#!/bin/bash

# mp-pool-clean | MatterLinux pool cleanup script
# MatterLinux 2023-2024 (https://matterlinux.xyz)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

#############################
## import common functions ##
#############################
location=$(dirname "${0}")
location=$(realpath "${location}")
commonsh="$(echo "${location}" | sed 's/\/bin/\/lib/g')/mtsc-common.sh"

source "${commonsh}" > /dev/null

if [ "${?}" != "0" ]; then
  echo "Failed to import mtsc-common"
  exit 1
fi

#################
## main script ##
#################
target="${1}"

if [ -z "${target}" ]; then
  error "Please specify a pool directory"
  exit 1
fi

if [ ! -d "${target}" ]; then
  error "Pool directory \"${target}\" does not exist"
  exit 1
fi

cd "${target}"
check_ret "Failed to change directory into \"${target}\""

if [ ! -f "pool.sh" ]; then
  error "Package directory does not contain a pool script (pool.sh)"
  exit 1
fi

# source and verify the package script
source "pool.sh"
check_ret "Failed to source the pool script"

check_pool_vars
check_ret

# setup package directories
pkgpath="$(realpath .)"
distpath="$(realpath 'dist')"
srcpath="$(realpath "${SRCDIR}")"

if [ ! -d "${srcpath}" ]; then
  error "Source path does not exist"
  exit 1
fi

if [ ! -d "${distpath}" ]; then
  info "Nothing to do (dist directory does not exist)"
  exit 1
fi

# source and store every package 
files=("INFO" "LIST")
pc="$(ls -1q "${srcpath}" | wc -l)"
pi=1

info "Sourcing all the packages"
set_indent

for pkg in "${srcpath}/"*; do
  package=$(basename "${pkg}")
  info "(${pi}/${pc}) Sourcing \"${package}\""

  source "${pkg}/pkg.sh"
  check_ret "(${pi}/${pc}) Failed to import the source script for \"${package}\""

  check_pkg_vars
  check_ret
  
  files+=("${NAME}_${VERSION}.mpf")
  files+=("${NAME}_${VERSION}.mpf.sig")
  pi=$((pi+1))
done

success "Completed"
unset_indent

info "Cleaning up old archives and signatures"
pushd "${distpath}" > /dev/null
set_indent

for file in *; do
  found=0
  for f in "${files[@]}"; do
    if [ "${file}" == "${f}" ]; then
      found=1
      break
    fi
  done

  if [ $found -eq 0 ]; then
    info "Removing ${file}"
    rm "${file}"
    check_ret "Failed to remove ${file}"
  fi
done

popd > /dev/null
success "Completed"
unset_indent