149 lines
No EOL
4.3 KiB
C++
149 lines
No EOL
4.3 KiB
C++
/**
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\file UsernameConfig.cpp
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Copyright Notice\n
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Copyright (C) 2021 Jan Rogall - developer\n
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This file is part of hueplusplus.
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hueplusplus is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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hueplusplus is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with hueplusplus. If not, see <http://www.gnu.org/licenses/>.
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\example{lineno} UsernameConfig.cpp
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This example reads the username and mac address from a config file.
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**/
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#include <algorithm>
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#include <fstream>
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#include <iomanip>
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#include <iostream>
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#include <hueplusplus/Bridge.h>
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#ifdef _MSC_VER
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#include <hueplusplus/WinHttpHandler.h>
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using SystemHttpHandler = hueplusplus::WinHttpHandler;
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#else
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#include <hueplusplus/LinHttpHandler.h>
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using SystemHttpHandler = hueplusplus::LinHttpHandler;
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#endif
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namespace hue = hueplusplus;
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// Reads a json config file.
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// filename: Path to the config file
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// returns parsed json or an empty object if not successful.
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nlohmann::json readConfigFile(const std::string& filename)
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{
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std::ifstream stream(filename);
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try
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{
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nlohmann::json result = nlohmann::json::object();
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if (stream)
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{
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stream >> result;
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}
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return result;
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}
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catch (const nlohmann::json::exception&)
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{
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// Ignore parse errors
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return nlohmann::json::object();
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}
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}
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// Saves a json file.
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// filename: Path to the config file
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// config: Json value to save
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void saveConfigFile(const std::string& filename, const nlohmann::json& config)
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{
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std::ofstream stream(filename);
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stream << std::setw(4) << config;
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}
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// Connects to a bridge and returns it
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// username: Already existing username, can be left empty.
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// macAddress: MAC address of the bridge, can be left empty.
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// throws std::runtime_error when the bridge was not found.
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// returns a connected bridge.
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hue::Bridge connectToBridge(const std::string& username, const std::string& macAddress)
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{
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hue::BridgeFinder finder(std::make_shared<SystemHttpHandler>());
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std::vector<hue::BridgeFinder::BridgeIdentification> bridges = finder.findBridges();
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for (const auto& bridge : bridges)
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{
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std::cout << "Bridge: " << bridge.mac << " at " << bridge.ip << '\n';
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}
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if (bridges.empty())
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{
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std::cout << "Found no bridges\n";
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throw std::runtime_error("no bridges found");
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}
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if (macAddress.empty())
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{
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std::cout << "No bridge given, connecting to first one.\n";
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return finder.getBridge(bridges.front());
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}
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if (!username.empty())
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{
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finder.addUsername(macAddress, username);
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}
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auto it = std::find_if(
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bridges.begin(), bridges.end(), [&](const auto& identification) { return identification.mac == macAddress; });
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if (it == bridges.end())
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{
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std::cout << "Given bridge not found\n";
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throw std::runtime_error("bridge not found");
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}
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return finder.getBridge(*it);
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}
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// Connects to a bridge. The steps are:
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// - read "config.json" for an existing config
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// - connect to the bridge
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// - save the username to the config file for the next run
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//
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// Also prints out the IP and username.
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int main(int argc, char** argv)
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{
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const std::string filename = "config.json";
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try
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{
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nlohmann::json config = readConfigFile(filename);
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const std::string username = config.value("username", "");
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const std::string macAddress = config.value("mac", "");
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hue::Bridge hue = connectToBridge(username, macAddress);
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// Store updated information into file
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config["username"] = hue.getUsername();
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config["mac"] = hue.config().getMACAddress();
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saveConfigFile(filename, config);
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std::cout << "Connected to bridge. IP: " << hue.getBridgeIP() << ", username: " << hue.getUsername() << '\n';
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}
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catch (...)
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{ }
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std::cout << "Press enter to exit\n";
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std::cin.get();
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return 0;
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} |