ToolsProperties2.kt

const val PROPERTY_SLACK_TOKEN = "slack.token"

data class ToolsProperties(
    val slackToken: String,
) {
    companion object {
        fun parseProperties(propertiesFileName: String): ToolsProperties {
            val properties = Properties()
            val stream = FileInputStream(propertiesFileName)
            properties.load(stream)
            stream.close()

            return parseProperties(properties)
        }

        fun parseProperties(properties: Properties): ToolsProperties {
            val slackToken = properties.getProperty(PROPERTY_SLACK_TOKEN, null)
                ?: throw MissingPropertyException("Property $PROPERTY_SLACK_TOKEN is missing")

            return ToolsProperties(slackToken)
        }
    }
}