/*
* File name: paterns_menu.cpp
* Author: lejulien
* Date created: 01-01-1970 00:59:59
// Date modified: 12-01-2026 21:30:10
* ------
*/

#include <imgui.h>
#include <raylib.h>
#include <rlImGui.h>

#include <filesystem>
#include <fstream>
#include <iostream>
#include <paterns_menu.hpp>
#include <sstream>

namespace gol {

PaternsMenu::PaternsMenu(std::shared_ptr<ctx> ctx) : context_(ctx) {}

void PaternsMenu::Toogle() { is_open_ = !is_open_; }

bool PaternsMenu::isOpen() { return is_open_; }

void PaternsMenu::refresh() {
  paterns_name_list_.clear();
  paterns_paths_list_.clear();
  auto paterns_path = context_->program_dir / "paterns";
  if (std::filesystem::exists(paterns_path) &&
      std::filesystem::is_directory(paterns_path)) {
    for (const auto &entry :
         std::filesystem::directory_iterator(paterns_path)) {
      if (!std::filesystem::is_directory(entry) &&
          entry.path().has_filename()) {
        paterns_paths_list_[entry.path().filename()] = entry.path();
        paterns_name_list_.push_back(entry.path().filename());
      }
    }
  }
}

bool PaternsMenu::loadPatern(std::string &path) {
  std::ifstream file(path);
  std::string file_data;
  if (!file.is_open()) {
    std::cerr << "Failure in opening patern : " << path << std::endl;
    return false;
  }
  loaded_patern_.clear();
  try {
    std::getline(file, file_data);
    std::stringstream ss(file_data);
    std::string width, height, data;
    std::getline(ss, width, '|');
    std::getline(ss, height, '|');
    std::getline(ss, data, '|');
    patern_width_ = std::stoi(width);
    patern_height_ = std::stoi(height);
    for (int i = 0; i < patern_width_ * patern_height_; i++) {
      loaded_patern_.push_back((data[i] == '1') ? 1 : 0);
    }
  } catch (std::exception &e) {
    std::cerr << "Failure in loading patern : " << path << std::endl;
    return 1;
  }
  return true;
}

void PaternsMenu::display() {
  if (is_open_) {
    ImGuiWindowFlags paterns_flags =
        ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoResize;
    ImGui::SetNextWindowSize(ImVec2(200, 250), ImGuiCond_Always);
    ImGui::Begin("paterns", &is_open_, paterns_flags);
    for (auto patern_name : paterns_name_list_) {
      ImGui::PushID(patern_name.c_str());
      if (ImGui::Button(patern_name.c_str()) &&
          loadPatern(paterns_paths_list_[patern_name])) {
        // TODO: If patern is loaded successfuly, start the preview in the
        // editor
      }
      ImGui::PopID();
      ImGui::SameLine(ImGui::GetWindowWidth() - 57.);
      std::string del_id = patern_name.c_str();
      del_id.append("_del");
      ImGui::PushID(del_id.c_str());
      if (ImGui::Button("delete")) {
        std::filesystem::remove(paterns_paths_list_[patern_name]);
        refresh();
      }
      ImGui::PopID();
    }
    ImGui::End();
  }
}

}  // namespace gol