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use super::{UInt32};

// Attributes as defined in Part 4, Figure B.7

// Attributes sometimes required and sometimes optional

// Write mask bits

/// Indicates if the AccessLevel Attribute is writable.
pub const WRITE_MASK_ACCESS_LEVEL: UInt32 = 1 << 0;
/// Indicates if the ArrayDimensions Attribute is writable.
pub const WRITE_MASK_ARRAY_DIMENSTIONS: UInt32 = 1 << 1;
///Indicates if the BrowseName Attribute is writable.
pub const WRITE_MASK_BROWSE_NAME: UInt32 = 1 << 2;
/// Indicates if the ContainsNoLoops Attribute is writable.
pub const WRITE_MASK_CONTAINS_NO_LOOPS: UInt32 = 1 << 3;
/// Indicates if the DataType Attribute is writable.
pub const WRITE_MASK_DATA_TYPE: UInt32 = 1 << 4;
/// Indicates if the Description Attribute is writable.
pub const WRITE_MASK_DESCRIPTION: UInt32 = 1 << 5;
/// Indicates if the DisplayName Attribute is writable.
pub const WRITE_MASK_DISPLAY_NAME: UInt32 = 1 << 6;
/// Indicates if the EventNotifier Attribute is writable.
pub const WRITE_MASK_EVENT_NOTIFIER: UInt32 = 1 << 7;
/// Indicates if the Executable Attribute is writable.
pub const WRITE_MASK_EXECUTABLE: UInt32 = 1 << 8;
/// Indicates if the Historizing Attribute is writable.
pub const WRITE_MASK_HISTORIZING: UInt32 = 1 << 9;
/// Indicates if the InverseName Attribute is writable.
pub const WRITE_MASK_INVERSE_NAME: UInt32 = 1 << 10;
/// Indicates if the IsAbstract Attribute is writable.
pub const WRITE_MASK_IS_ABSTRACT: UInt32 = 1 << 11;
/// Indicates if the MinimumSamplingInterval Attribute is writable.
pub const WRITE_MASK_MINIMUM_SAMPLING_INTERVAL: UInt32 = 1 << 12;
/// Indicates if the NodeClass Attribute is writable.
pub const WRITE_MASK_NODE_CLASS: UInt32 = 1 << 13;
/// Indicates if the NodeId Attribute is writable.
pub const WRITE_MASK_NODE_ID: UInt32 = 1 << 14;
/// Indicates if the Symmetric Attribute is writable.
pub const WRITE_MASK_SYMMETRIC: UInt32 = 1 << 15;
/// Indicates if the UserAccessLevel Attribute is writable.
pub const WRITE_MASK_USER_ACCESS_LEVEL: UInt32 = 1 << 16;
/// Indicates if the UserExecutable Attribute is writable.
pub const WRITE_MASK_USER_EXECUTABLE: UInt32 = 1 << 17;
/// Indicates if the UserWriteMask Attribute is writable.
pub const WRITE_MASK_USER_WRITE_MASK: UInt32 = 1 << 18;
/// Indicates if the ValueRank Attribute is writable.
pub const WRITE_MASK_VALUE_RANK: UInt32 = 1 << 19;
/// Indicates if the WriteMask Attribute is writable.
pub const WRITE_MASK_WRITE_MASK: UInt32 = 1 << 20;
/// Indicates if the Value Attribute is writable for a VariableType. It does not apply for Variables
/// since this is handled by the AccessLevel and UserAccessLevel Attributes for the Variable.
/// For Variables this bit shall be set to 0.
pub const WRITE_MASK_VALUE_FOR_VARIABLE_TYPE: UInt32 = 1 << 21;

#[derive(Debug, Copy, Clone, PartialEq)]
pub enum AttributeId {
    NodeId = 1,
    NodeClass = 2,
    BrowseName = 3,
    DisplayName = 4,
    Description = 5,
    WriteMask = 6,
    UserWriteMask = 7,
    IsAbstract = 8,
    Symmetric = 9,
    InverseName = 10,
    ContainsNoLoops = 11,
    EventNotifier = 12,
    Value = 13,
    DataType = 14,
    ValueRank = 15,
    ArrayDimensions = 16,
    AccessLevel = 17,
    UserAccessLevel = 18,
    MinimumSamplingInterval = 19,
    Historizing = 20,
    Executable = 21,
    UserExecutable = 22,
}

impl AttributeId {
    pub fn from_u32(attribute_id: UInt32) -> Result<AttributeId, ()> {
        let attribute_id = match attribute_id {
            1 => AttributeId::NodeId,
            2 => AttributeId::NodeClass,
            3 => AttributeId::BrowseName,
            4 => AttributeId::DisplayName,
            5 => AttributeId::Description,
            6 => AttributeId::WriteMask,
            7 => AttributeId::UserWriteMask,
            8 => AttributeId::IsAbstract,
            9 => AttributeId::Symmetric,
            10 => AttributeId::InverseName,
            11 => AttributeId::ContainsNoLoops,
            12 => AttributeId::EventNotifier,
            13 => AttributeId::Value,
            14 => AttributeId::DataType,
            15 => AttributeId::ValueRank,
            16 => AttributeId::ArrayDimensions,
            17 => AttributeId::AccessLevel,
            18 => AttributeId::UserAccessLevel,
            19 => AttributeId::MinimumSamplingInterval,
            20 => AttributeId::Historizing,
            21 => AttributeId::Executable,
            22 => AttributeId::UserExecutable,
            _ => {
                debug!("Invalid attribute id {}", attribute_id);
                return Err(());
            }
        };
        Ok(attribute_id)
    }
}