use sylpheed_formats::{hash::name_hash, movie_manifest, movie_voice, slb, PakArchive};
use std::fs;use std::io::{Read,Seek,SeekFrom};use std::process::Command;
fn rg(disc:&str,g:u64,n:usize)->Vec<u8>{let mut segs=vec![];let mut cum=0u64;for i in 0..5{let p=format!("{disc}/dat/sound.p{i:02}");if let Ok(m)=fs::metadata(&p){segs.push((cum,m.len(),p));cum+=m.len();}}let mut out=vec![];let(mut need,mut pos)=(n,g);for(base,len,path)in &segs{if need==0||pos>=base+len||pos<*base{continue;}let local=pos-base;let take=need.min((len-local)as usize);let mut f=fs::File::open(path).unwrap();f.seek(SeekFrom::Start(local)).unwrap();let mut b=vec![0u8;take];f.read_exact(&mut b).unwrap();out.extend_from_slice(&b);need-=take;pos+=take as u64;}out}
fn contains(h:&[u8],n:&[u8])->bool{h.windows(n.len()).any(|w|w==n)}
fn dur(w:&str)->String{let o=Command::new("ffprobe").args(["-v","error","-show_entries","format=duration","-of","default=nw=1:nk=1",w]).output().unwrap();String::from_utf8_lossy(&o.stdout).trim().to_string()}
fn main(){
    let disc=std::env::var("SYLPHEED_DISC").unwrap();
    let tpak=PakArchive::open(format!("{disc}/dat/tables.pak")).unwrap();
    let manifest=tpak.entries().iter().find_map(|e|tpak.read(e).ok().filter(|b|movie_manifest::is_manifest(b))).unwrap();
    let code="eng";
    let registry=tpak.entries().iter().find_map(|e|tpak.read(e).ok().filter(|b|contains(b,format!("{code}\\Movie\\VOICE_ADV.slb").as_bytes()))).unwrap();
    let ids=movie_voice::registry_voice_ids(&registry);
    let stoc=fs::read(format!("{disc}/dat/sound.pak")).unwrap();
    let entries=PakArchive::parse_toc(&stoc).unwrap();
    for movie in ["ADV","RT01A","RT01B","RT01C_1","S00A","S01A","hokyu_LS_s02A","hokyu_LS_s09A","hokyu_LS_s02H","hokyu_DS_s07H"]{
        let Some(token)=movie_manifest::voice_token(&manifest,movie) else { println!("{movie:16} no token"); continue };
        let Some(&id)=ids.get(&token) else { println!("{movie:16} token {token} not in registry"); continue };
        let Some(anchor)=["Movie","etc","Voice"].iter().find_map(|d|{let h=name_hash(&format!("{code}\\{d}\\{token}.slb"));entries.binary_search_by_key(&h,|e|e.name_hash).ok().map(|i|entries[i].offset as u64)}) else { println!("{movie:16} no anchor for {token}"); continue };
        let win_start=(anchor.saturating_sub(2*1024*1024))&!3;
        let window=rg(&disc,win_start,8*1024*1024);
        let Some(end_local)=movie_voice::find_descriptor(&window,id) else { println!("{movie:16} id {id}: desc NOT FOUND"); continue };
        let end=win_start+end_local as u64;
        let start=movie_voice::find_descriptor(&window,id.wrapping_sub(1))
            .or_else(||movie_voice::find_descriptor_before(&window,end_local))
            .map(|o|win_start+o as u64)
            .filter(|&s|s<end && end-s<1_500_000)
            .unwrap_or(anchor);
        let region=rg(&disc,start,(end-start) as usize);
        let mut riffs=slb::to_xma_riffs(&region);
        if riffs.is_empty(){ riffs=slb::to_xma_riff_best(&region).into_iter().collect(); }
        let mut d="?".into();
        if let Some(r)=riffs.first(){ let xp=format!("/tmp/ra2_{movie}.xma.wav");let wp=format!("/tmp/ra2_{movie}.wav");fs::write(&xp,r).unwrap();let _=Command::new("ffmpeg").args(["-hide_banner","-v","error","-y","-i",&xp,&wp]).status();d=dur(&wp);}
        let mv=dur(&format!("{disc}/dat/movie/{movie}.wmv"));
        println!("{movie:16} id={id:5} region={}KB riffs={} voice={d}s movie={mv}s", (end-start)/1024, riffs.len());
    }
}
