rwildcard=$(foreach d,$(wildcard $(1:=/*)),$(call rwildcard,$d,$2) $(filter $(subst *,%,$2),$d))

VENV := .env
BIN := $(VENV)/bin
PYTHON := $(BIN)/python
SHELL := /bin/bash

IGNORE = .git .env
PYFILES := $(filter-out $(IGNORE),$(call rwildcard,.,*.py))
HTMLFILES := $(filter-out $(IGNORE),$(call rwildcard,.,*.html))
MODELS := $(filter-out .git,$(call rwildcard,.,*/models.py))

$(VENV)/.install: requirements.txt
	test -d $(VENV) || python3 -m venv $(VENV)
	$(BIN)/pip install --upgrade -r requirements.txt
	touch $(VENV)/.install

$(VENV)/.migrate: $(MODELS)
	$(PYTHON) manage.py makemigrations
	$(PYTHON) manage.py migrate
	touch $(VENV)/.migrate

$(VENV)/.start: $(HTMLFILES) $(PYFILES)
	$(PYTHON) manage.py collectstatic --noinput
	sudo systemctl restart gunicorn.service gunicorn.socket
	touch $(VENV)/.start

.PHONY: migrate
migrate: $(VENV)/.migrate ## Make and run migrations

.PHONY: test
test: ## Run tests
	$(PYTHON) manage.py test application --verbosity=0 --parallel --failfast

.PHONY: pull
pull:
	git pull

.PHONY: start
start: ## Restart gunicorn
	sudo systemctl restart gunicorn.service gunicorn.socket

.PHONY: update
update: pull $(VENV)/.install $(VENV)/.migrate $(VENV)/.start  ## Pull latest from remote and restart

.PHONY: backup
backup: ## Backup database to json file.
	$(PYTHON) manage.py dumpdata --exclude auth.permission --exclude contenttypes --indent=2 > db.json

.PHONY: restore
restore: ## Restore previous backup file.
	$(PYTHON) manage.py loaddata db.json

.PHONY: clean
clean:
	find -iname "*.pyc" -delete

help: ## Self-documented Makefile
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'