#!/usr/bin/env python3
import os
import subprocess
import datetime
import pytz

OUTDIR = "chunks_unprocessed"
DURATION = 10800  # 3 Stunden
SOURCE = "pulse"  # funktioniert mit PulseAudio

os.makedirs(OUTDIR, exist_ok=True)

def get_next_section_start(now):
    hour = now.hour
    next_boundary = (hour // 3 + 1) * 3
    if next_boundary >= 24:
        next_time = now.replace(day=now.day, hour=0, minute=0, second=0, microsecond=0) + datetime.timedelta(days=1)
    else:
        next_time = now.replace(hour=next_boundary, minute=0, second=0, microsecond=0)
    return next_time

def record_section():
    tz = pytz.timezone("Europe/Berlin")
    now = datetime.datetime.now(tz)
    timestamp = now.strftime("%Y%m%d-%H%M")
    filename = os.path.join(OUTDIR, f"{timestamp}.flac")
    print(f"🎙️ Starte Aufnahme: {filename}")

    next_start = get_next_section_start(now)
    duration_seconds = int((next_start - now).total_seconds())

    cmd = [
        "ffmpeg",
        "-f", "pulse",
        "-i", "alsa_input.usb-HANMUS_USB_AUDIO_24BIT_2I2O_1612310-00.analog-stereo",
        "-ac", "1",
        "-ar", "96000",
        "-sample_fmt", "s32",
        "-t", str(duration_seconds),
        "-c:a", "flac",
        "-compression_level", "12",
        filename
    ]
    subprocess.run(cmd)
    print(f"✅ Aufnahme abgeschlossen: {filename}")

def main():
    while True:
        record_section()

if __name__ == "__main__":
    main()