#include "KeyValueParser.h"
#include <boost/algorithm/string.hpp>
#include <vector>

#include "storm/utility/macros.h"
#include "storm/exceptions/InvalidArgumentException.h"

namespace storm {
    namespace parser {
        
        std::unordered_map<std::string, std::string> parseKeyValueString(std::string const& keyValueString) {
            std::unordered_map<std::string, std::string> keyValueMap;
            std::vector<std::string> definitions;
            boost::split(definitions, keyValueString, boost::is_any_of(","));
            for (auto& definition : definitions) {
                boost::trim(definition);
                
                // Check whether the token could be a legal constant definition.
                std::size_t positionOfAssignmentOperator = definition.find('=');
                STORM_LOG_THROW(positionOfAssignmentOperator != std::string::npos, storm::exceptions::InvalidArgumentException, "Illegal key value string: syntax error.");
                
                // Now extract the variable name and the value from the string.
                std::string key = definition.substr(0, positionOfAssignmentOperator);
                boost::trim(key);
                std::string value = definition.substr(positionOfAssignmentOperator + 1);
                boost::trim(value);
                keyValueMap.emplace(key, value);
            }
            return keyValueMap;
        }
    }
}