#
# Release script library
#
# Copyright (c) 2012-2024 Michael Buesch <m@bues.ch>
#
# Licensed under the Apache License version 2.0
# or the MIT license, at your option.
# SPDX-License-Identifier: Apache-2.0 OR MIT


default_hook_pre_checkout()
{
	true
}

default_hook_post_checkout()
{
	cd "$1"
	find "$1" \( \
		\( -name 'makerelease*' \) -o \
		\( -name '.git*' \) \
	\) -print0 | xargs -0 rm -r
}


default_hook_pre_relocate_checkout()
{
	true
}

default_hook_post_relocate_checkout()
{
	true
}

default_hook_pre_documentation()
{
	true
}

default_hook_post_documentation()
{
	true
}

default_hook_pre_archives()
{
	true
}

default_hook_post_archives()
{
	true
}

default_hook_pre_doc_archives()
{
	true
}

default_hook_doc_archives()
{
	info "By default no documentation archives are created."
	info "Please override hook_doc_archives."
}

default_hook_post_doc_archives()
{
	true
}

default_hook_testbuild()
{
	cd "$1"
	if ! echo "$conf_testbuild" | grep -q no-configure &&\
	   [ -x ./configure ]; then
		./configure
	fi
	if ! echo "$conf_testbuild" | grep -q no-cmake &&\
	   [ -r ./CMakeLists.txt ]; then
		cmake .
	fi
	if ! echo "$conf_testbuild" | grep -q no-make &&\
	   [ -r ./GNUmakefile -o -r ./makefile -o -r ./Makefile ]; then
		make
	fi
	if ! echo "$conf_testbuild" | grep -q no-setuppy &&\
	   [ -x ./setup.py ]; then
		./setup.py --no-user-cfg build
	fi
	if [ -r ./Cargo.toml ]; then
		if ! echo "$conf_testbuild" | grep -q no-cargo-build; then
			info "Running cargo DEBUG build"
			do_cargo build
			info "Running cargo RELEASE build"
			do_cargo build --release
		fi
		if ! echo "$conf_testbuild" | grep -q no-cargo-examples; then
			info "Running cargo EXAMPLES build"
			do_cargo build --examples
			info "Running cargo EXAMPLES RELEASE build"
			do_cargo build --examples --release
		fi
		if ! echo "$conf_testbuild" | grep -q no-cargo-clippy; then
			info "Running cargo CLIPPY"
			do_cargo clippy -- --deny warnings
			if ! echo "$conf_testbuild" | grep -q no-cargo-tests; then
				info "Running cargo CLIPPY on tests"
				do_cargo clippy --tests -- --deny warnings
			fi
			if ! echo "$conf_testbuild" | grep -q no-cargo-examples; then
				info "Running cargo CLIPPY on examples"
				do_cargo clippy --examples -- --deny warnings
			fi
		fi
		if ! echo "$conf_testbuild" | grep -q no-cargo-audit; then
			info "Running cargo AUDIT"
			do_cargo audit --deny warnings
		fi
	fi
}

default_hook_regression_tests()
{
	cd "$1"
	if [ -r ./Cargo.toml ]; then
		do_cargo test
		do_cargo test --examples
	fi
}

default_hook_pre_archive_signatures()
{
	true
}

default_hook_post_archive_signatures()
{
	true
}

default_hook_pre_tag()
{
	true
}

default_hook_post_tag()
{
	true
}

default_hook_pre_move_files()
{
	true
}

default_hook_post_move_files()
{
	true
}

default_hook_get_version()
{
	die "ERROR: Must supply hook_get_version()"
}

default_hook_pre_upload()
{
	true
}

default_hook_post_upload()
{
	true
}

default_hook_pre_debian_packages()
{
	true
}

default_hook_post_debian_packages()
{
	true
}

# Assign default hooks to actual hooks
hook_pre_checkout()		{ default_hook_pre_checkout "$@"; }
hook_post_checkout()		{ default_hook_post_checkout "$@"; }
hook_pre_relocate_checkout()	{ default_hook_pre_relocate_checkout "$@"; }
hook_post_relocate_checkout()	{ default_hook_post_relocate_checkout "$@"; }
hook_pre_documentation()	{ default_hook_pre_documentation "$@"; }
hook_post_documentation()	{ default_hook_post_documentation "$@"; }
hook_pre_archives()		{ default_hook_pre_archives "$@"; }
hook_post_archives()		{ default_hook_post_archives "$@"; }
hook_pre_doc_archives()		{ default_hook_pre_doc_archives "$@"; }
hook_doc_archives()		{ default_hook_doc_archives "$@"; }
hook_post_doc_archives()	{ default_hook_post_doc_archives "$@"; }
hook_testbuild()		{ default_hook_testbuild "$@"; }
hook_regression_tests()		{ default_hook_regression_tests "$@"; }
hook_pre_archive_signatures()	{ default_hook_pre_archive_signatures "$@"; }
hook_post_archive_signatures()	{ default_hook_post_archive_signatures "$@"; }
hook_pre_tag()			{ default_hook_pre_tag "$@"; }
hook_post_tag()			{ default_hook_post_tag "$@"; }
hook_pre_move_files()		{ default_hook_pre_move_files "$@"; }
hook_post_move_files()		{ default_hook_post_move_files "$@"; }
hook_get_version()		{ default_hook_get_version "$@"; }
hook_pre_upload()		{ default_hook_pre_upload "$@"; }
hook_post_upload()		{ default_hook_post_upload "$@"; }
hook_pre_debian_packages()	{ default_hook_pre_debian_packages "$@"; }
hook_post_debian_packages()	{ default_hook_post_debian_packages "$@"; }

cleanup()
{
	if [ -d "$tmpdir" ]; then
		if [ $opt_keeptmp -eq 0 ]; then
			rm -rf "$tmpdir"
		else
			info "Keeping temporary directory '$tmpdir' in place."
		fi
	fi
}

# $1=code
abort()
{
	cleanup
	exit $1
}

# $*=message
die()
{
	echo "$*"
	abort 1
}

terminating_signal()
{
	die "Terminating signal received"
}

# $*=message
info()
{
	echo "--- $*"
}

# $*=message
warn()
{
	echo "--- WARNING: $*" >&2
}

is_dry_run()
{
	[ $opt_dryrun -ne 0 ]
}

dry_run_prefix()
{
	is_dry_run && echo -n "echo dry-run " || true
}

# $1=program_name, $2+=program_args
dry_run()
{
	$(dry_run_prefix) "$@"
}

# $1=program_name
have_program()
{
	which "$1" >/dev/null 2>&1
}

# $1=program_name, ($2=description)
assert_program()
{
	local bin="$1"
	local desc="$2"
	[ -n "$desc" ] || desc="$bin"
	have_program "$bin" || die "$bin not found. Please install $desc."
}

# $1=path_to_git_repo
git_main_branch()
{
	if GIT_DIR="$1" git branch | grep -qE '^\*? ?main$'; then
		echo "main"
	else
		echo "master"
	fi
}

# $1=hook_name, $2+=hook_parameters
execute_hook()
{
	local hook_name="hook_$1"
	local oldpwd="$(pwd)"
	shift
	set -e
	eval $hook_name "$@"
	set +e
	if [ "$(pwd)" != "$oldpwd" ]; then
		cd "$oldpwd" || die "execute_hook: Failed to switch back to old PWD '$oldpwd'"
	fi
}

maketemp()
{
	local suffix="$1"

	mktemp --suffix="$suffix" --tmpdir="$tmpdir" "makerelease-tmpfile.XXXXXXXX"
}

detect_repos_type()
{
	[ -z "$repos_type" -a -d "$srcdir/.git" ] && repos_type=git
	[ -z "$repos_type" ] && repos_type=none
	case "$repos_type" in
		none|git) ;; # ok
		*) die "Invalid \$repos_type=$repos_type" ;;
	esac
}

do_cargo()
{
	local command="$1"
	shift

	local opt_package=
	[ "$command" != "audit" -a -n "$conf_package" ] &&\
		opt_package="--package $conf_package"

	info cargo "$command" $opt_package "$@"
	cargo "$command" $opt_package "$@"
}

cargo_local_pkg_version()
{
	local package="$1"

	local opt_package=
	[ -n "$package" ] && opt_package="--package $package $package"

	local pkgid="$(cargo pkgid --offline $opt_package | cut -d'#' -f2)"
	if echo "$pkgid" | grep -qe '@'; then
		echo "$pkgid" | cut -d'@' -f2
	else
		echo "$pkgid" | cut -d'#' -f2
	fi
}

local_pkg_version()
{
	if [ -e "$srcdir/$srcsubdir/Cargo.toml" ]; then
		cargo_local_pkg_version "$@"
	else
		die "local_pkg_version() is currently only supported in cargo projects."
	fi
}

make_checkout()
{
	checkout_dir="$tmpdir/$project-checkout"
	mkdir -p "$checkout_dir" || die "Failed to make checkout dir"
	execute_hook pre_checkout "$checkout_dir"
	case "$repos_type" in
	none)
		info "Copying source tree"
		cp -r "$srcdir" "$checkout_dir" || \
			die "Failed to copy source tree"
		;;
	git)
		info "Creating git checkout"
		assert_program git
		local branch="$(git_main_branch "$srcdir/.git")"
		[ -n "$opt_ref" ] && branch="$opt_ref"
		export GIT_DIR="$checkout_dir/.git"
		git clone --recursive --shared --no-checkout \
			"$srcdir/.git" "$checkout_dir" || \
			die "Failed to clone git repository"
		cd "$checkout_dir" || die "Internal error: cd"
		git checkout -b "__tmp_makerelease-$branch" "$branch" || \
			die "git checkout failed (1)"
		git checkout -f || \
			die "git checkout failed (2)"
		if [ -f "$checkout_dir/.gitmodules" ]; then
			git submodule update --init --recursive || \
				die "git submodule update failed."
		fi
		;;
	*)
		die "checkout: Unknown repos_type"
		;;
	esac
	execute_hook post_checkout "$checkout_dir"
}

detect_versioning()
{
	version=
	release_name=
	execute_hook get_version "$checkout_dir/$srcsubdir"
	[ -n "$(echo "$version" | tr -d '.[:blank:]')" ] ||\
		die "\$version not set correctly in hook_get_version()"
	version="${version}${opt_extraversion}"
	[ -n "$release_name" ] || release_name="$project-$version"
}

relocate_checkout()
{
	execute_hook pre_relocate_checkout "$tmpdir" "$checkout_dir"
	local new_checkout_dir="$tmpdir/$release_name"
	mv "$checkout_dir/$srcsubdir" "$new_checkout_dir" || \
		die "Failed to relocate checkout"
	rm -rf "$checkout_dir"
	checkout_dir="$new_checkout_dir"
	execute_hook post_relocate_checkout "$tmpdir" "$checkout_dir"
}

make_debian_packages()
{
	[ $opt_nodebian -eq 0 ] || return
	[ $opt_nobuild -eq 0 ] || return
	[ -d "$checkout_dir/debian" ] || return

	info "Creating Debian packages"
	if ! have_program debuild; then
		warn "No 'debuild' available. Skipping Debian build."
		return
	fi
	grep -qe quilt "$checkout_dir/debian/source/format" &&\
		die "Debian package format 'quilt' is not supported."

	local ver_without_suffix="$(printf '%s' "$version" | grep -oEe '[^\-]+' | head -n1)"
	grep -qEe "${project}"'\s*\(\s*'"${ver_without_suffix}" \
		"$checkout_dir/debian/changelog" ||\
		die "Debian changelog does not contain the version $version."

	local debuild_dir="${checkout_dir}_debuild"
	cp -a "$checkout_dir" "$debuild_dir" ||\
		die "Failed to copy checkout_dir for debuild."

	execute_hook pre_debian_packages "$debuild_dir"

	cd "$debuild_dir" || die "Failed to cd to debuild_dir"

	local debuild_opts=
	if [ $opt_nosign -eq 0 -a -n "$DEB_SIGN_KEYID" ]; then
		info "(Signing Debian packages with key '$DEB_SIGN_KEYID', from DEB_SIGN_KEYID)"
		local debuild_opts="-k$DEB_SIGN_KEYID"
	elif [ $opt_nosign -eq 0 -a -n "$GPG_KEY_RELEASE" ]; then
		info "(Signing Debian packages with key '$GPG_KEY_RELEASE', from GPG_KEY_RELEASE)"
		local debuild_opts="-k$GPG_KEY_RELEASE"
	else
		info "(Creating unsigned Debian packages)"
		local debuild_opts="-uc -us"
	fi
	CFLAGS= CPPFLAGS= CXXFLAGS= LDFLAGS= debuild $debuild_opts ||\
		die "Failed to build debian package"

	local deb_archive_dir="$archive_dir/debian"
	mkdir -p "$deb_archive_dir" ||\
		die "Failed to create Debian archive directory"
	mv "$debuild_dir/../"*.deb "$deb_archive_dir/" ||\
		die "Failed to move .deb files to archive directory"
	mv "$debuild_dir/../"*.dsc "$deb_archive_dir/" ||\
		die "Failed to move .dsc files to archive directory"
	mv "$debuild_dir/../"*.changes "$deb_archive_dir/" ||\
		die "Failed to move .changes files to archive directory"

	execute_hook post_debian_packages "$debuild_dir" "$deb_archive_dir"
}

_gendoc_md_html()
{
	local md="$1"

	local docname="$(basename "$md" .md)"
	local dir="$(dirname "$md")"
	local html="$dir/$docname.html"
	local tmpfile="$(maketemp .md)"

	echo "Generating $docname.md -> $docname.html ..."
	sed -e 's|\.md)|.html)|g' "$md" > "$tmpfile" ||\
		die "Failed to update links during markdown -> html"
	pandoc -s -M "title=$docname" -o "$html" "$tmpfile" ||\
		die "Failed to convert markdown -> html"
}

_gendoc_rst_md()
{
	local rst="$1"

	local docname="$(basename "$rst" .rst)"
	local dir="$(dirname "$rst")"
	local md="$dir/$docname.md"
	local tmpfile="$(maketemp .rst)"

	echo "Generating $docname.rst -> $docname.md ..."
	sed -e 's|\.rst>`_|.md>`_|g' "$rst" > "$tmpfile" ||\
		die "Failed to update links during reStructuredText -> markdown"
	pandoc -s -M "title=$docname" -o "$md" "$tmpfile" ||\
		die "Failed to convert reStructuredText -> markdown"
}

_gendoc_rst_html()
{
	local rst="$1"

	local docname="$(basename "$rst" .rst)"
	local dir="$(dirname "$rst")"
	local html="$dir/$docname.html"
	local tmpfile="$(maketemp .rst)"

	echo "Generating $docname.rst -> $docname.html ..."
	sed -e 's|\.rst>`_|.html>`_|g' "$rst" > "$tmpfile" ||\
		die "Failed to update links during reStructuredText -> html"
	pandoc -s -M "title=$docname" -o "$html" "$tmpfile" ||\
		die "Failed to convert reStructuredText -> html"
}

make_documentation()
{
	[ $opt_nodoc -eq 0 ] || return

	info "Creating documentation"

	assert_program pandoc "pandoc converter"

	execute_hook pre_documentation "$checkout_dir"

	local old_IFS="$IFS"
	IFS='
'

	# Build markdown -> html
	for file in $(find "$checkout_dir" -name '*.md'); do
		_gendoc_md_html "$file"
	done

	# Build reStructuredText -> markdown
	for file in $(find "$checkout_dir" -name '*.rst'); do
		_gendoc_rst_md "$file"
	done

	# Build reStructuredText -> html
	for file in $(find "$checkout_dir" -name '*.rst'); do
		_gendoc_rst_html "$file"
	done

	IFS="$old_IFS"

	execute_hook post_documentation "$checkout_dir"
}

make_archives()
{
	archive_dir="$tmpdir/$project-archives"
	mkdir -p "$archive_dir" || die "Failed to create archive directory"

	setup_py_targets=

	info "Creating archives"

	execute_hook pre_archives "$archive_dir" "$checkout_dir"

	for artype in $opt_archives; do
		local archive=
		local compressor=
		case "$artype" in
		tar)
			archive="$release_name.tar"
			;;
		tar.bz2)
			compressor="bzip2 -9"
			archive="$release_name.tar.bz2"
			;;
		tar.gz)
			compressor="gzip -9"
			archive="$release_name.tar.gz"
			;;
		tar.xz)
			compressor="xz -9"
			archive="$release_name.tar.xz"
			;;
		tar.zst)
			compressor="zstd -T0 -19"
			archive="$release_name.tar.zst"
			;;
		zip)
			archive="$release_name.zip"
			;;
		7z)
			archive="$release_name.7z"
			;;
		py-*)
			local target="$(echo "$artype" | sed -e 's/py-//' | tr '-' '_')"
			setup_py_targets="$setup_py_targets $target"
			continue # Python archives are handled later
			;;
		*)
			die "Internal error: archive type: $artype"
			;;
		esac

		info "Creating $archive"
		cd "$tmpdir" || die "Internal error: cd"
		case "$artype" in
		zip)
			zip -9 -r "$archive" "$release_name" || \
				die "Failed to create ZIP archive"
			;;
		7z)
			"$SEVENZIP" -mx=9 a "$archive" "$release_name" || \
				die "Failed to create 7-ZIP archive"
			;;
		tar)
			tar \
				--numeric-owner --owner=0 --group=0 \
				--mtime='1970-01-01 00:00Z' \
				--sort=name \
				-c "$release_name" \
				> "$archive" || \
				die "Failed to create tarball"
			;;
		tar.*)
			tar \
				--numeric-owner --owner=0 --group=0 \
				--mtime='1970-01-01 00:00Z' \
				--sort=name \
				-c "$release_name" \
				| $compressor \
				> "$archive" || \
				die "Failed to create tarball"
			;;
		*)
			die "Internal error: Archive type"
			;;
		esac
		mv "$archive" "$archive_dir"/ || die "Failed to move archive"
	done

	# Handle Python build targets
	[ -f "./setup.py" ] && [ $opt_upload -ne 0 ] && setup_py_targets="$setup_py_targets sdist_gz"
	if [ -n "$setup_py_targets" ]; then
		cd "$checkout_dir" || die "Internal error: cd"
		[ -x "./setup.py" ] ||\
			die "Used Python archive target, but no executable setup.py found"
		rm -rf ./dist/ || die "Failed to delete ./dist/"
		mkdir "$archive_dir/python" || die "Failed to create Python archive subdir"
		local have_bdist_wininst=0
		local have_sdist=0
		local have_sdist_bz2=0
		local have_sdist_xz=0
		local have_sdist_zip=0
		for target in $setup_py_targets; do
			info "Building Python $target-package"
			local opts=
			local setup_target="$target"
			local doit=0
			if [ "$target" = "bdist_wininst" ]; then
				[ $have_bdist_wininst -ne 0 ] && continue
				local have_bdist_wininst=1
				local opts="--plat-name win32"
				local doit=1
			elif [ "$target" = "sdist" -o "$target" = "sdist_gz" ]; then
				[ $have_sdist -ne 0 ] && continue
				local have_sdist=1
				local setup_target="sdist"
				local opts="--formats=gztar --owner=root --group=root"
				local doit=1
			elif [ "$target" = "sdist_bz2" ]; then
				[ $have_sdist_bz2 -ne 0 ] && continue
				local have_sdist_bz2=1
				local setup_target="sdist"
				local opts="--formats=bztar --owner=root --group=root"
				local doit=1
			elif [ "$target" = "sdist_xz" ]; then
				[ $have_sdist_xz -ne 0 ] && continue
				local have_sdist_xz=1
				local setup_target="sdist"
				local opts="--formats=xztar --owner=root --group=root"
				local doit=1
			elif [ "$target" = "sdist_zip" ]; then
				[ $have_sdist_zip -ne 0 ] && continue
				local have_sdist_zip=1
				local setup_target="sdist"
				local opts="--formats=zip"
				local doit=1
			fi
			if [ $doit -ne 0 ]; then
				./setup.py --no-user-cfg "$setup_target" $opts ||\
					die "Failed to build Python archive"
			fi
		done
		mv ./dist/* "$archive_dir/python/" || die "Failed to move Python archives"
		rmdir ./dist/ || die "Failed to delete ./dist/"
	fi

	execute_hook post_archives "$archive_dir" "$checkout_dir"
}

make_documentation_archives()
{
	[ $opt_nodoc -eq 0 ] || return

	info "Packing documentation archives"

	execute_hook pre_doc_archives "$archive_dir" "$checkout_dir"
	execute_hook doc_archives "$archive_dir" "$checkout_dir"
	execute_hook post_doc_archives "$archive_dir" "$checkout_dir"
}

cratesio_has_version()
{
	local package="$1"
	local ver="$2"

	local package_opt="$package"
	[ -z "$package_opt" ] && package_opt="$project"

	curl -s "https://crates.io/api/v1/crates/$package/$ver" |\
		grep -qe 'created_at'
}

do_cargo_publish()
{
	local package="$1"

	local package_opt=
	[ -n "$package" ] && package_opt="--package $package"

	local dry=
	is_dry_run && dry="--dry-run"

	local ver="$(local_pkg_version "$package")"
	[ -n "$ver" ] || die "Failed to get local version"

	if cratesio_has_version "$package" "$ver"; then
		info "crates.io already has $package-$ver. Not uploading."
		return
	fi

	info "Uploading $package version $ver"

	execute_hook pre_upload "$checkout_dir" "$package"
	cargo publish --allow-dirty $dry $package_opt || die "cargo publish failed."
	execute_hook post_upload "$checkout_dir" "$package"
}

make_upload()
{
	[ $opt_upload -eq 0 ] && return

	if [ -f "$checkout_dir/setup.py" ]; then
		# This is is a Python package.
		[ -n "$setup_py_targets" ] ||\
			die "PyPi-upload requested, but no Python packages have been built."
		info "Uploading $setup_py_targets archives to PyPi"
		assert_program twine

		local py_archive_dir="$archive_dir/python"
		execute_hook pre_upload "$checkout_dir" "$py_archive_dir"
		twine check "$py_archive_dir"/*.tar.gz* ||\
			die "twine check failed"
		dry_run twine upload --repository pypi "$py_archive_dir"/*.tar.gz* ||\
			die "twine upload failed"
		execute_hook post_upload "$checkout_dir" "$py_archive_dir"
	elif [ -f "$checkout_dir/Cargo.toml" ]; then
		# This is a rust/cargo package.
		info "Uploading archive to crates.io"
		assert_program cargo

		cd "$checkout_dir" || die "Internal error: cd"
		if [ -n "$conf_upload_packages" ]; then
			for package in $conf_upload_packages; do
				do_cargo_publish "$package"
			done
		else
			do_cargo_publish ""
		fi
	else
		die "upload: Unknown package format."
	fi
}

make_testbuild()
{
	[ $opt_nobuild -eq 0 ] || return
	info "Running test build"
	execute_hook testbuild "$checkout_dir"
}

make_regression_tests()
{
	[ $opt_nobuild -eq 0 ] || return
	[ $opt_notests -eq 0 ] || return
	info "Running regression tests"
	execute_hook regression_tests "$checkout_dir"
}

# $1=directory
gpg_sign_dir_recursive()
{
	local dir="$1"

	# Don't sign files in the debian directory
	[ "$(basename "$dir")" = "debian" ] && return

	local path=
	for path in "$dir"/*; do
		if [ -d "$path" ]; then
			gpg_sign_dir_recursive "$path"
			continue
		fi
		[ -r "$path" ] || die "Sign: File not readable: $path"

		local filename="$(basename "$path")"
		local signature="$filename.asc"

		info "Creating signature $signature"
		cd "$dir" || die "Internal error: cd"
		local gpg=gpg
		have_program gpg2 && gpg=gpg2
		assert_program $gpg "GNU Privacy Guard"
		local gpg_opts=
		[ -n "$GPG_KEY_RELEASE" ] && gpg_opts="--default-key $GPG_KEY_RELEASE"
		$gpg $gpg_opts -ab "./$filename" || die "Failed to sign $filename"
	done
}

make_archive_signatures()
{
	[ $opt_nosign -ne 0 ] && return

	execute_hook pre_archive_signatures "$archive_dir"
	gpg_sign_dir_recursive "$archive_dir"
	execute_hook post_archive_signatures "$archive_dir"
}

do_git_tag()
{
	local tag_name="$1"
	local tag_message="$2"

	assert_program git

	local opts=
	if [ $opt_nosign -eq 0 ]; then
		if [ -n "$GPG_KEY_RELEASE" ]; then
			opts="$opts -u $GPG_KEY_RELEASE"
		else
			opts="$opts -s" # default key
		fi
	else
		opts="$opts -a" # unsigned
	fi

	local branch="$(git_main_branch "$srcdir/.git")"
	[ -n "$opt_ref" ] && branch="$opt_ref"

	export GIT_DIR="$srcdir/.git"

	if git tag --list | grep -qe "^$tag_name\$"; then
		warn "Tag '$tag_name' does already exist. Skipping..."
	else
		execute_hook pre_tag "$srcdir" "$tag_name"
		dry_run git tag $opts -m "$tag_message" "$tag_name" "$branch"
		execute_hook post_tag "$srcdir" "$tag_name"
	fi
}

make_tag()
{
	[ $conf_notag -ne 0 ] && return
	[ $opt_notag -ne 0 ] && return
	[ "$repos_type" = "none" ] && return

	info "Tagging repository"

	cd "$srcdir" || die "Internal error: cd"

	if [ -n "$conf_upload_packages" ]; then
		local tag_bases="$conf_upload_packages"
	else
		local tag_bases="$project"
	fi

	for tag_base in $tag_bases; do
		if [ -n "$conf_upload_packages" ]; then
			local ver="$(local_pkg_version "$tag_base")"
		else
			local ver="$version"
		fi

		local tag_name="$tag_base-$ver"
		local tag_message="$tag_base-$ver release"

		case "$repos_type" in
		git)
			do_git_tag "$tag_name" "$tag_message"
			;;
		*)
			die "tagging: Unknown repos_type"
			;;
		esac
	done
}

move_files()
{
	local target_dir="$srcdir/$srcsubdir/release-archives"

	info "Moving files"
	execute_hook pre_move_files "$archive_dir" "$srcdir/$srcsubdir"

	dry_run mkdir -p "$target_dir" || die "Failed to create target directory"
	dry_run cp -r "$archive_dir"/* "$target_dir"/ || \
		die "Failed to copy tarballs"

	execute_hook post_move_files "$archive_dir" "$srcdir/$srcsubdir"

	local dry=
	is_dry_run && dry=" (DRY RUN)"
	echo
	info "Built $project release ${version}${dry}"
}

help()
{
	echo "Usage: $0 [OPTIONS]"
	echo
	echo "Environment:"
	echo "  MAKERELEASE_LIB       May be set to makerelease.lib"
	echo
	echo "Options:"
	echo "  -y|--dry-run          Do not make persistent changes"
	echo "  -t|--no-tag           Do not create the repository tag"
	echo "  -s|--no-sign          Do not sign"
	echo "  -b|--no-build         Do not run build. (Implies -T)"
	echo "  -T|--no-tests         Do not run regression tests"
	echo "  -q|--quick            Quick run. Equivalent to -t -s -b -T -d"
	echo "  -D|--no-doc           Do not build documentation"
	echo "  -r|--ref REF          Checkout version control reference REF"
	echo "  -a|--archives TYPE,TYPE,...   Archive type list. Default: $default_archives"
	echo "                        Possible types: tar, tar.bz2, tar.gz, tar.xz, tar.zst, zip, 7z"
	echo "                        For Python programs: py-sdist,"
	echo "                                             py-sdist-gz, py-sdist-bz2, py-sdist-xz, py-dist-zip,"
	echo "                                             py-bdist, py-bdist-wininst,"
	echo "                                             py-bdist-dumb, py-bdist-rpm"
	echo "  -d|--no-debian        Do not build Debian packages."
	echo "  -U|--upload           Upload the archives to PyPi or crates.io"
	echo "  -O|--upload-only      Run the bare minimum to upload only."
	echo "                        Equivalent to: -U -t -b -T -d"
	echo "  -V|--extraversion XX  Append XX to version string"
	echo "  -K|--keep-tmp         Do not delete temporary files"
	echo "  -h|--help             Show this help text"
}

# This is the main function called from the main script.
# Parameters to this functions must be the main script arguments.
makerelease()
{
	# Backwards compatibility for old default_compress option
	[ -n "$default_compress" -a -z "$default_archives" ] && default_archives="$default_compress"

	[ -n "$project" ] || die "\$project variable not set"
	[ -n "$srcdir" ] || die "\$srcdir variable not set"
	[ -n "$srcsubdir" ] || srcsubdir=""
	[ -n "$conf_package" ] || conf_package=""
	[ -n "$conf_upload_packages" ] || conf_upload_packages="$conf_package"
	[ -n "$tmp_basedir" ] || tmp_basedir="/tmp"
	[ -n "$default_archives" ] || default_archives="tar.xz"
	[ -n "$conf_testbuild" ] || conf_testbuild=""
	[ -n "$conf_notag" ] || conf_notag=0

	trap terminating_signal TERM INT
	trap cleanup EXIT

	# Reproducible builds.
	export PYTHONHASHSEED=1
	export SOURCE_DATE_EPOCH=0

	local template="makerelease-$project.XXXXXXXX"
	tmpdir="$(mktemp -d --tmpdir="$tmp_basedir" "$template")"
	[ -d "$tmpdir" ] || die "Failed to create temporary directory"

	if have_program 7z; then
		SEVENZIP=7z
	elif have_program 7zz; then
		SEVENZIP=7zz
	else
		die "Program 7-Zip not found"
	fi
	assert_program curl

	opt_dryrun=0
	opt_notag=0
	opt_nosign=0
	opt_nobuild=0
	opt_nodebian=0
	opt_notests=0
	opt_nodoc=0
	opt_ref=
	opt_archives="$default_archives"
	opt_upload=0
	opt_extraversion=
	opt_keeptmp=0

	while [ $# -ge 1 ]; do
		case "$1" in
		--help|-h)
			help "$@"
			abort 0
			;;
		-y|--dry-run)
			opt_dryrun=1
			;;
		-t|--no-tag)
			opt_notag=1
			;;
		-s|--no-sign)
			opt_nosign=1
			;;
		-b|--no-build)
			opt_nobuild=1
			;;
		-T|--no-tests)
			opt_notests=1
			;;
		-q|--quick)
			opt_notag=1
			opt_nosign=1
			opt_nobuild=1
			opt_nodebian=1
			opt_notests=1
			;;
		-D|--no-doc)
			opt_nodoc=1
			;;
		-r|--ref)
			shift
			opt_ref=$1
			[ -n "$opt_ref" ] || die "Invalid --ref"
			;;
		-a|--archives)
			shift
			opt_archives="$1"
			;;
		-d|--no-debian)
			opt_nodebian=1
			;;
		-U|--upload)
			opt_upload=1
			;;
		-O|--upload-only)
			opt_notag=1
			opt_nobuild=1
			opt_nodebian=1
			opt_notests=1
			opt_upload=1
			;;
		-V|--extraversion)
			shift
			opt_extraversion="$1"
			[ -n "$opt_extraversion" ] || die "Invalid --extraversion"
			;;
		-K|--keep-tmp)
			opt_keeptmp=1
			;;
		*)
			die "Invalid option: $1"
			;;
		esac
		shift
	done

	opt_archives="$(echo "$opt_archives" | tr ',' ' ')"
	for artype in $opt_archives; do
		case "$artype" in
			tar|tar.bz2|tar.gz|tar.xz|tar.zst|zip|7z|py-sdist|py-sdist-gz|py-sdist-bz2|py-sdist-xz|py-sdist-zip|py-bdist|py-bdist-wininst|py-bdist-dump|py-bdist-rpm) ;; # ok
			*) die "Invalid archiving method: $artype" ;;
		esac
	done
	[ -n "$(echo "$opt_archives" | tr -d '[:blank:]')" ] ||\
		die "No archiving method selected"

	detect_repos_type
	make_checkout
	detect_versioning
	relocate_checkout
	make_documentation
	make_archives
	make_documentation_archives
	make_testbuild
	make_regression_tests
	make_debian_packages
	make_archive_signatures
	make_tag
	make_upload
	move_files
	cleanup
}

# vim: syntax=sh