#!/usr/bin/env bash

TMPDIR=$(mktemp -d)
CSPLIT_PREFIX=$TMPDIR/split

if [[ -n "$AUTOMV_DIR" ]]; then
  automvdir=$AUTOMV_DIR
else
  if [[ -d "/usr/local/etc/automv.d" ]]; then
    automvdir=/usr/local/etc/automv.d
  else
    echo 'Missing automv.d location: please create confs in /usr/local/etc/automv.d
          or supply a directory in $AUTOMV_DIR'
    exit 1
  fi
fi

function extract {
  local file=$1
  local prop=$2
  grep "^${prop}=.*$" $file | cut -d '=' -f2
}

function automv {
  local query=$1
  local source=$2
  local target=$3

  echo "Moving files from $source matching '$query' to $target"  
  find $source -type f \( -regex "${query}" ! -iname ".*" \) \
     | xargs -I '{}' mv -v {} $target/
}

function split {
  file=$1
  filename=$(basename --suffix=.conf $file)
  csplit $1 \
    --prefix="${CSPLIT_PREFIX}-${filename}" \
    --suffix-format='_%04d.conf' \
    --elide-empty-files \
    --suppress-matched \
    --keep-files \
    --silent \
    /---/ '{*}'
}

echo "Executing automv functions from $automvdir"
for file in $automvdir/*.conf
do
  split $file
done
for file in $TMPDIR/*.conf
do
  echo "found $file"
  if [[ -f $file ]]; then
    # Extract file configs
    query=$(extract $file "query")
    sourced=$(extract $file "source")
    target=$(extract $file "target")

    automv $query $sourced $target
  fi
done
echo "Automoved files"
echo "Removing tmp dir: $TMPDIR"
rm -r $TMPDIR
echo "Done"