#!/bin/sh

mkdir -p recordings

while true
do
    # get date in ISO 8601 format with nanoseconds
    PROGRAMM=$(test $(uname) = "Darwin" && echo "gdate" || echo "date")
    DATE=$($PROGRAMM "+%Y-%m-%d_%H-%M-%S.%6N%z")

    # record audio using ffmpeg
    ffmpeg \
        -y \
        -f pulse \
        -i "alsa_input.usb-HANMUS_USB_AUDIO_24BIT_2I2O_1612310-00.analog-stereo" \
        -ac 1 \
        -ar 96000 \
        -sample_fmt s32 \
        -t "3600" \
        -c:a flac \
        -compression_level 12 \
        "recordings/$DATE.flac"
done