#!/usr/bin/env python3
"""Throwaway: one software-encoder publisher reading cam-01 I420 SHM.

Does not open /dev/camNN. Identity spike-sw so it does not kick cam-01.
"""
from __future__ import annotations

import json
import os
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT))
os.chdir(ROOT)

from config import load_config  # noqa: E402
from tokens import make_token  # noqa: E402

SHM_DIR = "/run/livekit-cameras/raw"
SRC = f"{SHM_DIR}/cam-01.i420"
LINK = f"{SHM_DIR}/spike-sw.i420"


def main() -> int:
    cfg = load_config()
    if not os.path.exists(SRC):
        print("missing", SRC, file=sys.stderr)
        return 1
    try:
        os.remove(LINK)
    except FileNotFoundError:
        pass
    os.symlink(SRC, LINK)
    cam = {
        "index": 0,
        "identity": "spike-sw",
        "video_device": "/dev/null",
        "audio_card": None,
        "usb_port": "",
        "serial": "",
        "extra_video_devices": [],
        "width": 640,
        "height": 360,
        "token": make_token(cfg.url, cfg.api_key, cfg.api_secret, cfg.room, "spike-sw"),
    }
    os.environ.setdefault(
        "LIVEKIT_LIB_PATH",
        str(ROOT / "native" / "liblivekit_ffi.so"),
    )
    os.environ.setdefault("LIBVA_DRM_DEVICE", cfg.vaapi_device)
    os.environ.setdefault("LIBVA_DRIVER_NAME", "iHD")
    argv = [
        sys.executable,
        str(ROOT / "run_publisher.py"),
        "--cameras-json", json.dumps([cam]),
        "--url", cfg.url,
        "--room", cfg.room,
        "--width", "640",
        "--height", "360",
        "--fps", "30",
        "--bitrate", str(cfg.video_bitrate),
        "--video-codec", "h264",
        "--video-encoder", "software",
        "--vaapi-device", cfg.vaapi_device,
        "--audio-rate", str(cfg.audio_rate),
        "--enhance-mode", "off",
        "--beamform-mode", "off",
        "--video-shm-dir", SHM_DIR,
        "--audio-shm-dir", cfg.audio_shm_dir,
        "--encoder-rss-limit-kb", "99000000",
    ]
    os.execv(sys.executable, argv)


if __name__ == "__main__":
    raise SystemExit(main())