# Copyright 2019 Joel Dueck
# This file is part of The Local Yarn
# 
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.  This file is offered as-is,
# without any warranty.
#
SHELL = /bin/bash

# ~~~ Variables used by rules ~~~
#

core-files := pollen.rkt dust.rkt
html-deps  := snippets-html.rkt tags-html.rkt

article-sources := $(wildcard articles/*.poly.pm)
articles-html   := $(patsubst %.poly.pm, %.html, $(article-sources))
articles-pdf    := $(patsubst %.poly.pm, %.pdf,  $(article-sources))

series-sources  := $(wildcard series/*.poly.pm)
series-html     := $(patsubst %.poly.pm, %.html, $(series-sources))

# ~~~ Rules ~~
#

# The order of these dependencies is important. They will be processed left to right.
web: _article_htmls.mark $(articles-html) $(series-html) blog-pg1.html keyword-index.html
web: ## Rebuild all web content (not PDFs)

# The file article_htmls.mark is a zero-byte file that serves only as a marker. If it is older than
# any of its dependencies (or missing) all of the articles will be rebuilt. Its dependencies are
# also on the Pollen cache watchlist (see pollen.rkt)
_article_htmls.mark: $(core-files) $(html-deps) template.html.p
	raco pollen setup articles/
	raco pollen render -p -t html articles/*.poly.pm
	raco pollen setup series/
	raco pollen render -p -t html series/*.poly.pm
	touch _article_htmls.mark

# If the rule for article_htmls.mark was triggered, all the article HTML files will already have
# been re-rendered.  (That rule comes before this one in the list of dependencies for "all") But if
# not, any individual files that have been edited will get re-rendered.
$(articles-html): %.html: %.poly.pm 
	raco pollen render $@

# Note that if any article is part of a series, it will touch its series .poly.pm file during its
# render, triggering this rule for that series.
$(series-html): %.html: %.poly.pm
	raco pollen render $@

# This target will also rebuild pg2, pg3, etc. as needed
blog-pg1.html: $(core-files) $(html-deps) $(articles-html) blog.rkt
	rm -f blog*.html
	racket -tm blog.rkt

keyword-index.html: $(core-files) $(html-deps) $(articles-html) keyword-index.rkt
	racket -tm keyword-index.rkt

spritz: ## Clear Pollen and Scribble cache
	rm -rf compiled code-docs/compiled articles/compiled series/compiled
	fossil clean code-docs/

publish: check-env
publish: ## Sync all HTML and PDF stuff to the public web server (does not rebuild any files)
	raco pollen publish
	./util/relativize ~/Desktop/publish/
	rsync -av ~/Desktop/publish/ -e 'ssh -p $(WEB_SRV_PORT)' $(LOCALYARN_SRV) \
		--delete \
		--exclude=drafts \
		--exclude=code-docs \
		--exclude=util \
		--exclude=x-mockup \
		--exclude=repo-www \
		--exclude=scribbled \
		--exclude='*.sqlite' \
		--exclude='*.fossil' \
		--exclude=.fossil-settings \
		--exclude=.fslckout \
		--exclude='*.ltx' \
		--exclude='*.swp' \
		--exclude='*.mark' \
		--exclude=.DS_Store \
	    --exclude='template*.*' \
		--exclude=makefile 
	rm -rf ~/Desktop/publish

scribble: ## Rebuild code documentation and update Fossil repo
	scribble --htmls +m --redirect https://docs.racket-lang.org/local-redirect/ code-docs/main.scrbl
	fossil uv rm scribbled/*
	rm -rf scribbled/*
	mv main/* scribbled/
	cp code-docs/scribble-iframe.html scribbled/scribble.html
	rm -rf main
	fossil uv add scribbled/*
	fossil uv sync

# Self-documenting makefile (http://marmelab.com/blog/2016/02/29/auto-documented-makefile.html)
help: ## Displays this help screen
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-15s\033[0m %s\n", $$1, $$2}'

article: ## Start a new article from a template
	racket -tm util/newpost.rkt

.PHONY: all scribble help spritz article publish check-env

.DEFAULT_GOAL := help

check-env:
ifndef LOCALYARN_SRV
	$(error LOCALYARN_SRV env variable not set, should be a destination valid for rsync)
endif
ifndef WEB_SRV_PORT
	$(error WEB_SRV_PORT env variable not set, should be SSH port number for web server)
endif
