use psd::{ColorMode, Psd, PsdChannelCompression};

fn main () {
    // .. Get a byte slice of PSD file data somehow ..
    let psd = include_bytes!("./my-psd-file.psd");

    let psd = Psd::from_bytes(psd).unwrap();

    assert_eq!(psd.color_mode(), ColorMode::Rgb);

    // For this PSD the final combined image is RleCompressed
    assert_eq!(psd.compression(), &PsdChannelCompression::RleCompressed);

    assert_eq!(psd.width(), 500);
    assert_eq!(psd.height(), 500);

    // Get the combined final image for the PSD.
    let final_image: Vec<u8> = psd.rgba();

    for layer in psd.layers().iter() {
        let name = layer.name();

        let pixels: Vec<u8> = layer.rgba().unwrap();
    }

    let green_layer = psd.layer_by_name("Green Layer").unwrap();

    // In this layer the red channel is uncompressed
    assert_eq!(green_layer.compression(&PsdChannelKind::Red).unwrap(), PsdChannelCompression::RawData);

    // In this layer the green channel is RLE compressed
    assert_eq!(green_layer.compression(&PsdChannelKind::Green).unwrap(), PsdChannelCompression::RleCompressed);

    // Combine the PSD layers top to bottom, ignoring any layers that begin with an `_`
    let pixels: Vec<u8> = psd.flatten_layers_rgba(&|(_idx, layer)| {
        !layer.name().starts_with("_")
    }).unwrap();
}