# Detect OS
UNAME_S := $(shell uname -s)

CFLAGS_COMMON = -MMD -MP -Wall -Wextra -I./shared $(shell pkg-config --cflags raylib)

# Compiler
ifeq ($(UNAME_S),Darwin)
    CC = gcc-15
    CFLAGS = $(CFLAGS_COMMON) -pthread
    LDFLAGS = -pthread $(shell pkg-config --libs raylib)
else ifeq ($(UNAME_S),Linux)
    CC = gcc
    CFLAGS = $(CFLAGS_COMMON) -pthread
    LDFLAGS = -pthread $(shell pkg-config --libs raylib)
else
    # Windows (MSYS2 MinGW)
    CC = gcc
    CFLAGS = $(CFLAGS_COMMON)
    LDFLAGS = -lws2_32 $(shell pkg-config --libs raylib)
endif

SHARED_BUILD = build/shared
SHARED_SRC = $(shell find shared -name "*.c")
SHARED_OBJ = $(SHARED_SRC:shared/%.c=$(SHARED_BUILD)/%.o)

# Directories
SERVER_BUILD = build/server
SERVER_TARGET = bin/server
SERVER_SRC = $(shell find server -name "*.c")
SERVER_OBJ = $(SERVER_SRC:server/%.c=$(SERVER_BUILD)/%.o)

CLIENT_BUILD = build/client
CLIENT_TARGET = bin/client
CLIENT_SRC = $(shell find client -name "*.c")
CLIENT_OBJ = $(CLIENT_SRC:client/%.c=$(CLIENT_BUILD)/%.o)

# Raylib via pkg-config (works on macOS, Linux, MSYS2)
CLIENT_CFLAGS  = $(CFLAGS)
CLIENT_LDFLAGS = $(LDFLAGS)

# Windows needs extra libs sometimes
ifeq ($(OS),Windows_NT)
    CLIENT_LDFLAGS += -lopengl32 -lgdi32 -lwinmm
endif

# Dependency files
-include $(wildcard $(SHARED_BUILD)/*.d)
-include $(wildcard $(SERVER_BUILD)/*.d)
-include $(wildcard $(CLIENT_BUILD)/*.d)

.PHONY: all clean server client

all: $(SERVER_TARGET) $(CLIENT_TARGET)

server: $(SERVER_TARGET)
client: $(CLIENT_TARGET)

# Create bin directory
bin:
	mkdir -p bin

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

# Link targets
$(SERVER_TARGET): $(SERVER_OBJ) $(SHARED_OBJ) | bin
	$(CC) $(SERVER_OBJ) $(SHARED_OBJ) -o $(SERVER_TARGET) $(LDFLAGS)

$(CLIENT_TARGET): $(CLIENT_OBJ) $(SHARED_OBJ) | bin
	$(CC) $(CLIENT_OBJ) $(SHARED_OBJ) -o $(CLIENT_TARGET) $(CLIENT_LDFLAGS)

# Compile rules
$(SERVER_BUILD)/%.o: server/%.c
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -c $< -o $@

$(CLIENT_BUILD)/%.o: client/%.c
	mkdir -p $(dir $@)
	$(CC) $(CLIENT_CFLAGS) -c $< -o $@

# Clean
clean:
	rm -rf build bin