#include "router.h"

Router::Router():
    table()
{

}

void Router::addRoute(const std::string& path, const Handler& handler) {
    auto result = table.emplace(path, handler);
    if (!result.second)
        std::cerr << "could'not add route " + path + " to the routing table";
}

void Router::route(const std::string& path, std::unique_ptr<Request> request) {
    auto itr = table.find(path);
    if (itr == table.end())
        return handleNotFound(path, std::move(request));

    try {
        bool result = itr->second(request.get());
        if (!result)
            handleInternalError(std::runtime_error("handler failed to handle the request"), std::move(request));
    } catch (const std::exception& e) {
        handleInternalError(e, std::move(request));
    }
}

void Router::handleNotFound(const std::string& path, std::unique_ptr<Request> request) {
    Response notFound(Response::Status::notFound);
    notFound.setBody(std::string("Path \"") + path + "\" was not found");
    notFound.replyTo(*request.get());
    std::cerr << "Not found: " << path << std::endl;
}

void Router::handleInternalError(const std::exception& exception, std::unique_ptr<Request> request) {
    Response error(Response::Status::internalError);
    error.setBody(std::string(exception.what()));
    error.replyTo(*request.get());
    std::cerr << "Internal error: " << exception.what() << std::endl;
}