#!/bin/sh
# symlinks, hardlinks or copies files into an automatically chosen target directory.
always_copy=0
always_link=0
if test -n "$COLLECT_FILE_TARGET"
then
  target="$COLLECT_FILE_TARGET"
else
  target="$HOME/collections/$(date +%Y-%m-%d)"
fi
if test $# -eq 0
then
  echo "arguments: source_file ..." >&2
  exit 1
fi
while test $# -gt 0
do
  case "$1" in
    -c) always_copy=1;;
    -l) always_link=1;;
    --) shift; break;;
    -*) echo "Unknown option: $1" >&2; exit 1;;
    *) break;;
  esac
  shift
done
if test $always_copy -eq 1 -a $always_link -eq 1
then
  echo "Cannot use -c and -l together" >&2
  exit 1
fi
mkdir -p "$target"
target_device="$(stat -c %d "$target")"
for src in "$@"
do
  src="$(realpath "$src")"
  device="$(stat -c %d "$src")"
  if test $always_copy -eq 1 -o "$target_device" != "$device"
  then
    cp "$src" "$target"
  else
    if test $always_link -eq 1
    then
      ln "$src" "$target"
    else
      ln -s "$src" "$target"
    fi
  fi
done