"""Dump full oshwhub listing index for both origins to a local jsonl.

只抓 listing API，不抓详情页、不抓附件、不抓工程源。结果落
`data/state/oshwhub_listing_full.jsonl`，每行一条 listing 项。

Usage:
    uv run python scripts/dump_listing_index.py
    uv run python scripts/dump_listing_index.py --page-size 500 --sleep 0.5

API 注意：
- `sort` 参数被服务端静默忽略，无论传啥都返回隐式排序（grade desc → 质量 desc）
- 默认 `origin` 是 std；要 Pro 必须显式 `origin=pro`
- `pageSize` 实测 ≥1000 都接受，单次响应体 ~1 MB
"""

from __future__ import annotations

import argparse
import json
import math
import statistics as st
import sys
import time
from collections import Counter
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
from crawlers.oshwhub.crawler import list_projects, make_client  # noqa: E402

ORIGINS = ("pro", "std")
DEFAULT_OUT = Path("data/state/oshwhub_listing_full.jsonl")


def dump_origin(client, origin: str, page_size: int, sleep: float, sink) -> int:
    # First call to learn `total` / `totalPage`.
    res = list_projects(client, page=1, page_size=page_size, origin=origin)
    total = res["total"]
    n_pages = math.ceil(total / page_size)
    written = 0
    for it in res["lists"]:
        sink.write(json.dumps(it, ensure_ascii=False) + "\n")
        written += 1
    print(
        f"[{origin}] total={total}  pages={n_pages}  pageSize={page_size}",
        flush=True,
    )
    print(f"  page  1/{n_pages}: {len(res['lists'])} items", flush=True)
    for p in range(2, n_pages + 1):
        time.sleep(sleep)
        res = list_projects(client, page=p, page_size=page_size, origin=origin)
        for it in res["lists"]:
            sink.write(json.dumps(it, ensure_ascii=False) + "\n")
            written += 1
        print(f"  page {p:>2}/{n_pages}: {len(res['lists'])} items", flush=True)
    if written != total:
        print(
            f"  WARN: wrote {written} but server said total={total} "
            f"(diff={total - written})",
            file=sys.stderr,
        )
    return written


def summarize(path: Path) -> None:
    by_origin: dict[str, list[dict]] = {}
    with path.open() as f:
        for ln in f:
            it = json.loads(ln)
            by_origin.setdefault(it.get("origin") or "?", []).append(it)
    print("\n===== summary =====")
    print(f"file: {path}  size={path.stat().st_size / 1024 / 1024:.1f} MB")
    for origin, items in sorted(by_origin.items()):
        if not items:
            continue
        likes = sorted(((i.get("count") or {}).get("like") or 0) for i in items)
        views = sorted(((i.get("count") or {}).get("views") or 0) for i in items)
        grades = Counter(i.get("grade") for i in items)
        # date range from created_at
        dates = sorted(i.get("created_at") or "" for i in items if i.get("created_at"))
        date_min = dates[0][:10] if dates else "?"
        date_max = dates[-1][:10] if dates else "?"
        print(f"\n[{origin}] n={len(items)}")
        print(
            f"  likes:  median={likes[len(likes) // 2]}  "
            f"p90={likes[int(len(likes) * 0.9)]}  "
            f"p99={likes[int(len(likes) * 0.99)]}  max={likes[-1]}"
        )
        print(
            f"  views:  median={views[len(views) // 2]}  "
            f"p90={views[int(len(views) * 0.9)]}  max={views[-1]}"
        )
        print(f"  grade:  {dict(sorted(grades.items(), key=lambda kv: -(kv[0] or 0)))}")
        print(f"  dates:  {date_min} .. {date_max}")
        # Quality tiers (handy for batch sizing)
        tier_grade3 = sum(1 for i in items if (i.get("grade") or 0) >= 3)
        tier_like10 = sum(
            1
            for i in items
            if ((i.get("count") or {}).get("like") or 0) >= 10
            and (i.get("grade") or 0) >= 3
        )
        print(f"  tier:   grade>=3: {tier_grade3}   grade>=3 & like>=10: {tier_like10}")


def main(argv: list[str] | None = None) -> int:
    ap = argparse.ArgumentParser()
    ap.add_argument("--out", type=Path, default=DEFAULT_OUT)
    ap.add_argument("--page-size", type=int, default=1000)
    ap.add_argument("--sleep", type=float, default=1.0, help="seconds between page calls")
    args = ap.parse_args(argv)

    args.out.parent.mkdir(parents=True, exist_ok=True)
    print(f"writing -> {args.out}")
    t0 = time.time()
    with args.out.open("w") as sink, make_client() as client:
        total = 0
        for origin in ORIGINS:
            total += dump_origin(client, origin, args.page_size, args.sleep, sink)
            sink.flush()
    print(f"\ndone: {total} items in {time.time() - t0:.1f}s")
    summarize(args.out)
    return 0


if __name__ == "__main__":
    raise SystemExit(main())