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// Copyright Maarten L. Hekkelman, 2022-2026
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// In this example we don't want to use rsrc based templates
#undef WEBAPP_USES_RESOURCES
#define WEBAPP_USES_RESOURCES 0
#include <zeep/http/controller.hpp>
#include <zeep/http/html-controller.hpp>
#include <zeep/http/reply.hpp>
#include <zeep/http/server.hpp>
#include <zeep/http/template-processor.hpp>
#include <zeem/serialize.hpp>
#include <cstdint>
#include <exception>
#include <iostream>
#include <stdexcept>
#include <string>
#include <vector>
//[ cart_items
struct Item
{
std::string name;
uint32_t count;
template <typename Archive>
void serialize(Archive &ar, uint64_t /*version*/)
{
// clang-format off
ar & zeem::name_value_pair("name", name)
& zeem::name_value_pair("count", count);
// clang-format on
}
};
struct Cart
{
int id;
std::string client;
std::vector<Item> items;
template <typename Archive>
void serialize(Archive &ar, uint64_t /*version*/)
{
// clang-format off
ar & zeem::name_value_pair("id", id)
& zeem::name_value_pair("client", client)
& zeem::name_value_pair("items", items);
// clang-format on
}
};
//]
//[ shop_rest_controller
class shop_rest_controller : public zeep::http::controller
{
public:
shop_rest_controller()
: zeep::http::controller("/cart")
{
map_post_request("", &shop_rest_controller::create_cart, "client");
map_get_request("{id}", &shop_rest_controller::get_cart, "id");
map_post_request("{id}/item", &shop_rest_controller::add_cart_item, "id", "name");
map_delete_request("{id}/item", &shop_rest_controller::delete_cart_item, "id", "name");
}
int create_cart(const std::string &client)
{
int cartID = sNextCartID++;
m_carts.push_back({ .id = cartID, .client = client, .items = {} });
return cartID;
}
Cart &get_cart(int cartID)
{
auto oi = std::ranges::find_if(m_carts, [&](auto &o)
{ return o.id == cartID; });
if (oi == m_carts.end())
throw std::invalid_argument("No such cart");
return *oi;
}
Cart add_cart_item(int cartID, const std::string &item)
{
Cart &cart = get_cart(cartID);
auto ii = std::ranges::find_if(cart.items, [&](auto &i)
{ return i.name == item; });
if (ii == cart.items.end())
cart.items.push_back({ item, 1 });
else
ii->count += 1;
return cart;
}
Cart delete_cart_item(int cartID, const std::string &item)
{
Cart &cart = get_cart(cartID);
auto ii = std::ranges::find_if(cart.items, [&](auto &i)
{ return i.name == item; });
if (ii != cart.items.end())
{
if (--ii->count == 0)
cart.items.erase(ii);
}
return cart;
}
private:
static int sNextCartID;
std::vector<Cart> m_carts;
};
//]
int shop_rest_controller::sNextCartID = 1;
//[ shop_html_controller
class shop_html_controller : public zeep::http::html_controller
{
public:
shop_html_controller()
{
map_get("", &shop_html_controller::handle_index);
map_get_file("{css,scripts}/");
}
zeep::http::reply handle_index(const zeep::http::scope &scope)
{
return get_template_processor().create_reply_from_template("shop.xhtml", scope);
}
};
//]
//[ shop_main
int main()
{
try
{
/* Use the server constructor that takes the path to a docroot so it will construct a template processor */
zeep::http::server srv("docroot");
srv.add_controller(new shop_html_controller());
srv.add_controller(new shop_rest_controller());
srv.bind("::", 8080);
// Note that the rest controller above is not thread safe!
srv.run(1);
}
catch (const std::exception &ex)
{
std::cerr << ex.what() << '\n';
}
return 0;
}
//]
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