#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-#
#
#> Manage building Hugo website
#>
#> Andrew Stryker <axs@sdf.org>
#>
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-#

#-----------------------------------------------------------------------------#
#
# Configuration
#
#-----------------------------------------------------------------------------#

SHELL = /usr/bin/bash

DEST ?= axs@sdf.org:html
SITE_URL ?= https://axs.sdf.org

HUGO_SERVE_FLAGS ?= --buildDrafts
hugo_serve_cmd = hugo server ${HUGO_SERVE_FLAGS}

help_generator = generate-help.awk

#-----------------------------------------------------------------------------#
#
# Define user interface
#
#-----------------------------------------------------------------------------#

.PHONY: default help publish build

default: build

build: .build_sentinel #> Build site with Hugo (default)

publish: #> Publish site
	@echo "🏗️ Forcing clean build for publish"
	@rm -f .build_sentinel
	@$(MAKE) build
	@echo "📰Publishing..."
	@# rsync options:
	@#   verbose:    show each operation
	@#   links:      preserve symlinks
	@#   safe-links: ignore symlinks that point outside of tree
	@#   times:      preserve modification times
	@#   delete:     delete extraneous files, i.e., files on destination
	@#   chmod:      set permissions
	@echo "\t 📡 Copying from public to ${DEST}"
	@rsync \
	  --verbose \
	  --recursive \
	  --links \
	  --safe-links \
	  --times \
	  --delete \
	  --chmod=D755,F644 \
	  public/ \
	  ${DEST}
	@echo "\t 🛡️ Setting permissions"
	@ssh axs@sdf.org 'mkhomepg -p'
	@echo "✓ Publishing complete"
	@echo "\nThe site should be available on ${SITE_URL}"

serve: #> Start a Hugo server
	@if [[ -z $${TMUX} ]]; \
	then \
	  echo not tmux; \
	else \
	  echo Starting a Hugo server in a new Tmux window; \
	  tmux neww ${hugo_serve_cmd}; \
	fi



help: #> Generate this help message
	@gawk -f ${help_generator} $(MAKEFILE_LIST)

#-----------------------------------------------------------------------------#
#
# Rmd rendering via statdown
#
#-----------------------------------------------------------------------------#

# Discover all Rmd source files and derive their .md targets
RMD_SOURCES := $(wildcard content/posts/*.Rmd content/posts/*/*.Rmd content/demos/*/*.Rmd)
MD_TARGETS  := $(RMD_SOURCES:.Rmd=.md)

# Shared asset location for CSS/JS dependencies (via depkit)
LIBS_DIR := static/libs
LIBS_URL := /libs

# Pattern rule: render .md from .Rmd using statdown
# Re-render when renv.lock changes (package version update)
# Assets are written to static/libs/ so they are shared across posts
%.md: %.Rmd renv.lock
	@echo "🔄 Rendering $<"
	cd $(dir $<) && Rscript -e 'renv::load("$(CURDIR)"); statdown::statdown_render("$(notdir $<)", output_root = "$(CURDIR)/$(LIBS_DIR)", url_root = "$(LIBS_URL)")'

#-----------------------------------------------------------------------------#
#
# Define file interface
#
#-----------------------------------------------------------------------------#

# Rebuild when rendered Rmd targets, markdown, or page bundle assets change
CONTENT_FILES := $(shell find content -name '*.md' -o -name '*.html' -o -name '*.svg' -o -name '*.png' -o -name '*.jpg' | grep -v '*~')
LAYOUT_FILES  := $(shell find layouts -name '*.html' | grep -v '*~')

.build_sentinel: $(MD_TARGETS) $(CONTENT_FILES) $(LAYOUT_FILES) hugo.yaml
	@echo "\t 🏗️ Building site"
	@# We call hugo with two options:
	@#  --cleanDestinationDir, to remove deleted files
	@#  --minify, to compress files by removing extra whitespace
	hugo --cleanDestinationDir --minify
	@touch $@
	@echo "✓ Building complete"

#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-#