1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
// In this example we don't want to use rsrc based templates
#undef WEBAPP_USES_RESOURCES
#include <zeep/http/rest-controller.hpp>
#include <zeep/http/html-controller.hpp>
//[ cart_items
struct Item
{
std::string name;
uint32_t count;
template<typename Archive>
void serialize(Archive& ar, unsigned long version)
{
ar & zeep::make_nvp("name", name)
& zeep::make_nvp("count", count);
}
};
struct Cart
{
int id;
std::string client;
std::vector<Item> items;
template<typename Archive>
void serialize(Archive& ar, unsigned long version)
{
ar & zeep::make_nvp("id", id)
& zeep::make_nvp("client", client)
& zeep::make_nvp("items", items);
}
};
//]
//[ shop_rest_controller
class shop_rest_controller : public zeep::http::rest_controller
{
public:
shop_rest_controller()
: zeep::http::rest_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({ cartID, client });
return cartID;
}
Cart& get_cart(int cartID)
{
auto oi = std::find_if(m_carts.begin(), m_carts.end(), [&](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::find_if(cart.items.begin(), cart.items.end(), [&](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::find_if(cart.items.begin(), cart.items.end(), [&](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()
{
mount("", &shop_html_controller::handle_index);
mount("{css,scripts}/", &shop_html_controller::handle_file);
}
void handle_index(const zeep::http::request& req, const zeep::http::scope& scope, zeep::http::reply& rep)
{
get_template_processor().create_reply_from_template("shop.xhtml", scope, rep);
}
};
//]
//[ shop_main
int main()
{
/*<< 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);
return 0;
}
//]
|
