/*
 * ProgramOptions.cpp
 *
 * Copyright (C) 2022 by Posit Software, PBC
 *
 * Unless you have received this program directly from Posit Software pursuant
 * to the terms of a commercial license agreement with Posit Software, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */

#include 

#include 

#include 
#include 

#include 
#include 

using namespace boost::program_options;

namespace rstudio {
namespace core {

namespace program_options {
 
namespace {

enum class OptionsParseState
{
   Initial,
   ConfigFile,
   CommandLine
};

bool validateOptionsProvided(const variables_map& vm,
                             const options_description& optionsDescription,
                             const std::string& configFile = std::string())
{
   for (const auto& pOptionsDesc : optionsDescription.options())
   {
      std::string optionName = pOptionsDesc->long_name();
      if ( !(vm.count(optionName)) )
      {
         std::string msg = "Required option " + optionName + " not specified";
         if (!configFile.empty())
            msg += " in config file " + configFile;
         reportError(msg, ERROR_LOCATION, true);
         return false;
      }
   }
   
   // all options validated
   return true;
}

}

void reportError(const Error& error, const ErrorLocation& location, bool forceStderr)
{
   std::string description = error.getProperty("description");

   // in some cases, we may need to force stderr to be written
   // for example, during installation on RedHat systems, stderr
   // is not properly hooked up to a terminal when checking configuration during post install scripts
   // which would cause error output to go only to syslog and be hidden from view during install
   if ((forceStderr || core::system::stderrIsTerminal()) && !description.empty())
   {
      std::cerr