#include <fstream>

#include "settings.hpp"
#include "management/logger.hpp"

namespace smtp::file
{
	//
	//Constructors
	//
    Settings::Settings( std::string const& path_file, checker::RegistratorSettings const& registrator_errors )
        : mPathFile( path_file )
		, mRegistratorErrors( registrator_errors )
    {

    }

	//
	//Public methods
	//
    manage::SettingsFields Settings::Read() const
    {
        auto parsed_store = GetParsedStore();
        return converter::Full{}.Convert( parsed_store );
    }

    bool Settings::Write( manage::SettingsFields const& settings_fields ) const
    {
        auto parsed_data = converter::Full{}.Convert( settings_fields );
		return mRegistratorErrors.Check( parsed_data ) && SetParsedData( parsed_data );
    }

	//
	//Private methods
	//
	manage::SettingsFileDataType Settings::GetParsedStore() const
    {
        std::ifstream settings_file{ mPathFile, std::fstream::in };
        if ( !settings_file.is_open() )
        {
            manage::Logger::LogError( "Unable to open file to read " + mPathFile );
            return {};
        }
		auto result = GetDataFromFile( settings_file );

		settings_file.close();
		return mRegistratorErrors.Check(result) ? result : manage::SettingsFileDataType{};
    }

	manage::SettingsFileDataType Settings::GetDataFromFile( std::ifstream& settings_file ) const
	{
		std::string line{};
		manage::SettingsFileDataType result;

		while ( std::getline( settings_file, line ) )
		{
			auto parsed_data = parser::Settings{}.Parse( line );
			result.insert( parsed_data );
		}
		return result;
	}

	bool Settings::SetParsedData( manage::SettingsFileDataType const& parsed_data ) const
    {
        std::ofstream settings_file{ mPathFile, std::fstream::out | std::fstream::trunc };
        if ( !settings_file.is_open() )
        {
            manage::Logger::LogError( "Unable to open file to write " + mPathFile );
            return false;
        }
        for( const auto& data : parsed_data )
        {
            auto line = BuildParam( data );
            settings_file << line << "\n";
        }
        settings_file.close();
        return true;
    }

    std::string Settings::BuildParam( std::pair<std::string, std::string> const& data) const
    {
        std::string result;
        result += data.first;
        result += '=';
        result += data.second;
        return result;
    }
}