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#pragma once
#include "baserule.hpp"
#include "dynamicrule.hpp"
#include "ruleparametertraits.hpp"
#include <boost/beast/http/verb.hpp>
#include <memory>
#include <string>
#include <vector>
namespace crow
{
template <typename... Args>
class TaggedRule :
public BaseRule,
public RuleParameterTraits<TaggedRule<Args...>>
{
public:
using self_t = TaggedRule<Args...>;
explicit TaggedRule(const std::string& ruleIn) : BaseRule(ruleIn) {}
void validate() override
{
if (!handler)
{
throw std::runtime_error("no handler for url " + rule);
}
}
template <typename Func>
void operator()(Func&& f)
{
static_assert(
std::is_invocable_v<Func, crow::Request,
std::shared_ptr<bmcweb::AsyncResp>&, Args...>,
"Handler type is mismatched with URL parameters");
static_assert(
std::is_same_v<
void, std::invoke_result_t<Func, crow::Request,
std::shared_ptr<bmcweb::AsyncResp>&,
Args...>>,
"Handler function with response argument should have void return type");
handler = std::forward<Func>(f);
}
void handle(const Request& req,
const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
const std::vector<std::string>& params) override
{
if constexpr (sizeof...(Args) == 0)
{
handler(req, asyncResp);
}
else if constexpr (sizeof...(Args) == 1)
{
handler(req, asyncResp, params[0]);
}
else if constexpr (sizeof...(Args) == 2)
{
handler(req, asyncResp, params[0], params[1]);
}
else if constexpr (sizeof...(Args) == 3)
{
handler(req, asyncResp, params[0], params[1], params[2]);
}
else if constexpr (sizeof...(Args) == 4)
{
handler(req, asyncResp, params[0], params[1], params[2], params[3]);
}
else if constexpr (sizeof...(Args) == 5)
{
handler(req, asyncResp, params[0], params[1], params[2], params[3],
params[4]);
}
static_assert(sizeof...(Args) <= 5, "More args than are supported");
}
private:
std::function<void(const crow::Request&,
const std::shared_ptr<bmcweb::AsyncResp>&, Args...)>
handler;
};
} // namespace crow
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