C++ Integration

C++ Oil Price API

Integrate real-time oil and commodity prices into your C++ applications. High-performance with modern C++17 features, async processing, and cross-platform support.

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Quick Start

1. Install Dependencies

# Ubuntu/Debian

sudo apt-get install libcurl4-openssl-dev nlohmann-json3-dev

# macOS with Homebrew

brew install curl nlohmann-json

# Build with CMake

mkdir build && cd build

cmake .. -DCMAKE_BUILD_TYPE=Release

make -j$(nproc)

2. C++ Features

Modern C++17 with RAII and smart pointers
Async processing with std::future
Cross-platform (Windows, Linux, macOS)

Basic Integration with libcurl

#include <iostream>
#include <string>
#include <map>
#include <memory>
#include <curl/curl.h>
#include <nlohmann/json.hpp>

using json = nlohmann::json;

class OilPriceAPI {
private:
    std::string api_key_;
    std::string base_url_;
    
    // Callback function for libcurl to write data
    static size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* userp) {
        userp->append((char*)contents, size * nmemb);
        return size * nmemb;
    }
    
    // Make HTTP GET request
    std::pair<long, std::string> makeRequest(const std::string& endpoint) {
        CURL* curl;
        CURLcode res;
        std::string response_body;
        long response_code = 0;
        
        curl = curl_easy_init();
        if (!curl) {
            throw std::runtime_error("Failed to initialize libcurl");
        }
        
        std::string url = base_url_ + endpoint;
        struct curl_slist* headers = nullptr;
        
        // Set headers
        std::string auth_header = "Authorization: Token " + api_key_;
        headers = curl_slist_append(headers, "Content-Type: application/json");
        headers = curl_slist_append(headers, auth_header.c_str());
        
        // Configure curl
        curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response_body);
        curl_easy_setopt(curl, CURLOPT_TIMEOUT, 10L);
        curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 10L);
        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2L);
        curl_easy_setopt(curl, CURLOPT_USERAGENT, "OilPriceAPI-CPP-Client/1.0");
        
        // Perform request
        res = curl_easy_perform(curl);
        
        if (res == CURLE_OK) {
            curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
        }
        
        // Cleanup
        curl_slist_free_all(headers);
        curl_easy_cleanup(curl);
        
        if (res != CURLE_OK) {
            throw std::runtime_error("HTTP request failed: " + std::string(curl_easy_strerror(res)));
        }
        
        return std::make_pair(response_code, response_body);
    }
    
public:
    OilPriceAPI(const std::string& api_key) 
        : api_key_(api_key), base_url_("https://api.oilpriceapi.com") {
        // Initialize libcurl globally (call once per application)
        curl_global_init(CURL_GLOBAL_DEFAULT);
    }
    
    ~OilPriceAPI() {
        // Cleanup libcurl globally
        curl_global_cleanup();
    }
    
    json getBrentPrice() {
        auto [status_code, response_body] = makeRequest("/prices");
        
        if (status_code != 200) {
            throw std::runtime_error("HTTP Error: " + std::to_string(status_code));
        }
        
        return json::parse(response_body);
    }
    
    json getCommodityHealth() {
        auto [status_code, response_body] = makeRequest("/health");
        
        if (status_code != 200) {
            throw std::runtime_error("HTTP Error: " + std::to_string(status_code));
        }
        
        return json::parse(response_body);
    }
    
    struct CommodityPrice {
        double price;
        std::string timestamp;
        std::string currency;
        std::string unit;
        
        CommodityPrice(double p, const std::string& ts, const std::string& curr, const std::string& u)
            : price(p), timestamp(ts), currency(curr), unit(u) {}
    };
    
    std::optional<CommodityPrice> getWTIPrice() {
        try {
            json health_data = getCommodityHealth();
            
            if (!health_data.contains("metrics") || 
                !health_data["metrics"].contains("commodity_health") ||
                !health_data["metrics"]["commodity_health"].contains("WTI_USD")) {
                return std::nullopt;
            }
            
            auto wti_data = health_data["metrics"]["commodity_health"]["WTI_USD"];
            
            if (!wti_data.contains("latest_price") || !wti_data.contains("last_update")) {
                return std::nullopt;
            }
            
            double latest_price = wti_data["latest_price"].get<double>();
            std::string last_update = wti_data["last_update"].get<std::string>();
            
            return CommodityPrice(
                latest_price / 100.0,  // Convert from cents
                last_update,
                "USD",
                "barrel"
            );
            
        } catch (const std::exception& e) {
            std::cerr << "Error getting WTI price: " << e.what() << std::endl;
            return std::nullopt;
        }
    }
    
    std::map<std::string, CommodityPrice> getAllCommodities() {
        std::map<std::string, CommodityPrice> commodities;
        
        try {
            // Get Brent from prices endpoint
            json brent_response = getBrentPrice();
            if (brent_response.contains("data")) {
                auto data = brent_response["data"];
                commodities.emplace("brent_crude", CommodityPrice(
                    data["price"].get<double>(),
                    data["timestamp"].get<std::string>(),
                    data["currency"].get<std::string>(),
                    "barrel"
                ));
            }
            
            // Get other commodities from health endpoint
            json health_response = getCommodityHealth();
            if (health_response.contains("metrics") && 
                health_response["metrics"].contains("commodity_health")) {
                
                auto commodity_health = health_response["metrics"]["commodity_health"];
                
                for (auto& [key, data] : commodity_health.items()) {
                    if (data.contains("latest_price") && data.contains("last_update")) {
                        double scale = isCurrencyPair(key) ? 10000.0 : 100.0;
                        double price = data["latest_price"].get<double>() / scale;
                        
                        std::string lowercase_key = key;
                        std::transform(lowercase_key.begin(), lowercase_key.end(), lowercase_key.begin(), ::tolower);
                        
                        commodities.emplace(lowercase_key, CommodityPrice(
                            price,
                            data["last_update"].get<std::string>(),
                            "USD",
                            getUnit(key)
                        ));
                    }
                }
            }
            
        } catch (const std::exception& e) {
            std::cerr << "Error getting commodities: " << e.what() << std::endl;
        }
        
        return commodities;
    }
    
private:
    bool isCurrencyPair(const std::string& commodity_key) {
        return commodity_key == "EUR_USD" || commodity_key == "GBP_USD";
    }
    
    std::string getUnit(const std::string& commodity_key) {
        static const std::map<std::string, std::string> units = {
            {"WTI_USD", "barrel"},
            {"NATURAL_GAS_USD", "MMBtu"},
            {"GOLD_USD", "ounce"},
            {"EUR_USD", "USD"},
            {"GBP_USD", "USD"}
        };
        
        auto it = units.find(commodity_key);
        return (it != units.end()) ? it->second : "unit";
    }
};

// Usage example
int main() {
    try {
        OilPriceAPI api("YOUR_API_KEY_HERE");
        
        std::cout << "=== Live Oil Prices ===" << std::endl;
        
        // Get Brent crude price
        json brent_data = api.getBrentPrice();
        if (brent_data.contains("data")) {
            auto data = brent_data["data"];
            std::cout << "Brent Crude: $" << data["price"].get<double>() << "/barrel" << std::endl;
        }
        
        // Get WTI price
        auto wti_price = api.getWTIPrice();
        if (wti_price) {
            std::cout << "WTI Crude: $" << std::fixed << std::setprecision(2) 
                      << wti_price->price << "/" << wti_price->unit << std::endl;
        }
        
        // Get all commodities
        auto all_commodities = api.getAllCommodities();
        for (const auto& [name, price] : all_commodities) {
            std::cout << name << ": $" << std::fixed << std::setprecision(2) 
                      << price.price << "/" << price.unit << std::endl;
        }
        
    } catch (const std::exception& e) {
        std::cerr << "Error: " << e.what() << std::endl;
        return 1;
    }
    
    return 0;
}

Modern C++17 with Async Processing

Enhanced version using modern C++ features, RAII, and async processing:

#include <iostream>
#include <string>
#include <map>
#include <future>
#include <memory>
#include <chrono>
#include <iomanip>
#include <sstream>
#include <curl/curl.h>
#include <nlohmann/json.hpp>

using json = nlohmann::json;
using namespace std::chrono_literals;

class ModernOilPriceAPI {
public:
    struct PriceData {
        double price;
        std::chrono::system_clock::time_point timestamp;
        std::string currency;
        std::string unit;
        
        PriceData(double p, const std::string& ts, const std::string& curr, const std::string& u)
            : price(p), currency(curr), unit(u) {
            // Parse ISO 8601 timestamp
            std::istringstream ss(ts);
            std::tm tm = {};
            ss >> std::get_time(&tm, "%Y-%m-%dT%H:%M:%S");
            timestamp = std::chrono::system_clock::from_time_t(std::mktime(&tm));
        }
        
        std::string getFormattedTimestamp() const {
            auto time_t = std::chrono::system_clock::to_time_t(timestamp);
            std::stringstream ss;
            ss << std::put_time(std::localtime(&time_t), "%Y-%m-%d %H:%M:%S");
            return ss.str();
        }
    };
    
    enum class CommodityType {
        BRENT_CRUDE,
        WTI_CRUDE,
        NATURAL_GAS,
        GOLD,
        EUR_USD,
        GBP_USD
    };

private:
    std::string api_key_;
    std::string base_url_;
    std::unique_ptr<CURL, decltype(&curl_easy_cleanup)> curl_;
    
    static size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* userp) {
        userp->append(static_cast<char*>(contents), size * nmemb);
        return size * nmemb;
    }
    
    std::future<json> makeAsyncRequest(const std::string& endpoint) {
        return std::async(std::launch::async, [this, endpoint]() -> json {
            return makeRequest(endpoint);
        });
    }
    
    json makeRequest(const std::string& endpoint) {
        if (!curl_) {
            throw std::runtime_error("CURL not initialized");
        }
        
        std::string response_body;
        std::string url = base_url_ + endpoint;
        
        struct curl_slist* headers = nullptr;
        std::string auth_header = "Authorization: Token " + api_key_;
        headers = curl_slist_append(headers, "Content-Type: application/json");
        headers = curl_slist_append(headers, auth_header.c_str());
        
        // Configure CURL
        curl_easy_setopt(curl_.get(), CURLOPT_URL, url.c_str());
        curl_easy_setopt(curl_.get(), CURLOPT_HTTPHEADER, headers);
        curl_easy_setopt(curl_.get(), CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl_.get(), CURLOPT_WRITEDATA, &response_body);
        curl_easy_setopt(curl_.get(), CURLOPT_TIMEOUT, 10L);
        curl_easy_setopt(curl_.get(), CURLOPT_CONNECTTIMEOUT, 5L);
        curl_easy_setopt(curl_.get(), CURLOPT_SSL_VERIFYPEER, 1L);
        curl_easy_setopt(curl_.get(), CURLOPT_SSL_VERIFYHOST, 2L);
        
        CURLcode res = curl_easy_perform(curl_.get());
        curl_slist_free_all(headers);
        
        if (res != CURLE_OK) {
            throw std::runtime_error("HTTP request failed: " + std::string(curl_easy_strerror(res)));
        }
        
        long response_code;
        curl_easy_getinfo(curl_.get(), CURLINFO_RESPONSE_CODE, &response_code);
        
        if (response_code != 200) {
            throw std::runtime_error("HTTP Error: " + std::to_string(response_code));
        }
        
        return json::parse(response_body);
    }

public:
    explicit ModernOilPriceAPI(const std::string& api_key) 
        : api_key_(api_key), 
          base_url_("https://api.oilpriceapi.com"),
          curl_(curl_easy_init(), curl_easy_cleanup) {
        
        if (!curl_) {
            throw std::runtime_error("Failed to initialize libcurl");
        }
        
        // Initialize libcurl globally (should be called once)
        curl_global_init(CURL_GLOBAL_DEFAULT);
    }
    
    ~ModernOilPriceAPI() {
        curl_global_cleanup();
    }
    
    // Async methods using std::future
    std::future<std::optional<PriceData>> getBrentPriceAsync() {
        return std::async(std::launch::async, [this]() -> std::optional<PriceData> {
            try {
                json response = makeRequest("/prices");
                if (response.contains("data")) {
                    auto data = response["data"];
                    return PriceData(
                        data["price"].get<double>(),
                        data["timestamp"].get<std::string>(),
                        data["currency"].get<std::string>(),
                        "barrel"
                    );
                }
                return std::nullopt;
            } catch (const std::exception& e) {
                std::cerr << "Error getting Brent price: " << e.what() << std::endl;
                return std::nullopt;
            }
        });
    }
    
    std::future<std::optional<PriceData>> getWTIPriceAsync() {
        return std::async(std::launch::async, [this]() -> std::optional<PriceData> {
            try {
                json health_data = makeRequest("/health");
                auto wti_data = health_data["metrics"]["commodity_health"]["WTI_USD"];
                
                if (wti_data.contains("latest_price") && wti_data.contains("last_update")) {
                    return PriceData(
                        wti_data["latest_price"].get<double>() / 100.0,
                        wti_data["last_update"].get<std::string>(),
                        "USD",
                        "barrel"
                    );
                }
                return std::nullopt;
            } catch (const std::exception& e) {
                std::cerr << "Error getting WTI price: " << e.what() << std::endl;
                return std::nullopt;
            }
        });
    }
    
    std::future<std::map<std::string, PriceData>> getAllCommoditiesAsync() {
        return std::async(std::launch::async, [this]() -> std::map<std::string, PriceData> {
            std::map<std::string, PriceData> commodities;
            
            try {
                // Launch both requests concurrently
                auto brent_future = makeAsyncRequest("/prices");
                auto health_future = makeAsyncRequest("/health");
                
                // Get Brent data
                try {
                    json brent_response = brent_future.get();
                    if (brent_response.contains("data")) {
                        auto data = brent_response["data"];
                        commodities.emplace("brent_crude", PriceData(
                            data["price"].get<double>(),
                            data["timestamp"].get<std::string>(),
                            data["currency"].get<std::string>(),
                            "barrel"
                        ));
                    }
                } catch (const std::exception& e) {
                    std::cerr << "Error processing Brent data: " << e.what() << std::endl;
                }
                
                // Get health data
                try {
                    json health_response = health_future.get();
                    if (health_response.contains("metrics") && 
                        health_response["metrics"].contains("commodity_health")) {
                        
                        auto commodity_health = health_response["metrics"]["commodity_health"];
                        
                        for (auto& [key, data] : commodity_health.items()) {
                            if (data.contains("latest_price") && data.contains("last_update")) {
                                double scale = isCurrencyPair(key) ? 10000.0 : 100.0;
                                double price = data["latest_price"].get<double>() / scale;
                                
                                std::string lowercase_key = key;
                                std::transform(lowercase_key.begin(), lowercase_key.end(), 
                                             lowercase_key.begin(), ::tolower);
                                
                                commodities.emplace(lowercase_key, PriceData(
                                    price,
                                    data["last_update"].get<std::string>(),
                                    "USD",
                                    getUnit(key)
                                ));
                            }
                        }
                    }
                } catch (const std::exception& e) {
                    std::cerr << "Error processing health data: " << e.what() << std::endl;
                }
                
            } catch (const std::exception& e) {
                std::cerr << "Error in getAllCommoditiesAsync: " << e.what() << std::endl;
            }
            
            return commodities;
        });
    }
    
    // Synchronous convenience methods
    std::optional<PriceData> getBrentPrice() {
        return getBrentPriceAsync().get();
    }
    
    std::optional<PriceData> getWTIPrice() {
        return getWTIPriceAsync().get();
    }
    
    std::map<std::string, PriceData> getAllCommodities() {
        return getAllCommoditiesAsync().get();
    }

private:
    bool isCurrencyPair(const std::string& commodity_key) const {
        return commodity_key == "EUR_USD" || commodity_key == "GBP_USD";
    }
    
    std::string getUnit(const std::string& commodity_key) const {
        static const std::unordered_map<std::string, std::string> units = {
            {"WTI_USD", "barrel"},
            {"NATURAL_GAS_USD", "MMBtu"},
            {"GOLD_USD", "ounce"},
            {"EUR_USD", "USD"},
            {"GBP_USD", "USD"}
        };
        
        auto it = units.find(commodity_key);
        return (it != units.end()) ? it->second : "unit";
    }
};

// Modern usage example with async processing
int main() {
    try {
        ModernOilPriceAPI api("YOUR_API_KEY_HERE");
        
        std::cout << "=== Fetching Live Prices Asynchronously ===" << std::endl;
        
        // Launch all requests asynchronously
        auto brent_future = api.getBrentPriceAsync();
        auto wti_future = api.getWTIPriceAsync();
        auto all_future = api.getAllCommoditiesAsync();
        
        // Wait for and process results
        auto brent_price = brent_future.get();
        if (brent_price) {
            std::cout << "Brent Crude: $" << std::fixed << std::setprecision(2) 
                      << brent_price->price << "/" << brent_price->unit 
                      << " (updated: " << brent_price->getFormattedTimestamp() << ")" << std::endl;
        }
        
        auto wti_price = wti_future.get();
        if (wti_price) {
            std::cout << "WTI Crude: $" << std::fixed << std::setprecision(2) 
                      << wti_price->price << "/" << wti_price->unit 
                      << " (updated: " << wti_price->getFormattedTimestamp() << ")" << std::endl;
        }
        
        std::cout << "\n=== All Commodities ===" << std::endl;
        auto all_commodities = all_future.get();
        for (const auto& [name, price] : all_commodities) {
            std::cout << name << ": $" << std::fixed << std::setprecision(4) 
                      << price.price << "/" << price.unit << std::endl;
        }
        
    } catch (const std::exception& e) {
        std::cerr << "Error: " << e.what() << std::endl;
        return 1;
    }
    
    return 0;
}

Using Microsoft cpprestsdk

Alternative implementation using Microsoft's cpprestsdk for modern async HTTP:

// Using Microsoft's cpprestsdk for modern C++ HTTP client
#include <cpprest/http_client.h>
#include <cpprest/filestream.h>
#include <cpprest/json.h>
#include <iostream>
#include <memory>
#include <string>
#include <map>

using namespace web;
using namespace web::http;
using namespace web::http::client;

class CppRestOilPriceAPI {
private:
    std::string api_key_;
    std::unique_ptr<http_client> client_;
    
public:
    explicit CppRestOilPriceAPI(const std::string& api_key) 
        : api_key_(api_key) {
        
        http_client_config config;
        config.set_timeout(std::chrono::seconds(10));
        
        client_ = std::make_unique<http_client>(
            U("https://api.oilpriceapi.com"), 
            config
        );
    }
    
    pplx::task<json::value> getBrentPriceAsync() {
        http_request request(methods::GET);
        request.headers().add(U("Authorization"), U("Token " + api_key_));
        request.headers().add(U("Content-Type"), U("application/json"));
        
        return client_->request(request, U("/prices"))
            .then([](http_response response) -> pplx::task<json::value> {
                if (response.status_code() == status_codes::OK) {
                    return response.extract_json();
                }
                throw std::runtime_error("HTTP Error: " + std::to_string(response.status_code()));
            });
    }
    
    pplx::task<json::value> getCommodityHealthAsync() {
        http_request request(methods::GET);
        request.headers().add(U("Authorization"), U("Token " + api_key_));
        request.headers().add(U("Content-Type"), U("application/json"));
        
        return client_->request(request, U("/health"))
            .then([](http_response response) -> pplx::task<json::value> {
                if (response.status_code() == status_codes::OK) {
                    return response.extract_json();
                }
                throw std::runtime_error("HTTP Error: " + std::to_string(response.status_code()));
            });
    }
    
    pplx::task<std::map<std::string, double>> getAllPricesAsync() {
        // Launch both requests concurrently
        auto brent_task = getBrentPriceAsync();
        auto health_task = getCommodityHealthAsync();
        
        return pplx::when_all(brent_task, health_task)
            .then([](std::vector<json::value> results) -> std::map<std::string, double> {
                std::map<std::string, double> prices;
                
                try {
                    // Process Brent data (results[0])
                    if (results[0].has_field(U("data"))) {
                        auto data = results[0][U("data")];
                        if (data.has_field(U("price"))) {
                            prices["brent_crude"] = data[U("price")].as_double();
                        }
                    }
                    
                    // Process health data (results[1])
                    if (results[1].has_field(U("metrics"))) {
                        auto metrics = results[1][U("metrics")];
                        if (metrics.has_field(U("commodity_health"))) {
                            auto commodity_health = metrics[U("commodity_health")];
                            
                            for (auto& pair : commodity_health.as_object()) {
                                auto key = utility::conversions::to_utf8string(pair.first);
                                auto data = pair.second;
                                
                                if (data.has_field(U("latest_price"))) {
                                    double scale = (key == "EUR_USD" || key == "GBP_USD") ? 10000.0 : 100.0;
                                    double price = data[U("latest_price")].as_double() / scale;
                                    
                                    std::transform(key.begin(), key.end(), key.begin(), ::tolower);
                                    prices[key] = price;
                                }
                            }
                        }
                    }
                } catch (const std::exception& e) {
                    std::cerr << "Error processing price data: " << e.what() << std::endl;
                }
                
                return prices;
            });
    }
};

// Usage example with cpprestsdk
void demonstrateCppRest() {
    try {
        CppRestOilPriceAPI api("YOUR_API_KEY_HERE");
        
        std::cout << "=== Using cpprestsdk for async HTTP ===" << std::endl;
        
        // Get all prices asynchronously
        api.getAllPricesAsync()
            .then([](std::map<std::string, double> prices) {
                std::cout << "\n=== Live Commodity Prices ===" << std::endl;
                
                for (const auto& [name, price] : prices) {
                    std::cout << name << ": $" << std::fixed << std::setprecision(2) 
                              << price << std::endl;
                }
            })
            .then([](pplx::task<void> previous_task) {
                try {
                    previous_task.wait();
                } catch (const std::exception& e) {
                    std::cerr << "Error: " << e.what() << std::endl;
                }
            })
            .wait();
            
    } catch (const std::exception& e) {
        std::cerr << "Error: " << e.what() << std::endl;
    }
}

CMake Build Configuration

Complete CMakeLists.txt for building your Oil Price API client:

# CMakeLists.txt for Oil Price API C++ client

cmake_minimum_required(VERSION 3.15)
project(OilPriceAPI VERSION 1.0.0 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Find required packages
find_package(PkgConfig REQUIRED)
find_package(nlohmann_json 3.11.0 REQUIRED)

# Find libcurl
pkg_check_modules(CURL REQUIRED libcurl)

# Optional: Find cpprestsdk
find_package(cpprestsdk QUIET)

# Create library for Oil Price API client
add_library(oilpriceapi STATIC
    src/oil_price_api.cpp
    src/oil_price_api.h
)

target_link_libraries(oilpriceapi
    PRIVATE
        nlohmann_json::nlohmann_json
        ${CURL_LIBRARIES}
)

target_include_directories(oilpriceapi
    PUBLIC
        ${CMAKE_CURRENT_SOURCE_DIR}/include
    PRIVATE
        ${CURL_INCLUDE_DIRS}
)

target_compile_options(oilpriceapi
    PRIVATE
        ${CURL_CFLAGS_OTHER}
)

# Create executable examples
add_executable(basic_example examples/basic_example.cpp)
target_link_libraries(basic_example oilpriceapi)

add_executable(modern_example examples/modern_example.cpp)
target_link_libraries(modern_example oilpriceapi)

# Optional: cpprestsdk example
if(cpprestsdk_FOUND)
    add_executable(cpprest_example examples/cpprest_example.cpp)
    target_link_libraries(cpprest_example 
        cpprestsdk::cpprest
        nlohmann_json::nlohmann_json
    )
endif()

# Installation
install(TARGETS oilpriceapi
    LIBRARY DESTINATION lib
    ARCHIVE DESTINATION lib
    RUNTIME DESTINATION bin
)

install(DIRECTORY include/ DESTINATION include)

# Package configuration
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
    "${CMAKE_CURRENT_BINARY_DIR}/OilPriceAPIConfigVersion.cmake"
    VERSION ${PROJECT_VERSION}
    COMPATIBILITY AnyNewerVersion
)

export(TARGETS oilpriceapi
    FILE "${CMAKE_CURRENT_BINARY_DIR}/OilPriceAPITargets.cmake"
)

# Build instructions:
# mkdir build && cd build
# cmake .. -DCMAKE_BUILD_TYPE=Release
# make -j$(nproc)

Available Commodities

Brent Crude Oil

North Sea Brent crude oil, the global benchmark for oil pricing representing ~60% of internationally traded crude oil.

API Field: BRENT_CRUDE_USD

Unit: barrel

Endpoint: /prices

WTI Crude Oil

West Texas Intermediate crude oil, the primary benchmark for North American oil markets and NYMEX futures.

API Field: WTI_USD

Unit: barrel

Endpoint: /health

Dubai Crude Oil

Dubai crude oil benchmark for Middle Eastern crude oil pricing and Asian markets.

API Field: DUBAI_CRUDE_USD

Unit: barrel

Endpoint: /health

Natural Gas

NYMEX Henry Hub natural gas futures, the primary pricing benchmark for North American natural gas markets.

API Field: NATURAL_GAS_USD

Unit: MMBtu

Endpoint: /health

Natural Gas (UK)

UK natural gas pricing in British pence per therm.

API Field: NATURAL_GAS_GBP

Unit: pence/therm

Endpoint: /health

Dutch TTF Gas

Dutch Title Transfer Facility (TTF) natural gas futures, the European gas pricing benchmark.

API Field: DUTCH_TTF_EUR

Unit: EUR/MWh

Endpoint: /health

Gasoline RBOB

Reformulated Blendstock for Oxygenate Blending (RBOB) gasoline futures.

API Field: GASOLINE_RBOB_USD

Unit: gallon

Endpoint: /health

Heating Oil

No. 2 heating oil futures, a key refined petroleum product for heating and industrial use.

API Field: HEATING_OIL_USD

Unit: gallon

Endpoint: /health

Coal

Coal futures pricing for thermal coal used in power generation.

API Field: COAL_USD

Unit: ton

Endpoint: /health

Gold

Gold futures pricing, a key precious metal and safe-haven asset.

API Field: GOLD_USD

Unit: ounce

Endpoint: /health

EUR/USD

Euro to US Dollar exchange rate, the most traded currency pair globally.

API Field: EUR_USD

Unit: USD

Endpoint: /health

GBP/USD

British Pound to US Dollar exchange rate, also known as "Cable".

API Field: GBP_USD

Unit: USD

Endpoint: /health

C++ Best Practices

Memory Management

Use RAII and smart pointers
Proper cleanup of libcurl resources
Exception safety with RAII

Performance

Use async processing for concurrent requests
Reuse CURL handles for multiple requests
Implement connection pooling

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