#include <string>
#include <iostream>

using namespace std;

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

#include "../SDLHelpers.h"

#include "DropDownList.h"
#include "DlgDropDownList.h"

DropDownList::DropDownList(vector<string> list, vector<Dialog *> *dialogs, SDL_Rect pos) : Item(pos) {
    this->list = list;
    this->dialogs = dialogs;
    selected = 0;
    pressed = false;
    listbox_item_size = 20;
    value_changed_func = NULL;
    setSurface(SDL_CreateSurface(getPos()->w, getPos()->h, SDL_GetPixelFormatForMasks(32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000)));
    drawDropDownList();
}

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

void DropDownList::drawDropDownList() {
    listbox_height = list.size() * listbox_item_size;

    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 || x == w-18) {
                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++;
        }
    }

    //drawing arrow
    p = (Uint32 *) surface->pixels;
    int posx = w - 13;
    int posy = h / 2 - 2;
    for (int y = 0; y < 4; y++) {
        for (int x = 0; x < 8 - y * 2; x++) {
            p[(posy + y) * w + (posx + x + y)] = SDL_MapRGB(SDL_GetPixelFormatDetails(surface->format), NULL, color.r, color.g, color.b);
        }
    }

    SDL_Color text_color = {0, 0, 0};
    vector<string> fonts;
    fonts.push_back("ariblk.ttf");
    fonts.push_back("FreeSans.ttf");
    fonts.push_back("DejaVuSans.ttf");
    fonts.push_back("arial.ttf");
    TTF_Font *font = openFont(fonts, 14);
    SDL_Surface *text_surface;
    if (!font)
        cout << "TTF_OpenFont is broken!" << endl;
    if(!(text_surface = TTF_RenderText_Blended(font, list[selected].c_str(), list[selected].length(), text_color)))
        cout << SDL_GetError() << endl;
    SDL_Rect pos;
    pos.x = 8;
    pos.y = surface->h / 2 - text_surface->h / 2;
    SDL_BlitSurface(text_surface, NULL, surface, &pos);
    SDL_DestroySurface(text_surface);
    TTF_CloseFont(font);
}

bool DropDownList::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) {
        //setSurface(buttonDown);
        pressed = true;
    return true;
    }
  return false;
}

void DropDownList::onMouseRelease(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 && pressed) {
        int height;
        bool add_scrollbar;
        if (listbox_height < 200) {
            height = listbox_height;
            add_scrollbar = false;
        } else {
            height = 200;
            add_scrollbar = true;
        }
        dialogs->push_back(new DlgDropDownList(this, getRect(getPos()->x, getPos()->y + getPos()->h, getPos()->w, height), add_scrollbar));
    }
    //setSurface(buttonUp);
    pressed = false;
}

vector<string> DropDownList::getList() {
    return list;
}

void DropDownList::setSelected(int selected) {
    this->selected = selected;
    if (value_changed_func) {
        (*value_changed_func)(p, this);
    }
    drawDropDownList();
}

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

string DropDownList::getString() {
    return list[selected];
}

void DropDownList::reset() {
    list.clear();
}

void DropDownList::add(string s) {
    list.push_back(s);
}

bool DropDownList::select(string s) {
    for (int x = 0; x < list.size(); x++) {
        if (list[x].compare(s) == 0) {
            setSelected(x);
            return true;
        }
    }
    return false;
}

int DropDownList::getListboxItemSize() {
    return listbox_item_size;
}

int DropDownList::getListboxHeight() {
    return listbox_height;
}