#!/usr/bin/env python3
"""Download the stat-check ELO workbook and write public/elo-data.json.

Run from the statcheck-elo-scraper/ directory:
    python refresh_elo.py
"""
import csv
import json
import sys
from datetime import datetime, timezone
from pathlib import Path

from download_and_parse import download, xlsx_to_csv
from pure_python_elo_scrape import EMBED_URL, download_url_for_embed

HERE = Path(__file__).parent
ROOT = HERE.parent


def csv_to_players(csv_path: Path) -> list[dict]:
    players = []
    with csv_path.open(newline="", encoding="utf-8-sig") as f:
        reader = csv.DictReader(f)
        for row in reader:
            name = row.get("Name", "").strip()
            rank_s = row.get("Rank", "").strip()
            elo_s = row.get("Elo", "").strip()
            last_event = row.get("Last Event", "").strip()
            if not (name and rank_s and elo_s):
                continue
            try:
                players.append({
                    "name": name,
                    "rank": int(rank_s),
                    "elo": round(float(elo_s), 1),
                    "lastEvent": last_event,
                })
            except ValueError:
                pass
    return players


def main() -> None:
    xlsx_path = Path(sys.argv[1]) if len(sys.argv) > 1 else HERE / "elo-pure.xlsx"
    csv_path  = Path(sys.argv[2]) if len(sys.argv) > 2 else HERE / "elo-pure.csv"
    json_path = Path(sys.argv[3]) if len(sys.argv) > 3 else ROOT / "public" / "elo-data.json"

    print("Resolving OneDrive download URL…")
    url = download_url_for_embed(EMBED_URL)

    print("Downloading XLSX…")
    download(url, xlsx_path)
    print(f"  {xlsx_path.stat().st_size:,} bytes → {xlsx_path}")

    print("Converting to CSV…")
    xlsx_to_csv(xlsx_path, csv_path)
    print(f"  {csv_path.stat().st_size:,} bytes → {csv_path}")

    print("Building elo-data.json…")
    players = csv_to_players(csv_path)
    payload = {
        "updated": datetime.now(timezone.utc).isoformat(),
        "players": players,
    }
    json_path.parent.mkdir(parents=True, exist_ok=True)
    json_path.write_text(json.dumps(payload, separators=(",", ":")), encoding="utf-8")
    print(f"  {len(players):,} players → {json_path}")


if __name__ == "__main__":
    main()