# slosh for Windows — cross-compiled with zig from a mac or a Linux box.
#
# `compat/win` comes first on the include path: it holds stub <poll.h>,
# <sys/socket.h> and friends that redirect to include/compat_win.h, so the
# existing sources keep their POSIX includes and call sites unchanged.
#
#   make -f Makefile.windows              # ARCH=aarch64, the default
#   make -f Makefile.windows ARCH=x86_64
#
ZIG      ?= zig
ARCH     ?= aarch64
TARGET   := $(ARCH)-windows-gnu
CC       := $(ZIG) cc -target $(TARGET)

VT       := vendor/libghostty-vt
VT_OUT   := $(VT)/zig-out-win-$(ARCH)
VT_LIB   := $(VT_OUT)/lib/ghostty-vt-static.lib
VT_INC   := $(VT_OUT)/include
VT_VERSION := $(shell sed -n 's/^[[:space:]]*\.version = "\([^"]*\)".*/\1/p' $(VT)/build.zig.zon | head -1)

OUT      := build/win-$(ARCH)
VERSION  := $(shell contrib/version 2>/dev/null || cat VERSION)

DIST     ?= dist
STEM     := slosh-$(VERSION)-windows-$(ARCH)
# The zip carries the same licensing paperwork as the linux tarballs
# (libghostty-vt and stb_image are linked in -- see THIRD-PARTY-LICENSES).
# The manpages are useless on Windows, so docs/windows.md rides along instead.
REL_DOCS := README.md LICENSE THIRD-PARTY-LICENSES docs/windows.md

CFLAGS   := -std=c23 -O1 -g -Wall -Wextra -Wno-unused-parameter -MMD -MP \
            -Icompat/win -I$(VT_INC) -Iinclude -I$(OUT) \
            -DGHOSTTY_STATIC \
            -include compat_win.h
LDFLAGS  := -lws2_32 -lshlwapi -lkernel32 -luser32 -ladvapi32 -lole32

SRC      := $(wildcard src/*.c)
OBJ      := $(SRC:src/%.c=$(OUT)/%.o)
DEPS     := $(OBJ:.o=.d)
BIN      := $(OUT)/slosh.exe

V ?= 0
ifeq ($(V),0)
  Q   := @
  say  = @printf '  %-5s %s\n' '$(1)' '$(2)'
else
  Q   :=
  say  = @:
endif

.PHONY: all dist clean vendor-win FORCE
.DEFAULT_GOAL := all

all: $(BIN)

$(BIN): $(OBJ) $(VT_LIB)
	$(call say,[LD],$@)
	$(Q)$(CC) $(OBJ) $(VT_LIB) -o $@ $(LDFLAGS)

$(OUT)/%.o: src/%.c $(OUT)/version.h $(OUT)/logo.h $(VT_LIB) | $(OUT)
	$(call say,[CC],$<)
	$(Q)$(CC) $(CFLAGS) -c $< -o $@

$(OUT)/png.o: src/png.c $(OUT)/version.h $(VT_LIB) | $(OUT)
	$(call say,[CC],$<)
	$(Q)$(CC) $(CFLAGS) -I$(VT)/src/stb -Wno-unused-function -c $< -o $@

# The shim itself calls the real socket API, so it is built with the
# redirections switched off. Everything else sees the POSIX names.
$(OUT)/compat_win.o: src/compat_win.c $(OUT)/version.h | $(OUT)
	$(call say,[CC],$<)
	$(Q)$(CC) $(CFLAGS) -DSL_COMPAT_IMPL -c $< -o $@

$(OUT)/pty_win.o: src/pty_win.c $(OUT)/version.h $(VT_LIB) | $(OUT)
	$(call say,[CC],$<)
	$(Q)$(CC) $(CFLAGS) -DSL_COMPAT_IMPL -c $< -o $@

$(OUT):
	@mkdir -p $(OUT)

# FORCE, not an order-only prerequisite: the value comes from git rather than
# from a file, so nothing on disk changes when it goes stale. Written only when
# it actually differs, so `make` after a commit rebuilds and `make` twice in a
# row does not.
$(OUT)/version.h: FORCE | $(OUT)
	@printf '/* generated by Makefile.windows */\n#define SLOSH_VERSION "%s"\n' \
	  '$(VERSION)' > $@.tmp
	@cmp -s $@.tmp $@ || mv $@.tmp $@
	@rm -f $@.tmp

$(OUT)/logo.h: logo.txt | $(OUT)
	$(Q){ printf '/* generated from logo.txt */\n'; \
	  printf 'static const char *const LOGO[] = {\n'; \
	  sed -e 's/\\\\/\\\\\\\\/g' -e 's/"/\\\\"/g' -e 's/^/    "/' -e 's/$$/",/' logo.txt; \
	  printf '};\n'; } > $@

# The release artifact: the binary plus the paperwork, as a zip, because a
# tarball is the wrong shape on the machine that will open it.
dist: $(BIN)
	@mkdir -p $(DIST)
	@rm -rf "$(DIST)/$(STEM)" "$(DIST)/$(STEM).zip"
	@mkdir -p "$(DIST)/$(STEM)"
	@cp "$(BIN)" "$(DIST)/$(STEM)/slosh.exe"
	@cp $(REL_DOCS) "$(DIST)/$(STEM)/"
	@(cd $(DIST) && zip -qr "$(STEM).zip" "$(STEM)")
	@rm -rf "$(DIST)/$(STEM)"
	$(call say,[ZIP],$(DIST)/$(STEM).zip)

$(VT_LIB): vendor-win

vendor-win:
	cd $(VT) && $(ZIG) build -Demit-lib-vt -Demit-xcframework=false \
	  -Dversion-string=$(VT_VERSION) -Doptimize=ReleaseFast \
	  -Dtarget=$(TARGET) -p zig-out-win-$(ARCH)

clean:
	rm -rf $(OUT)

-include $(DEPS)