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#pragma once
#include <cstdint>
#include <utility>
#include <string>
#include <tuple>
#include "http_response.h"
namespace flask
{
class Rule
{
public:
explicit Rule(std::string&& rule)
: rule_(std::move(rule))
{
}
template <typename Func>
void operator()(Func&& f)
{
handler_ = [f = std::move(f)]{
return response(f());
};
}
template <typename Func>
void operator()(std::string&& name, Func&& f)
{
name_ = std::move(name);
handler_ = [f = std::move(f)]{
return response(f());
};
}
bool match(const request& req)
{
// FIXME need url parsing
return req.url == rule_;
}
Rule& name(const std::string& name)
{
name_ = name;
return *this;
}
void validate()
{
if (!handler_)
{
throw std::runtime_error("no handler for url " + rule_);
}
}
response handle(const request&)
{
return handler_();
}
private:
std::string rule_;
std::string name_;
std::function<response()> handler_;
};
class Router
{
public:
Rule& new_rule(std::string&& rule)
{
rules_.emplace_back(std::move(rule));
return rules_.back();
}
void validate()
{
for(auto& rule:rules_)
{
rule.validate();
}
}
response handle(const request& req)
{
for(auto& rule : rules_)
{
if (rule.match(req))
{
return rule.handle(req);
}
}
return response(404);
}
private:
std::vector<Rule> rules_;
};
}
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