#!/usr/bin/env python3
"""Snapshot current DeepSeek vault balances vs the Stage 3 final record."""
import json, pathlib
from concurrent.futures import ThreadPoolExecutor, as_completed
import urllib.request

HERE = pathlib.Path(__file__).resolve().parent
VAULT = HERE / "usable_keys/deepseek/keys.json"
OUT = HERE / "results/deepseek_v2/balance_change.json"

def fetch(key):
    try:
        req = urllib.request.Request(
            "https://api.deepseek.com/user/balance",
            headers={"Authorization": f"Bearer {key}"})
        with urllib.request.urlopen(req, timeout=20) as r:
            data = json.loads(r.read())
        infos = data.get("balance_infos") or []
        cur = infos[0]["currency"] if infos else "CNY"
        bal = float(infos[0].get("total_balance") or 0.0) if infos else 0.0
        return key, cur, bal, "ok"
    except Exception as e:
        return key, None, None, f"{e}"

def main():
    d = json.loads(pathlib.Path(VAULT).read_text())
    print(f"snapshot {len(d)} keys ...", flush=True)
    rows = {}
    with ThreadPoolExecutor(max_workers=16) as ex:
        futs = {ex.submit(fetch, e["key"]): e for e in d}
        done = 0
        for f in as_completed(futs):
            k, cur, bal, st = f.result()
            e = futs[f]
            if st != "ok":
                rows[k] = dict(prev_cur=e.get("currency"), prev_bal=e.get("balance"),
                               cur=None, bal=None, delta=None, status=st)
                print(f"  ERR {k[-6:]} {st}", flush=True)
            else:
                delta = round(bal - e.get("balance", 0.0), 2)
                rows[k] = dict(prev_cur=e.get("currency"), prev_bal=e.get("balance"),
                               cur=cur, bal=bal, delta=delta, status="ok")
            done += 1
            if done % 10 == 0:
                print(f"  {done}/{len(d)}", flush=True)
    pathlib.Path(OUT).write_text(json.dumps(rows, indent=2, ensure_ascii=False))
    cny_now = sum(v["bal"] for v in rows.values() if v.get("cur") == "CNY")
    usd_now = sum(v["bal"] for v in rows.values() if v.get("cur") == "USD")
    cny_prev = sum(v["prev_bal"] for v in rows.values() if v.get("prev_cur") == "CNY")
    usd_prev = sum(v["prev_bal"] for v in rows.values() if v.get("prev_cur") == "USD")
    print(f"  prev: CNY {cny_prev:.2f} + USD {usd_prev:.2f}")
    print(f"  now : CNY {cny_now:.2f} + USD {usd_now:.2f}")
    print("written", OUT)

if __name__ == "__main__":
    main()