use anyhow::anyhow;
use std::{env::args, fs::File, io::BufReader};
use unity_tools::{classes::material::Material, serialized_file::SerializedFile, unityfs::UnityFS};

fn main() -> anyhow::Result<()> {
    env_logger::init_from_env("LOG");
    let file = BufReader::new(File::open(args().nth(1).unwrap()).unwrap());
    let fs = UnityFS::open(file)?;

    let mode = args().nth(2).unwrap();

    let cabfile = fs
        .find_main_file()
        .ok_or(anyhow!("no CAB file found"))?
        .to_owned();

    let cab = fs.read(&cabfile)?;
    let mut file = SerializedFile::read(cab)?;
    let mut sharedassets = file
        .find_fs_shared_assets(&fs)
        .map(|n| {
            let f = fs.read(&n)?;
            let f = SerializedFile::read(f)?;
            Ok::<_, anyhow::Error>(f)
        })
        .transpose()?;

    for ob in file.objects.clone() {
        if file.get_object_type_tree(&ob)?.type_string != "Material" {
            continue;
        }
        let mat = file.read_object(ob)?.parse::<Material>()?;

        match mode.as_str() {
            "material" => {
                println!("{}", mat.name)
            }
            "shader" => {
                println!(
                    "{}",
                    mat.shader
                        .load(&mut file, sharedassets.as_mut())?
                        .parsed
                        .name
                )
            }
            x => panic!("unknown mode {x:?}"),
        }
    }

    Ok(())
}