#!/bin/sh

# symlinks or copies files into an automatically chosen target directory.

always_copy=0

if test -n "$COLLECT_FILE_TARGET"
then
  target="$COLLECT_FILE_TARGET"
else
  target="$HOME/collected-$(date +%Y-%m-%d)"
fi

if test 0 -eq $#
then
  echo "arguments: source_file ..."
  echo "COLLECT_FILE_TARGET: $target"
  exit
fi

while test $# -gt 0
do
  case "$1" in
    -c)
      always_copy=1
      ;;
    --)
      shift
      break
      ;;
    -*)
      echo "Unknown option: $1" >&2
      exit 1
      ;;
    *)
      break
      ;;
  esac
  shift
done

mkdir -p "$target"
target_device="$(stat -c %d "$target")"

for a in "$@"
do
  a="$(realpath "$a")"
  device="$(stat -c %d "$a")"
  if test 1 -eq $always_copy -o $target_device != $device
  then
    cp "$a" "$target"
  else
    ln -s "$a" "$target"
  fi
done