BINARY = gojekyll
PACKAGE = github.com/osteele/gojekyll

SOURCEDIR = .
SOURCES := $(shell find $(SOURCEDIR) -name '*.go')

COMMIT_HASH = `git rev-parse --short HEAD 2>/dev/null`
BUILD_DATE = `date +%FT%T%z`
VERSION := $(COMMIT_HASH)
OS := $(shell uname -o)

LDFLAGS=-ldflags "-X ${PACKAGE}/cmd.Version=${VERSION} -X ${PACKAGE}/cmd.BuildDate=${BUILD_DATE}"

.DEFAULT_GOAL: build
.PHONY: build clean deps setup install lint release test help

$(BINARY): $(SOURCES)
	go build ${LDFLAGS} -o ${BINARY} ${PACKAGE}

build: $(BINARY) ## compile the package

clean: ## remove binary files
	rm -f ${BINARY}

imports: ## list imports
	go list -f '{{join .Imports "\n"}}' ./... | grep -v `go list -f '{{.ImportPath}}'` | grep '\.' | sort | uniq

deps: ## list dependencies
	go list -f '{{join .Deps "\n"}}' ./... | grep -v `go list -f '{{.ImportPath}}'` | grep '\.' | sort | uniq

race: ## build a binary with race detection
	go build -race ${LDFLAGS} -o ${BINARY}-race ${PACKAGE}

release: build
	mkdir -p dist
	tar -cvzf dist/$(BINARY)_$(VERSION)_$(OS:GNU/%=%)_$(shell uname -m).tar.gz $(BINARY) LICENSE README.md

setup: ## install dependencies and development tools
	go get -t -u ./...
	go get github.com/alecthomas/gometalinter
	gometalinter --install

install: ## compile and install the executable
	go install ${LDFLAGS} ${PACKAGE}

lint: ## Run all the linters
	gometalinter ./... --tests --deadline=5m --disable=gotype --disable=aligncheck

test: ## test the package
	go test ./...

# Source: https://marmelab.com/blog/2016/02/29/auto-documented-makefile.html
help:
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'