#include "sdlpp_textrenderer.hpp"

namespace SDLPP {
TextRenderer::TextRenderer( double x, double y, double w, double h,
                            std::shared_ptr< Renderer > &r )
        : RectangleRender( x, y, w, h, r ) {}
TextRenderer::TextRenderer( double x, double y, double w, double h,
                            std::shared_ptr< Renderer > &r,
                            std::shared_ptr< Font > font,
                            const std::string &text, const std::string &color,
                            const std::string &outline_color,
                            double outline_size, int flags )
        : RectangleRender( x, y, w, h, r ) {
    position_flags = flags;
    saveFontConfig( font, color, outline_color, outline_size );
    changeText( text );
}
TextRenderer::TextRenderer( double x, double y, double w, double h,
                            std::shared_ptr< Renderer > &r,
                            const std::string &text,
                            std::shared_ptr< FontConfiguration > config,
                            int flags )
        : RectangleRender( x, y, w, h, r ) {
    position_flags = flags;
    saveFontConfig( config );
    changeText( text );
}
void TextRenderer::setText( std::shared_ptr< Font > font,
                            const std::string &text, const std::string &color,
                            const std::string &outline_color,
                            double outline_size ) {
    changeText(text);
    setTextColor( font, color, outline_color, outline_size );
}
void TextRenderer::setText( const std::string &text,
                            std::shared_ptr< FontConfiguration > config ) {
    changeText(text);
    setTextColor( config );
}
void TextRenderer::setTextColor( std::shared_ptr< Font > font,
                                 const std::string &color,
                                 const std::string &outline_color,
                                 double outline_size ) {
    saveFontConfig( font, color, outline_color, outline_size );
}
void TextRenderer::setTextColor( std::shared_ptr< FontConfiguration > config ) {
    saveFontConfig( config );
}
void TextRenderer::changeText( const std::string &text ) {
    _text = text;
    text_change = true;
}
void TextRenderer::setFlags( int flags ) {
    position_flags = flags;
    updateDstRect();
}
void TextRenderer::render() {
    if(text_change) {
        updateTexture();
        text_change = false;
    }
    if ( !getHidden() ) {
        if ( polygon )
            polygon->render( *renderer );
        if ( texture != NULL ) {
            SDL_Point *rotation_point = NULL;
            if ( rotation_center.getX() != -1 ) {
                rotation_point = &rotation_center_point;
            }
            SDL_RenderCopyEx( renderer->getRendererPtr(),
                              texture->getTexturePtr(), NULL, &dst_rect,
                              rotation_angle, rotation_point, flip );
        }
    }
    if ( hasCollisions() && renderer->getRenderColiders() && !getHidden() ) {
        for ( const auto &col : getCollisions() )
            col->render( *renderer, colider_color );
    }
}
void TextRenderer::updateTexture() {
    if(_text.empty()) {
        texture = NULL;
        return;
    }
    int fontSize = 0.6 * getRect().h;
    _config->getFont()->changeFontSize( fontSize );
    int intOutline = _config->getOutlineSize();
    if ( intOutline != -1 ) {
        intOutline = _config->getOutlineSize() * fontSize;
    }
    setTexture( *_config->getFont(), _text, _config->getColor(),
                _config->getOutlineColor(), intOutline );
    _config->getFont()->revertSize();
}
void TextRenderer::updateSizeAndPosition() {
    RectangleRender::updateSizeAndPosition();
    // TODO only if size actually changed
//    updateTexture();
    text_change = true;
    updateDstRect();
}
std::shared_ptr< RenderObject > TextRenderer::copySelf() {
    auto ret = std::make_shared< TextRenderer >( *this );
    copyTo( ret );
    return ret;
}

void TextRenderer::copyTo( std::shared_ptr< RenderObject > other ) {
    RectangleRender::copyTo( other );
}

void TextRenderer::updateDstRect() {
    if ( !texture )
        return;
    int text_width{}, text_height{};
    SDL_QueryTexture( texture->getTexturePtr(), NULL, NULL, &text_width,
                      &text_height );
    if ( text_width < rect.w && text_height < rect.h ) {
        dst_rect.w = text_width;
        dst_rect.h = text_height;
    } else {
        double x_div = static_cast< double >( text_width ) /
                       static_cast< double >( rect.w );
        double y_div = static_cast< double >( text_height ) /
                       static_cast< double >( rect.h );
        if ( x_div > y_div ) {
            dst_rect.w = text_width / x_div;
            dst_rect.h = text_height / x_div;
        } else {
            dst_rect.w = text_width / y_div;
            dst_rect.h = text_height / y_div;
        }
    }
    if ( !( position_flags & SDLPP_TEXT_LEFT ||
            position_flags & SDLPP_TEXT_RIGHT ) ) {
        dst_rect.x = rect.x + ( rect.w - dst_rect.w ) / 2;
    } else if ( position_flags & SDLPP_TEXT_LEFT ) {
        dst_rect.x = rect.x;
    } else if ( position_flags & SDLPP_TEXT_RIGHT ) {
        dst_rect.x = rect.x + rect.w - dst_rect.w;
    }
    if ( !( position_flags & SDLPP_TEXT_TOP ||
            position_flags & SDLPP_TEXT_BOTTOM ) ) {
        dst_rect.y = rect.y + ( rect.h - dst_rect.h ) / 2;
    } else if ( position_flags & SDLPP_TEXT_TOP ) {
        dst_rect.y = rect.y;
    } else if ( position_flags & SDLPP_TEXT_BOTTOM ) {
        dst_rect.y = rect.y + rect.h - dst_rect.h;
    }
}
void TextRenderer::saveFontConfig( std::shared_ptr< Font > font,
                                   const std::string &color,
                                   const std::string &outline_color,
                                   double outline_size ) {
    auto config = std::make_shared< FontConfiguration >( font, color, outline_color,
                                                     outline_size );
    saveFontConfig(config);
}
void TextRenderer::saveFontConfig(
    std::shared_ptr< FontConfiguration > config ) {
    _config = std::move(config);
    text_change = true;
}
} // namespace SDLPP