Discover Spring REST Docs API Enum Designs

internal interface SecurityRequirementsExtractor {
    fun extractSecurityRequirements(operation: Operation): SecurityRequirements?
}

internal class BasicSecurityHandler : SecurityRequirementsExtractor {
    override fun extractSecurityRequirements(operation: Operation): SecurityRequirements? {
        return if (isBasicSecurity(operation)) {
            Basic
        } else null
    }

    private fun isBasicSecurity(operation: Operation): Boolean {
        return operation.request.headers
            .filterKeys { it == HttpHeaders.AUTHORIZATION }
            .flatMap { it.value }
            .filter { it.startsWith("Basic ") }
            .isNotEmpty()
    }
}

internal interface SecurityRequirements {
    val type: SecurityType
}

internal data class Oauth2(val requiredScopes: List<String>) :
    SecurityRequirements {
    override val type = SecurityType.OAUTH2
}

internal object Basic : SecurityRequirements {
    override val type = SecurityType.BASIC
}

internal object JWTBearer : SecurityRequirements {
    override val type = SecurityType.JWT_BEARER
}

internal enum class SecurityType {
    OAUTH2,
    BASIC,
    API_KEY,
    JWT_BEARER
}