#include <string>

using namespace std;

#include <SDL3/SDL.h>
#include <SDL3_ttf/SDL_ttf.h>

#include "../SDLHelpers.h"

#include "Listbox.h"

Listbox::Listbox(vector<string> list, int item_size, SDL_Rect pos) : Item(pos) {
    this->list = list;
    this->item_size = item_size;
    selected = 1;
    setSurface(SDL_CreateSurface(getPos()->w, getPos()->h, SDL_GetPixelFormatForMasks(32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000)));
    drawListbox();
}

Listbox::~Listbox() {
    SDL_DestroySurface(getSurface());
}

void Listbox::drawListbox() {
    SDL_Surface *surface = getSurface();
    int w = getPos()->w;
    int h = getPos()->h;

    Uint32 *p = (Uint32 *) surface->pixels;
    SDL_Color color;
    for (int y = 0; y < h; y++) {
        for (int x = 0; x < w; x++) {
            if (y == 0 || y == h-1 || x == 0 || x == w-1) {
                color.r = 0;
                color.g = 0;
                color.b = 0;
            } else {
                color.r = 255;
                color.g = 255;
                color.b = 255;
            }
            *p = SDL_MapRGB(SDL_GetPixelFormatDetails(surface->format), NULL, color.r, color.g, color.b);
            p++;
        }
    }

    vector<string> fonts;
    fonts.push_back("ariblk.ttf");
    fonts.push_back("FreeSans.ttf");
    fonts.push_back("DejaVuSans.ttf");
    TTF_Font *font = openFont(fonts, 14);
    if (!font) {
        cout << "TTF_OpenFont is broken!" << endl;
    } else {
        for (int x = 0; x < list.size(); x++) {
            SDL_Color text_color = {0, 0, 0};
            SDL_Surface *text_surface;
            if(!(text_surface = TTF_RenderText_Blended(font, list[x].c_str(), list[x].length(), text_color))) {
                cout << SDL_GetError() << endl;
            }
            SDL_Rect pos;
            pos.x = 8;
            pos.y = x * item_size;
            SDL_BlitSurface(text_surface, NULL, surface, &pos);
            SDL_DestroySurface(text_surface);
        }
        TTF_CloseFont(font);
    }
}

bool Listbox::onMousePress(int x, int y) {
    bool is_in_x = x > getPos()->x && x < getPos()->x + getPos()->w;
    bool is_in_y = y > getPos()->y && y < getPos()->y + getPos()->h;
    if (is_in_x && is_in_y) {
        selected = (y - getPos()->y) / item_size;
        if (value_changed_func) {
            (*value_changed_func)(p);
        }
        return true;
    }
    return false;
}

void Listbox::setValueChangedFunc(void (*value_changed_func)(void *p), void *p) {
    this->value_changed_func = value_changed_func;
    this->p = p;
}

int Listbox::getSelected() {
    return selected;
}