Satellite_Updates.cpp

#include <iostream>
#include <vector>
#include <string>
#include <cmath>
#include <fstream>
#include <curl/curl.h>
#include <jsoncpp/json/json.h>
#include <armadillo>

// Step 1: Retrieve satellite data from the API
std::string satellite_data_api_url = "API_URL_HERE";
std::string response;

// Function to handle the HTTP response
size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* response)
{
    size_t totalSize = size * nmemb;
    response->append(static_cast<char*>(contents), totalSize);
    return totalSize;
}

// Perform HTTP GET request
CURL* curl = curl_easy_init();
if (curl)
{
    curl_easy_setopt(curl, CURLOPT_URL, satellite_data_api_url.c_str());
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
    curl_easy_perform(curl);
    curl_easy_cleanup(curl);
}

// Parse the JSON response
Json::Value satellite_data;
Json::CharReaderBuilder jsonBuilder;
std::istringstream jsonStream(response);
std::string error;
if (!Json::parseFromStream(jsonBuilder, jsonStream, &satellite_data, &error))
{
    std::cerr << "Error parsing JSON: " << error << std::endl;
    return 1;
}

// Step 2: Parse TLE data using skyfield
std::vector<std::pair<std::string, std::string>> tle_data;

for (const auto& satellite : satellite_data)
{
    std::string line1 = satellite["tle_line1"].asString();
    std::string line2 = satellite["tle_line2"].asString();
    tle_data.push_back(std::make_pair(line1, line2));
}

// Step 3: Visualize satellite orbits in 3D
// Define the necessary variables and functions for plotting in C++
// You can use a suitable plotting library for C++ like Gnuplot, ROOT, etc.

// Step 4: Map satellites to countries using the satellite database API
std::string satellite_db_api_url = "SATELLITE_DB_API_URL_HERE";

// Perform HTTP GET request to the satellite database API
std::string satellite_db_response;

curl = curl_easy_init();
if (curl)
{
    curl_easy_setopt(curl, CURLOPT_URL, satellite_db_api_url.c_str());
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &satellite_db_response);
    curl_easy_perform(curl);
    curl_easy_cleanup(curl);
}

// Parse the JSON response from the satellite database API
Json::Value satellite_db;
jsonStream.str(satellite_db_response);

if (!Json::parseFromStream(jsonBuilder, jsonStream, &satellite_db, &error))
{
    std::cerr << "Error parsing JSON: " << error << std::endl;
    return 1;
}

// Mapping satellite names to countries
std::map<std::string, std::string> satellite_country_map;

for (const auto& satellite : satellite_data)
{
    std::string name = satellite["name"].asString();
    
    for (const auto& entry : satellite_db)
    {
        if (entry["name"].asString() == name)
        {
            std::string country = entry["country"].asString();
            satellite_country_map[name] = country;
            break;
        }
    }
}

// Printing satellite information
for (const auto& satellite : satellite_data)
{
    std::string name = satellite["name"].asString();
    double angle = satellite["angle"].asDouble();
    std::string country = satellite_country_map[name];

    std::cout << "Satellite Name: " << name << std::endl;
    std::cout << "Orbital Angle: " << angle << " degrees" << std::endl;
    std::cout << "Country: " << country << std::endl;
    std::cout << std::endl;
}

// Step 5: Perform the necessary calculations and plotting using an appropriate C++ library

return 0;




// -----------------------------------------------------------------------------------------------------------------------------




#include <iostream>
#include <vector>
#include <cmath>
#include <fstream>
#include <sstream>

#include <curl/curl.h>
#include <jsoncpp/json/json.h>
#include <armadillo>

// Step 1: Retrieve satellite data from the API
std::string satelliteDataAPIURL = "API_URL_HERE";
CURL* curl = curl_easy_init();
if (curl) {
    curl_easy_setopt(curl, CURLOPT_URL, satelliteDataAPIURL.c_str());
    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);

    std::string responseString;
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, [](char* ptr, size_t size, size_t nmemb, std::string* userdata) {
        userdata->append(ptr, size * nmemb);
        return size * nmemb;
    });
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &responseString);

    CURLcode res = curl_easy_perform(curl);
    if (res != CURLE_OK) {
        std::cerr << "Error retrieving satellite data: " << curl_easy_strerror(res) << std::endl;
        curl_easy_cleanup(curl);
        return 1;
    }

    curl_easy_cleanup(curl);

    Json::Reader reader;
    Json::Value satelliteData;
    if (!reader.parse(responseString, satelliteData)) {
        std::cerr << "Error parsing satellite data" << std::endl;
        return 1;
    }

    // Step 2: Parse TLE data using skyfield
    std::vector<std::pair<std::string, std::string>> tleData;
    for (const auto& satellite : satelliteData) {
        std::string line1 = satellite["tle_line1"].asString();
        std::string line2 = satellite["tle_line2"].asString();
        tleData.emplace_back(line1, line2);
    }

    // Load the required data files for calculations
    // You need to provide the path to the data directory where 'de421.bsp' file is located
    std::string dataDirectory = "path_to_data_directory";
    Loader load(dataDirectory);
    auto ephemeris = load("de421.bsp");
    auto satellites = load.tle_file(tleData);

    // Step 3: Visualize satellite orbits in 3D
    // Code for visualizing satellite orbits in C++ using a plotting library is more complex and depends on the library you choose.
    // Here's an example using the Gnuplot C++ API:

    // Include the necessary Gnuplot headers
    #include "gnuplot-iostream.h"

    // Create a Gnuplot object
    Gnuplot gp;

    // Set the plot style and labels
    gp << "set xlabel 'Longitude'\n";
    gp << "set ylabel 'Latitude'\n";
    gp << "set zlabel 'Altitude (km)'\n";

    // Plot each satellite's trajectory
    for (const auto& satellite : satellites) {
        // Calculate the satellite's position over time
        auto ts = load.timescale();
        auto t = ts.utc(2023, 7, 11, 0, arma::linspace<arma::vec>(0, 3600, 61));
        auto geocentric = satellite.at(t);
        auto subpoint = geocentric.subpoint();

        // Extract latitude, longitude, and altitude
        arma::vec latitude = subpoint.latitude.degrees();
        arma::vec longitude = subpoint.longitude.degrees();
        arma::vec altitude = subpoint.elevation.km();

        // Convert longitude, latitude, and altitude to vectors of strings
        std::vector<std::string> latitudeStr;
        std::vector<std::string> longitudeStr;
        std::vector<std::string> altitudeStr;

        for (size_t i = 0; i < latitude.n_elem; i++) {
            latitudeStr.push_back(std::to_string(latitude(i)));
            longitudeStr.push_back(std::to_string(longitude(i)));
            altitudeStr.push_back(std::to_string(altitude(i)));
        }

        // Plot the satellite's trajectory in 3D
        gp << "splot '-' with lines title 'Satellite Trajectory'\n";
        gp.send1d(boost::make_tuple(longitudeStr, latitudeStr, altitudeStr));
    }

    // Wait for a key press to exit the plot
    std::cout << "Press enter to exit." << std::endl;
    std::cin.ignore();

    // Step 4: Map satellites to countries using the satellite database API
    std::string satelliteDBAPIURL = "SATELLITE_DB_API_URL_HERE";
    curl = curl_easy_init();
    if (curl) {
        curl_easy_setopt(curl, CURLOPT_URL, satelliteDBAPIURL.c_str());
        curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);

        responseString.clear();
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, [](char* ptr, size_t size, size_t nmemb, std::string* userdata) {
            userdata->append(ptr, size * nmemb);
            return size * nmemb;
        });
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &responseString);

        res = curl_easy_perform(curl);
        if (res != CURLE_OK) {
            std::cerr << "Error retrieving satellite database: " << curl_easy_strerror(res) << std::endl;
            curl_easy_cleanup(curl);
            return 1;
        }

        curl_easy_cleanup(curl);

        Json::Value satelliteDB;
        if (!reader.parse(responseString, satelliteDB)) {
            std::cerr << "Error parsing satellite database" << std::endl;
            return 1;
        }

        // Mapping satellite names to countries
        std::map<std::string, std::string> satelliteCountryMap;
        for (const auto& satellite : satelliteData) {
            std::string name = satellite["name"].asString();
            for (const auto& entry : satelliteDB) {
                if (entry["name"] == name) {
                    std::string country = entry["country"].asString();
                    satelliteCountryMap[name] = country;
                    break;
                }
            }
        }

        // Printing satellite information
        for (const auto& satellite : satelliteData) {
            std::string name = satellite["name"].asString();
            double angle = satellite["angle"].asDouble();
            std::string country = satelliteCountryMap[name];

            std::cout << "Satellite Name: " << name << std::endl;
            std::cout << "Orbital Angle: " << angle << " degrees" << std::endl;
            std::cout << "Country: " << country << std::endl;
            std::cout << std::endl;
        }
    }
}

return 0;





//-----------------------------------------------------------------------------------------------------------------------------



// Step 3: Visualize satellite orbits in 3D
// Code for visualizing satellite orbits in C++ using a plotting library is more complex and depends on the library you choose.
// Here's an example using the Gnuplot C++ API:

// Include the necessary Gnuplot headers
#include "gnuplot-iostream.h"

// Create a Gnuplot object
Gnuplot gp;

// Set the plot style and labels
gp << "set xlabel 'Longitude'\n";
gp << "set ylabel 'Latitude'\n";
gp << "set zlabel 'Altitude (km)'\n";

// Plot each satellite's trajectory
for (const auto& satellite : satellites) {
    // Calculate the satellite's position over time
    auto ts = load.timescale();
    auto t = ts.utc(2023, 7, 11, 0, arma::linspace<arma::vec>(0, 3600, 61));
    auto geocentric = satellite.at(t);
    auto subpoint = geocentric.subpoint();

    // Extract latitude, longitude, and altitude
    arma::vec latitude = subpoint.latitude.degrees();
    arma::vec longitude = subpoint.longitude.degrees();
    arma::vec altitude = subpoint.elevation.km();

    // Convert longitude, latitude, and altitude to vectors of strings
    std::vector<std::string> latitudeStr;
    std::vector<std::string> longitudeStr;
    std::vector<std::string> altitudeStr;

    for (size_t i = 0; i < latitude.n_elem; i++) {
        latitudeStr.push_back(std::to_string(latitude(i)));
        longitudeStr.push_back(std::to_string(longitude(i)));
        altitudeStr.push_back(std::to_string(altitude(i)));
    }

    // Plot the satellite's trajectory in 3D
    gp << "splot '-' with lines title 'Satellite Trajectory'\n";
    gp.send1d(boost::make_tuple(longitudeStr, latitudeStr, altitudeStr));
}

// Wait for a key press to exit the plot
std::cout << "Press enter to exit." << std::endl;
std::cin.ignore();