SHELL = /bin/bash

REPOSITORY = https://github.com/sqlalchemy/alembic.git

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

venv:
	python3 -m venv venv

repository:
	git clone ${REPOSITORY} repository

rel_1_5_0 rel_1_6_0 rel_1_7_0 rel_1_8_0 rel_1_9_0 rel_1_10_0 rel_1_11_0 rel_1_12_0 rel_1_13_0: check_env_vars venv repository
	mkdir --parents "${OUTPUT_PATH}"
	source venv/bin/activate
	cd repository
	git checkout tags/$@
	pip install .
	pip install -r docs/build/requirements.txt
	cd docs/build/
	make dirhtml
	cp --recursive output/dirhtml "${OUTPUT_PATH}/$@"

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