###############################################################################
## FUNCTIONS
###############################################################################

###############################################################################
## Colored output
###############################################################################

# Enable colored output
ifeq ($(SONIC_CONFIG_ENABLE_COLORS),y)
ifeq ($(MAKE_TERMOUT),)
RED=\033[1;31m
PURPLE=\033[1;35m
CYAN=\033[1;36m
GREEN=\033[1;32m
GRAY=\033[0m
endif
endif

ifeq ($(BUILD_LOG_TIMESTAMP),simple)
PROCESS_LOG_OPTION = -t
endif

# Print red colored output
# call:
#       log_red message
log_red = echo -e "$(RED)$(1)$(GRAY)"

# Print purple colored output
# call:
#       log_purple message
log_purple = echo -e "$(PURPLE)$(1)$(GRAY)"

# Print blue colored output
# call:
#       log_blue message
log_blue = echo -e "$(CYAN)$(1)$(GRAY)"

# Print green colored output
# call:
#       log_green message
log_green = echo -e "$(GREEN)$(1)$(GRAY)"

###############################################################################
## Logging
###############################################################################

FLUSH_LOG = rm -f $@.log

LOG_SIMPLE = &>> $(PROJECT_ROOT)/$@.log || { [ $$? -eq 0 ] || pushd $(PROJECT_ROOT) > /dev/null ; ./update_screen.sh -e $@ ; popd > /dev/null ; false ; }
LOG = < /dev/null |& $(PROJECT_ROOT)/scripts/process_log.sh $(PROCESS_LOG_OPTION) &>> $(PROJECT_ROOT)/$@.log ; test $${PIPESTATUS[-2]} -eq 0 || { [ $$? -eq 0 ] || pushd $(PROJECT_ROOT) > /dev/null ; ./update_screen.sh -e $@ ; popd > /dev/null ; false ; }

###############################################################################
## Header and footer for each target
###############################################################################
START_TIME = echo Build start time: $$(date -ud "@$($@_TSTMP_ST)") $(LOG)
END_TIME = echo Build end time: $$(date -ud "@$($@_TSTMP_END)") $(LOG)
ELAPSED_TIME = echo Elapsed time: $$(date -ud "@$$(( $($@_TSTMP_END) - $($@_TSTMP_ST) ))" +'%-Hh %-Mm %-Ss') $(LOG)

# Dump targets taht current depends on
ifeq ($(SONIC_CONFIG_PRINT_DEPENDENCIES),y)
PRINT_DEPENDENCIES = echo Dependencies for $@ are $^ $(LOG)
endif

# header for each rule
define HEADER
@
$(PRINT_DEPENDENCIES)
$(FLUSH_LOG)
$(eval $@_TSTMP_ST := $(shell date +%s))
$(START_TIME)
./update_screen.sh -a $@ $*
endef

# footer for each rule
define FOOTER
$(eval $@_TSTMP_END := `date +%s`)
$(END_TIME)
$(ELAPSED_TIME)
./update_screen.sh -d $@ $($*_CACHE_LOADED)
endef

###############################################################################
## Definition of derived target
###############################################################################

# call:
#     add_derived_package some_deb.deb, some_derived_deb
define add_derived_package
$(2)_DEPENDS += $(1)
$(2)_RDEPENDS += $($(1)_RDEPENDS)
$(2)_MAIN_DEB = $(1)
$(1)_DERIVED_DEBS += $(2)
$(2)_URL = $($(1)_URL)
$(2)_SRC_PATH = $($(1)_SRC_PATH)
$(2)_NAME = $($(1)_NAME)
$(2)_VERSION = $($(1)_VERSION)
SONIC_DERIVED_DEBS += $(2)
endef

# call:
#     add_extra_package some_deb.deb, some_extra_deb
define add_extra_package
$(2)_MAIN_DEB = $(1)
$(1)_EXTRA_DEBS += $(2)
SONIC_EXTRA_DEBS += $(2)
endef

###############################################################################
## Definition of conflict packages
###############################################################################

# call:
#     add_conflict_package some_deb.deb, conflict_deb
define add_conflict_package
$(1)_CONFLICT_DEBS += $(2)
$(2)_CONFLICT_DEBS += $(1)
endef

###############################################################################
## Definition of debug dockers
###############################################################################

# call:
#     add_dbg_docker some_docker.gz, some-docker-dbg.gz
define add_dbg_docker
$(2)_PATH = $($(1)_PATH)
$(2)_DBG_DEPENDS += $($(1)_DBG_DEPENDS)
$(2)_DBG_IMAGE_PACKAGES += $($(1)_DBG_IMAGE_PACKAGES)
$(2)_PYTHON_DEBS += $($(1)_PYTHON_DEBS)
$(2)_PYTHON_WHEELS += $($(1)_PYTHON_WHEELS)
$(2)_LOAD_DOCKERS += $($(1)_LOAD_DOCKERS)
$(2)_CACHE_MODE += $($(1)_CACHE_MODE)
$(2)_DEP_FLAGS += $($(1)_DEP_FLAGS)
$(2)_DEP_FILES += $($(1)_DEP_FILES)
$(2)_SMDEP_FILES += $($(1)_SMDEP_FILES)
$(2)_SMDEP_PATHS += $($(1)_SMDEP_PATHS)
$(2)_DEPENDS += $($(1)_DEPENDS)
$(2)_RDEPENDS += $($(1)_RDEPENDS)
$(2)_MAIN_DOCKER = $(1)
$(1)_DBG_DOCKER += $(2)
SONIC_DBG_DOCKERS += $(2)
endef


###############################################################################
## Utility functions
###############################################################################
# Recursive wildcard function
rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))

expand = $(foreach d,$(1),$(call expand,$($(d)_$(2)),$(2))) $(1)

###############################################################################
## Uninstall debs
###############################################################################
define UNINSTALL_DEBS
if [ -n "$(1)" ]; then \
    while true; do \
        if mkdir $(DEBS_PATH)/dpkg_lock &> /dev/null; then \
		    { sudo DEBIAN_FRONTEND=noninteractive dpkg -P $(foreach deb,$(1),$(firstword $(subst _, ,$(basename $(deb))))) $(LOG) && rm -d $(DEBS_PATH)/dpkg_lock && break; } || { rm -d $(DEBS_PATH)/dpkg_lock && exit 1 ; } \
        fi; \
    done; \
fi
endef

###############################################################################
## Setup overlay fs for dpkg admin directory /var/lib/dpkg
###############################################################################
define SETUP_OVERLAYFS_FOR_DPKG_ADMINDIR
upperdir=$(shell mktemp -d -p $(DPKG_ADMINDIR_PATH))
workdir=$(shell mktemp -d -p $(DPKG_ADMINDIR_PATH))
mergedir=$(shell mktemp -d -p $(DPKG_ADMINDIR_PATH))
sudo mount -t overlay overlay -olowerdir=/var/lib/dpkg,upperdir=$$upperdir,workdir=$$workdir $$mergedir
export SONIC_DPKG_ADMINDIR=$$mergedir
trap "sudo umount $$mergedir && rm -rf $$mergedir $$upperdir $$workdir" EXIT
endef


###############################################################################
## Manifest generation routine
## TODO: changelog generation
###############################################################################
# call:
#     generate_manifest some_docker.gz, version_suffix
define generate_manifest
    $(eval export version=$($(1).gz_VERSION))
    $(eval export version_suffix=$(2))
    $(eval export name=$($(1).gz_CONTAINER_NAME))
    $(eval export package_name=$($(1).gz_PACKAGE_NAME))
    $(eval export asic_service=$(shell [ -f files/build_templates/per_namespace/$(name).service.j2 ] && echo true || echo false))
    $(eval export host_service=$(shell [ -f files/build_templates/$(name).service.j2 ] && echo true || echo false))
    $(eval export depends=$($(1).gz_PACKAGE_DEPENDS))
    $(eval export requires=$($(1).gz_SERVICE_REQUIRES))
    $(eval export after=$($(1).gz_SERVICE_AFTER))
    $(eval export before=$($(1).gz_SERVICE_BEFORE))
    $(eval export dependent_of=$($(1).gz_SERVICE_DEPENDENT_OF))
    $(eval export warm_shutdown_after=$($*.gz_WARM_SHUTDOWN_AFTER))
    $(eval export warm_shutdown_before=$($*.gz_WARM_SHUTDOWN_BEFORE))
    $(eval export fast_shutdown_after=$($*.gz_FAST_SHUTDOWN_AFTER))
    $(eval export fast_shutdown_before=$($*.gz_FAST_SHUTDOWN_BEFORE))
    $(eval export privileged=$($(1).gz_CONTAINER_PRIVILEGED))
    $(eval export volumes=$($(1).gz_CONTAINER_VOLUMES))
    $(eval export tmpfs=$($(1).gz_CONTAINER_TMPFS))
    $(eval export config_cli_plugin=$($(1).gz_CLI_CONFIG_PLUGIN))
    $(eval export show_cli_plugin=$($(1).gz_CLI_SHOW_PLUGIN))
    $(eval export clear_cli_plugin=$($(1).gz_CLI_CLEAR_PLUGIN))
    $(eval export support_rate_limit=$($(1).gz_SUPPORT_RATE_LIMIT))
    j2 --customize scripts/j2cli/json_filter.py files/build_templates/manifest.json.j2 > $($(1).gz_PATH)/manifest.common.json
    if [ -f $($*.gz_PATH)/manifest.part.json.j2 ]; then
        j2 --customize scripts/j2cli/json_filter.py $($(1).gz_PATH)/manifest.part.json.j2 > $($(1).gz_PATH)/manifest.part.json
        jq -s '.[0] * .[1]' $($(1).gz_PATH)/manifest.common.json $($(1).gz_PATH)/manifest.part.json > $($(1).gz_PATH)/manifest.json
    else
        mv $($(1).gz_PATH)/manifest.common.json $($(1).gz_PATH)/manifest.json
    fi
endef