Bladefile

local sh = require('sh')

--<version> [name] [description] - cross compile and create release on Github
function target.release(version, name, description)
	assert(version, "fatal: no version specified")

	name = name or string.format("blade %s", version)
	description = description or string.format("blade %s", version)

	if not string.match(version, "^v%d[.]%d[.]%d$") then
		error("fatal: version must be on the form 'vX.X.X'")
	end

	exitCode, output = blade._exec('git status --porcelain')
	if output ~= "" then
		error("fatal: uncommited changes")
	end

	target.build()
	blade.sh('git tag ' .. version)
	blade.sh('git push --tags')

	blade.sh(string.format("github-release release --user otm --repo blade --tag %s --name '%s' --description '%s'", version, name, description))

	for file in io.popen("ls -1 blade_*"):lines() do
		code = blade.system(string.format("github-release upload --user otm --repo blade --tag %s --name %s --file %s", version, file, file))
		blade.printStatus(file, code)
	end
end

blade.compgen(target.release, function(compWords, compCWord)
	if compCWord == 1 then
		code, out = blade._sh("git tag")
		return out
	end
end)

--clean working directory of builds
function target.clean()
	blade.exec("rm blade blade_*")
end

--cross compile
function target.build()
	sh.go("generate")
	go("gox")
end

--download, install and setup gox for cross compile
function target.goxSetup()
	blade.sh("go get github.com/mitchellh/gox")
	blade.sh("go install github.com/mitchellh/gox")
	go("gox -build-toolchain", {sudo=true})
end

function go(cmd, options)
	code, gopath = blade.system("go env GOPATH")
	gopath = (gopath:gsub("^%s*(.-)%s*$", "%1"))
	cmd = gopath .. "/bin/" .. cmd
	if options and options.sudo then
		cmd = "sudo " .. cmd
	end

	return blade.sh(cmd)
end