#!/bin/bash
# Slackware build script for snap-slack

# Set up variables
PRGNAM=snap-slack
VERSION=1.0
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=${TMP}/package-${PRGNAM}
OUTPUT=${OUTPUT:-/tmp}

# Determine architecture (noarch for Python script)
ARCH=noarch

# Create directories
rm -rf $PKG
mkdir -p $PKG/usr/bin
mkdir -p $PKG/usr/share/$PRGNAM/hooks
mkdir -p $PKG/etc/$PRGNAM
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/examples
mkdir -p $PKG/var/log
mkdir -p $PKG/install

# Copy program files
cp $CWD/src/snap-slack.py $PKG/usr/bin/snap-slack
chmod 0755 $PKG/usr/bin/snap-slack

# Copy hook files
cp $CWD/hooks/install-hooks.sh $PKG/usr/share/$PRGNAM/hooks/
cp $CWD/hooks/pre-install.sh $PKG/usr/share/$PRGNAM/hooks/
cp $CWD/hooks/post-install.sh $PKG/usr/share/$PRGNAM/hooks/
chmod 0755 $PKG/usr/share/$PRGNAM/hooks/*.sh

# Copy configuration file as a .new file to prevent overwriting user's config
cp $CWD/config.toml $PKG/etc/$PRGNAM/config.toml.new
chmod 0644 $PKG/etc/$PRGNAM/config.toml.new

# Copy example configuration files
cp $CWD/docs/config-examples/config-*.toml $PKG/usr/doc/$PRGNAM-$VERSION/examples/
chmod 0644 $PKG/usr/doc/$PRGNAM-$VERSION/examples/*

# Create an empty log file
touch $PKG/var/log/snap-slack.log.new
chmod 0644 $PKG/var/log/snap-slack.log.new

# Copy documentation 
cp $CWD/docs/README.md $PKG/usr/doc/$PRGNAM-$VERSION/
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# Create doinst.sh for handling .new files and running post-install actions
cat > $PKG/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...
}

# Handle config files
config etc/$PRGNAM/config.toml.new
config var/log/snap-slack.log.new

# Suggest installing hooks
echo ""
echo "To install SlackPkg hooks for automatic snapshots, run:"
echo "  snap-slack install-hooks"
echo ""
EOF

# Create the Slackware package description
cat << EOF > $PKG/install/slack-desc
# 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 ':' except on otherwise blank lines.

          |-----handy-ruler------------------------------------------------------|
$PRGNAM: $PRGNAM (BTRFS snapshot manager with bootloader integration)
$PRGNAM:
$PRGNAM: Snap-Slack is a comprehensive utility for managing Btrfs snapshots on
$PRGNAM: Slackware Linux. It provides functionality to create snapshots, manage
$PRGNAM: existing snapshots, clean up old snapshots, and adopt snapshots as the
$PRGNAM: new root subvolume. The tool also integrates with ELILO and GRUB 
$PRGNAM: bootloaders, supports encrypted volumes, and has hibernation support.
$PRGNAM: It can also automatically create snapshots before package operations.
$PRGNAM:
$PRGNAM: Version: $VERSION
$PRGNAM: Homepage: https://git.bernardomagri.eu/bernardo/snap-slack/
EOF

# Build the package
cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.txz