SHELL = /bin/bash

REPOSITORY = https://github.com/django/django.git

check_env_vars:
ifdef OUTPUT_PATH
OUTPUT_PATH := ${OUTPUT_PATH}/django
else
	$(error OUTPUT_PATH is undefined)
endif

venv-3.8:
	export PYENV_VERSION=3.8
	python3 -m venv venv

repository:
	git clone ${REPOSITORY} repository

3.2.23 4.2.8 5.0: check_env_vars venv-3.8 repository
	source venv/bin/activate
	cd repository
	git checkout tags/$@
	pip install -r docs/requirements.txt
	cd docs
	make clean dirhtml
	mkdir --parents "${OUTPUT_PATH}/en"
	cp --recursive _build/dirhtml "${OUTPUT_PATH}/en/$@"

2.2.28: check_env_vars venv-3.8 repository
	source venv/bin/activate
	cd repository
	git checkout tags/$@
	pip install -r docs/requirements.txt "sphinx < 6"
	cd docs
	make clean dirhtml
	mkdir --parents "${OUTPUT_PATH}/en"
	cp --recursive _build/dirhtml "${OUTPUT_PATH}/en/$@"

.ONESHELL:
.SUFFIXES:
.PHONY:
.DELETE_ON_ERROR: