Alas/blcrack/updater/server.hpp

#ifndef SERVER_HPP
#define SERVER_HPP

#include <map>
#include <string>
#include <httplib.h>
#include <vector>
#include <thread>
#include <filesystem>

namespace fs = std::filesystem;

class UpdateServer : protected httplib::Server {
    using ArchName = std::string;
    using FileName = std::string;
    using FileData = std::vector<char>;
    using FileHash = std::string;
    struct FileInfo {
        FileData data;
        FileHash hash;
    };
public:
    UpdateServer();
    ~UpdateServer() override = default;

    UpdateServer& start(int port = 7541, const std::string& admin_key = "");
    void join();

    static UpdateServer& Instance();

private:
    void update_files();
    static FileHash hash_file(const FileData& data);
    bool is_file_exists(const std::string& arch, const std::string& file) const;

    std::string m_admin_key;
    std::thread m_server_thread;
    fs::path m_assets_dir;
    std::map<ArchName, std::map<FileName, FileInfo>> m_files;
};

#endif //SERVER_HPP