#!/bin/bash

# ensure right directory
realpath=$( ruby -e "puts File.expand_path(\"$0\")")
cd $(dirname $realpath)/..

DBCONFIG=$( ruby -r yaml -e "puts YAML.load_file('config/database.yml')['production'].values_at('adapter','host','port','username','password','database','encoding').join(';')" )
IFS=';' read -a DBCONFIG_ARRAY <<< "$DBCONFIG"

ADAPTER=${DBCONFIG_ARRAY[0]}
HOST=${DBCONFIG_ARRAY[1]}
PORT=${DBCONFIG_ARRAY[2]}
USERNAME=${DBCONFIG_ARRAY[3]}
PASSWORD=${DBCONFIG_ARRAY[4]}
DATABASE=${DBCONFIG_ARRAY[5]}
ENCODING=${DBCONFIG_ARRAY[6]}

DATE=$( date +%F_%H-%M-%S )
DUMP_FILE_NAME=${ADAPTER}_${DATABASE}_${DATE}
ARCHIVE_FILE_NAME=diaspora_$(hostname)_${DATE}

case $ADAPTER in
  postgresql)
    echo "Running PostgreSQL dump..."
    TMP_FILE=$( mktemp )
    env PGPASSWORD=$PASSWORD pg_dump -h $HOST -p $PORT -U $USERNAME -E $ENCODING $DATABASE > $TMP_FILE
    status=$?
    if [ $status -ne 0 ]; then
      echo "Error running dump command: $status"
      exit $status
    fi
    gzip -n $TMP_FILE
    mv $TMP_FILE.gz $DUMP_FILE_NAME.sql.gz
    ;;
  *)
    echo "Unknown adapter $ADAPTER"
    exit 1
esac

echo "creating archive $ARCHIVE_FILE_NAME..."
tar -cf $ARCHIVE_FILE_NAME.tar $DUMP_FILE_NAME.sql.gz public/uploads config/diaspora.yml

status=$?
if [ $status -eq 0 ]; then
  echo "Successfully created archive $ARCHIVE_FILE_NAME."
else
  echo "Error $status running tar. Archive wasn't created."
fi

unlink $DUMP_FILE_NAME.sql.gz
exit $status