#
# This is the top-level Makefile for a janware software build tree. It is
# provided under the terms of the GNU Lesser Public License, Version 2.
#
# Some of its targets download software from janware GmbH servers. For those,
# you will need a janware.com user account. Ask admin@janware.com if you want
# one.
#
# Current documentation on how this Makefile is meant to be used can be found
# under https://janware.com/wiki/pub/en/sw/build/. Running "make doc-module"
# might take you there semi-automatically.
#

# ------------ Makefile and environment variables

-include local.mk

SHELL = /bin/bash -o pipefail

ifneq ($(PROJECTS),)
  export PGIT_CLONE_PROJECTS = $(PROJECTS)
endif

ifneq ($(wildcard projects.txt),)
  PROJECTS ?= $(shell cat projects.txt | sed '/^ *\#/ d')
  # TODO: this could be nicer
  CVS_PROJECTS = $(PROJECTS)
else
  PROJECTS ?= $(shell ls -d */CVS */.git 2>/dev/null | sed 's%/[^/]*%%')
  CVS_PROJECTS = $(filter $(dir $(wildcard */CVS)),$(PROJECTS))
endif

EXCLUDE_FROM_BUILD += \
	dspider-btools \
	dspider-shared \
	feedfs-dspcd \
	casview \
	dspfs \
	jux3

EXCLUDES_FILE ?= exclude.txt

ifneq ($(wildcard $(EXCLUDES_FILE)),)
	EXCLUDE_FROM_BUILD += $(shell cat $(EXCLUDES_FILE))
endif

BUILD_PROJECTS = $(filter-out $(EXCLUDE_FROM_BUILD),$(PROJECTS))

ifeq ($(JANWARE_USER),)
  export JANWARE_USER = $(shell id -un)
endif

CWD := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))

export CVSROOT = :ext:$(JANWARE_USER)@cvs.jannet.de:/home/jannet/arc/cvs

ifneq ($(JW_BUILD_SSH),)
  export CVS_RSH := $(JW_BUILD_SSH)
else
  export CVS_RSH := $(CWD)/ssh-wrapper.sh
endif

export GIT_SSH := $(CVS_RSH)
ifeq ($(filter pkg-%,$(MAKECMDGOALS)),)
  export JW_BUILD_SSH_EXTRA_OPTS += -o ControlMaster=auto -o ControlPath=/tmp/%r@jw-build:%p -o ControlPersist=3m
endif

ifneq ($(CLONE_FROM_USER),)
  export PGIT_CLONE_FROM_USER = $(CLONE_FROM_USER)
else
  export PGIT_CLONE_FROM_USER = $(JANWARE_USER)
endif

ifneq ($(EXCLUDE_FROM_BUILD),)
  BUILD_PY_EXTRA_ARGS += --exclude "$(EXCLUDE_FROM_BUILD)"
endif

# ------------ external programs

MOD_SCRIPT_DIR        = ./jw-build/scripts
PGIT                  = CLONE_PROJECTS="$(PROJECTS)" /bin/bash $(firstword $(wildcard $(MOD_SCRIPT_DIR)/pgit.sh /opt/jw-build/bin/pgit.sh) pgit.sh-not-found)
BUILD_PY              = python $(MOD_SCRIPT_DIR)/build.py -b $(shell pwd) $(BUILD_PY_EXTRA_ARGS)
PROJECTS_PY           = python $(MOD_SCRIPT_DIR)/projects.py --prefix $(shell pwd) $(PROJECTS_PY_EXTRA_ARGS)
PURGE_SH              = /bin/bash $(firstword $(wildcard $(MOD_SCRIPT_DIR)/purge-stale-projects.sh /opt/jw-build/bin/purge-stale-projects.sh) purge-not-found)
RELEASE_SH            = /bin/bash $(firstword $(wildcard $(MOD_SCRIPT_DIR)/build-release.sh /opt/jw-build/bin/build-release.sh) release-not-found)
PKG_MANAGER_SH       ?= /bin/bash $(firstword $(wildcard $(MOD_SCRIPT_DIR)/pkg-manager.sh /opt/jw-build/bin/pkg-manager.sh) pkg-manager-not-found)
CREATE_PROJECT_SH    ?= /bin/bash $(firstword $(wildcard $(MOD_SCRIPT_DIR)/jw-build-create-project.sh /opt/jw-build/bin/jw-build-create-project.sh) jw-build-create-project-not-found)
LIST_VCS_FILES        = /bin/bash $(firstword $(wildcard $(MOD_SCRIPT_DIR)/list-cvs-files.sh /opt/jw-build/bin/list-cvs-files.sh) list-cvs-files-not-found)
JANWARE_PKG           = /bin/bash $(firstword $(wildcard $(MOD_SCRIPT_DIR)/jannet /opt/jw-build/bin/jannet) jannet-not-found)
BROWSER              ?= firefox
GIT_SRV_ADMIN_SH      = JW_BUILD_SSH_EXTRA_OPTS="$(JW_BUILD_SSH_EXTRA_OPTS)" $(GIT_SSH) $(JANWARE_USER)@git.jannet.de /opt/jw-build/bin/git-srv-admin.sh 
CVS_ADMIN_SH          = JW_BUILD_SSH_EXTRA_OPTS="$(JW_BUILD_SSH_EXTRA_OPTS)" $(GIT_SSH) $(JANWARE_USER)@git.jannet.de /opt/jw-build/bin/cvs-admin.sh 

# ------------ targets
  
all: pull.done
	$(BUILD_PY) $@ $(BUILD_PROJECTS)
clean: clean-dirs done.clean
distclean: clean-all-dirs done.clean
install:
	@echo
	@echo "  Target install is not supported by this Makefile."
	@echo "  Target pkg-rebuild-reinstall might be what you are looking for."
	@echo
	@exit 1

build-order: pull.done
	$(BUILD_PY) order $(BUILD_PROJECTS) | sed 's/  */\n/g'

clean-dirs:
	ls */dirs-started-all.done 2>/dev/null | sed 's%/.*%%' | xargs -r $(BUILD_PY) clean

clean-all-dirs:
	$(BUILD_PY) clean $(PROJECTS)

echo-prereq-build:
	@$(PROJECTS_PY) requires-pkg --flavours "build" $(BUILD_PROJECTS)

echo-prereq-release:
	@$(PROJECTS_PY) requires-pkg --flavours "build run release" $(BUILD_PROJECTS)

pkg-manager-refresh:
	$(PKG_MANAGER_SH) refresh -y

pkg-install-prereq-build:
	@$(PROJECTS_PY) requires-pkg --flavours "build" $(BUILD_PROJECTS) | xargs -r $(PKG_MANAGER_SH) install -y

pkg-install-prereq-release:
	@$(PROJECTS_PY) requires-pkg --flavours "build run release" $(BUILD_PROJECTS) | xargs -r $(PKG_MANAGER_SH) install -y

pkg-exclude-built-today:
	touch $(EXCLUDES_FILE)
	$(JANWARE_PKG) built-today > built-today.tmp
	cat $(EXCLUDES_FILE) built-today.tmp | sed 's/  */\n/g' | sort -u > $(EXCLUDES_FILE).tmp
	mv $(EXCLUDES_FILE).tmp $(EXCLUDES_FILE)
clean: clean.pkg-exclude-built-today
clean.pkg-exclude-built-today:
	rm -f $(EXCLUDES_FILE).tmp built-today.tmp

pkg-list-groups:
	@find . -name project.conf | xargs sed '/^ *group *=/!d; s/group *= *//; s/"//g' | sort -u

pkg-fetch-from-%:
	ssh $* /opt/jw-base/bin/jw-pkg info -s > projects.txt.tmp
	mv projects.txt.tmp projects.txt

pkg-release-all:
	/bin/bash ./packager-client/scripts/packager-client-2.sh

pkg-%: pull.done
	$(BUILD_PY) $@ $(BUILD_PROJECTS)

init-project-%:
	$(CREATE_PROJECT_SH) $*

doc-project doc-module:
	$(BROWSER) $(firstword $(shell sed '/https:/ !d; s%.*https%https%; s/ .*//' $(firstword $(MAKEFILE_LIST))))

status: ssh-wrapper.sh
	for p in $(CVS_PROJECTS); do test -f $$d/CVS || echo $$p; done 
	cvs status $(addsuffix VERSION,$(CVS_PROJECTS))
	$(PGIT) status

purge: ssh-wrapper.sh
ifneq ($(wildcard CVS),)
	$(PURGE_SH)
endif

update pull: purge cvs-update git-clone
	touch pull.done

sync: pull push

sync-%:
	ssh $* make -C $(shell pwd) sync

pull-all: purge cvs-update git-clone git-pull-all
	touch clone.done
	touch pull.done

diff-all diff: ssh-wrapper.sh
	cvs diff -u; $(PGIT) diff

rebuild: clean purge pull subdirs-all

release: ssh-wrapper.sh
	$(RELEASE_SH)

subdirs-%:
	FORCE_REBUILD_SUBDIRS=true make $*

cvs-update: ssh-wrapper.sh
	rm -f $@.done
	make $@.done

cvs-diff: ssh-wrapper.sh
	cvs diff -u

git-push push: ssh-wrapper.sh
	$(PGIT) push

git-push-all: ssh-wrapper.sh
	$(PGIT) push --all

git-diff: ssh-wrapper.sh
	$(PGIT) diff

git-short-diff: ssh-wrapper.sh
	$(PGIT) diff --shortstat

git-pull: ssh-wrapper.sh
	$(PGIT) clone

git-pull-all: ssh-wrapper.sh
	$(PGIT) pull --all

git-clone: ssh-wrapper.sh
	$(PGIT) clone
	touch clone.done

git-clone-%: ssh-wrapper.sh
	PGIT_CLONE_FROM_USER=$* $(PGIT) clone

git-show-non-master-branches:
	@$(PGIT) branch 2>&1 | \
		sed '/^#\|^*/!d; s/.*git -C //; s/ *branch *//; s/ *\* *//' | \
		while read p; do \
			read b ;\
			if [ "$$b" != "master" ]; then \
				echo " * $$p:	$$b" ;\
			fi ;\
		done

pull-%: ssh-wrapper.sh
	PGIT_CLONE_FROM_USER=$* $(PGIT) clone

git-commit:
	$(PGIT) commit

git-conv-%: ssh-wrapper.sh
	[ -e $*/.git ] || { \
		mv $* old/ ;\
		if PROJECTS="$*" make clone; then \
			sed -i "/^D\/$*\// d" CVS/Entries ;\
		else \
			mv old/$* . ;\
		fi \
	}

check-conv: ssh-wrapper.sh
	for p in `$(GIT_SRV_ADMIN_SH) -u jan -j list-personal-projects`; do \
		make git-conv-$$p ;\
	done

list-maintainers: ssh-wrapper.sh
	$(GIT_SRV_ADMIN_SH) $@

git-update-project-descriptions: ssh-wrapper.sh
	$(GIT_SRV_ADMIN_SH) -j update-descriptions all

projects.txt:
	echo $(PROJECTS) | sed 's/ /\n/g; s%/%%g' > $@

done.clean:
	rm -f *.done

links.done:
	if [ -d btools ]; then ln -sf btools dspider-btools; fi
	if [ -d dspc/src/shared ]; then ln -sf dspc/src/shared dspider-shared; fi
	touch $@

ssh-wrapper.sh: Makefile
	/bin/echo -e '#!/bin/bash -x\n\nexec /usr/bin/ssh $$JW_BUILD_SSH_EXTRA_OPTS "$$@"' > $@.tmp
	chmod 700 $@.tmp
	mv $@.tmp $@
ssh-wrapper: ssh-wrapper.sh
clean.ssh-wrapper:
	rm -f ssh-wrapper.sh
clean: clean.ssh-wrapper

cvsdir.done: ssh-wrapper.sh
	if [ ! -d CVS ]; then \
		mkdir CVS && \
		echo :ext:$(JANWARE_USER)@cvs.jannet.de:/home/jannet/arc/cvs > CVS/Root && \
		echo proj > CVS/Repository && \
		echo "/Makefile/$Revision$ ///" | sed 's/ *evision: *\([0-9.]*\) */\1/; s/ *$$ *//' > CVS/Entries ;\
	fi
	touch $@

cvs-update.done: cvsdir.done ssh-wrapper.sh
	cvs update -dP Makefile $(shell $(CVS_ADMIN_SH) list-projects)
	touch $@

update.done: purge

pull.done: cvs-update.done clone.done links.done
	touch $@

clone.done: ssh-wrapper.sh
	$(PGIT) clone
	touch $@

list-files:
	@for p in $(PROJECTS); do \
		$(LIST_VCS_FILES) -znf $$p | sed -z "s/^/$$p\//" | \
			xargs -0 realpath --relative-to=. ;\
	done

list-text-files:
	@make --no-print-directory list-files | xargs file -N | grep ":.*text" | cut -d: -f1

loc-all:
	@make --no-print-directory list-text-files | \
		grep -v "iow-standalone\|jux3\|ntv2/contrib\|\.dia$$\|\.dat\$$\|bootsrap\.css\|mpegplayer/contrib\|gitweb.cgi" | \
		xargs wc -l

find-code-files:
	find . -name '*.c' -o -name '*.cpp' -o -name '*.h' \
		-o -name Makefile -o -name '*.mk' \
		-o -name '*.sh' -o -name '*.pl' -o -name '*.py' \
		| grep -v "/dist/\|\.dep\.mk\|local.mk\|coordgen\|^\./[^/]\+/include/" \
		| grep -v "contrib/wt\|/bin/\|contrib/bootstrap\|contrib/chntpw/src\|contrib/jquery/src\|contrib/ntv2linux" \
		| grep -v "copilot-suse-tw-cf/initrd-tree" \
		| grep -v "iow-standalone\|jux3" \
		| grep -v "generated\|tmp\|old\|orig\|purged"