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#pragma once
#include "baserule.hpp"
#include "ruleparametertraits.hpp"
#include "websocket.hpp"
#include <boost/beast/http/verb.hpp>
#include <functional>
#include <limits>
#include <string>
#include <type_traits>
namespace crow
{
namespace detail
{
template <typename Func, typename... ArgsWrapped>
struct Wrapped
{};
template <typename Func, typename... ArgsWrapped>
struct Wrapped<Func, std::tuple<ArgsWrapped...>>
{
explicit Wrapped(Func f) : handler(std::move(f)) {}
std::function<void(ArgsWrapped...)> handler;
void operator()(const Request& req,
const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
const std::vector<std::string>& params)
{
if constexpr (sizeof...(ArgsWrapped) == 2)
{
handler(req, asyncResp);
}
else if constexpr (sizeof...(ArgsWrapped) == 3)
{
handler(req, asyncResp, params[0]);
}
else if constexpr (sizeof...(ArgsWrapped) == 4)
{
handler(req, asyncResp, params[0], params[1]);
}
else if constexpr (sizeof...(ArgsWrapped) == 5)
{
handler(req, asyncResp, params[0], params[1], params[2]);
}
else if constexpr (sizeof...(ArgsWrapped) == 6)
{
handler(req, asyncResp, params[0], params[1], params[2], params[3]);
}
else if constexpr (sizeof...(ArgsWrapped) == 7)
{
handler(req, asyncResp, params[0], params[1], params[2], params[3],
params[4]);
}
}
};
} // namespace detail
class DynamicRule : public BaseRule, public RuleParameterTraits<DynamicRule>
{
public:
explicit DynamicRule(const std::string& ruleIn) : BaseRule(ruleIn) {}
void validate() override
{
if (!erasedHandler)
{
throw std::runtime_error("no handler for url " + rule);
}
}
void handle(const Request& req,
const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
const std::vector<std::string>& params) override
{
erasedHandler(req, asyncResp, params);
}
template <typename Func>
void operator()(Func f)
{
using boost::callable_traits::args_t;
erasedHandler = detail::Wrapped<Func, args_t<Func>>(std::move(f));
}
private:
std::function<void(const Request&,
const std::shared_ptr<bmcweb::AsyncResp>&,
const std::vector<std::string>&)>
erasedHandler;
};
} // namespace crow
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