IKIWIKI_DEFAULTS ?= \
 --rcs git \
 --set cgi_wrappermode=00755 \
 --set git_wrappermode=06755 \
 --set srcdir='@CURDIR@/content' \
 --set destdir='@CURDIR@/build/html$(iki_flavor:%=-%)' \
 --set cgi_wrapper='@CURDIR@/build/cgi$(iki_flavor:%=-%)/ikiwiki.cgi' \
 --set git_wrapper='@CURDIR@/build/git/post-update-ikiwiki$(iki_flavor:%=-%)' \
 --set wikistatedir='@CURDIR@/.ikiwiki$(iki_flavor:%=-%)' \
 $(IKIWIKI_SHARED_DEFAULTS)

export CURDIR

cssprojects ?= $(wildcard shared/themes/goab styling)

all: build

-include shared/include.mk
-include config/include.mk
-include shared/themes/include.mk

always-make = $(findstring B,$(MAKEFLAGS))
avoid-broken-git = $(shell cd content && git symbolic-ref -q HEAD > /dev/null || echo " --no-rcs")

iki_configfiles := $(or $(patsubst %.in,%,$(wildcard config/ikiwiki*.setup.in)),config/ikiwiki.setup)

init: shared/.git content
	$(MAKE) $(iki_configfiles)

shared/.git:
	git submodule init
	git submodule update --init --recursive

config/ikiwiki.setup.in:
	$(if $(wildcard config),,mkdir config)
	$(if $(wildcard config/ikiwiki.setup.in),,touch config/ikiwiki.setup.in)

configfiles: $(iki_configfiles)
$(iki_configfiles): iki_flavor = $(if $(filter config/ikiwiki-%.setup,$@),$(@:config/ikiwiki-%.setup=%))
$(iki_configfiles): % : %.in
	ikiwiki $(IKIWIKI_DEFAULTS) \
		$(if $(IKIWIKI_UNDERLAYS)$(IKIWIKI_SHARED_UNDERLAYS),\
			--set-yaml add_underlays="$$(echo $(strip \
				$(IKIWIKI_UNDERLAYS) \
				$(IKIWIKI_SHARED_UNDERLAYS)) \
			| perl -pe 's/\s+/\n/g;s/^/- /gm')") \
		$(patsubst %,--setup %,$(wildcard $<)) --dumpsetup $@
	perl -i -pe '$$s=$$ENV{'CURDIR'}; s/\@CURDIR\@/$$s/g' $@

content: notempty = $(wildcard $@/*.mdwn)
content:
	$(if $(notempty),,mkdir -p '$@')
	$(if $(notempty),,printf '# Hello world!\n\nHello world!\n' > '$@/index.mdwn')

build:
	$(if $(cssprojects),$(MAKE) $(cssprojects))
	set -e;\
	$(foreach config,$(shell find config -name '*.setup'),ikiwiki --setup $(config)$(avoid-broken-git)$(if $(always-make), --rebuild, --refresh);)
	$(if $(wildcard forms),cd forms && find * -name '*.cgi' \
	-exec install -DT '{}' ../build/forms/'{}' ';' \
	-exec perl -i -pe "s:'../build':'$(CURDIR)/build':g" ../build/forms/'{}' ';')

.PHONY: all build configfiles