# Compiler and flags
CXX = g++
CXXFLAGS = -Wall -Wextra -g -ggdb3 -std=c++14 -I./src -isystem./ext/raylib/src -I./ext/tomlc17/src
LDFLAGS = -L./ext/raylib/src -lraylib -lm -lpthread -ldl -lrt -lX11

# Directories
SRC_DIR = src
BUILD_DIR = build
RAYLIB_DIR = ext/raylib/src
TARGET = orbit_sim
TEST_DIR = tests
TEST_TARGET = orbit_test

# Source files
CPP_SOURCES = $(SRC_DIR)/main.cpp \
               $(SRC_DIR)/physics.cpp \
               $(SRC_DIR)/bodies.cpp \
               $(SRC_DIR)/config_loader.cpp \
               $(SRC_DIR)/renderer.cpp

C_SOURCES = $(SRC_DIR)/../ext/tomlc17/src/tomlc17.c

SOURCES = $(CPP_SOURCES) $(C_SOURCES)

# Object files
CPP_OBJECTS = $(CPP_SOURCES:$(SRC_DIR)/%.cpp=$(BUILD_DIR)/%.o)
C_OBJECTS = $(C_SOURCES:$(SRC_DIR)/%.c=$(BUILD_DIR)/%.o)
OBJECTS = $(CPP_OBJECTS) $(C_OBJECTS)

# Default target
all: raylib $(BUILD_DIR) $(TARGET)

# Build raylib
raylib:
	@if [ ! -f $(RAYLIB_DIR)/libraylib.a ]; then \
		echo "Building raylib..."; \
		cd $(RAYLIB_DIR) && $(MAKE) PLATFORM=PLATFORM_DESKTOP; \
	fi

# Create build directory
$(BUILD_DIR):
	mkdir -p $(BUILD_DIR)

# Link the executable
$(TARGET): $(OBJECTS) raylib
	$(CXX) $(OBJECTS) -o $(TARGET) $(LDFLAGS)

# Compile C++ source files
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.cpp
	$(CXX) $(CXXFLAGS) -c $< -o $@

# Compile C source files
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c
	$(CC) -Wall -Wextra -g -ggdb3 -std=c99 -I./src -I./ext/tomlc17/src -c $< -o $@

# Clean build files
clean:
	rm -rf $(BUILD_DIR) $(TARGET)

# Clean everything including raylib
clean-all: clean
	cd $(RAYLIB_DIR) && $(MAKE) clean

# Rebuild
rebuild: clean all

# Run the simulation
run: $(TARGET)
	./$(TARGET)


# Build automated test suite
test-build:
	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
		-c $(TEST_DIR)/test_main.cpp -o build/test_main.o
	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
		-c $(TEST_DIR)/test_integration.cpp -o build/test_integration.o
	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
		-c $(TEST_DIR)/test_energy.cpp -o build/test_energy.o
	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
		-c $(TEST_DIR)/test_orbital_period.cpp -o build/test_orbital_period.o
	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
		-c $(TEST_DIR)/test_comet_orbit.cpp -o build/test_comet_orbit.o
	$(CXX) $(CXXFLAGS) \
		-c $(SRC_DIR)/test_utilities.cpp -o build/test_utilities.o
	$(CXX) $(CXXFLAGS) \
		-c $(SRC_DIR)/physics.cpp -o build/test_physics.o
	$(CXX) $(CXXFLAGS) \
		-c $(SRC_DIR)/bodies.cpp -o build/test_bodies.o
	$(CXX) $(CXXFLAGS) \
		-c $(SRC_DIR)/config_loader.cpp -o build/test_config_loader.o
	$(CC) -Wall -Wextra -g -ggdb3 -std=c99 -I./src -I./ext/tomlc17/src \
		-c $(SRC_DIR)/../ext/tomlc17/src/tomlc17.c -o build/test_tomlc17.o
	$(CXX) build/test_main.o build/test_integration.o build/test_energy.o build/test_orbital_period.o build/test_comet_orbit.o build/test_utilities.o build/test_physics.o build/test_bodies.o build/test_config_loader.o build/test_tomlc17.o \
		-o $(TEST_TARGET) -lCatch2Main -lCatch2 -lm

# Run automated test suite
test: test-build
	./$(TEST_TARGET)

.PHONY: all clean clean-all rebuild run test test-build raylib