tagOs()
tagJdk()
tagIde()
tagCiOrLocal()
addGitMetadata()

void tagOs() {
	gradleEnterprise.buildScan.tag System.getProperty("os.name")
}

void tagJdk() {
	gradleEnterprise.buildScan.tag "JDK-" + System.getProperty('java.specification.version')
}

void tagIde() {
	if (System.getProperty("idea.version")) {
		gradleEnterprise.buildScan.tag "IntelliJ IDEA"
	} else if (System.getProperty("eclipse.buildId")) {
		gradleEnterprise.buildScan.tag "Eclipse"
	}
}

void tagCiOrLocal() {
	gradleEnterprise.buildScan.tag(isCi() ? "CI" : "LOCAL")
}

void addGitMetadata() {
	gradleEnterprise.buildScan.background {
		def gitCommitId = execAndGetStdout("git", "rev-parse", "--short=8", "--verify", "HEAD")
		def gitBranchName = getBranch()
		def gitStatus = execAndGetStdout("git", "status", "--porcelain")

		if(gitCommitId) {
			def commitIdLabel = "Git Commit ID"
			value commitIdLabel, gitCommitId
			link "Git commit build scans", customValueSearchUrl([(commitIdLabel): gitCommitId])
		}
		if (gitBranchName) {
			tag gitBranchName
			value "Git branch", gitBranchName
		}
		if (gitStatus) {
			tag "dirty"
			value "Git status", gitStatus
		}
	}
}

boolean isCi() {
	System.getenv("CI")
}

String getBranch() {
	def branch = System.getenv("BRANCH")
	if (branch) {
		return branch
	}
	return execAndGetStdout("git", "rev-parse", "--abbrev-ref", "HEAD")
}

String execAndGetStdout(String... args) {
	def stdout = new ByteArrayOutputStream()
	exec {
		commandLine(args)
		standardOutput = stdout
	}
	return stdout.toString().trim()
}

String customValueSearchUrl(Map<String, String> search) {
	def query = search.collect { name, value ->
		"search.names=${encodeURL(name)}&search.values=${encodeURL(value)}"
	}.join("&")

	"${gradleEnterprise.buildScan.server}/scans?${query}"
}

String encodeURL(String url) {
	URLEncoder.encode(url, "UTF-8")
}