#
# Project Home:
# ============
# https://github.com/libcgroup/libcgroup
#
# Clone:
# =====
# git clone https://github.com/libcgroup/libcgroup.git
#
# Downloads:
# =========
# https://github.com/libcgroup/libcgroup/releases
#

url        = https://github.com/libcgroup

repo_name  = libcgroup
pkg_name   = libcgroup
suffix     = tar.xz

versions   = 3.1.0

# List of tags to be extracted:
TAGS       = $(addprefix v, $(versions))

git_repo   = .git_clone
tarballs   = $(addsuffix .tar.xz, $(addprefix $(pkg_name)-, $(versions)))
sha1s      = $(addsuffix .sha1sum, $(tarballs))

TARGETS = repository_clean


all: $(TARGETS)

.PHONY: downloads_clean repository_clean

$(git_repo):
	@echo -e "\n======= Clone $(repo_name).git repository =======\n"
	@rm -rf $(repo_name)
	@git clone $(url)/$(repo_name).git $(repo_name)
	@touch $@

$(tarballs): $(git_repo)
	@for version in $(versions) ; do \
	  tag=v`echo $$version` ; \
	  if [ ! -f $(repo_name)-$$version.$(suffix) ]; then \
	    echo -e "\n======= Creating '$(repo_name)-$$version.$(suffix)' snapshot =======" ; \
	    ( cd $(repo_name) && \
	      git submodule update --init ; \
	      git archive --format=tar --prefix=$(repo_name)-$${version}/ --output=../$(repo_name)-$${version}.tar $${tag} ; \
	      cmd="git submodule foreach --recursive 'git archive --format=tar --prefix=$(repo_name)-$${version}/\$$sm_path/ HEAD --output=\$$toplevel/../$(repo_name)-$${version}-sub-\$$sha1.tar'" ; \
	      eval $${cmd} ; \
	    ) ; \
	    for tar in `ls $(repo_name)-$${version}-sub-*.tar` ; do \
	      tar --concatenate --file $(repo_name)-$${version}.tar $${tar} ; \
	    done ; \
	    rm -f $(repo_name)-$${version}-sub-*.tar ; \
	    xz $(repo_name)-$${version}.tar ; \
	    tar xJf $(pkg_name)-$$version.$(suffix) ; \
	    ( cd $(pkg_name)-$$version ; \
	      autoreconf -fi ; rm -rf autom4te.cache ; rm -f *~ ; \
	      find . -type f \( -name ".gitignore" -o -name ".gitmodules" -o -name ".dummy" \) -exec rm -f {} \; ; \
	      for dir in `find . -type d -name ".github" -print` ; do \
	        rm -rf $${dir} ; \
	      done ; \
	    ) ; \
	    tar cJf $(pkg_name)-$$version.$(suffix) $(pkg_name)-$$version ; \
	    rm -rf $(pkg_name)-$$version ; \
	  fi ; \
	done

$(sha1s): %.tar.xz.sha1sum : %.tar.xz
	@for tarball in $< ; do \
	  echo -e "\n======= Calculation the '$$tarball' sha1sum =======" ; \
	  sha1sum --binary $$tarball > $$tarball.sha1sum ; \
	done

repository_clean: $(sha1s)
	@echo -e "\n======= Remove cloned $(repo_name).git repository =======\n"
	@rm -rf $(git_repo) $(repo_name)

downloads_clean:
	@rm -rf $(tarballs) $(sha1s)
	@rm -rf $(git_repo) $(repo_name)