bin_PROGRAMS = utun

# Sources that are always compiled
utun_CORE_SOURCES = \
	utun.c \
	utun_instance.c \
	config_parser.c \
	config_updater.c \
	route_lib.c \
	route_bgp.c \
	routing.c \
	tun_if.c \
	tun_route.c \
	tun_linux.c \
	tun_freebsd.c \
	tun_windows.c \
	etcp.c \
	etcp_connections.c \
	etcp_loadbalancer.c \
	etcp_debug.c \
	secure_channel.c \
	crc32.c \
	pkt_normalizer.c \
	packet_dump.c \
	etcp_api.c \
	control_server.c \
	firewall.c

# Platform-specific TUN libs (Windows only)
utun_TUN_LIBS = @TUN_LIBS@

# TinyCrypt sources (only used without OpenSSL)
utun_TINYCRYPT_SOURCES = \
	$(top_srcdir)/tinycrypt/lib/source/aes_encrypt.c \
	$(top_srcdir)/tinycrypt/lib/source/aes_decrypt.c \
	$(top_srcdir)/tinycrypt/lib/source/cbc_mode.c \
	$(top_srcdir)/tinycrypt/lib/source/ccm_mode.c \
	$(top_srcdir)/tinycrypt/lib/source/cmac_mode.c \
	$(top_srcdir)/tinycrypt/lib/source/ctr_mode.c \
	$(top_srcdir)/tinycrypt/lib/source/ecc.c \
	$(top_srcdir)/tinycrypt/lib/source/ecc_dh.c \
	$(top_srcdir)/tinycrypt/lib/source/ecc_dsa.c \
	$(top_srcdir)/tinycrypt/lib/source/ecc_platform_specific.c \
	$(top_srcdir)/tinycrypt/lib/source/hmac.c \
	$(top_srcdir)/tinycrypt/lib/source/sha256.c \
	$(top_srcdir)/tinycrypt/lib/source/utils.c

# Combine sources based on OpenSSL usage
if USE_OPENSSL
utun_SOURCES = $(utun_CORE_SOURCES) $(utun_TUN_SOURCES)
else
utun_SOURCES = $(utun_CORE_SOURCES) $(utun_TINYCRYPT_SOURCES) $(utun_TUN_SOURCES)
endif

# Include paths
utun_CORE_CFLAGS = \
	-I$(top_srcdir)/lib \
	-I$(top_srcdir)/tinycrypt/lib/include \
	-I$(top_srcdir)/tinycrypt/lib/source \
	-g \
	$(DEBUG_FLAGS)

utun_CFLAGS = $(utun_CORE_CFLAGS)

# Libraries
utun_CORE_LDADD = \
	$(top_builddir)/lib/libuasync.a \
	-lpthread \
	-lm

if USE_OPENSSL
utun_LDADD = $(utun_CORE_LDADD) -lcrypto $(utun_TUN_LIBS)
else
utun_LDADD = $(utun_CORE_LDADD) $(utun_TUN_LIBS)
endif

# TinyCrypt object files (for tests that need them)
TINYCRYPT_SRCDIR = $(top_srcdir)/tinycrypt/lib/source

TINYCRYPT_OBJS = \
	utun-aes_encrypt.o \
	utun-aes_decrypt.o \
	utun-ccm_mode.o \
	utun-cmac_mode.o \
	utun-ctr_mode.o \
	utun-ecc.o \
	utun-ecc_dh.o \
	utun-ecc_dsa.o \
	utun-sha256.o \
	utun-ecc_platform_specific.o \
	utun-utils.o

# Rules to build TinyCrypt objects (for tests)
TINYCRYPT_CFLAGS = -g -I$(top_srcdir)/tinycrypt/lib/include -I$(top_srcdir)/tinycrypt/lib/source

utun-aes_encrypt.o: $(TINYCRYPT_SRCDIR)/aes_encrypt.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-aes_decrypt.o: $(TINYCRYPT_SRCDIR)/aes_decrypt.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-ccm_mode.o: $(TINYCRYPT_SRCDIR)/ccm_mode.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-cmac_mode.o: $(TINYCRYPT_SRCDIR)/cmac_mode.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-ctr_mode.o: $(TINYCRYPT_SRCDIR)/ctr_mode.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-ecc.o: $(TINYCRYPT_SRCDIR)/ecc.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-ecc_dh.o: $(TINYCRYPT_SRCDIR)/ecc_dh.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-ecc_dsa.o: $(TINYCRYPT_SRCDIR)/ecc_dsa.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

utun-sha256.o: $(TINYCRYPT_SRCDIR)/sha256.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

# Force rebuild of ecc_platform_specific.o to pick up platform changes
utun-ecc_platform_specific.o: $(TINYCRYPT_SRCDIR)/ecc_platform_specific.c FORCE
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

FORCE:

utun-utils.o: $(TINYCRYPT_SRCDIR)/utils.c
	$(AM_V_CC)$(COMPILE) $(TINYCRYPT_CFLAGS) -c -o $@ $<

# Build TinyCrypt objects for tests (convenience target)
tinycrypt-objects: $(TINYCRYPT_OBJS)

# Copy binary to project root after building
all-local: copy-to-root

copy-to-root: utun$(EXEEXT)
	@cp -f utun$(EXEEXT) $(top_srcdir)/
	@cp -f $(top_srcdir)/lib/wintun.dll $(top_srcdir)/ 2>/dev/null || echo "Warning: wintun.dll not found in lib/"
if OS_WINDOWS
	@cp -f $(srcdir)/utun.manifest $(top_srcdir)/utun.exe.manifest 2>/dev/null || true
endif

# Clean
clean-local:
	@true

# Install directories
install-exec-hook:
	$(MKDIR_P) $(DESTDIR)$(bindir)
	$(MKDIR_P) $(DESTDIR)$(sysconfdir)/utun