# Compiler and flags
CXX = g++
CXXFLAGS = -Wall -Wextra -g -gddb3 -std=c++14 -I./src -isystem./ext/raylib/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
SOURCES = $(SRC_DIR)/main.cpp \
          $(SRC_DIR)/physics.cpp \
          $(SRC_DIR)/bodies.cpp \
          $(SRC_DIR)/config_loader.cpp \
          $(SRC_DIR)/renderer.cpp

# Object files
OBJECTS = $(SOURCES:$(SRC_DIR)/%.cpp=$(BUILD_DIR)/%.o)

# 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 source files
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.cpp
	$(CXX) $(CXXFLAGS) -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)

# Run manual integration test with simulation
test-manual: $(TARGET)
	./$(TARGET) configs/test_simple.txt --headless --readable --days 365

# Build automated test suite
test-build:
	$(CXX) $(CXXFLAGS) -I/usr/include/catch2 \
		$(TEST_DIR)/test_main.cpp \
		$(TEST_DIR)/test_integration.cpp \
		$(TEST_DIR)/test_energy.cpp \
		$(TEST_DIR)/test_orbital_period.cpp \
		$(TEST_DIR)/test_comet_orbit.cpp \
		$(SRC_DIR)/test_utilities.cpp \
		$(SRC_DIR)/physics.cpp \
		$(SRC_DIR)/bodies.cpp \
		-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 test-manual raylib