#!/usr/bin/make -f

# Usage: first run
#
#	umask 002 &&
#	./update-website.mk WWW_WC="<target_dir>" svn-checkout
#
# to create an initial repository on WWW_WC, if it does not exist yet. To
# update the website manually (usually this will be done by a post-commit hook
# script) run
#
#	cd "<target_dir>" &&
#	umask 002 &&
#	./scripts/update-website.mk svn-update update-website
#

SVN = svn://svn.linuxfromscratch.org
REV = HEAD

# Website working copy location
# Note: the working copy below should not be manipulated directly!
# Assuming we are already on WWW_WC
WWW_WC = $(PWD)

# Website location (defined on the Subversion hook script)
#TARGETDIR = /home/httpd/test.linuxfromscratch.org

SCRIPTS = $(WWW_WC)/scripts
# "LC_ALL=C" garantees a sane localization setting
MANAGE_NEWS = LC_ALL=C $(SCRIPTS)/manage_news.pl
SVN2HTML = $(SCRIPTS)/svn2html.pl
SVN2HTML2 = $(SCRIPTS)/svn2html2.pl
SVNLOG = svn log --verbose --xml
TEMPLATES = templates

# TODO This can be automated
# Projects which have news to be archived
PROJECTS = . lfs alfs blfs hints hlfs
# Years corresponding to the news-YYYY.txt files
YEARS = 2003 2004 2005
# Current year
YEAR = $(shell date +%Y)

update-website: update-alfs update-blfs update-hints update-hlfs \
	update-lfs update-patches update-www

news-archive: $(foreach y, $(YEARS), \
	$(foreach i, $(PROJECTS), $(if $(wildcard $(i)/news-$(y).txt), news/$(i)/$(y))))

news-html: alfs/news.html blfs/news.html hints/news.html hlfs/news.html \
	lfs/news.html patches/news.html

news-rss: alfs/feed.rss blfs/feed.rss hlfs/feed.rss lfs/feed.rss

backup:
	tar -cPf /var/tmp/website-backup.tar $(WWW_WC)

# Useful for the initial repository setup
svn-checkout:
# The setgid bit on dirs forces all files under it to have the same group of
# WWW_WC
	install -g lfswww -m 2775 -d $(WWW_WC)
	svn -q checkout $(SVN)/www/html/trunk $(WWW_WC)
	mkdir -p $(WWW_WC)/patches/downloads
	svn -q checkout $(SVN)/patches/trunk $(WWW_WC)/patches/downloads
	mkdir -p $(WWW_WC)/hints/downloads/files
	svn -q checkout $(SVN)/hints/trunk $(WWW_WC)/hints/downloads/files
	ln -s files/ATTACHMENTS $(WWW_WC)/hints/downloads/attachments
# Add some compatibility symlinks
	ln -s lfs/view $(WWW_WC)
	ln -s images/favicon.ico $(WWW_WC)
	ln -s 2columns.css $(WWW_WC)/style/screen.css

svn-update:
	svn -q update $(WWW_WC) -r $(REV)

# Generate news archives
define gen_news_targets
news/$(1)/$(2): $(1)/news-$(2).txt $(TEMPLATES)/$(1)/archive-*.html
	rm -rf $$@
	$(MANAGE_NEWS) -a news/ -i $(1)/news-$(2).txt \
	-t $(TEMPLATES)/$(1)/archive-top.html -b $(TEMPLATES)/$(1)/archive-bottom.html
endef
$(foreach y,$(YEARS),$(foreach i,$(PROJECTS),$(eval $(call gen_news_targets,$(i),$(y)))))

svnlog-%:
	mkdir -p logs
	$(SVNLOG) $(SVN)/$* 2>/dev/null | $(SVN2HTML) --with-branchname > logs/$*.html.tmp
	cmp -s logs/$*.html.tmp logs/$*.html || cp logs/$*.html.tmp logs/$*.html
	rm logs/$*.html.tmp

svnlog2-%:
	mkdir -p logs
	$(SVN2HTML2) --project $* --with-branchname > logs/$*.html.tmp
	cmp -s logs/$*.html.tmp logs/$*.html || cp logs/$*.html.tmp logs/$*.html
	rm logs/$*.html.tmp

logs/%.html:
	touch $@

alfs/news.html: $(TEMPLATES)/alfs/news-*.html news-$(YEAR).txt alfs/news-$(YEAR).txt logs/ALFS.html
	cat $(TEMPLATES)/alfs/news-top.html > alfs/news.html
	$(MANAGE_NEWS) -i alfs/news-$(YEAR).txt >> alfs/news.html
	$(MANAGE_NEWS) -i news-$(YEAR).txt >> alfs/news.html
	cat logs/ALFS.html \
	$(TEMPLATES)/alfs/news-bottom.html >> alfs/news.html

blfs/news.html: $(TEMPLATES)/blfs/news-*.html news-$(YEAR).txt blfs/news-$(YEAR).txt logs/BLFS.html
	cat $(TEMPLATES)/blfs/news-top.html > blfs/news.html
	$(MANAGE_NEWS) -i blfs/news-$(YEAR).txt >> blfs/news.html
	$(MANAGE_NEWS) -i news-$(YEAR).txt >> blfs/news.html
	cat logs/BLFS.html \
	$(TEMPLATES)/blfs/news-bottom.html >> blfs/news.html

hints/news.html: $(TEMPLATES)/hints/news-*.html logs/hints.html
	cat $(TEMPLATES)/hints/news-top.html \
	logs/hints.html \
	$(TEMPLATES)/hints/news-bottom.html > hints/news.html

hlfs/news.html: $(TEMPLATES)/hlfs/news-*.html news-$(YEAR).txt hlfs/news-$(YEAR).txt logs/HLFS.html
	cat $(TEMPLATES)/hlfs/news-top.html > hlfs/news.html
	$(MANAGE_NEWS) -i hlfs/news-$(YEAR).txt >> hlfs/news.html
	$(MANAGE_NEWS) -i news-$(YEAR).txt >> hlfs/news.html
	cat logs/HLFS.html \
	$(TEMPLATES)/hlfs/news-bottom.html >> hlfs/news.html

lfs/news.html: $(TEMPLATES)/lfs/news-*.html news-$(YEAR).txt lfs/news-$(YEAR).txt logs/LFS.html
	cat $(TEMPLATES)/lfs/news-top.html > lfs/news.html
	$(MANAGE_NEWS) -i lfs/news-$(YEAR).txt >> lfs/news.html
	$(MANAGE_NEWS) -i news-$(YEAR).txt >> lfs/news.html
	cat logs/LFS.html \
	$(TEMPLATES)/lfs/news-bottom.html >> lfs/news.html

patches/news.html: $(TEMPLATES)/patches/news-*.html logs/patches.html
	cat $(TEMPLATES)/patches/news-top.html \
	logs/patches.html \
	$(TEMPLATES)/patches/news-bottom.html > patches/news.html

website.html: $(TEMPLATES)/website-*.html logs/www.html
	cat $(TEMPLATES)/website-top.html \
	logs/www.html \
	$(TEMPLATES)/website-bottom.html > website.html

# Generate RSS feeds
%/feed.rss: %/news.html
	$(SCRIPTS)/lfs2rss.pl -n $< -r $@

# Create mirrors list for each section
PROJS = alfs hlfs blfs hints lfs patches
INDEXES = $(foreach i,$(PROJS),$(i)/index.html)

mirrors-list: index.html $(INDEXES)

index.html: mirrorlist.html $(TEMPLATES)/index-*.html
	cat $(TEMPLATES)/index-top.html \
	mirrorlist.html \
	$(TEMPLATES)/index-bottom.html > index.html

$(INDEXES): mirrorlist.html $(foreach i,$(PROJS),$(TEMPLATES)/$(i)/index-*.html)
	for i in $(PROJS); do \
	cat $(TEMPLATES)/$$i/index-top.html > $$i/index.html; \
	sed "s@/lfs/news.html@/$$i/news.html@g" mirrorlist.html >> $$i/index.html; \
	cat $(TEMPLATES)/$$i/index-bottom.html >> $$i/index.html; done

###########################################
# Update project-specific website sections
#
# TODO: These rules should be run by each project's post-commit script or by
# cron jobs

update-alfs: svnlog2-ALFS alfs/news.html

update-blfs: svnlog-BLFS blfs/news.html

update-hints: svnlog-hints hints/news.html fetch-hints hints-tarball \
	hints-symlinks hints-list

update-hlfs: svnlog-HLFS hlfs/news.html

update-lfs: svnlog-LFS lfs/news.html

update-patches: svnlog-patches patches/news.html
	svn -q update patches/downloads

update-www: svnlog-www website.html news-archive news-html news-rss \
	mirrors-list error-pages

# Add the timestamp for mirrors
update-timestamp:
	mkdir -p timestamp
	date +%s > timestamp/timestamp

fetch-hints:
	find hints/downloads -type l -exec rm '{}' \;
	svn -q update hints/downloads/files

hints-tarball:
	ln -s files hints/downloads/hints
	cd hints/downloads && tar --exclude=.svn -chjf hints.tar.bz2 hints/
	rm hints/downloads/hints

hints-symlinks:
	cd hints/downloads/files && \
	if [ -d HOLD ]; then for i in $$(ls HOLD/*.txt); do ln -s $$i; done; fi
	cd hints/downloads/files && \
	for i in $$(ls PREVIOUS_FORMAT/*.txt); do ln -s $$i; done

hints-list:
	cd hints && $(SCRIPTS)/genlist.sh

# Validate XHTML files
# FIXME: better on a pre-commit script?
validate:
	test -n "$(TARGETDIR)"
	cd $(TARGETDIR) && \
	find -name \*.html -maxdepth 3 | while read file; do \
	xmllint --valid --noout $$file || exit 1; done

# Copy these to the httpd error dirs
error-pages: 403.html 404.html
	cp 40{3,4}.html /home/httpd/error

# Copy website content to its final location
run-rsync:
	test -n "$(TARGETDIR)"
	@echo
	@echo "*** The following rsync command may fail to setup permissions if the"
	@echo "*** caller is not owner of the file(s). This error can be ignored."
	@echo
	rsync -av --delete --exclude-from=scripts/rsync-ignore . $(TARGETDIR)/ || true