#include "ListBoxWidget.h"
#include "DropBoxWidget.h"

//#include <math.h>


bool ListBoxWidget::ispressed()
{
    return is_pressed;
}

void ListBoxWidget::logic( CursorTask *mouse, KeyboardTask *keyboard )
{
    if (is_enabled && is_visible)
    {

        if (keyboard->kbESC)
        {
            DropBoxWidget *temp = dynamic_cast<DropBoxWidget*>(parent);
            temp->escape();

            //parent->escape();

            is_visible = false;
            return;
        }

        if (keyboard->kbRET || keyboard->kbENTER)
        {
            DropBoxWidget *temp = dynamic_cast<DropBoxWidget*>(parent);
            temp->validate();

            //parent->validate;

            is_visible = false;
            return;
        }


        is_hovering = cursoron( mouse );
        bool currently_pressed = (mouse->state || keyboard->kbSCRATCH) && is_hovering;


        if(currently_pressed && !is_pressed)
        {
            if (clickfunction)
                clickfunction( (char*) "test" );
        }
        else if(!currently_pressed && is_pressed)
        {
            if (releasefunction)
                releasefunction( (char*) "test" );
        }
        else if(is_hovering)
        {
            if (hoverfunction)
                hoverfunction( (char*) "test" );
        }

        is_pressed = currently_pressed;

        if (keyboard->kbDOWN && keyboard->iskeypressevent())
        {
            if ( selected < this->getnbitem()-1)
            {
                selected++;
            }

            // selected is an unsigned int so always>=0
            //if ((selected>=0) && (selected<=nbvisible-1))
            if (selected<=nbvisible-1)
            {
                scroll=0;
            }
            else
            {
                scroll=selected-nbvisible+1;
            }

            SDL_Delay( 150 );
        }

        if (keyboard->kbUP && keyboard->iskeypressevent())
        {
            if (selected>0)
            {
                selected--;
            }

            // selected is an unsigned int so always>=0
            //if ((selected>=0) && (selected<=nbvisible-1))
            if (selected<=nbvisible-1)
            {
                scroll=0;
            }
            else
            {
                scroll=selected-nbvisible+1;
            }

            SDL_Delay( 150 );
        }

        for (auto& c : children )
            c->logic( mouse, keyboard );
    }
}

void ListBoxWidget::render( SDL_Surface *screen, ColorEngine *colors, FontEngine *fonts )
{
    if (is_visible)
    {

        if (is_enabled)
        {
            roundedBoxRGBA( screen, xpos, ypos, xpos+width, ypos+height, 3, colors->widget_filling_enable.R, colors->widget_filling_enable.G, colors->widget_filling_enable.B, colors->widget_filling_enable.A);

            if (!is_hovering)
            {
                roundedRectangleRGBA( screen, xpos, ypos, xpos+width, ypos+height, 3, colors->widget_border_enable.R, colors->widget_border_enable.G, colors->widget_border_enable.B, colors->widget_border_enable.A);
            }
            else
            {
                roundedRectangleRGBA( screen, xpos, ypos, xpos+width, ypos+height, 3, colors->widget_border_cursoron.R, colors->widget_border_cursoron.G, colors->widget_border_cursoron.B, colors->widget_border_cursoron.A);
            }

            fonts->setcurrentfont( fonts->widget_text_enable.name );
            fonts->setmodifiertypo( fonts->widget_text_enable.typo );
            fonts->setmodifierunder( fonts->widget_text_enable.under );
            fonts->setmodifierstrike( fonts->widget_text_enable.strike );

            int sh = fonts->getstringheight( label );

            nbvisible = (unsigned int) ((height-0) / (sh*2));

            for(unsigned int i=scroll; i<=scroll+nbvisible-1; i++)
            {
                //Ongoing - to be optimised
                if(i<nbitem)
                {
                    if (i!=selected)
                    {
                        fonts->setcurrentfont( fonts->widget_text_enable.name );
                        fonts->setmodifiertypo( fonts->widget_text_enable.typo );
                        fonts->setmodifierunder( fonts->widget_text_enable.under );
                        fonts->setmodifierstrike( fonts->widget_text_enable.strike );

                        //We check if the titel can be written in the titlebar (with 5px on each side of the title
                        if (nbvisible>=nbitem) drawablecharlabel = fonts->assertstringlength( (char*) listitems[i], width-5-25 );
                        if (nbvisible<nbitem) drawablecharlabel = fonts->assertstringlength( (char*) listitems[i], width-5-25 );

                        strcpy( drawablelabel, (char*) listitems[i] );
                        if ((drawablecharlabel < strlen((char*) listitems[i])) && (drawablecharlabel >=2)) drawablelabel[drawablecharlabel-2] = '\u0010';
                        if ((drawablecharlabel < strlen((char*) listitems[i])) && (drawablecharlabel >=1)) drawablelabel[drawablecharlabel-1] = '\0';

                        if (drawablecharlabel!=0)
                        {
                            int sl = fonts->getstringwidth( drawablelabel );
                            int sh = fonts->getstringheight( drawablelabel );
                            fonts->drawstringleft( screen, drawablelabel, xpos+8, ypos+5+(unsigned int) ((i-scroll)*(sh*2)), colors->widget_text_enable.R, colors->widget_text_enable.G, colors->widget_text_enable.B, colors->widget_text_enable.A );
                        }


                        //int sh = fonts->getstringheight( (char*) listitems[i] );

                        //fonts->drawstringleft( screen, (char*) listitems[i], xpos+8, ypos+5+(unsigned int) ((i-scroll)*(sh*2)), colors->widget_text_enable.R, colors->widget_text_enable.G, colors->widget_text_enable.B, colors->widget_text_enable.A );
                    }
                    else
                    {
                        fonts->setcurrentfont( fonts->widget_text_selected.name );
                        fonts->setmodifiertypo( fonts->widget_text_selected.typo );
                        fonts->setmodifierunder( fonts->widget_text_selected.under );
                        fonts->setmodifierstrike( fonts->widget_text_selected.strike );


                        //We check if the titel can be written in the titlebar (with 5px on each side of the title
                        if (nbvisible>=nbitem) drawablecharlabel = fonts->assertstringlength( (char*) listitems[i], width-5-25 );
                        if (nbvisible<nbitem) drawablecharlabel = fonts->assertstringlength( (char*) listitems[i], width-5-25 );

                        strcpy( drawablelabel, (char*) listitems[i] );
                        if ((drawablecharlabel < strlen((char*) listitems[i])) && (drawablecharlabel >=2)) drawablelabel[drawablecharlabel-2] = '\u0010';
                        if ((drawablecharlabel < strlen((char*) listitems[i])) && (drawablecharlabel >=1)) drawablelabel[drawablecharlabel-1] = '\0';

                        if (drawablecharlabel!=0)
                        {
                            int sl = fonts->getstringwidth( drawablelabel );
                            int sh = fonts->getstringheight( drawablelabel );

                            // if we can see all the item, no need for space for the escalator on the right
                            if (nbvisible>=nbitem) roundedBoxRGBA( screen, xpos+3, ypos+3+(unsigned int) ((i-scroll)*(sh*2)), xpos+width-3, ypos+15+(unsigned int) ((i-scroll)*(sh*2)), 3, colors->widget_selection.R, colors->widget_selection.G, colors->widget_selection.B, colors->widget_selection.A );
                            //else we draw the selection line a bit shorter not to cover the escalator
                            if (nbvisible<nbitem) roundedBoxRGBA( screen, xpos+3, ypos+3+(unsigned int) ((i-scroll)*(sh*2)), xpos+width-18, ypos+15+(unsigned int) ((i-scroll)*(sh*2)), 3, colors->widget_selection.R, colors->widget_selection.G, colors->widget_selection.B, colors->widget_selection.A );


                            fonts->drawstringleft( screen, drawablelabel, xpos+8, ypos+5+(unsigned int) ((i-scroll)*(sh*2)), colors->widget_text_selected.R, colors->widget_text_selected.G, colors->widget_text_selected.B, colors->widget_text_selected.A );
                        }



                        /*
                        int sh = fonts->getstringheight( (char*) listitems[i] );

                       // if we can see all the item, no need for space for the escalator on the right
                        if (nbvisible>=nbitem) roundedBoxRGBA( screen, xpos+3, ypos+3+(unsigned int) ((i-scroll)*(sh*2)), xpos+width-3, ypos+15+(unsigned int) ((i-scroll)*(sh*2)), 3, colors->widget_selection.R, colors->widget_selection.G, colors->widget_selection.B, colors->widget_selection.A );
                        //else we draw the selection line a bit shorter not to cover the escalator
                        if (nbvisible<nbitem) roundedBoxRGBA( screen, xpos+3, ypos+3+(unsigned int) ((i-scroll)*(sh*2)), xpos+width-18, ypos+15+(unsigned int) ((i-scroll)*(sh*2)), 3, colors->widget_selection.R, colors->widget_selection.G, colors->widget_selection.B, colors->widget_selection.A );

                        fonts->drawstringleft( screen, (char*) listitems[i], xpos+8, ypos+5+(unsigned int) ((i-scroll)*(sh*2)), colors->widget_text_selected.R, colors->widget_text_selected.G, colors->widget_text_selected.B, colors->widget_text_selected.A );
                        */
                    }
                }
            }

            if (nbvisible<nbitem)
            {
                unsigned int escalator = (height-12)*selected/nbitem;

                if (!is_hovering)
                {
                    roundedRectangleRGBA( screen, xpos+width-15, ypos+3, xpos+width-3, ypos+height-3, 3, colors->widget_border_enable.R, colors->widget_border_enable.G, colors->widget_border_enable.B, colors->widget_border_enable.A);
                    filledCircleRGBA( screen, xpos+width-9, ypos+9+escalator, 4, colors->widget_border_enable.R, colors->widget_border_enable.G, colors->widget_border_enable.B, colors->widget_border_enable.A);
                }
                else
                {
                    roundedRectangleRGBA( screen, xpos+width-15, ypos+3, xpos+width-3, ypos+height-3, 3, colors->widget_border_cursoron.R, colors->widget_border_cursoron.G, colors->widget_border_cursoron.B, colors->widget_border_cursoron.A);
                    filledCircleRGBA( screen, xpos+width-9, ypos+9+escalator, 4, colors->widget_border_cursoron.R, colors->widget_border_cursoron.G, colors->widget_border_cursoron.B, colors->widget_border_cursoron.A);
                }
            }
        }
        else
        {
            roundedBoxRGBA( screen, xpos, ypos, xpos+width, ypos+height, 3, colors->widget_filling_disable.R, colors->widget_filling_disable.G, colors->widget_filling_disable.B, colors->widget_filling_disable.A);
            //Border of the button is black cause it is disabled
            roundedRectangleRGBA( screen, xpos, ypos, xpos+width, ypos+height, 3, colors->widget_border_disable.R, colors->widget_border_disable.G, colors->widget_border_disable.B, colors->widget_border_disable.A);

            fonts->setcurrentfont( fonts->widget_text_disable.name );
            fonts->setmodifiertypo( fonts->widget_text_disable.typo );
            fonts->setmodifierunder( fonts->widget_text_disable.under );
            fonts->setmodifierstrike( fonts->widget_text_disable.strike );

            int sh = fonts->getstringheight( label );

            nbvisible = (unsigned int) ((height-10) / (sh*2));

            for(unsigned int i=scroll; i<=scroll+nbvisible-1; i++)
            {
                //Ongoing - to be optimised and to be tested when using ListBoxWidget as a standalone Widget
                if(i<nbitem)
                {
                    if (i!=selected)
                    {
                        fonts->setcurrentfont( fonts->widget_text_enable.name );
                        fonts->setmodifiertypo( fonts->widget_text_enable.typo );
                        fonts->setmodifierunder( fonts->widget_text_enable.under );
                        fonts->setmodifierstrike( fonts->widget_text_enable.strike );

                        int sh = fonts->getstringheight( (char*) listitems[i] );

                        fonts->drawstringleft( screen, (char*) listitems[i], xpos+8, ypos+5+(unsigned int) ((i-scroll)*(sh*2)), colors->widget_text_disable.R, colors->widget_text_disable.G, colors->widget_text_disable.B, colors->widget_text_disable.A );
                    }
                    else
                    {
                        fonts->setcurrentfont( fonts->widget_text_selected.name );
                        fonts->setmodifiertypo( fonts->widget_text_selected.typo );
                        fonts->setmodifierunder( fonts->widget_text_selected.under );
                        fonts->setmodifierstrike( fonts->widget_text_selected.strike );

                        int sh = fonts->getstringheight( (char*) listitems[i] );

                        // if we can see all the item, no need for space for the escalator on the right
                        if (nbvisible>=nbitem) roundedRectangleRGBA( screen, xpos+3, ypos+3+(unsigned int) ((i-scroll)*(sh*2)), xpos+width-3, ypos+15+(unsigned int) ((i-scroll)*(sh*2)), 3, colors->widget_border_disable.R, colors->widget_border_disable.G, colors->widget_border_disable.B, colors->widget_border_disable.A );
                        //else we draw the selection line a bit shorter not to cover the escalator
                        if (nbvisible<nbitem) roundedRectangleRGBA( screen, xpos+3, ypos+3+(unsigned int) ((i-scroll)*(sh*2)), xpos+width-18, ypos+15+(unsigned int) ((i-scroll)*(sh*2)), 3, colors->widget_border_disable.R, colors->widget_border_disable.G, colors->widget_border_disable.B, colors->widget_border_disable.A );

                        fonts->drawstringleft( screen, (char*) listitems[i], xpos+5, ypos+5+(unsigned int) ((i-scroll)*(sh*2)), colors->widget_text_disable.R, colors->widget_text_disable.G, colors->widget_text_disable.B, colors->widget_text_disable.A );
                    }
                }
            }

            if (nbvisible<nbitem)
            {
                unsigned int escalator = (height-12)*selected/nbitem;

                roundedRectangleRGBA( screen, xpos+width-15, ypos+3, xpos+width-3, ypos+height-3, 3, colors->widget_border_disable.R, colors->widget_border_disable.G, colors->widget_border_disable.B, colors->widget_border_disable.A );
                filledCircleRGBA( screen, xpos+width-9, ypos+9+escalator, 4, colors->widget_border_disable.R, colors->widget_border_disable.G, colors->widget_border_disable.B, colors->widget_border_disable.A );
            }

         }

        for (auto& c : children )
            c->render( screen, colors, fonts );

    }
}