#!/usr/bin/env bash

FILE="${PARUPDATE_FILE:-/tmp/.update}"
TIME_MIN="${PARUPDATE_TIME:-30}"

fetch_upd() {
  paru -Syy >/dev/null 2>&1
  write_upd
}

write_upd() {
  paru -Qu 2>/dev/null | wc -l >"$FILE"
}

get_upd() {
  if [[ -f "$FILE" ]]; then
    cat "$FILE"
  else
    echo "0"
  fi
}

age() {
  local now file_date diff
  now=$(date +%s)
  file_date=$(stat -c '%Y' -- "$FILE" 2>/dev/null || echo 0)
  diff=$(( now - file_date ))
  echo "$diff"
}

TIME_SEC=$(( TIME_MIN * 60 ))

if [[ ! -f "$FILE" || $(age) -ge "$TIME_SEC" ]]; then
  fetch_upd
fi

get_upd