//! Dump a fingerprint of every decoded index run, so two decoder settings can be
//! diffed exactly. Usage: index_hash_dump <resource3d_dir>
use sylpheed_formats::mesh::Xbg7Model;

fn main() {
    let dir = std::env::args().nth(1).expect("resource3d dir");
    let mut files: Vec<_> = std::fs::read_dir(&dir)
        .unwrap()
        .flatten()
        .map(|e| e.path())
        .filter(|p| p.extension().and_then(|s| s.to_str()) == Some("xpr"))
        .collect();
    files.sort();
    for f in &files {
        let Ok(bytes) = std::fs::read(f) else { continue };
        let w = f.file_name().unwrap().to_string_lossy().to_string();
        for m in Xbg7Model::stage_models(&bytes) {
            for (k, sm) in m.meshes.iter().enumerate() {
                let mut h = 1469598103934665603u64;
                for i in &sm.indices {
                    h = (h ^ *i as u64).wrapping_mul(1099511628211);
                }
                println!(
                    "{w} {} {k} vb={:?} n={} h={h:016x}",
                    m.name,
                    sm.vbuf_offset,
                    sm.indices.len()
                );
            }
        }
    }
}