CLANG ?= clang
CFLAGS ?=
OS ?=

CFLAGS += -Os -g3 -Wall -Wextra -Wno-unused-parameter
ifneq ($(OS),Windows_NT) 
 # NOTE: clang on windows does not support fPIC
 CFLAGS += -fPIC
endif

INCLUDES += -Ibuild/

INSTALL ?= install
PREFIX ?= /usr/local
LIBDIR = $(PREFIX)/lib
INCLUDEDIR = $(PREFIX)/include

all: build/libllhttp.a build/libllhttp.so

clean:
 rm -rf release/
 rm -rf build/

build/libllhttp.so: build/c/llhttp.o build/native/api.o \
  build/native/http.o
 $(CLANG) -shared $^ -o $@

build/libllhttp.a: build/c/llhttp.o build/native/api.o \
  build/native/http.o
 $(AR) rcs $@ build/c/llhttp.o build/native/api.o build/native/http.o

build/c/llhttp.o: build/c/llhttp.c
 $(CLANG) $(CFLAGS) $(INCLUDES) -c $< -o $@

build/native/%.o: src/native/%.c build/llhttp.h src/native/api.h \
  build/native
 $(CLANG) $(CFLAGS) $(INCLUDES) -c $< -o $@

build/llhttp.h: generate
build/c/llhttp.c: generate

build/native:
 mkdir -p build/native

release: clean generate
 @echo "${RELEASE}" | grep -q -E ".+" || { echo "Please make sure the RELEASE argument is set."; exit 1; }
 rm -rf release
 mkdir -p release/src
 mkdir -p release/include
 cp -rf build/llhttp.h release/include/
 cp -rf build/c/llhttp.c release/src/
 cp -rf src/native/*.c release/src/
 cp -rf src/llhttp.gyp release/
 cp -rf src/common.gypi release/
 sed s/_RELEASE_/$(RELEASE)/ CMakeLists.txt > release/CMakeLists.txt
 cp -rf libllhttp.pc.in release/
 cp -rf README.md release/
 cp -rf LICENSE-MIT release/

github-release:
 @echo "${RELEASE_V}" | grep -q -E "^v" || { echo "Please make sure version starts with \"v\"."; exit 1; }
 gh release create -d --generate-notes ${RELEASE_V}
 @sleep 5
 gh release view ${RELEASE_V} -t "{{.body}}" --json body > RELEASE_NOTES
 gh release delete ${RELEASE_V} -y
 gh release create -F RELEASE_NOTES -d --title ${RELEASE_V} --target release release/${RELEASE_V}
 @sleep 5
 rm -rf RELEASE_NOTES
 open $$(gh release view release/${RELEASE_V} --json url -t "{{.url}}")

postversion: release 
 git fetch origin
 git push
 git checkout release --
 cp -rf release/* ./
 rm -rf release
 git add include src *.gyp *.gypi CMakeLists.txt README.md LICENSE-MIT libllhttp.pc.in
 git commit -a -m "release: $(RELEASE)"
 git tag "release/v$(RELEASE)"
 git push && git push --tags
 git checkout main

generate:
 npx ts-node bin/generate.ts

install: build/libllhttp.a build/libllhttp.so
 $(INSTALL) -d $(DESTDIR)$(INCLUDEDIR)
 $(INSTALL) -d $(DESTDIR)$(LIBDIR)
 $(INSTALL) -C build/llhttp.h $(DESTDIR)$(INCLUDEDIR)/llhttp.h
 $(INSTALL) -C build/libllhttp.a $(DESTDIR)$(LIBDIR)/libllhttp.a
 $(INSTALL) build/libllhttp.so $(DESTDIR)$(LIBDIR)/libllhttp.so

.PHONY: all generate clean release postversion github-release