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# SPDX-License-Identifier: CC0-1.0

# Copyright (C) 2022 Wojtek Kosior <koszko@koszko.org>
#
# Available under the terms of Creative Commons Zero v1.0 Universal.

GUIX ?= guix

# Almost all commands in this Makefilo are run through `guix time-machine` with
# Guix revision fixed to the one from the commit below. This ensures that the
# same working environment is always used.
GUIX_COMMIT ?= a86979b41a49a8fcdaa887970ba594dbba701226

GUIX_TM ?= $(GUIX) time-machine --commit=$(GUIX_COMMIT) --

GUIX_DEVSHELL = $(GUIX_TM) shell -Df guix.scm --

GET_VER = $$(grep '^Version:' src/hydrilla_website.egg-info/PKG-INFO | \
		cut -d' ' -f2)
RECORD_VER = VER="$(GET_VER)"

DETERMINISTIC_TAR = $(GUIX_TM) shell tar -- tar                             \
	--mtime='1970-01-01 00:00Z'                                         \
	--sort=name                                                         \
	--owner=0 --group=0 --numeric-owner                                 \
	--pax-option=exthdr.name=%d/PaxHeaders/%f,delete=atime,delete=ctime

DETERMINE_USER_SHELL_TO_USE =                    \
	case "$$SHELL" in                        \
		?*)                              \
			SHELL_TO_USE="$$SHELL";; \
		*)                               \
			SHELL_TO_USE="/bin/sh";; \
	esac

wheel:
	$(GUIX_DEVSHELL) python3 -m build

# Make a source tarball and repack in a deterministic way so that its
# reproducible.
dist src/hydrilla_website/_version.py:
	$(GUIX_DEVSHELL) python3 -m build -s
	$(RECORD_VER) &&                                           \
		RELNAME=hydrilla_website-"$$VER" &&                        \
		DISTFILE=dist/"$$RELNAME".tar.gz &&                \
		$(MAKE) clean-source-tarball-repack &&             \
		mkdir source-tarball-repack/ &&                    \
		tar -C source-tarball-repack/ -xf "$$DISTFILE" &&  \
		$(DETERMINISTIC_TAR) -C source-tarball-repack/     \
			-cf "$$DISTFILE" "$$RELNAME"
	@printf "Generated source tarball in:\n"
	@printf "./dist/hydrilla_website-$(GET_VER).tar.gz\n"

# If using bash, modify the prompt to indicate the environment is active.
shell:
	$(DETERMINE_USER_SHELL_TO_USE);	                            \
	case "$$SHELL_TO_USE" in                                    \
		*bash*)                                             \
			HYDRILLA_SHELL_NAME=hydrilla-website-dev    \
				$(GUIX_DEVSHELL) "$$SHELL_TO_USE"   \
				--rcfile ./bashrc || true;;         \
		*)                                                  \
			$(GUIX_DEVSHELL) "$$SHELL_TO_USE" || true;; \
	esac

catalogs:
	$(GUIX_DEVSHELL) python3 setup.py compile_catalog

refresh-catalogs:
	$(GUIX_DEVSHELL) sh -c \
		"python3 setup.py extract_messages && python3 setup.py update_catalog && python3 setup.py compile_catalog"

run-website: src/hydrilla_website/_version.py catalogs
	PYTHONPATH=./src $(GUIX_DEVSHELL) python3 -m hydrilla_website

reuse-lint:
	$(GUIX_DEVSHELL) reuse lint

mypy-lint: src/hydrilla_website/_version.py
	PYTHONPATH=./src/ $(GUIX_DEVSHELL) mypy -p hydrilla_website

clean-source-tarball-repack:
	rm -rf source-tarball-repack/

clean: clean-source-tarball-repack
	rm -rf build/ dist/ src/hydrilla_website.egg-info/ \
		src/hydrilla_website/_version.py           \
		src/hydrilla_website/locales/messages.pot  \
		.mypy_cache/
	find src/hydrilla_website/locales/ -name "messages.mo" -delete
	rm -rf $$(find -name "__pycache__")

.PHONY: shell                             \
	wheel dist catalogs               \
	run-website refresh-catalogs      \
	reuse-lint mypy-lint              \
	clean-source-tarball-repack clean