#!/bin/sh
#
# Migrate the Monotone Server database, if needed
#
# Author: Thomas Moschny <thomas.moschny@gmx.de>
#
set -eu

MONOTONE_CONFDIR="${MONOTONE_CONFDIR:-/etc/monotone}"
MONOTONE_KEYDIR="${MONOTONE_KEYDIR:-/etc/monotone/private-keys}"
MONOTONE_DBFILE="${MONOTONE_DBFILE:-/var/lib/monotone/server.mtn}"
MONOTONE_PPFILE="${MONOTONE_PPFILE:-/etc/monotone/passphrase.lua}"

MONOTONE_KEYID="${MONOTONE_KEYID:-monotone@$(hostname -f)}"
MONOTONE_HOME="${MONOTONE_HOME:-/var/lib/monotone}"

cd "${MONOTONE_HOME}"

# check database
version="$(LC_ALL=C runuser -u monotone -- mtn \
  --confdir="${MONOTONE_CONFDIR}" --db="${MONOTONE_DBFILE}" \
  --keydir="${MONOTONE_KEYDIR}" db version)"

case ${version} in
  *"("usable")"*)
    echo $"Database is usable"
    exit
    ;;
esac

# database needs migration
echo $"Migrating dababase ${MONOTONE_DBFILE}"

# migrate database
runuser -u monotone -- mtn --confdir="${MONOTONE_CONFDIR}" \
  --db="${MONOTONE_DBFILE}" --keydir="${MONOTONE_KEYDIR}" \
  db migrate

runuser -u monotone -- mtn --confdir="${MONOTONE_CONFDIR}" \
  --db="${MONOTONE_DBFILE}" --keydir="${MONOTONE_KEYDIR}" \
  db regenerate_caches