#!/usr/bin/env python3
"""
Read-only probe: for one plan, list every Not-Started task with its assignee
count and attachment count, so the "skip assigned tasks" rule can be validated
against what the Planner grid shows before any behaviour is changed.

Downloads nothing and never PATCHes a task — safe against production Planner.

Run:  .venv\\Scripts\\python scripts\\probe_assignments.py --facility "Balboa"
"""
from __future__ import annotations

import argparse
import logging
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
SRC = ROOT / "src"
for p in (str(ROOT), str(SRC)):
    if p not in sys.path:
        sys.path.insert(0, p)

from config import read_app_config  # noqa: E402
from onedrive_planner_http import (  # noqa: E402
    _build_client,
    _discover_all_plans,
    _get_paged,
    _login_with_retry,
    _match_plan,
    _task_file_urls,
)


def main() -> int:
    ap = argparse.ArgumentParser()
    ap.add_argument("--facility", required=True, help="facility / plan name fragment")
    ap.add_argument("--headed", action="store_true")
    args = ap.parse_args()

    logging.basicConfig(
        level=logging.INFO,
        format="%(asctime)s %(levelname)-7s %(message)s",
        stream=sys.stdout,
    )

    cfg = read_app_config()
    token, _ = _login_with_retry(cfg, headless=not args.headed)
    client = _build_client(cfg, token)

    plans = _discover_all_plans(client, cfg)
    plan = _match_plan(plans, args.facility)
    if not plan:
        print(f"no plan matched {args.facility!r}")
        return 1

    print(f"\nplan: {plan.get('title')!r}\n")
    tasks = _get_paged(
        client,
        f"planner/plans/{plan['id']}/tasks",
        cfg,
        **{"$select": "id,title,percentComplete,assignments,orderHint"},
    )

    print(f"{'%':>4}  {'assignees':>9}  {'files':>5}  title")
    print("-" * 78)
    would_download = would_skip = 0
    for t in tasks:
        pct = t.get("percentComplete") or 0
        if pct != 0:
            continue
        assignees = len(t.get("assignments") or {})
        n_files = len(_task_file_urls(client, t["id"], cfg))
        print(f"{pct:>4}  {assignees:>9}  {n_files:>5}  {(t.get('title') or '')[:50]}")
        if n_files:
            if assignees:
                would_skip += 1
            else:
                would_download += 1

    print("-" * 78)
    print(f"With the 'skip assigned' rule: {would_download} would download, "
          f"{would_skip} would skip (attachment-bearing tasks only)")
    return 0


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