# SPDX-License-Identifier: LGPL-2.0-only
#
# Makefile for managing multiple software repositories in one tree
#
# (C) Copyright 2001-2025, Jan Lindemann <jan@janware.com>
#
# This is the top-level Makefile for a software build tree organized by
# jw-pkg. It is provided under the terms of the GNU Lesser Public License,
# Version 2.
#
# 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 help" might
# take you there semi-automatically.
#

# ------------ Makefile and environment variable definitions

.NOTPARALLEL:

PROJECTS_MAKEFILE_NAME      ?= $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))

# -- Find JWBDIR
DEV_PROJECTS_DIR            ?= .
JWBDIR_NAME                 ?= jw-pkg
JWBDIR_SEARCH_PATH          ?= $(DEV_PROJECTS_DIR) $(BUILD_TOOLS_PREFIX)/opt/$(FLAVOUR_PATH_PREFIX)
JWBDIR                      ?= $(firstword $(wildcard $(addsuffix /$(JWBDIR_NAME),$(JWBDIR_SEARCH_PATH))))

JW_PKG_BINDIR              = $(JWBDIR)/bin
JWB_SCRIPT_DIR               = $(firstword $(wildcard ./$(JWBDIR_NAME)/scripts $(JW_PKG_BINDIR)) jwb-script-dir-not-found)
JW_PKG_REMOTE_BINDIR       = /opt/jw-pkg/bin

SHELL                        = /bin/bash -o pipefail +H
PROJECTS_TXT                ?= projects.txt
JW_PKG_VERBOSE            ?= false
BASE_PKGS                    = git make sudo time xdg-utils python3
PREREQ_RELEASE              ?= pull
ifneq ($(JANWARE_USER),)
  export JANWARE_USER
endif

ifneq ($(GIT_ASKPASS),)
  GIT_ASKPASS               := $(realpath $(GIT_ASKPASS))
endif

ifneq ($(SSH_ASKPASS),)
  SSH_ASKPASS               := $(realpath $(SSH_ASKPASS))
endif

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

ifneq ($(wildcard $(PROJECTS_TXT)),)
  PROJECTS                  ?= $(shell cat $(PROJECTS_TXT) | sed '/^ *\#/ d')
else
  PROJECTS                  ?= $(shell ls -d */GNUmakefile */Makefile 2>/dev/null | sed 's%/[^/]*%%' | sort -u)
endif

ifeq ($(JW_PKG_VERBOSE),true)
  SSH_WRAPPER_TRACE         ?= -x
endif

export JW_PKG_VERBOSE

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

CWD                         := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
GET_OS_SH                    = /bin/bash $(firstword $(wildcard $(JWB_SCRIPT_DIR)/get-os.sh $(JW_PKG_BINDIR)/get-os.sh) get-os-sh-not-found)
SSH_WRAPPER_SH              := $(CWD)/ssh-wrapper.sh

EXCLUDES_FILE               ?= exclude.txt
EXCLUDES_FILES               = $(wildcard exclude-$(shell $(GET_OS_SH) name 2>/dev/null).txt exclude-$(shell $(GET_OS_SH) 2>/dev/null).txt $(EXCLUDES_FILE))
ifneq ($(EXCLUDES_FILES),)
  EXCLUDE_FROM_BUILD        += $(shell sed 's/\#.*//g' $(EXCLUDES_FILES))
endif
OFFLINE                     ?= false
OFFLINE_PROJECTS            ?= $(EXCLUDE_FROM_BUILD)

TEXT_FILES_CACHE            ?= text-files.txt

ifeq ($(OFFLINE),true)
  UNAVAILABLE_TARGETS       ?= pull.done update.done clone.done
else
  UNAVAILABLE_TARGETS       ?=
endif

ifneq ($(origin JW_PKG_SSH),undefined)
  export GIT_SSH            := $(JW_PKG_SSH)
else
  export GIT_SSH            := $(SSH_WRAPPER_SH)
endif

ifeq ($(filter pkg-%,$(MAKECMDGOALS)),)
  JW_PKG_SSH_EXTRA_OPTS += -o StrictHostKeyChecking=no -o ControlMaster=auto -o ControlPath=/tmp/%r@jw-pkg:%h:%p -o ControlPersist=3m
  ifneq ($(JANWARE_USER),)
    JW_PKG_SSH_EXTRA_OPTS += -l $(JANWARE_USER)
  endif
  export JW_PKG_SSH_EXTRA_OPTS
endif

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

# non-interactive mode
INTERACTIVE                 ?= true
ifneq ($(INTERACTIVE),true)
  DASH_Y                    := -y
endif

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

BROWSER                     ?= xdg-open
EDITOR                      ?= xdg-open
ifeq ($(TIME),)
  TIME                       = $(shell which time) -p
endif
PROJECTS_PY                  = $(TIME) python3 $(JWB_SCRIPT_DIR)/jw-projects.py --prefix $(shell pwd) $(PROJECTS_PY_EXTRA_OPTS)
PROJECTS_PY_BUILD            = $(PROJECTS_PY) build $(PROJECTS_PY_EXTRA_BUILD_OPTS)

PGIT_SH                     := /bin/bash $(JWB_SCRIPT_DIR)/pgit.sh
ifneq ($(origin PROJECTS_DIR_REMOTE_BASE),undefined)
  PGIT_SH                   += --remote-base $(PROJECTS_DIR_REMOTE_BASE)
endif
PGIT_SH_CLONE               := $(PGIT_SH) clone
PGIT_SH_CLONE_DEFAULT        = $(PGIT_SH_CLONE) $(PGIT_SH_OPTS_NETWORK)
ifneq ($(JANWARE_USER),)
  PGIT_SH_OPTS_NETWORK      += --login $(JANWARE_USER)
endif
ifneq ($(CLONE_FROM_USER),)
  PGIT_SH_CLONE_DEFAULT     += --refspec $(CLONE_FROM_USER)
endif
ifneq ($(OFFLINE_PROJECTS),)
  export PGIT_IGNORE         = $(OFFLINE_PROJECTS)
endif
ifneq ($(JANWARE_USER),)
  PGIT_SH_CLONE_DEFAULT     += --create-remote-user-repos
endif

PURGE_SH                     = /bin/bash $(firstword $(wildcard $(JWB_SCRIPT_DIR)/purge-stale-projects.sh $(JW_PKG_BINDIR)/purge-stale-projects.sh) purge-not-found)
PKG_MANAGER_SH              ?= /bin/bash $(firstword $(wildcard $(JWB_SCRIPT_DIR)/pkg-manager.sh $(JW_PKG_BINDIR)/pkg-manager.sh) pkg-manager-not-found)
CREATE_PROJECT_SH           ?= /bin/bash $(firstword $(wildcard $(JWB_SCRIPT_DIR)/jw-pkg-create-project.sh $(JW_PKG_BINDIR)/jw-pkg-create-project.sh) jw-pkg-create-project-not-found)
LIST_VCS_FILES_SH            = /bin/bash $(firstword $(wildcard $(JWB_SCRIPT_DIR)/scm.sh $(JW_PKG_BINDIR)/scm.sh) scm-sh-not-found) ls-files
GIT_SRV_ADMIN_SH             = JW_PKG_SSH_EXTRA_OPTS="$(JW_PKG_SSH_EXTRA_OPTS)" $(GIT_SSH) $(JANWARE_USER)@git.janware.com $(JW_PKG_REMOTE_BINDIR)/git-srv-admin.sh

# ------------ projects to be built

TARGET_PROJECTS              = $(filter-out $(EXCLUDE_FROM_BUILD),$(PROJECTS))
BUILD_PROJECTS               = $(shell $(PROJECTS_PY_BUILD) --build-order all $(TARGET_PROJECTS))
GIT_PROJECTS                 = $(patsubst %/,%,$(dir $(wildcard $(addsuffix /.git,$(BUILD_PROJECTS)))))

# ------------ targets

# --- mandatory targets

all: $(filter-out $(UNAVAILABLE_TARGETS),pull.done)
	$(PROJECTS_PY_BUILD) $@ $(TARGET_PROJECTS)
clean: clean-dirs
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 targets

rebuild: clean purge pull subdirs-all

subdirs-%:
	FORCE_REBUILD_SUBDIRS=true make $*

# --- informative-only targets

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

status: $(SSH_WRAPPER_SH)

build-order-%: $(filter-out $(UNAVAILABLE_TARGETS),pull.done)
	$(PROJECTS_PY_BUILD) --build-order $* $(TARGET_PROJECTS) | sed 's/  */\n/g'

build-order: build-order-all

echo-build-deps:
	@$(PROJECTS_PY) required-os-pkg --skip-excluded --flavours "build" $(TARGET_PROJECTS)

echo-install-deps:
	@$(PROJECTS_PY) required-os-pkg --skip-excluded --flavours "build run" $(TARGET_PROJECTS)

echo-release-deps:
	@$(PROJECTS_PY) required-os-pkg --skip-excluded --flavours "build run release" $(TARGET_PROJECTS)
echo-os:
	@$(GET_OS_SH)

echo-projects:
	@echo $(PROJECTS)

echo-target-projects:
	@echo $(TARGET_PROJECTS)

echo-excludes:
	@echo $(EXCLUDE_FROM_BUILD)

edit-%: | $(TEXT_FILES_CACHE)
	$(EDITOR) $(shell grep "/$*$$" $(TEXT_FILES_CACHE))

distclean: clean.text-files-cache
clean.text-files-cache:
	rm -f $(TEXT_FILES_CACHE)
list-files:
	@realpath PROJECTS_MAKEFILE_NAME
	@for p in $(BUILD_PROJECTS); do \
		$(LIST_VCS_FILES_SH) -znf $$p | sed -z "s/^/$$p\//" | \
			xargs -0 realpath -q ;\
	done
$(TEXT_FILES_CACHE):
	@make -s text-files-update
text-files-update:
	make -s --no-print-directory list-files | tr '\n' '\0' | xargs -0 file -N | sed "/:.*text/I !d; s/:.*//" > $(TEXT_FILES_CACHE).tmp
	mv $(TEXT_FILES_CACHE).tmp $(TEXT_FILES_CACHE)
text-files-update-all:
	@PROJECTS_TXT= make text-files-update
text-files-list list-text-files: | $(TEXT_FILES_CACHE)
	@cat $(TEXT_FILES_CACHE)
text-files-list-0 list-text-files-0: | $(TEXT_FILES_CACHE)
	@cat $(TEXT_FILES_CACHE) | tr '\n' '\0'

cloc:
	for p in $(GIT_PROJECTS); do \
		git -C $$p submodule status | sed "s|^ *\([^ ]\+\) \+\([^ ]\+\)  *.*|$$p/\2|" ;\
	done > cloc-ignore.txt
	for p in $(foreach s,dist include bin lib,$(addsuffix /$s,$(BUILD_PROJECTS))); do \
		echo $$p >> cloc-ignore.txt ;\
	done
	cloc --exclude-list-file=cloc-ignore.txt $(BUILD_PROJECTS)

# --- package-related targets

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

pkg-install-build-deps:
	$(PKG_MANAGER_SH) install $(DASH_Y) "$(BASE_PKGS) $(shell $(PROJECTS_PY) required-os-pkg --skip-excluded --flavours build $(TARGET_PROJECTS))"

pkg-install-release-deps:
	$(PKG_MANAGER_SH) install $(DASH_Y) "$(BASE_PKGS) $(shell $(PROJECTS_PY) required-os-pkg --skip-excluded --flavours 'build run release' $(TARGET_PROJECTS))"

pkg-release-reinstall: $(PREREQ_RELEASE)

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

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

pkg-%: $(filter-out $(UNAVAILABLE_TARGETS),pull.done)
	$(PROJECTS_PY_BUILD) $@ $(TARGET_PROJECTS)

# --- generic cleanup targets

clean-dirs:
	echo $(sort $(dir $(wildcard */*.done))) | xargs -r $(PROJECTS_PY_BUILD) clean

clean-all-dirs:
	$(PROJECTS_PY_BUILD) clean $(PROJECTS)
	make clean-dirs

purge: $(SSH_WRAPPER_SH)
ifneq ($(PURGE_SH),/bin/bash purge-not-found)
	$(PURGE_SH) --vcs git
endif

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

done.clean:
	rm -f *.done

# --- collab targets

list-maintainers: $(SSH_WRAPPER_SH)
	$(GIT_SRV_ADMIN_SH) $@

update pull: purge git-clone
	touch pull.done

sync: pull push

sync-all: pull-all push-all

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

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

diff-all diff: $(SSH_WRAPPER_SH)
	$(PGIT_SH) diff

git-push push: $(SSH_WRAPPER_SH)
	$(PGIT_SH) push $(PGIT_SH_OPTS_NETWORK)

git-push-all: $(SSH_WRAPPER_SH)
	$(PGIT_SH) push $(PGIT_SH_OPTS_NETWORK) --all --recurse-submodules=on-demand

git-diff: $(SSH_WRAPPER_SH)
	$(PGIT_SH) diff

git-short-diff: $(SSH_WRAPPER_SH)
	$(PGIT_SH) diff --shortstat

git-status:
	$(PGIT_SH) status -uno


git-pull: $(SSH_WRAPPER_SH)
	$(PGIT_SH_CLONE_DEFAULT)

git-pull-mini: $(SSH_WRAPPER_SH)
	PGIT_CLONE_PROJECTS="$(patsubst %/.git,%,$(wildcard $(addsuffix /.git,$(shell make -s build-order))))" $(PGIT_SH_CLONE_DEFAULT)

git-pull-all: $(SSH_WRAPPER_SH)
	$(PGIT_SH) pull $(PGIT_SH_OPTS_NETWORK) --all

git-clone: $(SSH_WRAPPER_SH)
	$(PGIT_SH_CLONE_DEFAULT)
	touch clone.done

git-clone-%: $(SSH_WRAPPER_SH)
	$(PGIT_SH_CLONE_DEFAULT)

git-show-non-master-branches:
	@$(PGIT_SH) 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

git-show-pushable-master-branches:
	@for p in $(BUILD_PROJECTS); do \
		if git -C $$p log --oneline origin/master.. | grep . >/dev/null; then \
			echo ======================= $$p ;\
			git -C $$p log --oneline origin/master.. ;\
		fi ;\
	done

# git-echo-link-<filename> returns a string functioning as hyperlink to
# matching files in git when embedded into a janware wiki or ticket.
git-echo-links-%: | $(TEXT_FILES_CACHE)
	sed "/$*$$/!d; s%$(CWD)%%; s|^|\n  \[\[jgit>/proj/$(JANWARE_USER)/|; s/$$/|$*\]\]\n/" $(TEXT_FILES_CACHE)

git-update-project-descriptions: $(SSH_WRAPPER_SH)
	$(GIT_SRV_ADMIN_SH) -j update-descriptions all

git-pull-%: $(SSH_WRAPPER_SH)
	$(PGIT_SH_CLONE) $(PGIT_SH_OPTS_NETWORK) --refspec "$*:master:master"

git-commit:
	$(PGIT_SH) commit

# --- rules

$(SSH_WRAPPER_SH): $(PROJECTS_MAKEFILE_NAME)
	/bin/echo -e '#!/bin/bash $(SSH_WRAPPER_TRACE)\n\nexec /usr/bin/ssh $$JW_PKG_SSH_EXTRA_OPTS "$$@"' > $@.tmp
	chmod 700 $@.tmp
	mv $@.tmp $@
ssh-wrapper: $(SSH_WRAPPER_SH)
clean.ssh-wrapper:
	rm -f $(SSH_WRAPPER_SH)
distclean: clean.ssh-wrapper

pull.done: $(filter-out $(UNAVAILABLE_TARGETS), clone.done)
	touch $@

clone.done: $(filter-out $(UNAVAILABLE_TARGETS),$(SSH_WRAPPER_SH))
	$(PGIT_SH_CLONE_DEFAULT)
	touch $@