#!/usr/bin/env bash

# CD Ripper (GNU/Linux version)
# Given an a batch-ripping CD drive, like the Kodak KDK-1000-04, this
# script will rip all CDs to raw PCM data.
#
# Requires "cdtool" for detecting if a CD is in the drive using `cdir`,
# "eject" for ejecting and closing the drive, and "cdparanoia" for
# ripping the audio tracks off a CD

script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd_drive_optical="/dev/sr2" # Change this to your CD drive
cd_drive_serial="/dev/ttyUSB0"

function grabcd {
    echo -n 'A' > "$cd_drive_serial" `# Open the arms` \
    && sleep 1 \
    && eject  "$cd_drive_optical" `# Open the drive` \
    && echo -n 'G' > "$cd_drive_serial" `# Lift the disk` \
    && sleep 1 \
    && eject -t "$cd_drive_optical" `# Close the drive` \
    && echo -n 'A' > "$cd_drive_serial" `# Drop the disk` \
    && sleep 1 \
    && echo -n 'G' > "$cd_drive_serial" `# Ready arms for CD` \
    && sleep 1 \
    && echo -n 'I' > "$cd_drive_serial" `# Push CD into the arms` \
    && sleep 1 \
    && eject  "$cd_drive_optical" `# Open the drive` \
    && echo -n 'A' > "$cd_drive_serial" `# Lower CD into drive` \
    && sleep 1 \
    && eject -t "$cd_drive_optical" `# Close the drive` \
    && sleep 10 \
    && cdir -d $cd_drive_optical | grep -q "tracks" # Check for CD
}

function ripcd {
    cdparanoia \
        --log-summary="cdparanoia.log" \
        --stderr-progress \
        --force-cdrom-big-endian \
        --output-raw \
        --output-raw-little-endian \
        --batch \
        --never-skip=20 \
        --force-cdrom-device "$cd_drive_optical" \
        1-
}

while grabcd
do
    # If there are already CDs ripped in this directory, don't overwrite
    # existing ones.
    index=`ls 2>/dev/null | grep 'ripped-' | sort -t '-' -k 2 -g | tail -n 1 | awk '{print $NF}' | awk -F '-' '{print $2}'`

    if [[ "" == "$index" ]]
    then
        index="0"
    fi

    cd_out="ripped-$(($index+1))"
    mkdir "$cd_out" && cd "$cd_out" && ripcd && cd ..
done