/**
 * @file generate_markdown.cpp.in
 * @author Ryan Curtin
 *
 * This file is configured by CMake to generate all of the Markdown required by
 * the project.
 */
#include <mlpack/core.hpp>
#include "binding_info.hpp"
#include "print_doc_functions.hpp"
${MARKDOWN_INCLUDE_CODE}

using namespace mlpack;
using namespace mlpack::bindings;
using namespace mlpack::bindings::markdown;
using namespace std;

int main()
{
  // These come to use from CMake separated by semicolons.
  string languageList = "${MARKDOWN_ALL_LANGUAGES_LIST}";
  vector<string> languages;
  size_t index;
  while ((index = languageList.find(';')) != string::npos)
  {
    languages.push_back(languageList.substr(0, index));
    languageList = languageList.substr(index + 1);
  }
  languages.push_back(languageList);

  cout << "<div id=\"header\" markdown=\"1\">" << endl;

  // We need to create the input form selector for the language.
  cout << "<form>" << endl;
  cout << "  <div class=\"language-select-div\">" << endl;
  cout << "  <select id=\"language-select\" onchange=\"changeLanguage()\">"
      << endl;

  // Print the first manually, because it is selected.
  cout << "    <option value=\"" << languages[0] << "\" selected>"
      << languages[0] << "</option>" << endl;
  for (size_t i = 1; i < languages.size(); ++i)
  {
    cout << "    <option value=\"" << languages[i] << "\">" << languages[i]
        << "</option>" << endl;
  }

  cout << "  </select>" << endl;
  cout << "  </div>" << endl;
  cout << "</form>" << endl;
  cout << endl;

  // The links to the data type sections get put here.
  cout << " - [mlpack overview](#mlpack-overview){: .language-link #always }"
      << endl;
  for (size_t i = 0; i < languages.size(); ++i)
  {
    cout << " - [data formats](#" << languages[i] << "_data-formats){: "
        << ".language-link #" << languages[i] << " }" << endl;
  }

  ${MARKDOWN_HEADER_CODE}

  cout << endl << "</div>" << endl << endl;

  cout << "<div id=\"docs\" markdown=\"1\">" << endl;
  cout << endl;

  // Create all the headers for each language.
  for (size_t i = 0; i < languages.size(); ++i)
  {
    cout << "<div id=\"" << languages[i] << "\" class=\"language-header\" "
        << "markdown=\"1\">" << endl;
    cout << "# " << util::GetVersion() << " " << PrintLanguage(languages[i])
        << " binding documentation" << endl;
    cout << "</div>" << endl;
  }

  /**
   * "mlpack overview" section.  This will go at the top of the page.
   */
  cout << "## mlpack overview" << endl;
  cout << endl;
  cout << "mlpack is an intuitive, fast, and flexible C++ machine learning "
      "library with bindings to other languages.  It is meant to be a machine "
      "learning analog to LAPACK, and aims to implement a wide array of machine"
      " learning methods and functions as a \"swiss army knife\" for machine "
      "learning researchers.";
  cout << endl << endl;
  cout << "This reference page details mlpack's bindings to other languages. "
      "Further useful mlpack documentation links are given below.";
  cout << endl << endl;
  cout << " - [mlpack homepage](https://www.mlpack.org/)" << endl;
  cout << " - [mlpack on Github](https://github.com/mlpack/mlpack)" << endl;
  cout << " - [mlpack main documentation page]"
      << "(https://www.mlpack.org/docs.html)" << endl;
  cout << endl;

  /**
   * Discussion of different data types section.  This goes just below the
   * overview section at the top of the page.
   */
  for (size_t i = 0; i < languages.size(); ++i)
  {
    BindingInfo::Language() = languages[i];
    cout << PrintTypeDocs() << endl;
  }

  ${MARKDOWN_CALL_CODE}
  cout << "</div>" << endl << endl;

  // Make sure script gets included for changeLanguage().
  cout << "<script src=\"res/change_language.js\"></script>" << endl;
}