#!/bin/bash -e
# -e Causes bash script to exit if any of the steps
# return with a non-zero return value.

if [[ $EUID -ne 0 ]]; then
    echo "Please run as root user."
    exit 1
fi

getStorDirFromDatabase() {
    # here-doc to execute this block as postgres user
    result=`su postgres <<'EOF'
    set +e
    echo $(psql -d airtime -tAc "SELECT directory FROM cc_music_dirs WHERE type='stor'")
    set -e
# don't indent this!
EOF`
    echo $result
}

dropAirtimeDatabase() {
    # here-doc to execute this block as postgres user
    su postgres <<'EOF'
    set +e
    # DROP DATABASE cannot be executed from a function or multi-command string
    psql -d postgres -tAc "DROP DATABASE IF EXISTS airtime"
    psql -d postgres -tAc "DROP USER IF EXISTS airtime"
    set -e
# don't indent this!
EOF
}

SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
AIRTIMEROOT=${SCRIPT_DIR}

STOR_DIR=$(getStorDirFromDatabase)

FILES=(
     "${STOR_DIR}"
     "/etc/airtime"
     "/var/log/airtime"
     "/usr/lib/airtime"
     "/usr/share/airtime"
     "/etc/init/airtime*"
     "/usr/bin/airtime*"
     "/etc/apache2/sites-available/airtime*"
     "pip airtime-playout"
     "pip airtime-media-monitor"
    )

echo -e "The following files, directories, and services will be removed:\n"
for i in ${FILES[*]}; do
    echo $i
done

echo -e "\nThis will *permanently* remove Airtime and all related files from your computer. \
Any files in Airtime directories and subdirectories will be deleted. Are you sure you want to proceed? (Y/n): \c"
read IN
if [[ ! ( "$IN" = "y" || "$IN" = "Y" ) ]]; then
    exit 0
fi

echo -e "\nAre you sure you want to remove your music storage directory ${STOR_DIR} and all of its subdirectories? (Y/n): \c"
read IN
if [[ "$IN" = "y" || "$IN" = "Y" ]]; then
    rm -rf ${STOR_DIR}
fi

echo "Uninstalling Airtime..."
rm -rf /etc/airtime
rm -rf /var/log/airtime/
rm -rf /usr/lib/airtime/

rm -rf /usr/share/airtime

rm -f /etc/init/airtime*
rm -f /usr/bin/airtime*

rm -f /etc/apache2/sites-enabled/airtime*
rm -f /etc/apache2/sites-available/airtime*

dropAirtimeDatabase

pip uninstall -y airtime-playout airtime-media-monitor
echo "...Done"