// platform.hpp — Linux substitutes for the Win32 calls used by
// Agent_Release_x64.exe (see decomp/Agent_Release_x64/cpp/AgentProcessControl.cpp).
#pragma once
#include <sys/types.h>
#include <functional>
#include <string>

namespace platform {

// Replaces CreateMutexW(L"Global\\RustyHearts_Agent") (0x1400100b0).
// Uses an exclusive flock() on a lock file; released automatically on exit.
class SingleInstanceLock {
public:
    explicit SingleInstanceLock(const std::string& name);
    ~SingleInstanceLock();
    bool acquired() const { return fd_ >= 0; }
private:
    int fd_ = -1;
};

// Replaces CreateProcessW(..., CREATE_NEW_CONSOLE, ..., workDir) (0x1400094e0).
// commandLine is split on whitespace (the original passes one string to Windows).
// The child gets its own session (setsid) as the nearest analogue of a new console.
// Returns pid > 0, or 0 on failure (same contract as the original).
pid_t LaunchProcess(const std::string& commandLine, const std::string& workDir);

// Replaces the watcher's GetExitCodeProcess polling loop (0x140008c90) with a
// blocking waitpid(). Calls onExit(pid) on a detached thread once the child exits.
void WatchProcess(pid_t pid, std::function<void(pid_t)> onExit);

// Replaces Toolhelp32 + OpenProcess + TerminateProcess (0x140009780).
// Scans /proc, matches basename of argv[0] case-insensitively, kills the FIRST
// match with SIGKILL (TerminateProcess is unconditional), returns true if killed.
bool KillProcessByName(const std::string& exeName);

// Replaces Sleep(ms).
void SleepMs(unsigned ms);

} // namespace platform