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use nom::le_u32;

/// The size of a model in voxels
///
/// Indicates the size of the model in Voxels.
#[derive(Debug, PartialEq)]
pub struct Size {
    /// The width of the model in voxels.
    pub x: u32,
    /// The height of the model in voxels.
    pub y: u32,
    /// The depth of the model in voxels.
    pub z: u32,
}

named!(pub parse_size <&[u8], Size>, do_parse!(
  take!(12)   >>
  x: le_u32 >>
  y: le_u32 >>
  z: le_u32 >>
  (Size { x: x, y: y, z: z })
));


#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn can_parse_size_chunk() {
        let bytes = include_bytes!("../resources/valid_size.bytes").to_vec();
        let result = super::parse_size(&bytes);
        assert!(result.is_done());
        let (_, size) = result.unwrap();
        assert_eq!(
            size,
            Size {
                x: 24,
                y: 24,
                z: 24,
            }
        );
    }
}