mkfile_dir := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))

ifeq ($(VERBOSE),)

ifeq ($(QUIET),)
$(info Building in quiet mode. For a lot more informatiion, add 'VERBOSE=1' to the beginning of your call to $(MAKE))
export QUIET = @
endif

export ARDUINO_VERBOSE ?=
else
export ARDUINO_VERBOSE ?= --verbose
endif



# Build path config
TMPDIR ?= /tmp

export KALEIDOSCOPE_DIR ?= $(abspath $(mkfile_dir)/../..)
KALEIDOSCOPE_BIN_DIR ?= $(KALEIDOSCOPE_DIR)/bin
KALEIDOSCOPE_ETC_DIR ?= $(KALEIDOSCOPE_DIR)/etc

KALEIDOSCOPE_TEMP_PATH ?= $(TMPDIR)/kaleidoscope-$(USER)
KALEIDOSCOPE_BUILD_PATH ?= $(KALEIDOSCOPE_TEMP_PATH)/build
KALEIDOSCOPE_OUTPUT_PATH ?= $(KALEIDOSCOPE_TEMP_PATH)/output

CORE_CACHE_PATH ?= $(KALEIDOSCOPE_TEMP_PATH)/arduino-cores


ARDUINO_CONTENT ?= $(KALEIDOSCOPE_DIR)/.arduino
export ARDUINO_DIRECTORIES_DATA ?= $(ARDUINO_CONTENT)/data
export ARDUINO_DIRECTORIES_DOWNLOADS ?= $(ARDUINO_CONTENT)/downloads
export ARDUINO_CLI_CONFIG ?= $(ARDUINO_DIRECTORIES_DATA)/arduino-cli.yaml
export ARDUINO_BOARD_MANAGER_ADDITIONAL_URLS ?= https://raw.githubusercontent.com/keyboardio/boardsmanager/master/package_keyboardio_index.json

# If it looks like Kaleidoscope is inside a "traditional" Arduino hardware directory 
# in the user's homedir, let's use that.

ifeq ($(shell uname -s),Darwin)
traditional_path = $(HOME)/Documents/Arduino/
else
traditional_path = $(HOME)/Arduino/
endif

# use realpath to compare the real absolute path of the kaleidoscope dir
# and the arduino bundle, even if they're symlinked into the Arudino/hardware dir
ifeq ($(realpath $(traditional_path)/hardware/keyboardio/avr/libraries/Kaleidoscope), $(realpath $(KALEIDOSCOPE_DIR))) 
export ARDUINO_DIRECTORIES_USER ?= $(traditional_path)
endif
# Otherwise, use the arduino-cli bundle
export ARDUINO_DIRECTORIES_USER ?= $(ARDUINO_CONTENT)/user

# If we're not calling setup, we should freak out if the hardware
# definitions don't exist

ifneq ($(MAKECMDGOALS),setup)

ifeq ($(wildcard $(ARDUINO_DIRECTORIES_USER)/hardware/keyboardio/avr/boards.txt),)
 
$(info Kaleidoscope hardware definitions not found in)
$(info $(ARDUINO_DIRECTORIES_USER))
$(info )
$(info You may be able to resolve this issue by running the following command)
$(info to initialize Kaleidoscope )
$(info )
$(info $(MAKE) -C $(KALEIDOSCOPE_DIR) setup )
$(info )
$(error )

endif

endif



system_arduino_cli=$(shell command -v arduino-cli || true)

arduino_env = ARDUINO_DIRECTORIES_USER=$(ARDUINO_DIRECTORIES_USER) \
	      ARDUINO_DIRECTORIES_DATA=$(ARDUINO_DIRECTORIES_DATA)

ifeq ($(system_arduino_cli),) 
export ARDUINO_CLI_PATH ?= $(KALEIDOSCOPE_BIN_DIR)/arduino-cli
else
export ARDUINO_CLI_PATH ?= $(system_arduino_cli)
endif


export ARDUINO_CLI ?= $(arduino_env) $(ARDUINO_CLI_PATH)

ifneq ($(VERBOSE),) 
$(info Using ardino-cli from $(ARDUINO_CLI_PATH))
endif

ifneq ($(FQBN),)
fqbn_arg = --fqbn $(FQBN)
endif

# if we don't have a sketch, make a pretend one so we can run --show properties
# This is because arduino-cli doesn't currently allow us to get props with
# just an FQBN. We've filed a bug with them
ifeq ($(SKETCH_FILE_PATH),) 
_arduino_props_sketch_arg	=	$(KALEIDOSCOPE_ETC_DIR)/dummy-sketch/
else
_arduino_props_sketch_arg	=	$(SKETCH_FILE_PATH)
endif

# This is horrible. But because make doesn't really support
# multi-line variables and we want to cache the full
# _arduino_props in a variable, which means letting make 
# split the properties on space, which is what it converts
# newlines into. To make this go, we we need to replace interior
# spaces in the variables with something. We chose the fire 
# emoji, since it accurately represents our feelings on this 
# state of affairs. Later, when finding props, we need to reverse 
# this process, turning fire into space.
_arduino_props := $(shell ${ARDUINO_CLI}  compile $(fqbn_arg) --show-properties "$(_arduino_props_sketch_arg)"|perl -p -e"s/ /🔥/g")

_arduino_prop = $(subst $1=,,$(subst 🔥, ,$(filter $1=%,$(_arduino_props))))

# How to use_arduino_prop
# $(call _arduino_prop,recipe.hooks.sketch.prebuild.2.pattern)

ifneq ($(KALEIDOSCOPE_CCACHE),) 
ccache_wrapper_property := --build-properties "compiler.wrapper.cmd=ccache"
endif

.PHONY: configure-arduino-cli install-arduino-core-kaleidoscope install-arduino-core-avr
.PHONY: stupid-workaround-for-make-inclusion-semantics

stupid-workaround-for-make-inclusion-semantics: DEFAULT_GOAL
	@: # This is here so that the sketch makefile including this file doesn't
	@: # default to arduino-cli installation as its priamry target

$(KALEIDOSCOPE_BIN_DIR)/arduino-cli:
	$(QUIET) curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | BINDIR="$(KALEIDOSCOPE_BIN_DIR)" sh

install-arduino-cli: $(KALEIDOSCOPE_BIN_DIR)/arduino-cli

configure-arduino-cli:
	$(QUIET) $(ARDUINO_CLI) config init

install-arduino-core-kaleidoscope:
	$(QUIET) $(ARDUINO_CLI) core install "keyboardio:avr"

install-arduino-core-avr: 
	$(QUIET) $(ARDUINO_CLI) core install "arduino:avr"