# $Id$
REPOFORGE := repoforge
include package.$(REPOFORGE)

PWD := $(shell pwd)
WORK_DIR := work
TEMP_DIR := temp
BUILD_DIR := build

# Function to find out absolute path
absname = $(if $(filter /%,$(1)),$(1),$(PWD)/$(1))

# Structure of repoforge tree
ifndef sources_dir
SOURCES_DIR_ORIG := sources
else
SOURCES_DIR_ORIG := $(sources_dir)
endif
SOURCES_DIR := $(call absname,$(SOURCES_DIR_ORIG))
ifndef specs_dir
SPECS_DIR_ORIG := $(SOURCES_DIR_ORIG)
else
SPECS_DIR_ORIG := $(specs_dir)
endif
SPECS_DIR := $(call absname,$(SPECS_DIR_ORIG))

PATCH_NAME := $(title)-$(version)-$(REPOFORGE).patch
PATCH := $(SOURCES_DIR)/$(PATCH_NAME)
PATCH_LINK := $(PATCH_NAME)
DATE := $(shell date +'%Y%m%d')
HISTORY := "History"
EXCLUDE := exclude.$(REPOFORGE)
AUTO_EXCLUDE := auto_exclude.$(REPOFORGE)

#------------------- Check title and version
ifndef title
  ${error Package title is not specified.}
endif

#------------------- Find out base package system
PKG_LEGAL := 0
ifndef pkg
  ${error Package system is not specified.}
endif

ifeq "$(pkg)" "rpm"
  PKG_LEGAL := 1
  RPM := rpm
  RPMBUILD := $(shell \
    rpmbuild --help 2>/dev/null >/dev/null; \
    if [ $$? == "0" ]; then \
	echo rpmbuild; \
    else \
	echo rpm; \
    fi \
    )
  RPMOPTS := --define="_sourcedir $(SOURCES_DIR)" --define="_builddir $(PWD)/$(BUILD_DIR)" --define="_specdir $(SPECS_DIR)"
  PKG_SPEC_NAME := $(title).spec
  PKG_SPEC := $(SPECS_DIR)/$(PKG_SPEC_NAME)
  PKG_SPEC_LINK := $(title).spec
  PKG_WITH_PATCH := --with $(REPOFORGE)_patch
  PKG_WITHOUT_PATCH := --without $(REPOFORGE)_patch
  PKG_BP_BUILD := $(RPMBUILD) $(RPMOPTS) -bp --nodeps
  PKG_BC_BUILD := $(RPMBUILD) $(RPMOPTS) -bc
  PKG_BS := $(RPMBUILD) $(RPMOPTS) -bs
  PKG_BB := $(RPMBUILD) $(RPMOPTS) -bb
  PKG_TREE := $(RPM) $(RPMOPTS) -ivh --nodeps
endif
ifeq "$(pkg)" "deb"
  ${warning Debian package system is not supported yet.}
endif

ifeq ($(PKG_LEGAL),0)
  ${error Unsupported package system $(pkg).}
endif

# Public targets

all: buildprep

clean: temp_del build_del clean_rm

init: work_dir work_link build_bp

bp: temp_dir temp_link build_bp cp_build_work work_link temp_del

bc: temp_dir temp_link build_bc cp_build_work work_link temp_del

srpm: bs
bs: temp_dir temp_link orig patch_diff build_bs work_link temp_del

rpm: bb
bb: temp_dir temp_link orig patch_diff build_bb work_link temp_del

patch: temp_dir temp_link orig patch_diff work_link temp_del

prep: rpmize work_link

repair: rep
rep: clean prep

copy: cop
cop: cp_build_work work_link temp_del 

# Internal targets

clean_rm:
	@$(RM) $(PATCH) $(PATCH_LINK) $(AUTO_EXCLUDE) $(HISTORY)
	@if [ -h $(PKG_SPEC_LINK) ]; then \
		$(RM) $(PKG_SPEC_LINK); \
	fi

init_svn:
	@echo "Add working dir $(WORK_DIR) to the repository..."
	@status=`svn -N st $(WORK_DIR)`; \
	if [[ "$$status" =~ "^\?" ]]; then \
		svn add $(WORK_DIR); \
		svn ci -m "Initial working dir. Created by repoforge init command." $(WORK_DIR); \
#		echo "OK"; \
	else \
		echo "Directory $(WORK_DIR) is already in repository."; \
	fi;

build_bp:
	@echo "Build source tree...";
	$(PKG_BP_BUILD) $(PKG_SPEC)

orig:
	$(PKG_BP_BUILD) $(PKG_WITHOUT_PATCH) $(PKG_SPEC)

build_bc:
	@echo "Build package...";
	$(PKG_BC_BUILD) $(PKG_SPEC)

cp_build_work:
	@echo "Copy data from temporary to working directory..."; \
	tar -c -C $(BUILD_DIR) `ls -A $(BUILD_DIR)` | tar -x -C $(WORK_DIR)

temp_dir:
	@if [ ! -d $(TEMP_DIR) ]; then \
		mkdir $(TEMP_DIR); \
	else \
		rm -Rf $(TEMP_DIR)/*; \
	fi; \

temp_del:
	@rm -Rf $(TEMP_DIR)

work_dir:
	@echo "Creating directory $(WORK_DIR) ..."
	@if [ ! -d $(WORK_DIR) ]; then \
		mkdir $(WORK_DIR); \
	else \
		rm -Rf $(WORK_DIR)/*; \
	fi

work:
	@echo "Preparing directory $(WORK_DIR) ..."
	$(PKG_BP_WORK) $(PKG_WITHOUT_PATCH) $(PKG_SPEC)

work_del:
	@rm -Rf $(WORK_DIR)

buildprep: patch

patch_diff:
	@echo "Making patch..."
	@> $(AUTO_EXCLUDE)
	@svn st $(WORK_DIR) | grep -E "^\?" | sed -e "s|^\? *[^/]*/||" >> $(AUTO_EXCLUDE)
	@LC_ALL=en_US diff --exclude=".svn" -uNrp $(BUILD_DIR) $(WORK_DIR) | filterdiff -p 1 -X $(AUTO_EXCLUDE) -X $(EXCLUDE) | filterdiff > $(PATCH); true
	@if [ ! -f $(PATCH_LINK) ]; then \
		ln -s -f -n $(SOURCES_DIR_ORIG)/$(PATCH_NAME) $(PATCH_LINK); \
	fi

work_link:
	@ln -f -n -s $(WORK_DIR) $(BUILD_DIR)

temp_link:
	@ln -f -n -s $(TEMP_DIR) $(BUILD_DIR)

build_del:
	@if [ -h "$(BUILD_DIR)" ]; then \
		$(RM) $(BUILD_DIR); \
	fi


rpmize: spec_link

spec_link:
ifeq "$(pkg)" "rpm"
	@if [ ! -f $(PKG_SPEC_LINK) ]; then \
		ln -s -n -f $(SPECS_DIR_ORIG)/$(PKG_SPEC_NAME) $(PKG_SPEC_LINK); \
	fi
endif

tree:
	@if [ ! -f "$(SOURCES_DIR)" ]; then \
		mkdir -p $(SOURCES_DIR); \
	fi
ifeq "$(pkg)" "rpm"
	@if [ ! -f "$(SPECS_DIR)" ]; then \
		mkdir -p $(SPECS_DIR); \
	fi
endif
	@if [ -f "$(SOURCE)" ]; then \
		$(PKG_TREE) $(SOURCE); \
	fi

build_bs:
	@echo "Building SRPM..."
	$(PKG_BS) $(PKG_SPEC)

build_bb:
	@echo "Building RPM..."
	$(PKG_BB) $(PKG_SPEC)

history:
	@> $(HISTORY)
	@echo "Project: "$(TITLE) >> $(HISTORY)
	@echo "Version: "$(version) >> $(HISTORY)
	@echo "Date: "`date` >> $(HISTORY)
	-@svn update; \
	if [ $$? == 0 ]; then \
		svn info | grep "Revision:" >> $(HISTORY); \
		echo "History:" >> $(HISTORY); \
		svn -v log >> $(HISTORY); \
	fi;

.PHONY: all clean clean_rm install archive rpm srpm history patch build_del buildprep prep work temp work_del temp_del bp bb bs bc init temp_bp temp_cp temp_bc tree work_link temp_link build_bp orig build_bb build_bs