#ifndef _WIN32

#include "platform.hpp"

#include <chrono>
#include <csignal>
#include <fcntl.h>
#include <stdexcept>
#include <sys/types.h>
#include <sys/wait.h>
#include <thread>
#include <unistd.h>

namespace connector {

ProcessResult run_process(const std::string& executable,
                          const std::vector<std::string>& arguments,
                          const std::filesystem::path& working_directory,
                          int timeout_seconds) {
  int output_pipe[2];
  if (pipe(output_pipe) != 0) throw std::runtime_error("无法创建 Spine 输出管道");
  const pid_t child = fork();
  if (child < 0) {
    close(output_pipe[0]);
    close(output_pipe[1]);
    throw std::runtime_error("无法启动 Spine 进程");
  }
  if (child == 0) {
    close(output_pipe[0]);
    dup2(output_pipe[1], STDOUT_FILENO);
    dup2(output_pipe[1], STDERR_FILENO);
    close(output_pipe[1]);
    if (!working_directory.empty()) chdir(working_directory.c_str());
    std::vector<char*> argv;
    argv.push_back(const_cast<char*>(executable.c_str()));
    for (const std::string& argument : arguments) argv.push_back(const_cast<char*>(argument.c_str()));
    argv.push_back(nullptr);
    execv(executable.c_str(), argv.data());
    _exit(127);
  }

  close(output_pipe[1]);
  fcntl(output_pipe[0], F_SETFL, fcntl(output_pipe[0], F_GETFL) | O_NONBLOCK);
  ProcessResult result;
  int status = 0;
  const auto deadline = std::chrono::steady_clock::now() + std::chrono::seconds(timeout_seconds);
  while (true) {
    char buffer[8192];
    const ssize_t count = read(output_pipe[0], buffer, sizeof(buffer));
    if (count > 0 && result.output.size() < 4 * 1024 * 1024) result.output.append(buffer, static_cast<std::size_t>(count));
    const pid_t state = waitpid(child, &status, WNOHANG);
    if (state == child) break;
    if (std::chrono::steady_clock::now() >= deadline) {
      result.timed_out = true;
      kill(child, SIGKILL);
      waitpid(child, &status, 0);
      break;
    }
    std::this_thread::sleep_for(std::chrono::milliseconds(20));
  }
  while (true) {
    char buffer[8192];
    const ssize_t count = read(output_pipe[0], buffer, sizeof(buffer));
    if (count <= 0) break;
    if (result.output.size() < 4 * 1024 * 1024) result.output.append(buffer, static_cast<std::size_t>(count));
  }
  close(output_pipe[0]);
  if (WIFEXITED(status)) result.exit_code = WEXITSTATUS(status);
  else if (WIFSIGNALED(status)) result.exit_code = 128 + WTERMSIG(status);
  return result;
}

}  // namespace connector

#endif