#!/bin/bash

QUIET_ARG=""
[ "$1" == "--quiet" ] && QUIET_ARG="--quiet"

# Enter source directory
cd $( dirname $0 )

echo "Clean previous build..."
rm -fr dist deb_dist

echo "Fetch git tags..."
git fetch --tags

echo "Detect version using git describe..."
VERSION="$( git describe --tags )"

echo "Set version=$VERSION in setup.py using sed..."
sed -i "s/^version *=.*$/version = '$VERSION'/" setup.py

if [ -d venv ]
then
	VENV=$( realpath venv )
	echo "Use existing virtualenv $VENV to install build dependencies"
	TEMP_VENV=0
else
	VENV=$(mktemp -d)
	echo "Create a temporary virtualenv in $VENV to install build dependencies..."
	TEMP_VENV=1
	python3 -m venv $VENV
fi

echo "Install dependencies in virtualenv using pip..."
$VENV/bin/python3 -m pip install stdeb GitPython wheel $QUIET_ARG

echo "Build wheel package..."
$VENV/bin/python3 setup.py bdist_wheel

echo "Check gitdch is installed..."
GITDCH=$(which gitdch)
set -e
if [ -z "$GITDCH" ]
then
        TMP_GITDCH=$(mktemp -d)
        echo "Temporary install gitdch in $TMP_GITDCH..."
        git clone $QUIET_ARG https://gitea.zionetrix.net/bn8/gitdch.git $TMP_GITDCH/gitdch
        GITDCH=$TMP_GITDCH/gitdch/gitdch
else
        TMP_GITDCH=""
	echo "Use existing installation of gitdch ($GITDCH)"
fi

echo "Build debian source package using stdeb sdist_dsc command..."
$VENV/bin/python3 setup.py --command-packages=stdeb.command sdist_dsc \
	--package3 "python3-mylib" \
	--maintainer "Benjamin Renard <brenard@zionetrix.net>" \
	--compat 10 \
	--section net \
	--forced-upstream-version "$VERSION"

echo "Keep only debian package directory and orig.tar.gz archive..."
find deb_dist/ -maxdepth 1 -type f ! -name '*.orig.tar.gz' -delete

echo "Enter in debian package directory..."
cd deb_dist/mylib-$VERSION

echo "Retreive debian codename using lsb_release..."
DEBIAN_CODENAME=$( lsb_release -c -s )
[ $( lsb_release -r -s ) -ge 9 ] && DEBIAN_CODENAME="${DEBIAN_CODENAME}-ee"

echo "Generate debian changelog using gitdch..."
GITDCH_LOG_ARG='--verbose'
[ -n "$QUIET_ARG" ] && GITDCH_LOG_ARG='--warning'
$VENV/bin/python3 $GITDCH \
	--package-name mylib \
	--version "${VERSION}" \
	--code-name $DEBIAN_CODENAME \
	--output debian/changelog \
	--path ../../ \
	$GITDCH_LOG_ARG

echo "Add custom package name for dependencies..."
cat << EOF > debian/py3dist-overrides
cx_oracle python3-cx-oracle
EOF

[ $TEMP_VENV -eq 1 ] && echo "Clean temporary virtualenv..." && rm -fr $VENV

[ -n "$TMP_GITDCH" ] && echo "Clean temporary gitdch installation..." && rm -fr $TMP_GITDCH

echo "Build debian package..."
dpkg-buildpackage --no-sign