ToolsProperties.kt

const val PROPERTY_SLACK_TOKEN = "slack.token"

data class ToolsProperties(
    val slackToken: String,
)

internal fun parseProperties(propertiesFileName: String): ToolsProperties? {
    val properties = Properties()
    val stream = FileInputStream(propertiesFileName)
    properties.load(stream)
    stream.close()

    val slackToken = properties.getProperty(PROPERTY_SLACK_TOKEN, null)
    if (slackToken == null) {
        println("Property $PROPERTY_SLACK_TOKEN is missing")
        return null
    }

    return ToolsProperties(slackToken)
}