"""Record reproducible latency context without reading user/device identifiers."""

import json
import platform
import subprocess
from pathlib import Path

import torch

info = {
    "platform": platform.platform(),
    "python": platform.python_version(),
    "machine": platform.machine(),
    "torch_threads": 4,
    "timing_context": "interactive workstation; not isolated; brief concurrent dashboard and MPS compatibility checks",
}
if platform.system() == "Darwin":
    for key, sysctl_name in [
        ("cpu", "machdep.cpu.brand_string"),
        ("memory_bytes", "hw.memsize"),
        ("logical_cpus", "hw.ncpu"),
    ]:
        value = subprocess.check_output(["sysctl", "-n", sysctl_name], text=True).strip()
        info[key] = value if key == "cpu" else int(value)
if torch.backends.mps.is_available():
    info["gpu_name"] = torch.backends.mps.get_name()
    info["gpu_cores"] = torch.backends.mps.get_core_count()
Path("reports/hardware.json").write_text(json.dumps(info, indent=2) + "\n")
print(json.dumps(info))