#!/bin/bash
#
# Part of the SMLinux distribution
# http://git.pktsurf.in/smlinux
#
# autobuild version 0.100
# Bash script to automatically build section-specific packages for SMLinux
#
# Copyright (c) 2023 PktSurf <smlinux@pktsurf.in>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
############

sections=(base xorg gtk extra net xfce)

buildcleanup() {
  [[ -f $autobuildtemp ]] && rm -f $autobuildtemp
  exit
}

trap "buildcleanup" INT
trap "buildcleanup" EXIT

err() {
  printf "**ERROR**\n$@\n"
  exit 1
}

warn() {
  printf "[WARN]\n$@\n"
}

info() {
  printf "[INFO] $@\n"
}

parenttmp="/tmp"
autobuild=1
arch="$HOSTTYPE"
colours=0
autobuildtemp="$(mktemp $parenttmp/SMBUILD.XXXXXX)"

export parenttmp autobuild arch colours autobuildtemp

for section in "${sections[@]}" ; do

  pkgdest="$parenttmp/sml/packages/$arch/$section"
  logdir="$parenttmp/sml/sml-buildlogs/$arch/$section"
  export section pkgdest
  mkdir -p $pkgdest $logdir

  if [[ ! -d $section ]] ; then
    err "Section directory '$section' not found!"
  fi

  cd $section

  # This check compares a list of source directories with the list of the
  # packages in the build list and warns of any missing package names 
  # in either of the two.

  dirtempfile=$(mktemp $parenttmp/DIRECTORYNAMES."$section".XXXXXX)
  dirfiletemppath="$dirtempfile"
  dirlist=$(find . -type d -maxdepth 1 -mindepth 1 | sed 's@./@@' | sort > $dirfiletemppath)

  packtempfile=$(mktemp $parenttmp/BUILDFILENAMES."$section".XXXXXX)
  packfiletemppath="$packtempfile"
  sort .buildlist.$section > $packfiletemppath
  
  directorycount="$( wc -l < $dirtempfile )"
  buildlistcount="$( wc -l < $packtempfile )"

  # Get number of total packages
  totalpkgnumber="$(wc -l < .buildlist.$section)"
  export totalpkgnumber

  if diff -u "$dirfiletemppath" "$packfiletemppath" > /dev/null 2>&1 ; then
    diffstatus="0"
  else
    diffstatus="1"
  fi

  if [ "$diffstatus" != "0" ]; then 
    warn "In section '"$section"', the number of packages in the hidden file '.buildlist."$section"' is different to the number of package directories. Some packages may not have been added to this file/section directory. They are listed below:"

    diff -u "$dirfiletemppath" "$packfiletemppath" || true
    diff -u "$packfiletemppath" "$dirfiletemppath" || true

    warn "Building anyways :-) "
    sleep 2
  fi
  rm -f $packfiletemppath $dirfiletemppath

  if [[ ! -f .buildlist.$section ]] ; then
    err "Section build list file '.buildlist.$section' not found!"
  fi

  while IFS="" read -r package || [[ -n $package ]] ; do
    currentpkgnumber="$(grep -Ewn "^$package" .buildlist.$section | cut -d: -f 1)"
    export currentpkgnumber
      (
        cd $package
        source $package.SMBuild
	# Check if package installer exists or is installed on the system
	# If the package installer does not exist in the set pkg destination, build it
        if [ ! -f $pkgdest/$app-$version-*-$build.* ] ; then
          bldpkg 2>&1 | tee -a $logdir/$app-$version-$build.log.txt
	  # If the package is not installed in the system, install it
          if [ ! -f /var/log/packages/$app-$version-*-$build ] ; then
            upgradepkg --install-new $pkgdest/$app-$version-*-$build.*
	  else
	    info "'$app-$version' already installed, skipping it"
          fi
        elif [ ! -f /var/log/packages/$app-$version-*-$build ] ; then
          upgradepkg --install-new $pkgdest/$app-$version-*-$build.*
        else
          info "Already built '$app-$version', skipping it"
        fi
      )
  done < ".buildlist.$section"

  cd ..

done