MDLOADER_VERSION := 1.0.7
QMK_FIRMWARE_COMMIT := af9c4d93ee

EXECUTION_DATE := $(shell date +%FT%T%Z)
TARGET_LAYOUTS := $(wildcard layout/*)

BUILD_TARGET_LAYOUTS := $(addsuffix .bin, $(addprefix builds/, $(notdir $(TARGET_LAYOUTS))))

WRITE_TARGET?=undefined-target

UNAME_S := $(shell uname -s)

.DEFAULT_GOAL := help

.PHONY: help
help:
	@printf "\033[33mUsage:\033[0m\n  make [target] [arg=\"val\"...]\n\n\033[33mTargets:\033[0m\n"
	@grep -E '^[-a-zA-Z0-9_\.\/]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[32m%-15s\033[0m %s\n", $$1, $$2}'

.PHONY: update
update: qmk_firmware ## Update qmk_firmware
	@git -C qmk_firmware fetch
	@git -C qmk_firmware checkout $(QMK_FIRMWARE_COMMIT)
	@git -C qmk_firmware submodule update --init --recursive
	$(MAKE) qmk_firmware/patches_applied

.PHONY: write
write: mdloader builds/$(WRITE_TARGET).bin ## Write a layout to the keyboard, pass WRITE_TARGET as variable to control the particular layout
	@./mdloader --first --download builds/$(WRITE_TARGET).bin --restart

### Internal targets

qmk_firmware/.git/HEAD: qmk_firmware

qmk_firmware:
	@git clone https://github.com/Massdrop/qmk_firmware.git qmk_firmware
	@git -C qmk_firmware checkout $(QMK_FIRMWARE_COMMIT)
	@git -C qmk_firmware submodule update --init --recursive
	$(MAKE) qmk_firmware/patches_applied

qmk_firmware/patches_applied: qmk_patches.diff qmk_firmware/.git/HEAD
	@git -C qmk_firmware clean -dffx 2>/dev/null || true
	@git -C qmk_firmware reset --hard HEAD
	@git -C qmk_firmware apply ../qmk_patches.diff
	@touch qmk_firmware/patches_applied

mdloader.zip:
ifeq ($(UNAME_S),Linux)
	@curl -Ls -o mdloader.zip https://github.com/Massdrop/mdloader/releases/download/$(MDLOADER_VERSION)/mdloader-Linux.zip
endif
ifeq ($(UNAME_S),Darwin)
	@curl -Ls -o mdloader.zip https://github.com/Massdrop/mdloader/releases/download/$(MDLOADER_VERSION)/mdloader-macOS.zip
endif

mdloader: mdloader.zip
	@unzip mdloader.zip
	@[ -e mdloader ] && touch mdloader

builds/%.bin: qmk_firmware/.git/HEAD qmk_firmware/patches_applied layout/%/* | qmk_firmware
	@docker run -it --rm -v $$(pwd)/qmk_firmware:/qmk_firmware -v $$(pwd)/layout:/qmk_firmware/keyboards/massdrop/shift/keymaps -w /qmk_firmware qmkfm/base_container:latest ./bin/qmk compile --keyboard massdrop/shift --keymap $(@:builds/%.bin=%)
	@mv qmk_firmware/massdrop_shift_$(@:builds/%.bin=%).bin $@