#pragma once

#include "envoy/thread_local/thread_local.h"

#include "source/common/common/matchers.h"

#include "source/extensions/filters/common/lua/lua.h"

namespace Envoy {

namespace Extensions {

namespace StringMatcher {

namespace Lua {

// This class should not be used directly. It is exposed here for use in tests.

// Correct use requires use of a thread local slot.

class LuaStringMatcher : public Matchers::StringMatcher, public ThreadLocal::ThreadLocalObject {

public:

  LuaStringMatcher(const std::string& code);

  // ThreadLocal::ThreadLocalObject

  // To avoid hiding other implementations of match.

  using Matchers::StringMatcher::match;

  // Matchers::StringMatcher

  bool match(absl::string_view value) const override;

private:

  CSmartPtr<lua_State, lua_close> state_;

  int matcher_func_ref_{LUA_NOREF};

};

class LuaStringMatcherFactory : public Matchers::StringMatcherExtensionFactory {

public:

  Matchers::StringMatcherPtr

  createStringMatcher(const Protobuf::Message& config,

                      Server::Configuration::CommonFactoryContext& context) override;

  ProtobufTypes::MessagePtr createEmptyConfigProto() override;

};

} // namespace Lua

} // namespace StringMatcher

} // namespace Extensions

} // namespace Envoy