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// Copyright 2009-present MongoDB, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <chrono>
#include <bsoncxx/builder/list.hpp>
#include <bsoncxx/types.hpp>
#include <bsoncxx/types/bson_value/value.hpp>
#include <examples/macros.hh>
using namespace bsoncxx;
int EXAMPLES_CDECL main() {
using namespace bsoncxx::builder;
//
// bsoncxx::builder::list, bsoncxx::builder::document, and bsoncxx::builder::array provides a
// JSON-like interface for creating BSON objects.
//
// builder::document builds an empty BSON document
builder::document doc = {};
// builder::array builds an empty BSON array
builder::array arr = {};
//
// We can append values to a document using an initializer list of key-value pairs.
// { "hello" : "world" }
//
doc = {"hello", "world"};
//
// Each document key must be a string type.
//
// {
// "c-style" : "with value",
// "basic string" : "with value"
// }
//
doc = {"c-style", "with value", std::string("basic string"), "with value"};
//
// Each document value must be a bson_value::value or implicitly convertible to one.
//
// {
// "BSON boolean value" : false,
// "BSON 32-bit signed integer value" : -123,
// "BSON date value" : { "$date" : 123456789 },
// "BSON Decimal128 value" : { "$numberDecimal" : "1.844674407370955161800E-6155" },
// "BSON regex value with options" : { "$regex" : "any", "$options" : "imsx" }
// }
//
// clang-format off
doc = {"BSON boolean value", false,
"BSON 32-bit signed integer value", -123,
"BSON date value", std::chrono::milliseconds(123456789),
"BSON Decimal128 value", decimal128{100, 200},
"BSON regex value with options", types::bson_value::value("regex", "imsx" /* opts */)};
// clang-format on
//
// Nested documents can be added in-place.
//
// { "Answers" :
// { "Everything" :
// { "The Universe" : { "Life" : 42 } }
// }
// }
//
doc = {"Answers", {"Everything", {"The Universe", {"Life", 42}}}};
//
// Each array element must be bson_value::value or implicitly convertible to one.
//
// { "0" : false,
// "1" : -123,
// "2" : { "$date" : 123456789 },
// "3" : { "$numberDecimal" : "1.844674407370955161800E-6155" },
// "4" : { "$regex" : "any", "$options" : "imsx" }
// }
//
arr = {false,
-123,
std::chrono::milliseconds(123456789),
decimal128{100, 200},
types::bson_value::value("regex", "imsx" /* opts */)};
//
// The list builder will create a BSON document, if possible. Otherwise, it will create a BSON
// array. A document is possible if:
// 1. The initializer list's size is even; this implies a list of
// key-value pairs or an empty document if the size is zero.
// 2. Each 'key' is a string type. In a list of key-value pairs, the 'key' is every other
// element starting at the 0th element.
//
// BSON document
// { "pi" : 3.1415899999999998826, "e" : 2.7182800000000000296 }
builder::list lst = {"pi", 3.14159, "e", 2.71828};
// BSON array
// { "0" : "Numbers", "1" : 3.1415899999999998826, "2" : 2.7182800000000000296 }
lst = {"Numbers", 3.14159, 2.71828};
//
// BSON document
//
// { "this" : { "is" : 10 },
// "valid" : { "BSON" : "document" }
// "with" : [ 1, "nested", "array" ] }
lst = {"this", {"is", 0xA}, "valid", {"BSON", "document"}, "with", {1, "nested", "array"}};
//
// BSON array
//
// { "0" : "this",
// "1" : { "will" : "be" },
// "2" : "an",
// "3" : "array",
// "4" : [ 1, 2, 3] }
lst = {"this", {"will", "be"}, "an", "array", {1, 2, 3}};
}
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