#!/bin/bash

REPOSITORIES_PATH="/var/paludis/repositories"
VDB_PATH="/var/db/pkg"

find_duplicates() {
  local first_path=${REPOSITORIES_PATH}/${1}
  local second_path=${REPOSITORIES_PATH}/${2}
  pushd ${first_path} &>/dev/null
  echo "Duplicate packages between ${1} and ${2}:"
  echo
  for i in $(find . -name '*.ebuild' | sort -u); do 
    ls ${second_path}/${i} &>/dev/null && echo ${i} | sed 's:./\([^/]*\)/[^/]*/\([^/]*\).ebuild:\1/\2:'
  done
  echo
  popd &>/dev/null
}

find_unused() {
  local repo_path=${REPOSITORIES_PATH}/${1}
  pushd ${repo_path} &>/dev/null
  echo "Unused packages in ${1}:"
  echo
  for i in $(find . -name '*.ebuild' | sed 's:./\([^/]*\)/[^/]*/\([^/]*\).ebuild:\1/\2:' | sort -u); do
    ls ${VDB_PATH}/${i} &>/dev/null || echo ${i}
  done
  echo
  popd &>/dev/null
}

main() {
  for i in gnome gentoo systemd; do
    find_duplicates ${1} ${i}
  done
  find_unused systemd | grep -Ev '(avahi|/systemd|networkmanager|wpa_supplicant|bootchart2)'
  find_unused ${1} | grep -Ev '(bomb-her-man|gnome-paint|librabbitmq|gpaste|germinal)'
}

main keruspe