make-pandoc/Makefile

# Sources of inspiration:
# https://makefiletutorial.com/
# https://code.larlet.fr/makefile/
# https://www.thapaliya.com/en/writings/well-documented-makefiles/

.DEFAULT_GOAL:=help
SHELL:=/bin/bash

# Get the output of the pandoc command
pandoc=$(shell command -v pandoc)
# Get the version of pandoc
pandoc_version=$(shell pandoc --version | sed -e 's/.* // ; 1q')
# Get the output of the awk command
awk=$(shell command -v awk)

# Get the datetime
now=$(shell date +%Y%m%d%H%M%S)
# Build the filename
filename=$(now).md

# Export date and id as environment variable to replace the variables in the
# template file
export date:=$(shell date +%Y-%m-%dT%H:%M:%S%:z)
export id:=$(now)

# Set the templates and notes directories
templates_directory=templates
notes_directory=notes

.PHONY: help deps

help:  ## Display this help
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n\nTargets:\n"} /^[a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-10s\033[0m %s\n", $$1, $$2 }' $(MAKEFILE_LIST)

deps:  ## Check dependencies
	$(info Checking and getting dependencies)
ifeq ($(strip ($pandoc)),)
	@echo "pandoc is required and not installed"
else
	@echo "pandoc" $(pandoc_version) "is installed"
endif
ifeq ($(strip ($awk)),)
	@echo "awk is required and not installed"
else
	@echo "awk is installed"
endif

new: ## Create a new file
	$(info Creating a new file)
	@ envsubst <$(templates_directory)/default.md >$(notes_directory)/$(filename)
	$(info Your new file is $(notes_directory)/$(filename))