# Compiler and flags
CC = gcc
CFLAGS = -Wall -O2

# Directories
SRC_DIR = src
BIN_DIR = bin

# Source and target names
TARGET = iptool
SRC = $(SRC_DIR)/$(TARGET).c
PRE = $(BIN_DIR)/$(TARGET).i
ASM = $(BIN_DIR)/$(TARGET).s
OBJ = $(BIN_DIR)/$(TARGET).o
BIN = $(BIN_DIR)/$(TARGET)

# Example argument for test
ARG = 

# Default: build executable
all: $(BIN)

# Ensure bin directory exists
$(BIN_DIR):
	mkdir -p $(BIN_DIR)

# Stage 1: Preprocess
$(PRE): $(SRC) | $(BIN_DIR)
	$(CC) -E $(CFLAGS) $< -o $@

# Stage 2: Compile to assembly
$(ASM): $(PRE)
	$(CC) -S $(CFLAGS) $< -o $@

# Stage 3: Assemble to object file
$(OBJ): $(ASM)
	$(CC) -c $(CFLAGS) $< -o $@

# Stage 4: Link object to executable
$(BIN): $(OBJ)
	$(CC) $(CFLAGS) $< -o $@

# Run tests
define run_test
	@name="$(1) $(2)"; \
	width=40; \
	printf "%s" "$$name"; \
	dots=$$((width - $${#name})); \
	for i in $$(seq 1 $$dots); do printf "."; done; \
	./$(BIN) $(2) >/dev/null 2>&1; \
	ec=$$?; \
	if [ $$ec -eq 0 ] || [ $$ec -eq 2 ]; then \
		echo " OK"; \
	else \
		echo " FAILED (exit $$ec)"; \
		exit 1; \
	fi
endef

test: $(BIN)
	$(call run_test,$(TARGET),no args)
	$(call run_test,$(TARGET),$(ARG))

# Clean all generated files
clean:
	rm -v -f $(BIN_DIR)/$(TARGET).* $(BIN)