"""
FFmpeg Utilities
================
Shared check for FFmpeg availability, used by both Hindi and English TTS modules.

Usage:
    from backend.common import check_ffmpeg
    has_ffmpeg = check_ffmpeg()
"""

import subprocess


def check_ffmpeg() -> bool:
    """Check whether FFmpeg is installed and available on the system PATH.

    Returns True if the `ffmpeg -version` command exits successfully.
    Returns False otherwise (prints install instructions on first failure).
    """
    try:
        subprocess.run(
            ["ffmpeg", "-version"],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            check=True,
        )
        return True
    except (subprocess.CalledProcessError, FileNotFoundError):
        return False