#!/bin/sh

if [ ! -d /run/mysqld ]; then
  echo "/run/mysqld not found so creating one"
  mkdir -p /run/mysqld
fi
chown mysql:mysql /run/mysqld

if [ ! -d $DATADIR ]; then
  echo "initializing db because $DATADIR is missing"

  echo "creating $DATADIR and ensuring permissions"
  mkdir -p $DATADIR
  chown mysql:mysql $DATADIR


  echo "installing db"
  su-exec mysql:mysql mysql_install_db --force --datadir=$DATADIR

  echo "pushing initialization data into server"
  su-exec mysql:mysql mysqld --bind-address=127.0.0.1 --datadir=$DATADIR &
  pid="$!"

  for i in {30..0}; do
    if echo 'SELECT 1' | mysql &> /dev/null; then
      break
    fi
    echo 'MySQL init process in progress...'
    sleep 5
	done

  envsubst "`printf '${%s} ' $(sh -c "env|cut -d'=' -f1")`" < /etc/templates/dbinit.sql > /tmp/dbinit.sql
  cat /tmp/dbinit.sql | mysql

  if ! kill -s TERM "$pid" || ! wait "$pid"; then
    echo >&2 'MySQL init process failed.'
    exit 1
  fi

  rm /tmp/dbinit.sql
fi