#
# Copyright (C) 2008-2014 Tvheadend Foundation CIC
#
# This file is part of Tvheadend
#
# Tvheadend is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Tvheadend is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Tvheadend.  If not, see <http://www.gnu.org/licenses/>.
#
# For more details, including opportunities for alternative licensing,
# please read the LICENSE file.
#
# ############################################################################

# ############################################################################
# Generic makefile for handling static 3rd party libraries
# ############################################################################

#
# Required inputs
#
#   LIB_NAME			- The name of the library used in files uploaded/downloaded
#   LIB_FILES			- The files to be packaged
#
# Optional inputs
#
#   PCLOUD_CACHE    - Use cached builds from pcloud
#   PCLOUD_USER     - The pcloud user account for uploads
#   PCLOUD_PASS     - The pcloud password
#   PCLOUD_BASEDIR  - The base directory for uploads
#   PCLOUD_HASHDIR  - The public hash for the base directory for downloads
#

MAKEFILE      ?= $(firstword $(MAKEFILE_LIST))

# ./configure override
PCLOUD_CACHE ?= $(CONFIG_PCLOUD_CACHE)

default: libcacheput

# Setup environment for scripts
export ARCH
export CODENAME
export ROOTDIR
export BUILDDIR
export LIBDIR
export PCLOUD_CACHE
export PCLOUD_USER
export PCLOUD_PASS
export PCLOUD_BASEDIR
export PCLOUD_HASHDIR

LIB_STATIC_STAMP := $(BUILDDIR)/$(LIB_NAME)_static_stamp

define LIBCACHEGET_TIMESTAMP
	@touch $(LIB_STATIC_STAMP)
endef

# Download cache
.PHONY: libcacheget
libcacheget:
ifeq ($(PCLOUD_CACHE),yes)
	@if ! test -f $(LIB_STATIC_STAMP); then\
           ( $(ROOTDIR)/support/lib.sh download $(LIB_NAME) &&\
	     $(ROOTDIR)/support/lib.sh unpack $(LIB_NAME) ) || true;\
           touch $(LIB_STATIC_STAMP);\
         fi
endif

# Download and Upload on demand
.PHONY: libcacheput
libcacheput: build
ifneq ($(PCLOUD_USER),)
	@$(ROOTDIR)/support/lib.sh upload $(LIB_NAME) $(LIB_FILES)
endif

# ############################################################################
# Helper routines
# ############################################################################

define DOWNLOAD
	@mkdir -p $(LIB_ROOT)/build
	@if test -z "$${TVHEADEND_FILE_CACHE}"; then \
		printf "WGET            $(1)\n"; \
		wget --no-verbose --no-check-certificate -O $(2) $(1); \
	else \
		file=$$(basename $(2)); \
		cp "$$TVHEADEND_FILE_CACHE/$${file}" $(2); \
	fi
	@{ \
		sum=$$(sha1sum $(2) | cut -d ' ' -f 1); \
		printf "SHA1SUM test '$${sum}' == '$(3)': "; \
		test "y$${sum}" = "y$(3)"; \
	}
	@echo "OK"
endef

define UNTAR
	@{ \
		printf "UNTAR           $(1)\n"; \
		tar x -C $(LIB_ROOT) -$(2)f $(LIB_ROOT)/$(1); \
	}
endef

define PATCH
	@{ \
		cd $(LIB_ROOT)/$(1); \
		for f in $(2); do \
			p=$(ROOTDIR)/support/patches/$${f}; \
			printf "PATCH           $${p}\n"; \
			patch -p0 -i $${p}; \
		done \
	}
endef

# ############################################################################
# Editor Configuration
#
# vim:sts=2:ts=2:sw=2:et!
# ############################################################################