use serde_yml::Value;
use std::{
    env::args,
    fs::File,
    io::{BufReader, Seek, SeekFrom, stdout},
};
use unity_tools::{
    classes::HValue, object::read::read_value, serialized_file::read_serialized_file,
    unityfs::UnityFS,
};

fn main() -> anyhow::Result<()> {
    env_logger::init_from_env("LOG");
    let file = BufReader::new(File::open(args().nth(1).unwrap())?);
    let mut fs = UnityFS::open(file)?;
    let filter = args().nth(2);

    let node = fs.find_main_file().unwrap().to_owned();
    let mut cab = fs.read(&node)?;

    let file = read_serialized_file(&mut cab)?;
    for ob in file.objects {
        cab.seek(SeekFrom::Start(ob.data_offset))?;
        let typetree = if ob.type_id < 0 {
            unimplemented!()
        } else {
            &file.types[ob.type_id as usize]
        };
        if let Some(typetree) = &typetree.type_tree {
            if let Some(f) = &filter {
                if typetree.type_string != *f && ob.path_id.to_string() != *f {
                    continue;
                }
            }
            let value = read_value(typetree, file.endianness, &mut cab)?;
            let hvalue = HValue::from_value(value)?;

            let mut hvalue = serde_yml::to_value(hvalue)?;
            reduce_large_arrays(&mut hvalue);

            serde_yml::to_writer(stdout(), &hvalue).unwrap();
            println!()
        }
    }

    Ok(())
}

fn reduce_large_arrays(v: &mut Value) {
    match v {
        Value::Sequence(values) => {
            values.iter_mut().for_each(reduce_large_arrays);
            while values.len() > 32 {
                values.pop();
            }
        }
        Value::Mapping(mapping) => mapping.map.values_mut().for_each(reduce_large_arrays),
        Value::Tagged(tagged_value) => reduce_large_arrays(&mut tagged_value.value),
        _ => (),
    }
}