#!/usr/bin/env bash

file=/etc/yum.repos.d/mariadb.repo
install_cmd='yum install MariaDB-server'
gpgkey=https://downloads.mariadb.com/MariaDB/yum/RPM-GPG-KEY-MariaDB

err() {
  msg=$1
  shift
  printf "[ERROR] $msg\n" "$@" >&2
  exit 1
}

for d in "$PWD" "${0%/*}"; do
  if [[ -d $d/repodata ]] ; then
    dir=$d
    if ! [[ $dir = /* ]] ; then
      dir=$PWD/$dir
    fi
    break
  fi
done

if ! [[ $dir ]] ; then
  err 'Could not find a "repodata" directory. Please change to the top level directory of the unpacked archive. and re-run this script.'
fi

if [[ -e $file ]] ; then
  err 'File "%s" already exists. Rename it and re-run this script, or manually create a new .repo file.' "$file"
fi

if ! cat > "$file" <<EoF
[MariaDB]
name = MariaDB
baseurl = file://$dir
gpgkey = $gpgkey
gpgcheck = 1
enabled = 1
module_hotfixes = 1
EoF
  then
  err 'Could not create "%s". Please investigate and re-run this script.' "$file"
fi

printf 'Repository file successfully created! Please install MariaDB Server with this command:\n\n   %s\n\n' "$install_cmd"