#!/bin/sh -e
# A hacky script to generate .t?z files using satellites.
# It's a fairly simple wrapper to astronaut, that generates pkgtools packages.

# This may also serve as an example on how you can wrap astronaut to package in any format.

# Check whether we'll use fakeroot or not
_astronaut_wrapper_fakeroot="$(command -v fakeroot || true)"
[ "$_astronaut_wrapper_fakeroot" ] && _astronaut_wrapper_fakeroot='fakeroot'

if [ ! "$_astronaut_wrapper_fakeroot" -a "$(id -u)" != "0" ]; then
    echo 'This script has to be run as root, or you need fakeroot installed.' 1>&2
    exit 1
fi

# Find astronaut
_astronaut="$(dirname "$0")/astronaut"
[ ! -f "$_astronaut" ] && _astronaut='astronaut'

# Configuration
dir_wrapper_pkgtools="$PWD"  # Where the packages should be stored

# Wrapper functions
_astronaut_wrapper_pre() {
    # Make sure to remove the contents of the install directory before building
    _nuke_dir_install=true
}

_astronaut_wrapper_post() {
    # Gzip man and info pages
    if [ -d "$dir_install/$dir_prefix/$dir_mandir" ]; then
        find "$dir_install/$dir_prefix/$dir_mandir" -type f -exec gzip -9 {} \;
        for i in $(find "$dir_install/$dir_prefix/$dir_mandir" -type l); do ln -s "$(readlink "$i").gz" "$i.gz"; rm "$i"; done
    fi
    if [ -d "$dir_install/$dir_prefix/$dir_infodir" ]; then
        rm -f "$dir_install/$dir_prefix/$dir_infodir/dir"
        gzip -9 -r "$dir_install/$dir_prefix/$dir_infodir"
    fi

    # Strip binaries
    find "$dir_install" | xargs file | grep -e "executable" -e "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null | true

    # Generate slack-desc for proper compliance, even if it's completely redundant
    #mkdir -p "$dir_install/install"
    #cat > "$dir_install/install/slack-desc" << EOF
## HOW TO EDIT THIS FILE:
## The "handy ruler" below makes it easier to edit a package description.  Line
## up the first '|' above the ':' following the base package name, and the '|'
## on the right side marks the last column you can put a character in.  You must
## make exactly 11 lines for the formatting to be correct.  It's also
## customary to leave one space after the ':'.

#$(printf %$(printf '%s' "$_satname" | wc -c)s)|-----handy-ruler------------------------------------------------------|
#$_satname: $_satname (Generated with astronautpkg)
#$_satname:
#$_satname:
#$_satname:
#$_satname:
#$_satname:
#$_satname:
#$_satname:
#$_satname:
#$_satname:
#$_satname:
#EOF

    # Move configuration files to .new and install them for proper compliance.
    if [ -d "$dir_install/$dir_prefix/$dir_sysconfdir" ]; then
        mkdir -p "$dir_install/install"
        cat > "$dir_install/install/doinst.sh" << EOF
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}
EOF

        find "$dir_install/$dir_prefix/$dir_sysconfdir" -type f -printf '%P\n' | while IFS= read file; do
            mv "$dir_install/$dir_prefix/$dir_sysconfdir/$file" "$dir_install/$dir_prefix/$dir_sysconfdir/$file.new"
            echo "config '$dir_prefix/$dir_sysconfdir/$file.new'" >> "$dir_install/install/doinst.sh"
        done
    fi

    # Create the package
    cd "$dir_install"
    mkdir -p "$dir_wrapper_pkgtools"
    PATH="$PATH:/sbin" $_astronaut_wrapper_fakeroot makepkg -l y -c n "$dir_wrapper_pkgtools/$_satname-$(echo "$version" | tr - _)-$(uname -m)-astro.txz"
}

. "$_astronaut"