# for import needed
import sys
from pathlib import Path

sys.path.append(str(Path(__file__).resolve().parent.parent))

from utils import run
### Normal Imports:

from subprocess import run, PIPE
from pathlib import Path
import json

def probe_video(path: Path) -> tuple[float, float, str, float]:
    cmd = [
        "ffprobe",
        "-v", "error",
        "-print_format", "json",
        "-show_streams",
        "-show_format",
        str(path),  # IMPORTANT
    ]

    result = run(cmd, stdout=PIPE, stderr=PIPE, text=True)

    if result.returncode != 0:
        raise RuntimeError(f"ffprobe failed:\n{result.stderr}")

    if not result.stdout.strip():
        raise RuntimeError("ffprobe returned empty output")

    try:
        data = json.loads(result.stdout)
    except json.JSONDecodeError as e:
        print("RAW OUTPUT:\n", result.stdout)  # debug
        raise

    duration = float(data["format"]["duration"])

    for s in data["streams"]:
        if s["codec_type"] == "video":
            num, den = s["r_frame_rate"].split("/")
            fps = float(num) / float(den)
            codec = s["codec_name"]
            start_time = float(s.get("start_time", 0))
            return fps, duration, codec, start_time

    raise RuntimeError("No video stream found")