#!/bin/bash

echo "####################################################################"
echo "# docker_mariadb create_database_for_customer script               #"
echo "# Dennis Buchhorn - bucde@b-eit.de                                 #"
echo "####################################################################"
echo "# WARNING: password is plain text!                                 #"
#echo "#  #"
echo "####################################################################"
echo ""

MARIADB_CONTAINER_NAME=""
MARIADB_ROOT_PASSWORD=""
MARIADB_DATABASE_NAME=""
MARIADB_DATABASE_CHARACTER_SET=""
MARIADB_DATABASE_COLLATE=""

TMP=$(docker container ls --format "{{.Names}}")

for ENTRY in $TMP; do
    CONTAINER_LIST+=($ENTRY)
done

if [[ ${#CONTAINER_LIST[@]} > 0 ]]; then
    echo "List of all running containers:"

    for I in ${!CONTAINER_LIST[@]}; do
        echo "  Number [$I]: ${CONTAINER_LIST[$I]}"
    done
else
    echo "No containers running!"

    exit 1
fi

read -p "Enter mariadb container number: " TMP

MARIADB_CONTAINER_NAME="${CONTAINER_LIST[$TMP]}"

read -p "Enter mariadb root password: " MARIADB_ROOT_PASSWORD

rm -f tmp
touch tmp
echo "SELECT user FROM mysql.user;" >> tmp

TMP=$(cat tmp | docker exec -i $MARIADB_CONTAINER_NAME mysql -uroot -p$MARIADB_ROOT_PASSWORD -BN)

rm -f tmp

for ENTRY in $TMP; do
    if ! [[ $ENTRY == "root" || $ENTRY == "mariadb.sys" ]]; then
        CUSTOMER_LIST+=($ENTRY)
    fi
done

if [[ ${CUSTOMER_LIST[@]} > 0 ]]; then
    echo "List of all customers:"

    for I in ${!CUSTOMER_LIST[@]}; do
        echo "  Number [$I]: ${CUSTOMER_LIST[$I]}"
    done
else
    echo "No customers!"

    exit 1
fi

read -p "Enter customer number: " TMP

MARIADB_CUSTOMER_NAME="${CUSTOMER_LIST[$TMP]}"

read -p "Enter database name: " MARIADB_DATABASE_NAME
read -p "Enter character set (leave empty for default (utf8)): " MARIADB_DATABASE_CHARACTER_SET
read -p "Enter collate (leave empty for default (utf8_unicode_ci)): " MARIADB_DATABASE_COLLATE

if [[ -z $MARIADB_DATABASE_CHARACTER_SET ]]; then
    MARIADB_DATABASE_CHARACTER_SET="utf8"
fi

if [[ -z $MARIADB_DATABASE_COLLATE ]]; then
    MARIADB_DATABASE_COLLATE="utf8_unicode_ci"
fi

rm -f tmp
touch tmp
echo "CREATE DATABASE IF NOT EXISTS $MARIADB_DATABASE_NAME CHARACTER SET '$MARIADB_DATABASE_CHARACTER_SET' COLLATE '$MARIADB_DATABASE_COLLATE';" >> tmp
echo "GRANT ALL PRIVILEGES ON $MARIADB_DATABASE_NAME.* TO '$MARIADB_CUSTOMER_NAME'@'%';" >> tmp
echo "FLUSH PRIVILEGES;" >> tmp

TMP=$(cat tmp | docker exec -i $MARIADB_CONTAINER_NAME mysql -uroot -p$MARIADB_ROOT_PASSWORD -BN)

rm -f tmp

echo "Done!"