# Destination folder for the downloaded libraries
LIBS_DIR := $(abspath ./libs)

UNAME_S := $(shell uname -s)

# Flags for CGO to find the headers and the shared library
ifeq ($(UNAME_S),Darwin)
	CGO_CFLAGS  := -I$(LIBS_DIR)
	CGO_LDFLAGS := -L$(LIBS_DIR) -lcodex -Wl,-rpath,@executable_path/libs
else
	CGO_CFLAGS  := -I$(LIBS_DIR)
	CGO_LDFLAGS := -L$(LIBS_DIR) -lcodex -Wl,-rpath,$(LIBS_DIR)
endif

ifeq ($(OS),Windows_NT)
  BIN_NAME := example.exe
else
  BIN_NAME := example
endif

# Configuration for fetching the right binary
OS ?= "linux"
ARCH ?= "amd64"
VERSION ?= "v0.0.17"
LATEST_URL := "https://github.com/codex-storage/codex-go-bindings/releases/latest/download/codex-${OS}-${ARCH}.zip"
VERSIONED_URL := "https://github.com/codex-storage/codex-go-bindings/releases/download/$(VERSION)/codex-${OS}-${ARCH}.zip"

all: run

fetch: 
	@echo "Fetching libcodex from GitHub Actions: ${LATEST_URL}"
	@curl -fSL --create-dirs -o $(LIBS_DIR)/codex-${OS}-${ARCH}.zip ${LATEST_URL}
	unzip -o -qq $(LIBS_DIR)/codex-${OS}-${ARCH}.zip -d $(LIBS_DIR)
	rm -f $(LIBS_DIR)/*.zip

build:
	@echo "CGO_CFLAGS=$(CGO_CFLAGS)"
	@echo "CGO_LDFLAGS=$(CGO_LDFLAGS)"
	ls -l $(LIBS_DIR)
	go env CGO_LDFLAGS
	CGO_ENABLED=1 CGO_CFLAGS="$(CGO_CFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" go build -o $(BIN_NAME) main.go
run:
ifeq ($(OS),Windows_NT)
	pwsh -Command "Copy-Item libs\libcodex.dll ."
	pwsh -Command ".\$(BIN_NAME)"
else ifeq ($(UNAME_S),Darwin)
	otool -L libs/libcodex.dylib
    DYLD_LIBRARY_PATH=$(LIBS_DIR) ./$(BIN_NAME)
else
	./$(BIN_NAME)
endif

clean:
	rm -f $(BIN_NAME)
	rm -Rf $(LIBS_DIR)/*