use super::*;

// AccessUserObject (type 35)
// ---------------------------------------------------------------------------

/// BACnet Access User object (type 35).
///
/// Represents a person or entity that uses credentials to gain access.
/// Present value indicates the user type (AccessUserType enumeration).
pub struct AccessUserObject {
    oid: ObjectIdentifier,
    name: String,
    description: String,
    present_value: u32, // AccessUserType enumeration
    user_type: u32,
    credentials: Vec<ObjectIdentifier>,
    assigned_access_rights_count: u32,
    status_flags: StatusFlags,
    out_of_service: bool,
    reliability: u32,
}

impl AccessUserObject {
    /// Create a new Access User object.
    pub fn new(instance: u32, name: impl Into<String>) -> Result<Self, Error> {
        let oid = ObjectIdentifier::new(ObjectType::ACCESS_USER, instance)?;
        Ok(Self {
            oid,
            name: name.into(),
            description: String::new(),
            present_value: 0,
            user_type: 0,
            credentials: Vec::new(),
            assigned_access_rights_count: 0,
            status_flags: StatusFlags::empty(),
            out_of_service: false,
            reliability: 0,
        })
    }
}

impl BACnetObject for AccessUserObject {
    fn object_identifier(&self) -> ObjectIdentifier {
        self.oid
    }

    fn object_name(&self) -> &str {
        &self.name
    }

    fn read_property(
        &self,
        property: PropertyIdentifier,
        array_index: Option<u32>,
    ) -> Result<PropertyValue, Error> {
        if let Some(result) = read_common_properties!(self, property, array_index) {
            return result;
        }
        match property {
            p if p == PropertyIdentifier::OBJECT_TYPE => {
                Ok(PropertyValue::Enumerated(ObjectType::ACCESS_USER.to_raw()))
            }
            p if p == PropertyIdentifier::PRESENT_VALUE => {
                Ok(PropertyValue::Enumerated(self.present_value))
            }
            p if p == PropertyIdentifier::USER_TYPE => {
                Ok(PropertyValue::Enumerated(self.user_type))
            }
            p if p == PropertyIdentifier::CREDENTIALS => Ok(PropertyValue::List(
                self.credentials
                    .iter()
                    .map(|oid| PropertyValue::ObjectIdentifier(*oid))
                    .collect(),
            )),
            p if p == PropertyIdentifier::ASSIGNED_ACCESS_RIGHTS => Ok(PropertyValue::Unsigned(
                self.assigned_access_rights_count as u64,
            )),
            _ => Err(common::unknown_property_error()),
        }
    }

    fn write_property(
        &mut self,
        property: PropertyIdentifier,
        _array_index: Option<u32>,
        value: PropertyValue,
        _priority: Option<u8>,
    ) -> Result<(), Error> {
        if let Some(result) =
            common::write_out_of_service(&mut self.out_of_service, property, &value)
        {
            return result;
        }
        if let Some(result) = common::write_description(&mut self.description, property, &value) {
            return result;
        }
        match property {
            p if p == PropertyIdentifier::PRESENT_VALUE => {
                if let PropertyValue::Enumerated(v) = value {
                    self.present_value = v;
                    Ok(())
                } else {
                    Err(common::invalid_data_type_error())
                }
            }
            p if p == PropertyIdentifier::USER_TYPE => {
                if let PropertyValue::Enumerated(v) = value {
                    self.user_type = v;
                    Ok(())
                } else {
                    Err(common::invalid_data_type_error())
                }
            }
            _ => Err(common::write_access_denied_error()),
        }
    }

    fn property_list(&self) -> Cow<'static, [PropertyIdentifier]> {
        static PROPS: &[PropertyIdentifier] = &[
            PropertyIdentifier::OBJECT_IDENTIFIER,
            PropertyIdentifier::OBJECT_NAME,
            PropertyIdentifier::DESCRIPTION,
            PropertyIdentifier::OBJECT_TYPE,
            PropertyIdentifier::PRESENT_VALUE,
            PropertyIdentifier::USER_TYPE,
            PropertyIdentifier::CREDENTIALS,
            PropertyIdentifier::ASSIGNED_ACCESS_RIGHTS,
            PropertyIdentifier::STATUS_FLAGS,
            PropertyIdentifier::OUT_OF_SERVICE,
            PropertyIdentifier::RELIABILITY,
        ];
        Cow::Borrowed(PROPS)
    }
}

// ---------------------------------------------------------------------------
