// Copy of game_launcher.cpp for emulator build
#include "game_launcher.h"
#include "../display/low_level_gui.h"
#include "../display/low_level_render.h"
#include "input_manager.h"
#include <stdio.h>
extern Font font_5x5_obj;
GameLauncher::GameLauncher(uint16_t width, uint16_t height,
                           LowLevelRenderer *renderer, LowLevelGUI *gui,
                           InputManager *input_manager)
    : width(width), height(height), renderer(renderer), gui(gui),
      input_manager(input_manager), selected_index(0), selected_game(nullptr),
      current_page(0) {}
void GameLauncher::register_game(
    const char *name, const char *description,
    std::function<Game *(uint16_t, uint16_t, LowLevelRenderer *, LowLevelGUI *,
                         InputManager *)>
        factory) {
  GameEntry entry;
  entry.name = name;
  entry.description = description;
  entry.factory = factory;
  games.push_back(entry);
  printf("Registered game: %s - %s\n", name, description);
}
void GameLauncher::draw() {
  LowLevelWindow *window =
      gui->draw_new_window(10, 10, width - 20, height - 20, "Game Launcher");
  renderer->set_font(&font_5x5_obj);

  int total_pages = get_total_pages();
  char title[64];
  snprintf(title, sizeof(title), "Select a Game: (Page %d/%d)",
           current_page + 1, total_pages);
  renderer->draw_string_scaled(30, 40, title, 2);

  int page_start = get_page_start_index();
  int page_end = get_page_end_index();

  for (int i = page_start; i < page_end && i < (int)games.size(); i++) {
    int item_index = i - page_start;
    int y = MENU_Y_START + (item_index * MENU_ITEM_HEIGHT);
    bool is_selected = (i == selected_index);
    gui->draw_button(window, 20, y, games[i].name, is_selected, true);
    renderer->set_font(&font_5x5_obj);
    renderer->set_text_color(true);
    renderer->draw_string_scaled(50, y + 36, games[i].description, 1);
  }

  if (total_pages > 1) {
    int button_y = height - 65;
    renderer->set_font(&font_5x5_obj);
    gui->draw_button(window, PREV_BUTTON_X, button_y, "PREV", false, true);
    gui->draw_button(window, NEXT_BUTTON_X, button_y, "NEXT", false, true);
    renderer->set_font(&font_5x5_obj);
    renderer->draw_string_scaled(30, height - 25, "Touch buttons or KEY0/KEY1",
                                 1);
  } else {
    renderer->set_font(&font_5x5_obj);
    renderer->draw_string_scaled(
        30, height - 35, "KEY0: Navigate | KEY1: Select | Touch to play", 1);
  }
}
bool GameLauncher::update(const InputEvent &event) {
  bool needs_refresh = false;
  int total_pages = get_total_pages();

  switch (event.type) {
  case INPUT_TOUCH_DOWN: {
    // Check if touch is on navigation buttons (if multiple pages)
    if (total_pages > 1) {
      if (event.x >= PREV_BUTTON_X && event.x < PREV_BUTTON_X + BUTTON_WIDTH &&
          event.y >= NAV_BUTTON_Y && event.y < NAV_BUTTON_Y + BUTTON_HEIGHT) {
        if (current_page > 0) {
          current_page--;
          selected_index = get_page_start_index();
          needs_refresh = true;
        }
        break;
      }
      if (event.x >= NEXT_BUTTON_X && event.x < NEXT_BUTTON_X + BUTTON_WIDTH &&
          event.y >= NAV_BUTTON_Y && event.y < NAV_BUTTON_Y + BUTTON_HEIGHT) {
        if (current_page + 1 < total_pages) {
          current_page++;
          selected_index = get_page_start_index();
          needs_refresh = true;
        }
        break;
      }
    }

    int page_start = get_page_start_index();
    int page_end = get_page_end_index();

    for (int i = page_start; i < page_end && i < (int)games.size(); i++) {
      int item_index = i - page_start;
      int y = MENU_Y_START + (item_index * MENU_ITEM_HEIGHT);
      if (event.y >= y - 5 && event.y < y + MENU_ITEM_HEIGHT - 5) {
        selected_game =
            games[i].factory(width, height, renderer, gui, input_manager);
        if (selected_game) {
          selected_game->init();
          return true;
        }
        break;
      }
    }
    break;
  }
  case INPUT_BUTTON_0: {
    int page_start = get_page_start_index();
    int page_end = get_page_end_index();

    if (page_end - page_start > 1) {
      int old_index = selected_index;
      selected_index++;
      if (selected_index >= page_end) {
        if (current_page + 1 < total_pages) {
          current_page++;
          selected_index = get_page_start_index();
        } else {
          current_page = 0;
          selected_index = 0;
        }
      } else if (selected_index < page_start) {
        selected_index = page_start;
      }
    } else {
      if (current_page + 1 < total_pages) {
        current_page++;
        selected_index = get_page_start_index();
      } else {
        current_page = 0;
        selected_index = 0;
      }
    }
    needs_refresh = true;
    break;
  }
  case INPUT_BUTTON_1: {
    if (selected_index >= 0 && selected_index < (int)games.size()) {
      selected_game = games[selected_index].factory(width, height, renderer,
                                                    gui, input_manager);
      if (selected_game) {
        selected_game->init();
        return true;
      }
    }
    break;
  }
  default:
    break;
  }
  return needs_refresh;
}
Game *GameLauncher::get_selected_game() { return selected_game; }
void GameLauncher::reset() {
  if (selected_game) {
    delete selected_game;
    selected_game = nullptr;
  }
  selected_index = 0;
  current_page = 0;
}

int GameLauncher::get_total_pages() const {
  if (games.empty())
    return 1;
  return (games.size() + GAMES_PER_PAGE - 1) / GAMES_PER_PAGE;
}

int GameLauncher::get_page_start_index() const {
  return current_page * GAMES_PER_PAGE;
}

int GameLauncher::get_page_end_index() const {
  return (current_page + 1) * GAMES_PER_PAGE;
}