/*
** Alternative main.cpp - replace "SDL2-ImGui-FileDialogs/filedialogs/main.cpp" with this exact code
*/

#include <iostream> // std::cout, std::endl
#include <string>   // std::string, std::to_string
#include <vector>   // std::vector
#include <cstddef>  // std::size_t

#include "ImFileDialog/ImFileDialogMacros.h" // Easy Localization
#include "filedialogs.hpp"                   // NGS File Dialogs
#include "ghc/filesystem.hpp"                // GHC File System
#include "filesystem.hpp"                    // NGS File System

#if (defined(__APPLE__) && defined(__MACH__))
// Compile with: -framework AppKit -ObjC++
#include <AppKit/AppKit.h> // NSApplication
#endif

/* setup home directory
environment variable */
#if !defined(HOME_PATH)
#if defined(_WIN32) // Windows
#define HOME_PATH "USERPROFILE"
#else // Unix-likes
#define HOME_PATH "HOME"
#endif
#endif

// for SDL2
#if defined(_WIN32)
#undef main
#endif

// for MSVC
#if (defined(_WIN32) && defined(_MSC_VER))
#pragma comment(linker, "/subsystem:console /entry:mainCRTStartup")
#endif

namespace {
  void init() {
    #if defined(_WIN32)
    SetConsoleOutputCP(CP_UTF8);
    #elif (defined(__APPLE__) && defined(__MACH__))
    // hide icon from dock on macOS to match all the other platforms
    [[NSApplication sharedApplication] setActivationPolicy:(NSApplicationActivationPolicy)1];
    if (@available(macOS 14.0, *)) {
      [[NSApplication sharedApplication] yieldActivationToApplication:[NSRunningApplication currentApplication]];
      [[NSApplication sharedApplication] activate];
    } else {
      [[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
    }
    #endif

    // set imgui file dialogs window width and height; default is 720x424 pixels
    ngs::fs::environment_set_variable("IMGUI_DIALOG_WIDTH", std::to_string(720));
    ngs::fs::environment_set_variable("IMGUI_DIALOG_HEIGHT", std::to_string(424));
    
    // load all *.ttf and *.otf fonts of varying languages and combine them into one font from directory
    ngs::fs::environment_set_variable("IMGUI_FONT_PATH", ngs::fs::executable_get_directory() + "fonts");
    ngs::fs::environment_set_variable("IMGUI_FONT_SIZE", std::to_string(20)); // font size for dialogbox

    // setup imgui file dialog favorites config file absolute pathname
    ngs::fs::environment_set_variable("IMGUI_CONFIG_HOME", HOME_PATH);
    ngs::fs::environment_set_variable("IMGUI_CONFIG_FOLDER", "imfiledialogs");
    ngs::fs::environment_set_variable("IMGUI_CONFIG_FILE", "fdfavorites.txt");
    
    // if imgui file dialog favorites config file absolute pathname does not exist, then create one
    if (!ngs::fs::file_exists("${IMGUI_CONFIG_HOME}/.config/${IMGUI_CONFIG_FOLDER}/${IMGUI_CONFIG_FILE}")) {
      // setup favorites std::vector
      std::vector<std::string> favorites;
      favorites.push_back(ngs::fs::environment_get_variable(HOME_PATH));
      favorites.push_back(ngs::fs::directory_get_desktop_path());
      favorites.push_back(ngs::fs::directory_get_documents_path());
      favorites.push_back(ngs::fs::directory_get_downloads_path());
      favorites.push_back(ngs::fs::directory_get_music_path());
      favorites.push_back(ngs::fs::directory_get_pictures_path());
      favorites.push_back(ngs::fs::directory_get_videos_path());
      // add custom favorites to config text file; this file is not encrypted and may be easily edited by any software
      int desc = ngs::fs::file_text_open_write("${IMGUI_CONFIG_HOME}/.config/${IMGUI_CONFIG_FOLDER}/${IMGUI_CONFIG_FILE}");
      if (desc != -1) { // success; file can now be written to
        for (std::size_t i = 0; i < favorites.size(); i++) {
          // write favorite from vector at current index "i"
          ngs::fs::file_text_write_string(desc, favorites[i]);
          ngs::fs::file_text_writeln(desc); // write new line
        }
        // close file descriptor    
        ngs::fs::file_text_close(desc);
      }
    }
  }
} // anonymous namespace

int main() {
  init(); // setup all initialization related settings
  std::cout << ngs::imgui::get_open_filename("Portable Network Graphics (*.png)|*.png|" +
  std::string("Graphics Interchange Format (*.gif)|*.gif"), "Untitled.png") << std::endl;
  return 0;
}