CC      ?= cc
CFLAGS  ?= -std=c99 -Wall -Wextra -O2
LDLIBS  := -lm

SRC_DIR       := src
THIRD_PARTY   := third_party/astronomy/astronomy.c
TEST_DIR      := tests
BUILD_DIR     := build
OBJ_DIR       := $(BUILD_DIR)/obj

# Final build output lives in dist/, next to (not inside) engine/ and res/.
DIST_DIR      := ../dist
DIST_IMG_DIR  := $(DIST_DIR)/img
DIST_I18N_DIR := $(DIST_DIR)/i18n
RES_IMG_DIR   := ../res/img
I18N_DIR      := i18n
SCRIPTS_DIR   := scripts

# Engine logic shared by the CLI and the test binary (no main()).
ENGINE_SRCS := $(SRC_DIR)/rng.c $(SRC_DIR)/tarot.c $(SRC_DIR)/tarot_data.c \
               $(SRC_DIR)/astro.c $(SRC_DIR)/reading.c $(SRC_DIR)/i18n.c $(THIRD_PARTY)
ENGINE_OBJS := $(patsubst %.c,$(OBJ_DIR)/%.o,$(ENGINE_SRCS))

MAIN_OBJ    := $(OBJ_DIR)/$(SRC_DIR)/main.o
TEST_OBJ    := $(OBJ_DIR)/$(TEST_DIR)/smoke_test.o

BINARY      := $(DIST_DIR)/deck-engine
TEST_BINARY := $(BUILD_DIR)/smoke_test

.PHONY: all test clean images scripts i18n

all: $(BINARY) images scripts i18n

$(BINARY): $(ENGINE_OBJS) $(MAIN_OBJ)
	@mkdir -p $(DIST_DIR)
	$(CC) $(CFLAGS) -o $@ $^ $(LDLIBS)

# The HTML report expects card art at img/<file> next to the binary, so
# every build refreshes a copy alongside it (cheap: 22 small JPEGs).
images:
	@mkdir -p $(DIST_IMG_DIR)
	cp $(RES_IMG_DIR)/*.jpeg $(DIST_IMG_DIR)/

# The CLI expects translation files at i18n/<lang>.lang next to the
# binary (default --i18n-dir), so every build refreshes a copy alongside
# it, same as images/. Add a new language by dropping another <code>.lang
# file into engine/i18n/ - no code or Makefile change needed.
i18n:
	@mkdir -p $(DIST_I18N_DIR)
	cp $(I18N_DIR)/*.lang $(DIST_I18N_DIR)/

# run.sh is refreshed every build. user.properties is only seeded once
# (from the placeholder template) so a rebuild never clobbers the user's
# own filled-in birth data.
scripts:
	@mkdir -p $(DIST_DIR)
	cp $(SCRIPTS_DIR)/run.sh $(DIST_DIR)/run.sh
	chmod +x $(DIST_DIR)/run.sh
	test -f $(DIST_DIR)/user.properties || \
		cp $(SCRIPTS_DIR)/user.properties.template $(DIST_DIR)/user.properties

test: $(TEST_BINARY)
	./$(TEST_BINARY)

$(TEST_BINARY): $(ENGINE_OBJS) $(TEST_OBJ)
	$(CC) $(CFLAGS) -o $@ $^ $(LDLIBS)

$(OBJ_DIR)/%.o: %.c
	@mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -c -o $@ $<

clean:
	rm -rf $(BUILD_DIR) $(BINARY) $(DIST_IMG_DIR) $(DIST_I18N_DIR) $(DIST_DIR)/run.sh
	# user.properties holds the user's own data - never removed by clean.