#!/usr/bin/env bash

#

# makebundle -- re-package with add-on components

## global settings

TMP="/var/tmp/isabelle-makebundle$$"

## diagnostics

PRG=$(basename "$0")

function usage()

{

  echo

  echo "Usage: $PRG ARCHIVE COMPONENTS"

  echo

  echo "  Re-package Isabelle distribution with add-on components."

  echo

  exit 1

}

function fail()

{

  echo "$1" >&2

  exit 2

}

## process command line

[ "$#" -lt 1 ] && usage

ARCHIVE="$1"; shift

declare -a COMPONENTS

COMPONENTS=("$@")

## main

mkdir "$TMP" || fail "Cannot create directory $TMP"

ARCHIVE_DIR="$(cd $(dirname "$ARCHIVE"); echo "$PWD")"

ISABELLE_NAME="$(basename "$ARCHIVE" .tar.gz)"

ISABELLE_HOME="$TMP/$ISABELLE_NAME"

[ ! -f "$ARCHIVE" ] && fail "Bad archive file $ARCHIVE"

tar -C "$TMP" -x -z -f "$ARCHIVE"

echo "#bundled components" >> "$ISABELLE_HOME/etc/components"

for COMPONENT in "${COMPONENTS[@]}"

do

  tar -C "$ISABELLE_HOME/contrib" -x -z -f "$COMPONENT"

  NAME="$(basename "$COMPONENT" .tar.gz)"

  [ -d "$ISABELLE_HOME/contrib/$NAME" ] || fail "Bad archive content $COMPONENT"

  if [ -e "$ISABELLE_HOME/contrib/$NAME/etc/settings" ]; then

    echo "component $NAME"

    echo "contrib/$NAME" >> "$ISABELLE_HOME/etc/components"

  else

    echo "package $NAME"

  fi

done

tar -C "$TMP" -c -z \

  -f "${ARCHIVE_DIR}/${ISABELLE_NAME}_bundle.tar.gz" \

  Isabelle "$ISABELLE_NAME"

# clean up

cd /tmp

rm -rf "$TMP"