Added an auto updater, and updated to the latest game version

memory-external/classes/auto_updater.cpp

@@ -0,0 +1,132 @@
+#include "auto_updater.hpp"
+
+
+namespace updater {
+	bool check_and_update(bool prompt_update) {
+		json commit;
+		if (!get_last_commit_date(commit)) {
+			std::cout << "[updater] error getting last commit information from github" << std::endl;
+			return false;
+		}
+
+		std::string last_commit_date = commit["date"];
+		std::string last_commit_author_name = commit["name"];
+
+		std::cout << "[updater] Last github repository update was made by " << last_commit_author_name << " the " << last_commit_date << std::endl;
+
+		// Parse the GitHub date string and convert it to a std::tm structure
+		std::tm commit_date = {};
+		std::istringstream(last_commit_date) >> std::get_time(&commit_date, "%Y-%m-%dT%H:%M:%SZ");
+
+		auto currentTime = std::chrono::system_clock::now();
+
+		std::chrono::seconds diff = std::chrono::duration_cast<std::chrono::seconds>(currentTime - std::chrono::system_clock::from_time_t(std::mktime(&commit_date)));
+
+		// Prompt the user if he wants to update the offsets.json if there was a commit in the last 5 days
+		if (diff.count() <= (5 * 24 * 3600)) {
+			std::cout << "[updater] There has been an update in the repository in the last 5 days!" << std::endl;
+			if (prompt_update)
+				std::cout << "[updater] Do you want to download the latest offsets? (y/n): ";
+
+			char response;
+			std::cin >> response;
+
+			if (!prompt_update || (response == 'Y' || response == 'y')) {
+				if (download_file(raw_updated_offets.c_str(), "offsets.json")) {
+					std::cout << "[updater] Successfully downloaded latest offsets.json file\n" << std::endl;
+					return true;
+				}
+				else {
+					std::cout << "[updater] Error failed to download file, try downloading manually from " << raw_updated_offets << "\n" << std::endl;
+				}
+			}
+		}
+
+		return false;
+	}
+
+	bool get_last_commit_date(json& commit) {
+		HINTERNET hInternet, hConnect;
+
+		hInternet = InternetOpen("AutoUpdater", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
+		if (!hInternet) {
+			return false;
+		}
+
+		hConnect = InternetOpenUrlA(hInternet, github_repo_api.c_str(), NULL, 0, INTERNET_FLAG_RELOAD, 0);
+		if (!hConnect) {
+			InternetCloseHandle(hInternet);
+			return false;
+		}
+
+		char buffer[4096];
+		DWORD bytesRead;
+		std::string commitData;
+
+		while (InternetReadFile(hConnect, buffer, sizeof(buffer), &bytesRead) && bytesRead > 0) {
+			commitData.append(buffer, bytesRead);
+		}
+
+		json data;
+		try {
+			data = json::parse(commitData);
+		}
+		catch (const std::exception& e) {
+			std::cout << "[updater] exception while parsing json response from github" << std::endl;
+			return false;
+		}
+
+		if (data.empty())
+			return false;
+
+		if (data.is_array()) {
+			json last_commit = data[0];
+			json last_commit_author = last_commit["commit"]["author"];
+
+			commit = last_commit_author;
+		}
+
+		InternetCloseHandle(hConnect);
+		InternetCloseHandle(hInternet);
+
+		return true;
+	}
+
+	bool download_file(const char* url, const char* localPath) {
+		HINTERNET hInternet, hConnect;
+
+		hInternet = InternetOpen("AutoUpdater", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
+		if (!hInternet) {
+			std::cerr << "InternetOpen failed." << std::endl;
+			return false;
+		}
+
+		hConnect = InternetOpenUrlA(hInternet, url, NULL, 0, INTERNET_FLAG_RELOAD, 0);
+		if (!hConnect) {
+			std::cerr << "InternetOpenUrlA failed." << std::endl;
+			InternetCloseHandle(hInternet);
+			return false;
+		}
+
+		std::ofstream outFile(localPath, std::ios::binary);
+		if (!outFile) {
+			std::cerr << "Failed to create local file." << std::endl;
+			InternetCloseHandle(hConnect);
+			InternetCloseHandle(hInternet);
+			return false;
+		}
+
+		char buffer[4096];
+		DWORD bytesRead;
+
+		while (InternetReadFile(hConnect, buffer, sizeof(buffer), &bytesRead) && bytesRead > 0) {
+			outFile.write(buffer, bytesRead);
+		}
+
+		outFile.close();
+		InternetCloseHandle(hConnect);
+		InternetCloseHandle(hInternet);
+
+		return true;
+	}
+}