#!/bin/bash

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

# Enter source directory
cd $( dirname $0 )

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

if [ -n "$CI" -a $UID -eq 0 ]
then
	echo "CI environment detected, set current directory as git safe for root"
	git config --global --add safe.directory $(pwd)
fi

echo "Detect version using git describe..."
VERSION="$( git describe --tags|sed 's/^[^0-9]*//' )"

echo "Computing python version..."
if [ $( echo "$VERSION"|grep -c "-" ) -gt 0 ]
then
	echo "Development version detected ($VERSION), compute custom python dev version"
	PY_VERSION="$( echo "$VERSION"|sed 's/-\([0-9]\)\+-.*$/.dev\1/' )"
else
	echo "Clean tagged version detected, use it"
	PY_VERSION="$VERSION"
fi

echo "Set version=$PY_VERSION in setup.py using sed..."
sed -i "s/^version *=.*$/version = '$PY_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 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 $TMP_GITDCH/gitdch
        GITDCH="$VENV/bin/python3 $TMP_GITDCH/gitdch/gitdch"
	echo "Install gitdch dependencies in $VENV..."
	$VENV/bin/python3 -m pip install GitPython $QUIET_ARG
else
        TMP_GITDCH=""
	echo "Use existing installation of gitdch ($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

if [ -z "$DEBIAN_CODENAME" ]
then
	echo "Retrieve debian codename using lsb_release..."
	DEBIAN_CODENAME=$( lsb_release -c -s )
	[ $( lsb_release -r -s ) -ge 9 ] && DEBIAN_CODENAME="${DEBIAN_CODENAME}-ee"
else
	echo "Use debian codename from environment ($DEBIAN_CODENAME)"
fi

# Compute debian package version
DEB_VERSION_SUFFIX="-1"
DEB_VERSION="$VERSION$DEB_VERSION_SUFFIX"

echo "Generate debian changelog using gitdch..."
GITDCH_ARGS=('--verbose')
[ -n "$QUIET_ARG" ] && GITDCH_ARGS=('--warning')
if [ -n "$MAINTAINER_NAME" ]
then
	echo "Use maintainer name from environment ($MAINTAINER_NAME)"
	GITDCH_ARGS+=("--maintainer-name" "${MAINTAINER_NAME}")
fi
if [ -n "$MAINTAINER_EMAIL" ]
then
	echo "Use maintainer email from environment ($MAINTAINER_EMAIL)"
	GITDCH_ARGS+=("--maintainer-email" "$MAINTAINER_EMAIL")
fi
$GITDCH \
	--package-name mylib \
	--version "${DEB_VERSION}" \
	--version-suffix "${DEB_VERSION_SUFFIX}" \
	--code-name $DEBIAN_CODENAME \
	--output debian/changelog \
	--release-notes ../../dist/release_notes.md \
	--path ../../ \
	--exclude "^CI: " \
	--exclude "^Docker: " \
	--exclude "^pre-commit: " \
	--exclude "\.?woodpecker(\.yml)?" \
	--exclude "build(\.sh)?" \
	--exclude "tests(\.sh)?" \
	--exclude "README(\.md)?" \
	--exclude "^Merge branch " \
	"${GITDCH_ARGS[@]}"

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