CC       := gcc
CFLAGS   := -O3 -fPIC -Wall -Wextra
LDFLAGS  := -shared

SRCDIR   := engine/src
INCDIR   := engine/include
BUILDDIR := build
LIBNAME  := libchess

SRC := $(wildcard $(SRCDIR)/*.c)
OBJ := $(patsubst $(SRCDIR)/%.c,$(BUILDDIR)/%.o,$(SRC))
LIB := $(BUILDDIR)/$(LIBNAME).so

.PHONY: all clean test

all: $(LIB)

$(BUILDDIR):
	@mkdir -p $(BUILDDIR)

$(BUILDDIR)/%.o: $(SRCDIR)/%.c | $(BUILDDIR)
	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@

$(LIB): $(OBJ)
	$(CC) $(LDFLAGS) -o $@ $^

clean:
	@echo "Cleaning build and Python caches..."
	@rm -rf $(BUILDDIR)
	@find . -type d -name "__pycache__"    -exec rm -rf {} +
	@find . -type d -name ".pytest_cache"  -exec rm -rf {} +
	@find . -type f \( -name "*.pyc" -o -name "*.pyo" \) -delete

# Always rebuild, and always clean afterward (even if tests fail)
test:
	@$(MAKE) clean
	@$(MAKE) all
	@python3 -m unittest -v; \
	status=$$?; \
	$(MAKE) clean; \
	exit $$status