CC       ?= gcc
CXX      ?= c++
CFLAGS   ?= -Wall -Wextra -Wno-format-truncation -O2 -std=c11
CXXFLAGS ?= -Wall -Wextra -O2 -std=c++17
LDFLAGS  ?=
PREFIX   ?= /usr
DESTDIR  ?=

# json-c via pkg-config
JSON_C_CFLAGS := $(shell pkg-config --cflags json-c)
JSON_C_LIBS   := $(shell pkg-config --libs json-c)

# Wayland + EGL + GLESv2 + FreeType
WL_CFLAGS := $(shell pkg-config --cflags wayland-client wayland-egl egl glesv2 freetype2)
WL_LIBS   := $(shell pkg-config --libs wayland-client wayland-egl egl glesv2 freetype2) -lrt -lm

# Wayfire plugin helper for compositor cursor control
WF_CFLAGS     := $(shell pkg-config --cflags wayfire wf-utils)
WF_LIBS       := $(shell pkg-config --libs wayfire wf-utils)
WF_PLUGINDIR  := $(shell pkg-config --variable=plugindir wayfire)
WF_METADATADIR := $(shell pkg-config --variable=metadatadir wayfire)

# Protocol XML sources
WLR_LAYER_SHELL_XML ?= wlr-layer-shell-unstable-v1.xml
XDG_OUTPUT_XML      ?= $(shell pkg-config --variable=pkgdatadir wayland-protocols)/unstable/xdg-output/xdg-output-unstable-v1.xml
XDG_SHELL_XML       ?= $(shell pkg-config --variable=pkgdatadir wayland-protocols)/stable/xdg-shell/xdg-shell.xml
EXT_IDLE_NOTIFY_XML ?= $(shell pkg-config --variable=pkgdatadir wayland-protocols)/staging/ext-idle-notify/ext-idle-notify-v1.xml

# Generated protocol files
PROTO_HEADERS := wlr-layer-shell-unstable-v1-client-protocol.h \
                 xdg-output-unstable-v1-client-protocol.h \
                 xdg-shell-client-protocol.h \
                 ext-idle-notify-v1-client-protocol.h
PROTO_SOURCES := wlr-layer-shell-unstable-v1-protocol.c \
                 xdg-output-unstable-v1-protocol.c \
                 xdg-shell-protocol.c \
                 ext-idle-notify-v1-protocol.c

.PHONY: all clean install install-conf

IDLE_PLUGIN := $(if $(wildcard oledsaver-idle.cpp),liboledsaver-idle.so)
SAMPLER_PLUGIN := $(if $(wildcard oledsaver-sampler.cpp),liboledsaver-sampler.so)

all: oledsaver liboledsaver-cursor.so $(IDLE_PLUGIN) $(SAMPLER_PLUGIN)

# ── Protocol generation ──────────────────────────────────────────────

wlr-layer-shell-unstable-v1-client-protocol.h: $(WLR_LAYER_SHELL_XML)
	wayland-scanner client-header $< $@

wlr-layer-shell-unstable-v1-protocol.c: $(WLR_LAYER_SHELL_XML)
	wayland-scanner private-code $< $@

xdg-output-unstable-v1-client-protocol.h: $(XDG_OUTPUT_XML)
	wayland-scanner client-header $< $@

xdg-output-unstable-v1-protocol.c: $(XDG_OUTPUT_XML)
	wayland-scanner private-code $< $@

xdg-shell-client-protocol.h: $(XDG_SHELL_XML)
	wayland-scanner client-header $< $@

xdg-shell-protocol.c: $(XDG_SHELL_XML)
	wayland-scanner private-code $< $@

ext-idle-notify-v1-client-protocol.h: $(EXT_IDLE_NOTIFY_XML)
	wayland-scanner client-header $< $@

ext-idle-notify-v1-protocol.c: $(EXT_IDLE_NOTIFY_XML)
	wayland-scanner private-code $< $@

# ── oledsaver (combined manager + renderer) ──────────────────────────

oledsaver: oledsaver.c $(PROTO_SOURCES) $(PROTO_HEADERS)
	$(CC) $(CFLAGS) $(JSON_C_CFLAGS) $(WL_CFLAGS) -o $@ oledsaver.c $(PROTO_SOURCES) $(LDFLAGS) $(JSON_C_LIBS) $(WL_LIBS) -lpthread

liboledsaver-cursor.so: oledsaver-cursor.cpp
	$(CXX) $(CXXFLAGS) -fPIC -shared -DWAYFIRE_PLUGIN -DWLR_USE_UNSTABLE $(WF_CFLAGS) -o $@ $< $(LDFLAGS) $(WF_LIBS)

liboledsaver-idle.so: oledsaver-idle.cpp
	$(CXX) $(CXXFLAGS) -fPIC -shared -DWAYFIRE_PLUGIN -DWLR_USE_UNSTABLE $(WF_CFLAGS) -o $@ $< $(LDFLAGS) $(WF_LIBS)

liboledsaver-sampler.so: oledsaver-sampler.cpp
	$(CXX) $(CXXFLAGS) -fPIC -shared -DWAYFIRE_PLUGIN -DWLR_USE_UNSTABLE $(WF_CFLAGS) -o $@ $< $(LDFLAGS) $(WF_LIBS)

# ── Install / Clean ─────────────────────────────────────────────────

install: oledsaver liboledsaver-cursor.so $(IDLE_PLUGIN) $(SAMPLER_PLUGIN)
	install -Dm755 oledsaver $(DESTDIR)$(PREFIX)/bin/oledsaver
	install -Dm755 liboledsaver-cursor.so $(DESTDIR)$(WF_PLUGINDIR)/liboledsaver-cursor.so
	install -Dm644 oledsaver-cursor.xml $(DESTDIR)$(WF_METADATADIR)/oledsaver-cursor.xml

ifneq ($(IDLE_PLUGIN),)
	install -Dm755 liboledsaver-idle.so $(DESTDIR)$(WF_PLUGINDIR)/liboledsaver-idle.so
	install -Dm644 oledsaver-idle.xml $(DESTDIR)$(WF_METADATADIR)/oledsaver-idle.xml
endif

ifneq ($(SAMPLER_PLUGIN),)
	install -Dm755 liboledsaver-sampler.so $(DESTDIR)$(WF_PLUGINDIR)/liboledsaver-sampler.so
	install -Dm644 oledsaver-sampler.xml $(DESTDIR)$(WF_METADATADIR)/oledsaver-sampler.xml
endif

install-conf:
	install -Dm644 oledsaver.conf.default $(DESTDIR)/etc/oledsaver.conf

clean:
	rm -f oledsaver liboledsaver-cursor.so liboledsaver-idle.so liboledsaver-sampler.so $(PROTO_HEADERS) $(PROTO_SOURCES)