NIMC ?= nim c
OBJDIR ?= .obj
OUTDIR ?= target
# These paths are quoted in recipes.
PREFIX ?= /usr/local
MANPREFIX ?= $(PREFIX)/share/man
MANPREFIX1 ?= $(MANPREFIX)/man1
MANPREFIX5 ?= $(MANPREFIX)/man5
TARGET ?= release
# This must be single-quoted, because it is not a real shell substitution.
# The default setting is at {the binary's path}/../libexec/chawan.
# You may override it with any path if your system does not have a libexec
# directory, but make sure to surround it with quotes if it contains spaces.
# (This way, the cha binary can be directly executed without installation.)
LIBEXECDIR ?= '$${%CHA_BIN_DIR}/../libexec/chawan'
# If overridden, take libexecdir that was specified.
# Otherwise, just install to libexec/chawan.
ifeq ($(LIBEXECDIR),'$${%CHA_BIN_DIR}/../libexec/chawan')
LIBEXECDIR_CHAWAN = "$(DESTDIR)$(PREFIX)/libexec/chawan"
else
LIBEXECDIR_CHAWAN = $(LIBEXECDIR)/chawan
endif

# These paths are quoted in recipes.
OUTDIR_TARGET = $(OUTDIR)/$(TARGET)
OUTDIR_BIN = $(OUTDIR_TARGET)/bin
OUTDIR_LIBEXEC = $(OUTDIR_TARGET)/libexec/chawan
OUTDIR_CGI_BIN = $(OUTDIR_LIBEXEC)/cgi-bin

# Nim compiler flags
ifeq ($(TARGET),debug)
FLAGS += -d:debug --debugger:native
else ifeq ($(TARGET),release)
FLAGS += -d:release -d:strip -d:lto
else ifeq ($(TARGET),release0)
FLAGS += -d:release --stacktrace:on
else ifeq ($(TARGET),release1)
FLAGS += -d:release --debugger:native
endif

FLAGS += --nimcache:"$(OBJDIR)/$(TARGET)"

.PHONY: all
all: $(OUTDIR_BIN)/cha $(OUTDIR_LIBEXEC)/gopher2html $(OUTDIR_CGI_BIN)/gmifetch $(OUTDIR_LIBEXEC)/gmi2html $(OUTDIR_CGI_BIN)/cha-finger $(OUTDIR_CGI_BIN)/about $(OUTDIR_CGI_BIN)/data

$(OUTDIR_BIN)/cha: lib/libquickjs.a src/*.nim src/**/*.nim res/* res/**/*
	@mkdir -p "$(OUTDIR)/$(TARGET)/bin"
	$(NIMC) -d:curlLibName:$(CURLLIBNAME) -d:libexecPath=$(LIBEXECDIR) \
		$(FLAGS) -o:"$(OUTDIR_BIN)/cha" src/main.nim
	ln -sf "$(OUTDIR)/$(TARGET)/bin/cha" cha

$(OUTDIR_LIBEXEC)/gopher2html: adapter/gopher/gopher2html.nim
	$(NIMC) $(FLAGS) -o:"$(OUTDIR_LIBEXEC)/gopher2html" \
		adapter/gopher/gopher2html.nim

GMIFETCH_CFLAGS = -Wall -Wextra -std=c89 -pedantic -lcrypto -lssl -g -O3
$(OUTDIR_CGI_BIN)/gmifetch: adapter/gemini/gmifetch.c
	$(CC) $(GMIFETCH_CFLAGS) adapter/gemini/gmifetch.c -o "$(OUTDIR_CGI_BIN)/gmifetch"

GMI2HTML_CFLAGS = -Wall -Wextra -std=c89 -pedantic -g -O3
$(OUTDIR_LIBEXEC)/gmi2html: adapter/gemini/gmi2html.c
	$(CC) $(GMI2HTML_CFLAGS) adapter/gemini/gmi2html.c -o "$(OUTDIR_LIBEXEC)/gmi2html"

$(OUTDIR_CGI_BIN)/cha-finger: adapter/finger/cha-finger
	@mkdir -p $(OUTDIR_CGI_BIN)
	cp adapter/finger/cha-finger $(OUTDIR_CGI_BIN)

$(OUTDIR_CGI_BIN)/about: adapter/about/about.nim
	$(NIMC) $(FLAGS) -o:"$(OUTDIR_CGI_BIN)/about" adapter/about/about.nim

$(OUTDIR_CGI_BIN)/data: adapter/data/data.nim
	$(NIMC) $(FLAGS) -o:"$(OUTDIR_CGI_BIN)/data" adapter/data/data.nim

CFLAGS = -g -Wall -O2 -DCONFIG_VERSION=\"$(shell cat lib/quickjs/VERSION)\"
QJSOBJ = $(OBJDIR)/quickjs

# Dependencies
$(QJSOBJ)/cutils.o: lib/quickjs/cutils.h
$(QJSOBJ)/libbf.o: lib/quickjs/cutils.h lib/quickjs/libbf.h
$(QJSOBJ)/libregexp.o: lib/quickjs/cutils.h lib/quickjs/libregexp.h \
	lib/quickjs/libunicode.h lib/quickjs/libregexp-opcode.h
$(QJSOBJ)/libunicode.o: lib/quickjs/cutils.h lib/quickjs/libunicode.h \
	lib/quickjs/libunicode-table.h
$(QJSOBJ)/quickjs.o: lib/quickjs/cutils.h lib/quickjs/list.h \
	lib/quickjs/quickjs.h lib/quickjs/libregexp.h \
	lib/quickjs/libunicode.h lib/quickjs/libbf.h \
	lib/quickjs/quickjs-atom.h lib/quickjs/quickjs-opcode.h

$(QJSOBJ)/%.o: lib/quickjs/%.c
	@mkdir -p "$(QJSOBJ)"
	$(CC) $(CFLAGS) -c -o $@ $<

lib/libquickjs.a: $(QJSOBJ)/quickjs.o $(QJSOBJ)/libregexp.o \
		$(QJSOBJ)/libunicode.o $(QJSOBJ)/cutils.o \
		$(QJSOBJ)/libbf.o
	@mkdir -p "$(QJSOBJ)"
	$(AR) rcs $@ $^

$(OBJDIR)/man/cha-%.md: doc/%.md
	@mkdir -p "$(OBJDIR)/man"
	./md2manpreproc $< > $@

$(OBJDIR)/man/cha-%.5: $(OBJDIR)/man/cha-%.md
	pandoc --standalone --to man $< -o $@

$(OBJDIR)/man/cha.1: doc/cha.1
	@mkdir -p "$(OBJDIR)/man"
	cp doc/cha.1 "$(OBJDIR)/man/cha.1"

.PHONY: clean
clean:
	rm -rf "$(OBJDIR)/$(TARGET)"
	rm -rf "$(QJSOBJ)"
	rm -f lib/libquickjs.a

.PHONY: manpage
manpage: $(OBJDIR)/man/cha-config.5 $(OBJDIR)/man/cha-mailcap.5 \
	$(OBJDIR)/man/cha-mime.types.5 $(OBJDIR)/man/cha-localcgi.5 \
	$(OBJDIR)/man/cha-urimethodmap.5 \
	$(OBJDIR)/man/cha.1

.PHONY: install
install:
	mkdir -p "$(DESTDIR)$(PREFIX)/bin"
	install -m755 "$(OUTDIR_BIN)/cha" "$(DESTDIR)$(PREFIX)/bin"
	@# intentionally not quoted
	mkdir -p $(LIBEXECDIR_CHAWAN)/cgi-bin
	install -m755 "$(OUTDIR_LIBEXEC)/gopher2html" $(LIBEXECDIR_CHAWAN)
	install -m755 "$(OUTDIR_LIBEXEC)/gmi2html" $(LIBEXECDIR_CHAWAN)
	install -m755 "$(OUTDIR_CGI_BIN)/gmifetch" $(LIBEXECDIR_CHAWAN)/cgi-bin
	install -m755 "$(OUTDIR_CGI_BIN)/cha-finger" $(LIBEXECDIR_CHAWAN)/cgi-bin
	if test -d "$(OBJDIR)/man"; then \
	mkdir -p "$(DESTDIR)$(MANPREFIX5)"; \
	mkdir -p "$(DESTDIR)$(MANPREFIX1)"; \
	install -m644 "$(OBJDIR)/man/cha-config.5" "$(DESTDIR)$(MANPREFIX5)"; \
	install -m644 "$(OBJDIR)/man/cha-mailcap.5" "$(DESTDIR)$(MANPREFIX5)"; \
	install -m644 "$(OBJDIR)/man/cha-mime.types.5" "$(DESTDIR)$(MANPREFIX5)"; \
	install -m644 "$(OBJDIR)/man/cha-localcgi.5" "$(DESTDIR)$(MANPREFIX5)"; \
	install -m644 "$(OBJDIR)/man/cha-urimethodmap.5" "$(DESTDIR)$(MANPREFIX5)"; \
	install -m644 "$(OBJDIR)/man/cha.1" "$(DESTDIR)$(MANPREFIX1)"; \
	fi

.PHONY: uninstall
uninstall:
	rm -f "$(DESTDIR)$(PREFIX)/bin/cha"
	@# intentionally not quoted
	rm -f $(LIBEXECDIR_CHAWAN)/gopher2html
	rm -f $(LIBEXECDIR_CHAWAN)/gmi2html
	rm -f $(LIBEXECDIR_CHAWAN)/cgi-bin/about
	rm -f $(LIBEXECDIR_CHAWAN)/cgi-bin/data
	rm -f $(LIBEXECDIR_CHAWAN)/cgi-bin/gmifetch
	rm -f $(LIBEXECDIR_CHAWAN)/cgi-bin/cha-finger
	rmdir $(LIBEXECDIR_CHAWAN)/cgi-bin && rmdir $(LIBEXECDIR_CHAWAN) || true
	rm -f "$(DESTDIR)$(MANPREFIX5)/cha-config.5"
	rm -f "$(DESTDIR)$(MANPREFIX5)/cha-mailcap.5"
	rm -f "$(DESTDIR)$(MANPREFIX5)/cha-mime.types.5"
	rm -f "$(DESTDIR)$(MANPREFIX5)/cha-localcgi.5"
	rm -f "$(DESTDIR)$(MANPREFIX5)/cha-urimethodmap.5"
	rm -f "$(DESTDIR)$(MANPREFIX1)/cha.1"

.PHONY: submodule
submodule:
	git submodule update --init