// Copyright (c) 2023 Dominic Masters
// 
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

#include "VnSceneGen.hpp"

using namespace Dawn;

std::vector<std::string> VnSceneGen::getRequiredFlags() {
  return std::vector<std::string>{ "input", "output", "language-out" };
}

int32_t VnSceneGen::start() {
  // Open input file.
  File file(flags["input"]);
  std::string buffer;
  if(!file.readString(&buffer)) {
    std::cout << "Failed to read scene " << file.filename << std::endl;
    return 1;
  }

  // Parse XML
  Xml xml = Xml::load(buffer);
  std::string error;
  struct RootInformation info;
  auto ret = (RootParser()).parse(&xml, &info, &error);
  if(ret != 0) {
    std::cout << error << std::endl;
    return ret;
  }

  std::vector<std::string> lines;
  RootGen::generate(&lines, &info, "");

  // Generate buffer
  std::string bufferOut;
  auto itLine = lines.begin();
  while(itLine != lines.end()) {
    bufferOut += *itLine + "\n";
    ++itLine;
  }

  // Finished with XML data, now we can write data out.
  File fileOut(flags["output"] + ".hpp");
  if(!fileOut.mkdirp()) {
    std::cout << "Failed to make scene output dir" << std::endl;
    return 1;
  }
  if(!fileOut.writeString(bufferOut)) {
    std::cout << "Failed to generate scene " << fileOut.filename << std::endl;
    return 1;
  }

  // Now dump out the language strings to be picked up later.
  ret = languageSaveStrings(flags["language-out"], info.strings);
  if(ret != 0) return ret;

  return 0;
}