Firebase DocumentSnapshot conversion for Enum and Long fields

DocumentConversion.kt

inline fun <reified T : Any> DocumentSnapshot.toObjectWithConversion(): T? {
    val instance = T::class.primaryConstructor?.callBy(
        T::class.primaryConstructor!!.parameters.associateWith { parameter ->
            val value = this.get(parameter.name.orEmpty())
            when {
                parameter.type.classifier is KClass<*> && (parameter.type.classifier as KClass<*>).isSubclassOf(Enum::class) -> {
                    val enumClass = parameter.type.classifier as KClass<Enum<*>>
                    (value as? String)?.toEnumSafe(enumClass)
                }

                parameter.type.classifier == Int::class && value is Long -> value.toInt()

                else -> value
            }
        }
    )

    return instance
}

fun String?.toEnumSafe(enumClass: KClass<Enum<*>>): Enum<*>? {
    return enumClass.java.enumConstants?.firstOrNull { it.name.equals(this, ignoreCase = true) }
}