src/headless/main.cpp


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#include <openvic-simulation/GameManager.hpp>
#include <openvic-simulation/dataloader/Dataloader.hpp>
#include <openvic-simulation/utility/Logger.hpp>

using namespace OpenVic;

static char const* get_program_name(char const* name) {
   static constexpr char const* missing_name = "<program>";
   if (name == nullptr) return missing_name;
   char const* last_separator = name;
   while (*name != '\0') {
      if (*name == '/' || *name == '\\') {
         last_separator = name + 1;
      }
      ++name;
   }
   if (*last_separator == '\0') return missing_name;
   return last_separator;
}

static bool headless_load(Dataloader::path_vector_t const& roots) {
   bool ret = true;

   Logger::set_info_func([](std::string&& str) { std::cout << str; });
   Logger::set_warning_func([](std::string&& str) { std::cerr << str; });
   Logger::set_error_func([](std::string&& str) { std::cerr << str; });

   GameManager game_manager { []() {
      Logger::info("State updated");
   } };
   Dataloader dataloader;

   if (!dataloader.set_roots(roots)) {
      Logger::error("Failed to set dataloader roots!");
      ret = false;
   }
   if (!dataloader.load_defines(game_manager)) {
      Logger::error("Failed to load defines!");
      ret = false;
   }
   if (!game_manager.load_hardcoded_defines()) {
      Logger::error("Failed to load hardcoded defines!");
      ret = false;
   }
   if (!dataloader.load_localisation_files(
      [](std::string_view key, Dataloader::locale_t locale, std::string_view localisation) -> bool {
         return true;
      }
   )) {
      Logger::error("Failed to load localisation!");
      ret = false;
   }

   return ret;
}

int main(int argc, char const* argv[]) {
   Dataloader::path_vector_t roots;
   if (argc < 2) {
      // TODO - non-Windows default paths
      static const fs::path default_path = "C:/Program Files (x86)/Steam/steamapps/common/Victoria 2";

      std::cout
         << "Usage: " << get_program_name(argc > 0 ? argv[0] : nullptr) << " <base defines dir> [[mod defines dir]+]\n"
         << "Requires defines path(s) as arguments, starting with the base defines and continuing with mods.\n"
         << "(Paths with spaces need to be enclosed in \"quotes\").\n"
         << "Defaulting to " << default_path << std::endl;
      roots.push_back(default_path);
   } else {
      for (int i = 1; i < argc; ++i) {
         roots.push_back(argv[i]);
      }
   }

   std::cout << "!!! HEADLESS SIMULATION START !!!" << std::endl;

   const bool ret = headless_load(roots);

   std::cout << "!!! HEADLESS SIMULATION END !!!" << std::endl;

   std::cout << "\nLoad returned: " << (ret ? "SUCCESS" : "FAILURE") << std::endl;

   return ret ? 0 : -1;
}