#!/bin/bash

set -e

TARGET="/var/db/${APP_NAME}/backup"

mkdir -p "${TARGET}"

timestamp=$(date +"%Y%m%d%H%M%S")

echo -n "* Generating database backup..." >&2

dump_postgresql() {
  dst="${TARGET}/postgresql-dump-${timestamp}.pgdump"
  touch "$dst" && chmod 0640 "$dst"
  pg_dump -Fc $DATABASE_URL > $dst

  echo " done" >&2
  echo "$dst"
}

dump_mysql() {
  tmpfile=$(mktemp)
  database=$(ruby -ruri -e 'puts URI(ENV["DATABASE_URL"]).path[1..-1]')

  ruby -ruri -rcgi -e '
  uri = URI(ENV["DATABASE_URL"])
  params = CGI.parse(uri.query || "")
  config=<<CONFIG
[client]
password="#{uri.password}"
user="#{uri.user}"
host="#{uri.host}"
port="#{uri.port}"
CONFIG
  config += %{ssl-key="#{params["sslkey"].first}"\n} if params.has_key?("sslkey")
  config += %{ssl-cert="#{params["sslcert"].first}"\n} if params.has_key?("sslcert")
  config += %{ssl-ca="#{params["sslca"].first}"\n} if params.has_key?("sslca")
  puts config' > ${tmpfile}

  dst="${TARGET}/mysql-dump-${timestamp}.sql.gz"
  touch "$dst" && chmod 0640 "$dst"
  mysqldump --defaults-file=${tmpfile} --single-transaction "${database}" | gzip > "$dst"
  echo " done" >&2
  echo "$dst"
  rm -f ${tmpfile}
}

if [[ $DATABASE_URL == postgres* ]] ;
then
  dump_postgresql
else
  dump_mysql
fi


if [ -d "$SVN_REPOSITORIES" ]; then
  dst="${TARGET}/svn-repositories-${timestamp}.tar.gz"
  touch "$dst" && chmod 0640 "$dst"
  echo -n "* Generating SVN repositories backup..." >&2
  if tar czf "$dst" -C "${SVN_REPOSITORIES}" . ; then
    echo " done" >&2
    echo "$dst"
  else
    echo " failed" >&2
  fi
else
  echo "* No SVN repositories folder. Ignoring." >&2
fi

if [ -d "$GIT_REPOSITORIES" ]; then
  dst="${TARGET}/git-repositories-${timestamp}.tar.gz"
  touch "$dst" && chmod 0640 "$dst"
  echo -n "* Generating Git repositories backup..." >&2
  if tar czf "$dst" -C "${GIT_REPOSITORIES}" . ; then
    echo " done" >&2
    echo "$dst"
  else
    echo " failed" >&2
  fi
else
  echo "* No Git repositories folder. Ignoring." >&2
fi

if [ -d "$ATTACHMENTS_STORAGE_PATH" ]; then
  dst="${TARGET}/attachments-${timestamp}.tar.gz"
  touch "$dst" && chmod 0640 "$dst"
  echo -n "* Generating attachments backup..." >&2
  if tar czf "$dst" -C "${ATTACHMENTS_STORAGE_PATH}" . ; then
    echo " done" >&2
    echo "$dst"
  else
    echo " failed" >&2
  fi
else
  echo "* No attachments folder. Ignoring." >&2
fi

if [ -d "/etc/${APP_NAME}/conf.d" ]; then
  dst="${TARGET}/conf-${timestamp}.tar.gz"
  touch "$dst" && chmod 0640 "$dst"
  echo -n "* Saving configuration..." >&2
  if tar czf "$dst" -C /etc/${APP_NAME}/conf.d . ; then
    echo " done" >&2
    echo "$dst"
  else
    echo " failed" >&2
  fi
else
  echo "* no configuration folder. Ignoring." >&2
fi