NAME=ginput
BUILD_DIR=build

CC=gcc
VALAC=valac
VALA_FLAGS=--pkg libadwaita-1 --gresources ui/ginput.gresource.xml
CFLAGS=$(shell pkg-config --cflags gtk4 libadwaita-1 libusb-1.0 glib-2.0) -O3 -Wall -I src -I $(BUILD_DIR)/vala
LDFLAGS=$(shell pkg-config --libs gtk4 libadwaita-1 libusb-1.0 glib-2.0) -lm

UI := $(shell find ui/ -name '*.ui')
C_FILES := $(shell find src/ -name '*.c')
VALA_FILES := $(shell find src/ -name '*.vala')
VAPI_FILES := $(shell find src/ -name '*.vapi')
VALA_OBJECTS := $(VALA_FILES)
VALA_OBJECTS := $(patsubst %.vala,%.c,$(VALA_OBJECTS))
VALA_OBJECTS := $(VALA_OBJECTS:%=$(BUILD_DIR)/vala/%)

all: resources $(BUILD_DIR)/$(NAME) $(BUILD_DIR)/drivers

# Top-level targets
resources: $(BUILD_DIR)/glib-2.0/schemas/gschemas.compiled

$(VALA_OBJECTS): $(VALA_FILES) $(VAPI_FILES) | $(BUILD_DIR)/vala
	rm -rf $(BUILD_DIR)/vala
	$(VALAC) -d $(BUILD_DIR)/vala $(VALA_FLAGS) --header=$(BUILD_DIR)/vala/vala.h -C $^ $(VALA_PKG)

$(BUILD_DIR)/$(NAME): $(BUILD_DIR)/resource.c $(C_FILES) $(VALA_OBJECTS) | $(BUILD_DIR)
	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)

# Build directory
$(BUILD_DIR):
	mkdir -p $(BUILD_DIR)

$(BUILD_DIR)/vala: | $(BUILD_DIR)
	mkdir -p $(BUILD_DIR)/vala

# Resources
$(BUILD_DIR)/resource.c: ui/ginput.gresource.xml ui/style.css $(UI)
	cp ui/style.css $(BUILD_DIR)/
	cd ui && glib-compile-resources --generate-source --target=resource.c ginput.gresource.xml
	mv ui/resource.c $(BUILD_DIR)/

$(BUILD_DIR)/glib-2.0/schemas/gschemas.compiled: v.ginput.gschema.xml | $(BUILD_DIR)
	mkdir -p $(BUILD_DIR)/glib-2.0/schemas
	glib-compile-schemas . --targetdir=$(BUILD_DIR)/glib-2.0/schemas

# Drivers
.PHONY: $(BUILD_DIR)/drivers
$(BUILD_DIR)/drivers:
	cd drivers && make

# Phony targets
.PHONY: clean
clean:
	rm -rf $(BUILD_DIR)

.PHONY: run
.SILENT: run
run: all
	XDG_DATA_DIRS=./$(BUILD_DIR) ./$(BUILD_DIR)/$(NAME)

$(BUILD_DIR)/$(NAME).dbg: $(BUILD_DIR)/resource.c $(C_FILES) $(VALA_OBJECTS) | $(BUILD_DIR)
	$(CC) $(CFLAGS) -g -o $@ $^ $(LDFLAGS)

debug: $(BUILD_DIR)/$(NAME).dbg $(BUILD_DIR)/drivers resources
	XDG_DATA_DIRS=./$(BUILD_DIR) gdb --args ./$(BUILD_DIR)/$(NAME).dbg