#############################################################
# Options
#

FSSOURCE ?= ../local/fs/
LUASOURCE ?= ../local/lua/
FLASHSIZE ?= 4mb 32mb 8mb
SUBDIRS = 
HOSTCC ?= gcc

OBJDUMP = $(or $(shell which objdump),xtensa-lx106-elf-objdump)

#############################################################
# Get the files to pack into the spiffs image
#

SPIFFSFILES ?= $(patsubst $(FSSOURCE)%,%,$(shell find $(FSSOURCE) -name '*' '!' -name .gitignore ))

#################################################################
# Get the filesize of /bin/0x10000.bin and SPIFFS sizing
#

FLASH_USED_END := $$((0x`$(OBJDUMP) -t ../app/.output/eagle/debug/image/eagle.app.v6.out |grep _flash_used_end |cut -f1 -d" "` - 0x40200000))
FLASH_FS_SIZE := $(shell $(HOSTCC) -E -dM - <../app/include/user_config.h | grep SPIFFS_MAX_FILESYSTEM_SIZE| cut -d ' ' -f 3)
FLASH_FS_LOC := $(shell $(HOSTCC) -E -dM - <../app/include/user_config.h | grep SPIFFS_FIXED_LOCATION| cut -d ' ' -f 3)

ifneq (FLASH_FS_SIZE,'')
FLASHSIZE = $(shell printf "0x%x" $(FLASH_FS_SIZE))
endif 

ifeq (FLASH_FS_LOC,'')
FLASH_FS_LOC := $(FLASH_USED_END)
else 
FLASH_FS_LOC := $(shell printf "0x%x" $(FLASH_FS_LOC))
endif 


#############################################################
# Rules base
#
#

all:	spiffsscript

.PHONY: spiffsimg

.PHONY: spiffsimg/spiffsimg

spiffsimg: spiffsimg/spiffsimg
	@echo Built spiffsimg in spiffsimg/spiffsimg

spiffsimg/spiffsimg: 
	@$(MAKE) -C spiffsimg CC=$(HOSTCC)

spiffsscript: remove-image LFSimage spiffsimg/spiffsimg
	rm -f ./spiffsimg/spiffs.lst
	@echo "" >> ./spiffsimg/spiffs.lst
	@$(foreach f, $(SPIFFSFILES), echo "import $(FSSOURCE)$(f) $(f)" >> ./spiffsimg/spiffs.lst ;)
	$(foreach sz, $(FLASHSIZE), spiffsimg/spiffsimg -f ../bin/0x%x-$(sz).img  -c $(sz) -U $(FLASH_FS_LOC) -r ./spiffsimg/spiffs.lst -d; )
	@$(foreach sz, $(FLASHSIZE), if [ -r ../bin/spiffs-$(sz).dat ]; then echo Built $$(cat ../bin/spiffs-$(sz).dat)-$(sz).bin; fi; )
	
LFSimage: $(LUASOURCE)*.lua
	../luac.cross -f -o $(FSSOURCE)flash.img $(LUASOURCE)*.lua

remove-image:
	$(foreach sz, $(FLASHSIZE), if [ -r ../bin/spiffs-$(sz).dat ]; then rm -f ../bin/$$(cat ../bin/spiffs-$(sz).dat)-$(sz).bin; fi; )
	rm -f ../bin/spiffs*.dat


spiffsclean: remove-image
	rm -f ./spiffsimg/spiffsimg
	rm -f ./spiffsimg/spiffs.lst