 25% opacity
    SDL_SetRenderDrawColor( renderer.getRendererPtr(), std::get< 0 >( color ),
                            std::get< 1 >( color ), std::get< 2 >( color ),
                            0x40 );
    SDL_RenderFillRect( renderer.getRendererPtr(), &rect );
}

void RectColider::render( Renderer &renderer ) {
    auto rect = getRect();
    SDL_SetRenderDrawColor( renderer.getRendererPtr(), sdl_color.r, sdl_color.g,
                            sdl_color.b, sdl_color.a );
    SDL_RenderFillRect( renderer.getRendererPtr(), &rect );
    SDL_SetRenderDrawColor( renderer.getRendererPtr(), sdl_outline.r,
                            sdl_outline.g, sdl_outline.b, sdl_outline.a );
    SDL_RenderDrawRect( renderer.getRendererPtr(), &rect );
}

SDL_Rect RectColider::getRect() {
    if ( !isInfinite() )
        return { leftmost(), topmost(), pixel_w, pixel_h };

    SDL_Rect r = { 0, 0, 0, 0 };
    if ( ( r.x = leftmost() ) == -1 )
        r.x = 0;
    if ( ( r.y = topmost() ) == -1 )
        r.y = 0;
    if ( rightmost() == -1 )
        r.w = std::numeric_limits< int >::max();
    else
        r.w = pixel_w;
    if ( bottommost() == -1 )
        r.h = std::numeric_limits< int >::max();
    else
        r.h = pixel_h;
    return r;
}

std::shared_ptr< CollisionPolygon > RectColider::copySelf() {
    return std::make_shared< RectColider >( *this );
}

} // namespace SDLPP