fun validate()

in src/main/kotlin/jetbrains/buildServer/notification/slackNotifier/SlackNotifierDescriptor.kt [15:66]
45 lines of code
6 McCabe index (conditional complexity)

    fun validate(properties: Map<String, String>): MutableCollection<InvalidProperty> {
        val invalidProperties = mutableListOf<InvalidProperty>()

        val channel = properties[SlackProperties.channelProperty.key]
        if (channel.isNullOrEmpty()) {
            invalidProperties.add(
                InvalidProperty(
                    SlackProperties.channelProperty.key,
                    "Channel or user id must not be empty"
                )
            )
        }

        val connection = properties[SlackProperties.connectionProperty.key]
        if (connection.isNullOrEmpty()) {
            invalidProperties.add(
                    InvalidProperty(
                            SlackProperties.connectionProperty.key,
                            "Connection must be selected"
                    )
            )
        }

        properties[SlackProperties.maximumNumberOfChangesProperty.key]?.let { maximumNumberOfChanges ->
            if (maximumNumberOfChanges.isEmpty()) {
                return@let
            }

            val asInt = maximumNumberOfChanges.toIntOrNull()

            if (asInt == null) {
                invalidProperties.add(
                        InvalidProperty(
                                SlackProperties.maximumNumberOfChangesProperty.key,
                                "Maximum number of changes must be integer"
                        )
                )
                return@let
            }

            if (asInt < 0) {
                invalidProperties.add(
                        InvalidProperty(
                                SlackProperties.maximumNumberOfChangesProperty.key,
                                "Maximum number of changes must not be less than 0"
                        )
                )
            }
        }

        return invalidProperties
    }