#!/usr/bin/env python3
"""Download Albedo eval artifacts (rollouts) for a given eval_run_id.

The public dashboard at albedo.tech lists recent evals and their artifact URLs.
This script looks up that eval, then downloads every artifact the site exposes:

  generated-samples.jsonl   challenger + king rollouts (the main training file)
  scoring-results.jsonl     per-sample judge scores
  verdict.json              win/loss, margins, model URIs
  progress.jsonl            remote generation progress
  remote-logs.txt           remote worker log summary

Usage:
  python pull_eval_rollouts.py 1a23f451-459e-481d-a896-7604220a5d01
  python pull_eval_rollouts.py https://albedo.tech/detail.html?eval_run_id=1a23f451-...
  python pull_eval_rollouts.py 1a23f451-... --out ./evals --sibling-passes
"""

from __future__ import annotations

import argparse
import json
import sys
import time
import urllib.error
import urllib.parse
import urllib.request
from pathlib import Path

DASHBOARD_URLS = [
    "https://albedo.tech/data/dashboard.json",
]

# Same labels the website uses in website/js/config.js ARTIFACT_TYPES.
ARTIFACT_NAMES = {
    "EVAL_VERDICT": "verdict.json",
    "GENERATED_SAMPLES": "generated-samples.jsonl",
    "SCORING_RESULTS": "scoring-results.jsonl",
    "JUDGE_RESULTS": "judge-results.jsonl",
    "EVAL_TRANSCRIPT": "duel-transcript.jsonl",
    "REMOTE_PROGRESS": "progress.jsonl",
    "REMOTE_LOGS": "remote-logs.txt",
    "SANITY_RESULT": "sanity-result.json",
}

# Miners usually want these first; the rest are still downloaded unless --only is set.
DEFAULT_PRIORITY = (
    "GENERATED_SAMPLES",
    "SCORING_RESULTS",
    "EVAL_VERDICT",
    "REMOTE_PROGRESS",
    "REMOTE_LOGS",
    "JUDGE_RESULTS",
    "EVAL_TRANSCRIPT",
    "SANITY_RESULT",
)

USER_AGENT = "albedo-mining-scripts/1.0 (+https://albedo.tech)"
CHUNK = 1 << 16


def log(message: str) -> None:
    print(message, flush=True)


def parse_eval_run_id(raw: str) -> str:
    value = raw.strip()
    if "eval_run_id=" in value:
        query = urllib.parse.urlparse(value).query
        found = urllib.parse.parse_qs(query).get("eval_run_id", [None])[0]
        if found:
            return found.strip()
    return value


def request(url: str, *, timeout: float = 60) -> urllib.request.Request:
    return urllib.request.Request(url, headers={"User-Agent": USER_AGENT})


def fetch_json(url: str, *, timeout: float = 60) -> dict:
    with urllib.request.urlopen(request(url), timeout=timeout) as resp:
        return json.loads(resp.read().decode("utf-8"))


def load_dashboard(urls: list[str]) -> dict:
    last_error: Exception | None = None
    for base in urls:
        # cache-bust the same way the website does
        url = f"{base}?t={int(time.time() * 1000)}"
        try:
            data = fetch_json(url, timeout=90)
            if isinstance(data, dict) and (
                data.get("eval_runs") is not None or data.get("current_eval") is not None
            ):
                return data
            last_error = RuntimeError(f"unexpected dashboard payload from {base}")
        except Exception as exc:  # noqa: BLE001 — try the next mirror
            last_error = exc
    raise RuntimeError(f"could not load dashboard.json: {last_error}")


def iter_dashboard_records(dashboard: dict) -> list[tuple[str, dict]]:
    records: list[tuple[str, dict]] = []
    for run in dashboard.get("eval_runs") or []:
        records.append(("eval_run", run))
    current = dashboard.get("current_eval")
    if isinstance(current, dict) and current.get("eval_run_id"):
        records.append(("current_eval", current))
    for fail in dashboard.get("fails") or []:
        records.append(("fail", fail))
    return records


def find_record(dashboard: dict, eval_run_id: str) -> tuple[str, dict]:
    for kind, record in iter_dashboard_records(dashboard):
        if record.get("eval_run_id") == eval_run_id:
            return kind, record
    raise KeyError(
        f"eval_run_id {eval_run_id} was not in the public dashboard "
        f"({len(dashboard.get('eval_runs') or [])} recent evals + "
        f"{len(dashboard.get('fails') or [])} fails). "
        "The site only publishes the latest ~200 finished evals."
    )


def sibling_passes(dashboard: dict, record: dict) -> list[dict]:
    submission_id = record.get("submission_id")
    if not submission_id:
        return [record]
    runs = [
        run
        for run in (dashboard.get("eval_runs") or [])
        if run.get("submission_id") == submission_id
    ]
    runs.sort(key=lambda run: str(run.get("finished_at") or ""))
    return runs or [record]


def human_bytes(n: int | None) -> str:
    if n is None:
        return "?"
    size = float(n)
    for unit in ("B", "KB", "MB", "GB"):
        if size < 1024 or unit == "GB":
            return f"{size:.1f} {unit}" if unit != "B" else f"{int(size)} B"
        size /= 1024
    return f"{n} B"


def download_file(url: str, dest: Path, *, retries: int = 3) -> dict:
    dest.parent.mkdir(parents=True, exist_ok=True)
    last_error: Exception | None = None
    for attempt in range(1, retries + 1):
        tmp = dest.with_suffix(dest.suffix + ".part")
        try:
            with urllib.request.urlopen(request(url), timeout=180) as resp:
                total = resp.headers.get("Content-Length")
                expected = int(total) if total and total.isdigit() else None
                if dest.exists() and expected is not None and dest.stat().st_size == expected:
                    return {
                        "path": dest,
                        "bytes": expected,
                        "skipped": True,
                        "url": url,
                    }
                written = 0
                started = time.time()
                with tmp.open("wb") as handle:
                    while True:
                        chunk = resp.read(CHUNK)
                        if not chunk:
                            break
                        handle.write(chunk)
                        written += len(chunk)
                if expected is not None and written != expected:
                    raise IOError(f"size mismatch: got {written}, expected {expected}")
            tmp.replace(dest)
            elapsed = max(time.time() - started, 0.001)
            return {
                "path": dest,
                "bytes": written,
                "skipped": False,
                "url": url,
                "mbps": (written / elapsed) / (1024 * 1024),
            }
        except (urllib.error.URLError, TimeoutError, OSError) as exc:
            last_error = exc
            if tmp.exists():
                tmp.unlink(missing_ok=True)
            if attempt < retries:
                time.sleep(1.5 * attempt)
    raise RuntimeError(f"download failed for {url}: {last_error}")


def count_jsonl(path: Path) -> int:
    if path.suffix != ".jsonl" or not path.exists():
        return 0
    n = 0
    with path.open() as handle:
        for line in handle:
            if line.strip():
                n += 1
    return n


def write_meta(out_dir: Path, kind: str, record: dict, downloads: list[dict]) -> Path:
    meta = {
        "source": "https://albedo.tech/data/dashboard.json",
        "kind": kind,
        "eval_run_id": record.get("eval_run_id"),
        "submission_id": record.get("submission_id"),
        "model_uri": record.get("model_uri"),
        "uid": record.get("uid"),
        "hotkey": record.get("hotkey"),
        "challenger_won": record.get("challenger_won"),
        "score_challenger": record.get("score_challenger"),
        "score_king": record.get("score_king"),
        "win_margin": record.get("win_margin"),
        "required_win_margin": record.get("required_win_margin"),
        "pass_margins": record.get("pass_margins"),
        "finished_at": record.get("finished_at"),
        "scoring_mode": record.get("scoring_mode"),
        "scored_sample_count": record.get("scored_sample_count"),
        "total_turns": record.get("total_turns"),
        "valid_turns": record.get("valid_turns"),
        "king": record.get("king"),
        "artifacts": record.get("artifacts") or {},
        "downloaded": [
            {
                "name": item["name"],
                "path": str(item["path"].name),
                "bytes": item["bytes"],
                "skipped": item.get("skipped", False),
                "url": item["url"],
                "rollout_count": item.get("rollout_count"),
            }
            for item in downloads
        ],
    }
    path = out_dir / "eval-meta.json"
    path.write_text(json.dumps(meta, indent=2, default=str) + "\n", encoding="utf-8")
    return path


def pull_one(
    record: dict,
    kind: str,
    out_root: Path,
    *,
    only: set[str] | None,
    force: bool,
) -> Path:
    eval_run_id = record["eval_run_id"]
    out_dir = out_root / eval_run_id
    artifacts = record.get("artifacts") or {}
    if not artifacts:
        raise RuntimeError(f"{eval_run_id}: no artifacts listed on the dashboard")

    keys = [key for key in DEFAULT_PRIORITY if key in artifacts]
    keys.extend(key for key in artifacts if key not in keys)
    if only:
        keys = [key for key in keys if key in only]
        missing = only - set(artifacts)
        if missing:
            log(f"  warning: dashboard has no {', '.join(sorted(missing))}")

    downloads: list[dict] = []
    for key in keys:
        url = artifacts[key]
        name = ARTIFACT_NAMES.get(key, url.rstrip("/").rsplit("/", 1)[-1])
        dest = out_dir / name
        if force and dest.exists():
            dest.unlink()
        log(f"  {name}")
        result = download_file(url, dest)
        result["name"] = name
        if name == "generated-samples.jsonl":
            result["rollout_count"] = count_jsonl(dest)
        status = "skipped" if result.get("skipped") else f"{human_bytes(result['bytes'])}"
        extra = ""
        if result.get("rollout_count") is not None:
            extra = f" · {result['rollout_count']} rollouts"
        if result.get("mbps") and not result.get("skipped"):
            extra += f" · {result['mbps']:.1f} MB/s"
        log(f"    {status}{extra}")
        downloads.append(result)

    write_meta(out_dir, kind, record, downloads)
    return out_dir


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(
        description="Download Albedo eval rollouts for one eval_run_id from albedo.tech."
    )
    parser.add_argument(
        "eval_run_id",
        help="eval run UUID, or a detail.html URL that contains eval_run_id=",
    )
    parser.add_argument(
        "--out",
        type=Path,
        default=Path("evals"),
        help="output directory (default: ./evals/<eval_run_id>/)",
    )
    parser.add_argument(
        "--sibling-passes",
        action="store_true",
        help="also download the other scored pass on the same submission (win-on-both)",
    )
    parser.add_argument(
        "--only",
        metavar="NAME",
        action="append",
        help="download only these artifact keys, e.g. GENERATED_SAMPLES (repeatable)",
    )
    parser.add_argument(
        "--force",
        action="store_true",
        help="re-download files even if they already exist with the same size",
    )
    parser.add_argument(
        "--dashboard-url",
        action="append",
        dest="dashboard_urls",
        help="override dashboard.json URL (repeatable)",
    )
    return parser


def main(argv: list[str] | None = None) -> int:
    args = build_parser().parse_args(argv)
    eval_run_id = parse_eval_run_id(args.eval_run_id)
    if not eval_run_id:
        log("error: missing eval_run_id")
        return 2

    only = {name.upper() for name in args.only} if args.only else None
    dashboard = load_dashboard(args.dashboard_urls or DASHBOARD_URLS)
    kind, record = find_record(dashboard, eval_run_id)
    targets = sibling_passes(dashboard, record) if args.sibling_passes else [record]

    log(f"eval_run_id  {eval_run_id}")
    log(f"model        {record.get('model_uri') or '—'}")
    log(
        f"result       chal {record.get('score_challenger')}  "
        f"king {record.get('score_king')}  "
        f"margin {record.get('win_margin')}  "
        f"won={record.get('challenger_won')}"
    )
    if len(targets) > 1:
        log(f"sibling passes: {len(targets)} evals on submission {record.get('submission_id')}")

    for target in targets:
        tid = target.get("eval_run_id")
        log(f"\ndownloading {tid}")
        out_dir = pull_one(target, kind, args.out, only=only, force=args.force)
        log(f"  wrote {out_dir}")

    return 0


if __name__ == "__main__":
    try:
        raise SystemExit(main())
    except KeyError as exc:
        log(f"error: {exc}")
        raise SystemExit(1)
    except Exception as exc:  # noqa: BLE001
        log(f"error: {exc}")
        raise SystemExit(1)