#!/bin/bash

set -e

if [ -z "$1" ]; then
    echo "Usage: $0 /path/to/videos [new-link-dir] [num_days]"
    exit 1
fi

watch_dir="$1"
new_link_dir="${2:-${watch_dir}/-NEW-}"
num_days="${3:-14}"

find "${new_link_dir}" -type l -delete

find "$watch_dir" -type f -mtime "-${num_days}" |
    while read line; do
        if basename "$line" | grep -q '^\.'; then
            continue
        fi
        linkname="$(echo "$line" | sed -e "s|$watch_dir/||" -e "s|/| - |g")"
        ln -s "$line" "${new_link_dir}/$linkname"
    done