# Development tasks. Everything runs through `R`, so there is nothing to
# install first beyond the two runtime dependencies (curl, jsonlite) and
# roxygen2 for `make document`.
#
#   make            list the targets
#   make test       install into check/lib and run tests/
#   make lint       parse every file + codetools, no files touched
#   make build      build the source tarball
R ?= R
RSCRIPT ?= Rscript

PKG := cepis
VERSION := $(shell awk '/^Version:/ { print $$2 }' DESCRIPTION)
TARBALL := $(PKG)_$(VERSION).tar.gz
LIB := $(CURDIR)/check/lib

.DEFAULT_GOAL := help
.PHONY: help install test lint document build check check-cran clean

help:
	@echo 'Targets:'
	@echo '  test       install into check/lib and run every tests/test-*.R'
	@echo '  lint       parse the sources + codetools::checkUsagePackage (read-only)'
	@echo '  document   regenerate man/ and NAMESPACE with roxygen2 (writes)'
	@echo '  build      build $(TARBALL)'
	@echo '  check      lint + test + build, in that order'
	@echo '  check-cran build, then R CMD check the tarball'
	@echo '  clean      remove build and check artefacts'

install:
	@mkdir -p $(LIB)
	$(R) CMD INSTALL --library=$(LIB) .

test: install
	@cd tests && for file in test-*.R; do \
		echo "==> $$file"; \
		R_LIBS=$(LIB) $(RSCRIPT) "$$file" || exit 1; \
	done

# Read-only by design, so it is safe in CI and in a pre-commit hook.
lint: install
	@R_LIBS=$(LIB) $(RSCRIPT) -e 'for (f in list.files(c("R", "tests"), pattern = "[.]R$$", recursive = TRUE, full.names = TRUE)) invisible(parse(f)); cat("parsed\n")'
	@R_LIBS=$(LIB) $(RSCRIPT) -e 'suppressMessages(library($(PKG))); codetools::checkUsagePackage("$(PKG)", suppressLocalUnused = TRUE); cat("checked\n")'

document:
	$(RSCRIPT) -e 'roxygen2::roxygenise(load_code = "source")'

build:
	$(R) CMD build .

# The order matters: lint is the fastest to fail, build the slowest, so a
# broken run reports the cheapest problem first.
check: lint test build

check-cran: build
	$(R) CMD check --no-manual $(TARBALL)

clean:
	rm -rf check $(PKG).Rcheck *.tar.gz