# This file defines the rule to fuse the platform.zip into the current PDK build.

.PHONY: pdk fusion
pdk fusion: $(DEFAULT_GOAL)

# What to build:
# pdk fusion if:
# 1) the platform.zip exists in the default location
# or
# 2) PDK_FUSION_PLATFORM_ZIP is passed in from the environment
# or
# 3) fusion is a command line build goal,
#    PDK_FUSION_PLATFORM_ZIP is needed anyway, then do we need the 'fusion' goal?
# otherwise pdk only if:
# 1) pdk is a command line build goal
# or
# 2) TARGET_BUILD_PDK is passed in from the environment

# TODO: what's the best default location?
_pdk_fusion_default_platform_zip := vendor/pdk/$(TARGET_DEVICE)/$(TARGET_PRODUCT)-$(TARGET_BUILD_VARIANT)/platform/platform.zip
ifneq (,$(wildcard $(_pdk_fusion_default_platform_zip)))
$(info $(_pdk_fusion_default_platform_zip) found, do a PDK fusion build.)
PDK_FUSION_PLATFORM_ZIP := $(_pdk_fusion_default_platform_zip)
TARGET_BUILD_PDK := true
endif

ifneq (,$(filter pdk fusion, $(MAKECMDGOALS)))
TARGET_BUILD_PDK := true
ifneq (,$(filter fusion, $(MAKECMDGOALS)))
ifndef PDK_FUSION_PLATFORM_ZIP
  $(error Specify PDK_FUSION_PLATFORM_ZIP to do a PDK fusion.)
endif
endif  # fusion
endif  # pdk or fusion


# additional items to add to platform.zip for platform-java build
# For these dirs, add classes.jar and javalib.jar from the dir to platform.zip
# all paths under out dir
PDK_PLATFORM_JAVA_ZIP_JAVA_LIB_DIR := \
	target/common/obj/JAVA_LIBRARIES/android_stubs_current_intermediates \
	target/common/obj/JAVA_LIBRARIES/core_intermediates \
	target/common/obj/JAVA_LIBRARIES/core-junit_intermediates \
	target/common/obj/JAVA_LIBRARIES/ext_intermediates \
	target/common/obj/JAVA_LIBRARIES/framework_intermediates \
	target/common/obj/JAVA_LIBRARIES/android.test.runner_intermediates
# not java libraries
PDK_PLATFORM_JAVA_ZIP_CONTENTS := \
	target/common/obj/APPS/framework-res_intermediates/package-export.apk \
	target/common/obj/APPS/framework-res_intermediates/src/R.stamp
PDK_PLATFORM_JAVA_ZIP_CONTENTS += $(foreach lib_dir,$(PDK_PLATFORM_JAVA_ZIP_JAVA_LIB_DIR),\
    $(lib_dir)/classes.jar $(lib_dir)/javalib.jar)


ifdef PDK_FUSION_PLATFORM_ZIP
TARGET_BUILD_PDK := true
ifeq (,$(wildcard $(PDK_FUSION_PLATFORM_ZIP)))
  $(error Cannot find file $(PDK_FUSION_PLATFORM_ZIP).)
endif

_pdk_fusion_intermediates := $(call intermediates-dir-for, PACKAGING, pdk_fusion)
_pdk_fusion_stamp := $(_pdk_fusion_intermediates)/pdk_fusion.stamp

_pdk_fusion_file_list := $(shell unzip -Z -1 $(PDK_FUSION_PLATFORM_ZIP) \
    '*[^/]' -x 'target/common/*' 2>/dev/null)
_pdk_fusion_java_file_list := \
	$(shell unzip -Z -1 $(PDK_FUSION_PLATFORM_ZIP) 'target/common/*' 2>/dev/null)
_pdk_fusion_files := $(addprefix $(_pdk_fusion_intermediates)/,\
    $(_pdk_fusion_file_list) $(_pdk_fusion_java_file_list))
ifneq ($(_pdk_fusion_java_file_list),)
TARGET_BUILD_PDK_JAVA := true
endif

$(_pdk_fusion_stamp) : $(PDK_FUSION_PLATFORM_ZIP)
	@echo "Unzip $(dir $@) <- $<"
	$(hide) rm -rf $(dir $@) && mkdir -p $(dir $@)
	$(hide) unzip -qo $< -d $(dir $@)
	$(call split-long-arguments,-touch,$(_pdk_fusion_files))
	$(hide) touch $@


$(_pdk_fusion_files) : $(_pdk_fusion_stamp)


# Implicit pattern rules to copy the fusion files to the system image directory.
# Note that if there is already explicit rule in the build system to generate a file,
# the pattern rule will be just ignored by make.
# That's desired by us: we want only absent files from the platform zip package.
# Copy with the last-modified time preserved, never follow symbolic links.
$(PRODUCT_OUT)/% : $(_pdk_fusion_intermediates)/% $(_pdk_fusion_stamp)
	@mkdir -p $(dir $@)
	$(hide) cp -fpPR $< $@

ifeq (true,$(TARGET_BUILD_PDK_JAVA))

define JAVA_dependency_template
$(OUT_DIR)/$(strip $(1)): $(_pdk_fusion_intermediates)/$(strip $(1)) $(OUT_DIR)/$(strip $(2)) \
  $(_pdk_fusion_stamp)
	@mkdir -p $$(dir $$@)
	$(hide) cp -fpPR $$< $$@
endef

# needs explicit dependency as package-export.apk is not explicitly pulled
$(eval $(call JAVA_dependency_template,\
target/common/obj/APPS/framework-res_intermediates/src/R.stamp,\
target/common/obj/APPS/framework-res_intermediates/package-export.apk))

# javalib.jar should pull classes.jar as classes.jar is not explicitly pulled.
$(foreach lib_dir,$(PDK_PLATFORM_JAVA_ZIP_JAVA_LIB_DIR),\
$(eval $(call JAVA_dependency_template,$(lib_dir)/javalib.jar,\
$(lib_dir)/classes.jar)))

# implicit rules for all others
$(TARGET_COMMON_OUT_ROOT)/% : $(_pdk_fusion_intermediates)/target/common/% $(_pdk_fusion_stamp)
	@mkdir -p $(dir $@)
	$(hide) cp -fpPR $< $@
endif

ALL_PDK_FUSION_FILES := $(addprefix $(PRODUCT_OUT)/, $(_pdk_fusion_file_list))

endif # PDK_FUSION_PLATFORM_ZIP

ifeq ($(TARGET_BUILD_PDK),true)

ifeq ($(TARGET_BUILD_PDK_JAVA),)

# SDK used for Java build under PDK
PDK_BUILD_SDK_VERSION := $(lastword $(TARGET_AVAILABLE_SDK_VERSIONS))
$(info PDK Build uses SDK $(PDK_BUILD_SDK_VERSION))

else # PDK_JAVA

$(info PDK Build uses the current platform API)

endif # PDK_JAVA

endif # BUILD_PDK