#include "jsoncons/json.hpp"

// For convenience
using jsoncons::json;

// Construct a book object
json book1;

book1["category"] = "Fiction";
book1["title"] = "A Wild Sheep Chase: A Novel";
book1["author"] = "Haruki Murakami";
book1["date"] = "2002-04-09";
book1["price"] = 9.01;
book1["isbn"] = "037571894X";  

// Construct another in a different way
json book2;

book2.set("category", "History");
book2.set("title", "Charlie Wilson's War");
book2.set("author", "George Crile");
book2.set("date", "2007-11-06");
book2.set("price", 10.50);
book2.set("isbn", "0802143415");  

// Construct a third from a string
json book3 = json::parse(R"(
{
    "category" : "Fiction",
    "title" : "Pulp",
    "author" : "Charles Bukowski",
    "date" : "2004-07-08",
    "price" : 22.48,
    "isbn" : "1852272007"  
}
)");

// Construct a booklist array
json booklist = json::array();

// For efficiency, reserve memory, to avoid reallocations
booklist.reserve(3);

// For efficency, tell jsoncons to move the contents 
// of the three book objects into the array
booklist.add(std::move(book1));    
booklist.add(std::move(book2));    
booklist.add(std::move(book3));    

// See what's left of book1, 2 and 3 (expect null, null, null)
std::cout << book1 << "," << book2 << "," << book3 << std::endl;

//Loop through the booklist elements using a range-based for loop    
for(auto book : booklist.elements())
{
std::cout << book["title"].as<std::string>()
          << ","
	  << book["price"].as<double>() << std::endl;
}

// Serialize the booklist to a file
std::ofstream os("booklist.json");
os << pretty_print(booklist);

[
    {
        "author":"Haruki Murakami",
        "category":"Fiction",
        "date":"2002-04-09",
        "isbn":"037571894X",
        "price":9.01,
        "title":"A Wild Sheep Chase: A Novel"
    },
    {
        "author":"George Crile",
        "category":"History",
        "date":"2007-11-06",
        "isbn":"0802143415",
        "price":10.5,
        "title":"Charlie Wilson's War"
    },
    {
        "author":"Charles Bukowski",
        "category":"Fiction",
        "date":"2004-07-08",
        "isbn":"1852272007",
        "price":22.48,
        "title":"Pulp"
    }
]

#include <fstream>
#include "jsoncons/json.hpp"
#include "jsoncons_ext/jsonpath/json_query.hpp"

// For convenience
using jsoncons::json;
using jsoncons::jsonpath::json_query;

// Deserialize the booklist
std::ifstream is("booklist.json");
json booklist2;
is >> booklist2;

// Select the authors of books that cost less than $12
// (using JsonPath)
json result = json_query(booklist,"$[*][?(@.price < 12)].author");

std::cout << pretty_print(result) << std::endl;

["Haruki Murakami","George Crile"]

#include "jsoncons/json.hpp"

// For convenience
using jsoncons::wjson;

// Construct a book object
wjson book1;

book1[L"category"] = L"Fiction";
book1[L"title"] = L"A Wild Sheep Chase: A Novel";
book1[L"author"] = L"Haruki Murakami";
book1[L"date"] = L"2002-04-09";
book1[L"price"] = 9.01;
book1[L"isbn"] = L"037571894X";

// Construct another in a different way
wjson book2;

book2.set(L"category", L"History");
book2.set(L"title", L"Charlie Wilson's War");
book2.set(L"author", L"George Crile");
book2.set(L"date", L"2007-11-06");
book2.set(L"price", 10.50);
book2.set(L"isbn", L"0802143415");

// Construct a third from a string
wjson book3 = wjson::parse(LR"(
{
    "category" : "Fiction",
    "title" : "Pulp",
    "author" : "Charles Bukowski",
    "date" : "2004-07-08",
    "price" : 22.48,
    "isbn" : "1852272007"  
}
)");

// Construct a booklist array
wjson booklist = wjson::array();

// For efficiency, reserve memory, to avoid reallocations
booklist.reserve(3);

// For efficency, tell jsoncons to move the contents 
// of the three book objects into the array
booklist.add(std::move(book1));
booklist.add(std::move(book2));
booklist.add(std::move(book3));

// See what's left of book1, 2 and 3 (expect null, null, null)
std::wcout << book1 << L"," << book2 << L"," << book3 << std::endl;

//Loop through the booklist elements using a range-based for loop    
for (auto book : booklist.elements())
{
	std::wcout << book[L"title"].as<std::wstring>()
		<< L","
		<< book[L"price"].as<double>() << std::endl;
}

// Serialize the booklist to a file
std::wofstream os(L"booklist2.json");
os << pretty_print(booklist);

[
    {
        "author":"Haruki Murakami",
        "category":"Fiction",
        "date":"2002-04-09",
        "isbn":"037571894X",
        "price":9.01,
        "title":"A Wild Sheep Chase: A Novel"
    },
    {
        "author":"George Crile",
        "category":"History",
        "date":"2007-11-06",
        "isbn":"0802143415",
        "price":10.5,
        "title":"Charlie Wilson's War"
    },
    {
        "author":"Charles Bukowski",
        "category":"Fiction",
        "date":"2004-07-08",
        "isbn":"1852272007",
        "price":22.48,
        "title":"Pulp"
    }
]

#include <fstream>
#include "jsoncons/json.hpp"
#include "jsoncons_ext/jsonpath/json_query.hpp"

// For convenience
using jsoncons::wjson;
using jsoncons::jsonpath::json_query;

// Deserialize the booklist
std::wifstream is("booklist2.json");
wjson booklist2;
is >> booklist2;

// Select the authors of books that cost less than $12
// (using JsonPath)
wjson result = json_query(booklist, L"$[*][?(@.price < 12)].author");

std::wcout << pretty_print(result) << std::endl;

["Haruki Murakami","George Crile"]