#! /bin/bash
# Script to create database 'opensim' in mysql if it does not exist.
# Someone has set the environment variables before running this.
# Needs:
#       MYSQL_DB_SOURCE
#       MYSQL_ROOT_PASSWORD
#       OPENSIM_DB_PASSWORD

OPENSIMBIN=${OPENSIMBIN:-/home/opensim/opensim/bin}
OPENSIMCONFIG=${OPENSIMCONFIG:-$OPENSIMBIN/config}

echo "opensim-docker: initializeDb.sh: "

cd "$OPENSIMCONFIG"

if [[ ! -z "$MYSQL_ROOT_PASSWORD" ]] ; then
    for needed in "MYSQL_DB_DB" "MYSQL_DB_SOURCE" "MYSQL_DB_USER" "MYSQL_DB_USER_PASSWORD" ; do
        if [[ -z "$!needed" ]] ; then
            echo "opensim-docker: initializeDb.sh: missing required env parameter $needed"
            echo "opensim-docker: initializeDb.sh: DATABASE NOT INITIALIZE"
            exit 5
        fi
    done

    SQLCMDS=/tmp/mymy$$
    SQLOPTIONS=/tmp/mymyoptions$$
    rm -f "$SQLCMDS"
    rm -f "$SQLOPTIONS"

    cat > "$SQLCMDS" <<EOFFFF
CREATE DATABASE $MYSQL_DB_DB;
USE $MYSQL_DB_DB;
CREATE USER '$MYSQL_DB_USER'@'%' IDENTIFIED BY '$MYSQL_DB_USER_PASSWORD';
GRANT ALL ON $MYSQL_DB_DB.* to '$MYSQL_DB_USER'@'%';
quit
EOFFFF
    cat > "$SQLOPTIONS" <<EOFFFF
[client]
user=root
password=$MYSQL_ROOT_PASSWORD
host=$MYSQL_DB_SOURCE
EOFFFF

    # If the database is started at the same time, what for it to initialize
    until mysql --defaults-extra-file=$SQLOPTIONS -e "show databases" ; do
        echo "opensim-docker: initializeDb.sh: Waiting on database to be ready"
        sleep 2
    done
    echo "opensim-docker: initializeDb.sh: Database is ready"


    HASDB=$(mysql --defaults-extra-file=$SQLOPTIONS -e "show databases" | grep "^opensim$")

    if [[ -z "$HASDB" ]] ; then
        echo "opensim-docker: initialzeDb.sh: creating opensim database"
        mysql --defaults-extra-file=$SQLOPTIONS < "$SQLCMDS"
    else
        echo "opensim-docker: initialzeDb.sh: opensim database has already been created"
    fi

    rm -f "$SQLCMDS"
    rm -f "$SQLOPTIONS"
else
    echo "opensim-docker: initializeDb.sh: Not configuring SQL database"
fi