define Build/Prepare
endef

define Build/Configure
endef

define Build/Compile
endef

include $(INCLUDE_DIR)/target.mk

# derive custo variables from packagename
# CONFIG_CUSTO-* / CONFIG_CUSTO_MAPPINGS-*
PKG_CUSTO_CONFIG_VAR?=$(patsubst mappings-%,CONFIG_CUSTO_MAPPINGS-%,$(patsubst conf-%,CONFIG_CUSTO-%,$(patsubst webui-%,CONFIG_CUSTO_WEBUI-%,$(patsubst cli-%,CONFIG_CUSTO_CLI-%,$(patsubst mib-%,CONFIG_CUSTO_MIB-%,$(PKG_NAME))))))
# debug
$(warning PKG_CUSTO_CONFIG_VAR = $(PKG_CUSTO_CONFIG_VAR))

ifeq ($(strip $(PKG_CUSTO_CONFIG_VAR)),$(strip $(PKG_NAME)))
  $(error PKG_CUSTO_CONFIG_VAR not explicitly set or PKG_NAME is not of the form conf-*, mappings-*, webui-*, cli-* or mib-*)
endif

ifeq ($($(PKG_CUSTO_CONFIG_VAR)),)
  #only check when actually building
  ifneq ($(strip $(BUILDNAME)),)
    $(error $(PKG_CUSTO_CONFIG_VAR) not set. Run repowrt menuconfig to correct)
  endif
endif

# if CONFIG_CUSTO-* / CONFIG_CUSTO_MAPPINGS-* is empty, replace by generic
ifneq ($($(PKG_CUSTO_CONFIG_VAR)),"")
  PKG_CUSTO_CONFIG_VALUE=$(patsubst "%",%,$($(PKG_CUSTO_CONFIG_VAR)))
else
  PKG_CUSTO_CONFIG_VALUE=generic
endif

# ensure PKG_CUSTO_FILE_PREFIXES is not empty
ifeq ($(strip $(PKG_CUSTO_FILE_PREFIXES)),)
  $(error PKG_CUSTO_FILE_PREFIXES not set)
endif

# ensure the CONFIG_CUSTO-* / CONFIG_CUSTO_MAPPINGS-* value is taken into account in the
# decision to rebuild
STAMP_PREPARED:=$(STAMP_PREPARED)_$(patsubst "%",%,$(PKG_CUSTO_CONFIG_VALUE))
# debug
$(warning STAMP_PREPARED = $(STAMP_PREPARED))

# create config section
# CUSTO- (for config)
PKG_CUSTO_VAR?=$(patsubst conf-%,CUSTO-%,$(patsubst mappings-%,CUSTO_MAPPINGS-%,$(patsubst webui-%,CUSTO_WEBUI-%,$(patsubst cli-%,CUSTO_CLI-%,$(patsubst mib-%,CUSTO_MIB-%,$(PKG_NAME))))))
#debug
$(warning PKG_CUSTO_VAR = $(PKG_CUSTO_VAR))

ifeq ($(strip $(PKG_CUSTO_VAR)),$(strip $(PKG_NAME)))
  $(error PKG_CUSTO_VAR not explicitly set or PKG_NAME is not of the form conf-*, mappings-*, webui-*, cli-* or mib-*)
endif

define create_config
  define Package/$(1)/config
    config $(2)
    depends on PACKAGE_$(1)
    string "Name of the custo to use."
    default "generic"
    $$(Package/$(1)/additionalconfig)
  endef
endef

$(eval $(call create_config,$(PKG_NAME),$(PKG_CUSTO_VAR)))

# create list of CUSTO sources
# $1 = PREFIX, $2 = PKG_CUSTO_CONFIG_VALUE , $3 = BOARDNAME
define find_custos
  $(1)_CUSTOS_$(3):=$(shell find -L . -regex './files/$(shell echo "$(3)" | tr '[:upper:]' '[:lower:]')/$(1)-$(2)' 2> /dev/null)
  $(1)_CUSTOS_$(3)+=$(shell find -L . -regex './files/common/$(1)-$(2)' 2> /dev/null)
  $(1)_CUSTOS_$(3)+=$(shell find -L . -regex './files/$(shell echo "$(3)" | tr '[:upper:]' '[:lower:]')/$(1)-generic' 2> /dev/null)
  $(1)_CUSTOS_$(3)+=$(shell find -L . -regex './files/common/$(1)-generic' 2> /dev/null)
endef

#select first available CUSTO source from list
define select_custo
  $(1)_CUSTO_SELECTED_$(2):=$(firstword $($(1)_CUSTOS_$(2)))
endef

# if $(1)_CUSTO_SELECTED is a symlink to .remove, clear $(1)_CUSTO_SELECTED
define remove_custo
  $(1)_CUSTO_SELECTED_$(2):=$(if $($(1)_CUSTO_SELECTED_$(2)),$(if $(findstring .remove,$(shell readlink -f $($(1)_CUSTO_SELECTED_$(2)) 2> /dev/null)),,$($(1)_CUSTO_SELECTED_$(2))))
endef

define select_global_custo
  $(1)_CUSTO_SELECTED:=$($(1)_CUSTO_SELECTED_$(2))
endef

# get current board family members, TARGET_FAMILY_MEMBERS looks like VDNT-O:PT VDNT-3:PA ..., strip the :xx to get VDNT-O VDNT-3
FAMILY_MEMBERS:=$(if $(firstword $(TARGET_FAMILY_MEMBERS)),$(foreach MEMBER,$(TARGET_FAMILY_MEMBERS),$(shell echo "$(MEMBER)" | cut -d ':' -f 1)),$(BOARDNAME))
# identify all possible "board" custo names
POSSIBLE_CUSTO_NAMES:=$(sort $(FAMILY_MEMBERS) $(BOARDNAME))
# find custo files for each member of the board family
$(foreach CUSTO_NAME,$(POSSIBLE_CUSTO_NAMES),$(foreach PREFIX,$(PKG_CUSTO_FILE_PREFIXES),$(eval $(call find_custos,$(PREFIX),$(PKG_CUSTO_CONFIG_VALUE),$(CUSTO_NAME)))))
# select correct custo from the retieved custo files for each member of the board family
$(foreach CUSTO_NAME,$(POSSIBLE_CUSTO_NAMES),$(foreach PREFIX,$(PKG_CUSTO_FILE_PREFIXES),$(eval $(call select_custo,$(PREFIX),$(CUSTO_NAME)))))
# handle .remove for the selected custo for each member of the board family
$(foreach CUSTO_NAME,$(POSSIBLE_CUSTO_NAMES),$(foreach PREFIX,$(PKG_CUSTO_FILE_PREFIXES),$(eval $(call remove_custo,$(PREFIX),$(CUSTO_NAME)))))
# select the custo applicable for the current BOARDNAME (for backwards compatibility)
$(foreach PREFIX,$(PKG_CUSTO_FILE_PREFIXES),$(eval $(call select_global_custo,$(PREFIX),$(BOARDNAME))))

# family installation
# $(1) dst root path $(2) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_DIR
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(INSTALL_DIR) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(2)));),$(INSTALL_DIR) $(1)/$(patsubst /%,%,$(2));)
endef

# family installation
# $(1) dst root path $(2) = PREFIX $(3) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_DATA
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(INSTALL_DATA) $($(2)_CUSTO_SELECTED_$(MEMBER)) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(3)));),$(INSTALL_DATA) $($(2)_CUSTO_SELECTED) $(1)/$(patsubst /%,%,$(3));)
endef

# family installation
# $(1) dst root path $(2) = PREFIX $(3) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_BIN
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(INSTALL_BIN) $($(2)_CUSTO_SELECTED_$(MEMBER)) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(3)));),$(INSTALL_BIN) $($(2)_CUSTO_SELECTED) $(1)/$(patsubst /%,%,$(3));)
endef

# family installation, only proceed if source file exists
# $(1) dst root path $(2) = PREFIX $(3) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_DATA_IF_EXISTS
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(if $($(2)_CUSTO_SELECTED_$(MEMBER)),$(INSTALL_DATA) $($(2)_CUSTO_SELECTED_$(MEMBER)) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(3)));)),$(INSTALL_DATA) $($(2)_CUSTO_SELECTED) $(1)/$(patsubst /%,%,$(3));)
endef

# family installation, only proceed if source file exists
# $(1) dst root path $(2) = PREFIX $(3) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_BIN_IF_EXISTS
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(if $($(2)_CUSTO_SELECTED_$(MEMBER)),$(INSTALL_BIN) $($(2)_CUSTO_SELECTED_$(MEMBER)) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(3)));)),$(if $($(2)_CUSTO_SELECTED),$(INSTALL_BIN) $($(2)_CUSTO_SELECTED) $(1)/$(patsubst /%,%,$(3));))
endef

# conditional family installation, only install the dir if the file pointed to by CHECK_PREFIX contains the specified regexp 
# $(1) dst root path $(2) = CHECK_PREFIX $(3) regexp  $(4) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_DIR_CONDITIONAL
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(if $(firstword $(shell grep "$(3)" "$($(2)_CUSTO_SELECTED_$(MEMBER))" 2> /dev/null)),$(INSTALL_DIR) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(4)));)),$(if $(firstword $(shell grep "$(3)" "$($(2)_CUSTO_SELECTED)" 2> /dev/null)),$(INSTALL_DIR) $(1)/$(patsubst /%,%,$(4));))
endef

# conditional family installation, only install the file referenced by INSTALL_PREFIX if the file pointed to by CHECK_PREFIX contains the specified regexp and file pointed to by INSTALL_PREFIX exists
# $(1) dst root path $(2) = CHECK_PREFIX $(3) regexp  $(4) INSTALL_PREFIX $(5) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_DATA_CONDITIONAL
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(if $(firstword $(shell grep "$(3)" "$($(2)_CUSTO_SELECTED_$(MEMBER))" 2> /dev/null)),$(if $($(4)_CUSTO_SELECTED_$(MEMBER)),$(INSTALL_DATA) $($(4)_CUSTO_SELECTED_$(MEMBER)) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(5)));))),$(if $(firstword $(shell grep "$(3)" "$($(2)_CUSTO_SELECTED)" 2> /dev/null)),$(if $($(4)_CUSTO_SELECTED),$(INSTALL_DATA) $($(4)_CUSTO_SELECTED) $(1)/$(patsubst /%,%,$(5));)))
endef

# conditional family installation, only install the file referenced by INSTALL_PREFIX if the file pointed to by CHECK_PREFIX contains the specified regexp and file pointed to by INSTALL_PREFIX exists
# $(1) dst root path $(2) = CHECK_PREFIX $(3) regexp  $(4) INSTALL_PREFIX $(5) = dst subdir
# if destination is /etc/custo/... then change to /etc/... if there is more than one family member
define FAMILY_INSTALL_BIN_CONDITIONAL
$(if $(filter-out $(BOARDNAME),$(FAMILY_MEMBERS)),$(foreach MEMBER,$(FAMILY_MEMBERS),$(if $(firstword $(shell grep "$(3)" "$($(2)_CUSTO_SELECTED_$(MEMBER))" 2> /dev/null)),$(if $($(4)_CUSTO_SELECTED_$(MEMBER)),$(INSTALL_BIN) $($(4)_CUSTO_SELECTED_$(MEMBER)) $(1)/etc/boards/$(MEMBER)/config/$(patsubst /%,%,$(patsubst /etc/custo/%,/etc/%,$(5)));))),$(if $(firstword $(shell grep "$(3)" "$($(2)_CUSTO_SELECTED)" 2> /dev/null)),$(if $($(4)_CUSTO_SELECTED),$(INSTALL_BIN) $($(4)_CUSTO_SELECTED) $(1)/$(patsubst /%,%,$(5));)))
endef

# reporting
define report_custo_per_board
$(shell echo "$(PKG_NAME): $(1)_CUSTOS_$(2) = $($(1)_CUSTOS_$(2)) $(1)_CUSTO_SELECTED_$(2) = $($(1)_CUSTO_SELECTED_$(2))" >> $(TMP_DIR)/.custo_$(PKG_NAME))
endef

define report_custo_global
$(shell echo "$(PKG_NAME): BOARDNAME = $(BOARDNAME) $(1)_CUSTO_SELECTED = $($(1)_CUSTO_SELECTED)" >> $(TMP_DIR)/.custo_$(PKG_NAME))
endef

# remove existing report
$(shell rm -f $(TMP_DIR)/.custo_$(PKG_NAME))

# generate new report
$(foreach MEMBER,$(FAMILY_MEMBERS),$(foreach PREFIX,$(PKG_CUSTO_FILE_PREFIXES),$(eval $(call report_custo_per_board,$(PREFIX),$(MEMBER)))))
$(foreach PREFIX,$(PKG_CUSTO_FILE_PREFIXES),$(eval $(call report_custo_global,$(PREFIX))))