#!/usr/bin/env python3
"""Download all Mixamo characters as rigged FBX WITH skin mesh (T-pose).
Reuses mixamo_download's token hot-reload, export, download helpers."""
import argparse, json, os, sys, time, requests
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
import mixamo_download as M

TPOSE = "c9c818ab-b96c-11e4-a802-0aaa78deedf9"   # "T-Pose" product, verified

def main():
    ap = argparse.ArgumentParser()
    ap.add_argument("--token-file", required=True)
    ap.add_argument("--out", default="mixamo_characters")
    ap.add_argument("--delay", type=float, default=1.0)
    ap.add_argument("--max", type=int, default=0)
    a = ap.parse_args()
    M._TOKEN_FILE = a.token_file
    tok = M.load_token_file(a.token_file)
    s = requests.Session(); s.headers.update(M.headers(tok))
    os.makedirs(a.out, exist_ok=True)
    manifest = os.path.join(a.out, "manifest.jsonl")
    done_ids = set()
    if os.path.exists(manifest):
        for ln in open(manifest):
            try: done_ids.add(json.loads(ln)["uuid"])
            except: pass
    mf = open(manifest, "a")

    chars = M.get(s, "https://www.mixamo.com/api/v1/characters",
                  params={"page":1,"limit":300,"type":"Character"})
    if isinstance(chars, dict): chars = chars.get("results", list(chars.values()))
    print("characters:", len(chars), flush=True)

    seen, done, failed = {}, 0, []
    for c in chars:
        uuid = c.get("uuid"); name = c.get("name") or uuid
        if not uuid or uuid in done_ids: continue
        base = M.slug(name); seen[base]=seen.get(base,0)+1
        if seen[base]>1: base="%s_%d"%(base,seen[base])
        fn = base+".fbx"; path=os.path.join(a.out, fn)
        if os.path.exists(path):
            mf.write(json.dumps({"file":fn,"name":name,"uuid":uuid})+"\n"); mf.flush()
            done_ids.add(uuid); continue
        try:
            det = M.get(s, "https://www.mixamo.com/api/v1/products/%s"%TPOSE,
                        params={"character_id":uuid})
            gms = det["details"]["gms_hash"]
            body = {"gms_hash":[M.flatten(g) for g in (gms if isinstance(gms,list) else [gms])],
                    "preferences":{"format":"fbx7_2019","skin":"true","fps":"30","reducekf":"0"},
                    "character_id":uuid,"type":"Character","product_name":name}
            for attempt in range(8):
                r = s.post("https://www.mixamo.com/api/v1/animations/export", json=body, timeout=60)
                if r.status_code==401:
                    M.wait_for_fresh_token(s, a.token_file, s.headers.get("Authorization","")[7:]); continue
                if r.status_code==429: time.sleep(4*(attempt+1)); continue
                r.raise_for_status(); break
            url=None
            for _ in range(40):
                time.sleep(1.5)
                mon=M.get(s,"https://www.mixamo.com/api/v1/characters/%s/monitor"%uuid)
                if mon["status"]=="completed": url=mon["job_result"]; break
                if mon["status"]=="failed": raise RuntimeError(mon.get("message","failed"))
            if not url: raise RuntimeError("timeout")
            size=M.download(url, path)
            mf.write(json.dumps({"file":fn,"name":name,"uuid":uuid})+"\n"); mf.flush()
            done_ids.add(uuid); done+=1
            print("  ok  %-38s %8.1f KB"%(name[:38], size/1024), flush=True)
        except Exception as e:
            failed.append((name,str(e))); print("  ERR %s -> %s"%(name,str(e)[:70]), flush=True)
        if a.max and done>=a.max: break
        time.sleep(a.delay)
    mf.close()
    print("\n%d characters in %s; %d failed"%(done, os.path.abspath(a.out), len(failed)))

if __name__=="__main__": main()