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#!/bin/bash

# Setup backup environment
function hydra_backup_environment {
  NODE="$1"
  METHOD="$2"
  BACKUP_ROOT="/var/backups/remote"
  DOMAIN="`facter domain`"
  BACKUPDIR="$BACKUP_ROOT/$NODE.$domain"
  RESTOREDIR="$BACKUPDIR/restore/`date +%Y%m%d`"
  
  if [ -z "$NODE" ]; then
    hydra_action_usage
    exit 1
  fi
  
  if [ ! -d "$BACKUPDIR" ]; then
    echo "No backup found at $BACKUPDIR"
    exit 1
  fi
  
  if [ -z "$METHOD" ]; then
    if [ -d "$BACKUPDIR/rsync" ]; then
      echo "Assuming rsync backup method"
      BACKUPDIR="$BACKUPDIR/rsync"
    elif [ -d "$BACKUPDIR/rdiff" ]; then
      echo "Assuming rdiff backup method"
      BACKUPDIR="$BACKUPDIR/rdiff"
    else
      echo "Missing backup action"
      exit 1 
    fi
  else
    if [ "$METHOD" == "restore" ]; then
      echo "Invalid backup method 'restore'"
      exit 1
    elif [ -d "$BACKUPDIR/$METHOD" ]; then
      BACKUPDIR="$BACKUPDIR/$METHOD"
    else
      echo "Backup folder for $METHOD not found at $BACKUPDIR"
      exit 1 
    fi
  fi
  
  if [ -d "$RESTOREDIR" ]; then
    echo "Restoration folder $RESTOREDIR already exists"
    exit 1
  fi
  
  mkdir -p $RESTOREDIR
}