492 lines
18 KiB
Python
Executable File
492 lines
18 KiB
Python
Executable File
#!/usr/bin/env -S uv run --script
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# /// script
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# requires-python = ">=3.11"
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# dependencies = ["croniter"]
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# ///
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"""Deterministic CRUD for reminders backed by SQLite.
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CLI tool for LLM skills to create, list, edit, enable, disable, and remove reminders.
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All mutations are atomic SQLite transactions with audit logging.
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"""
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from __future__ import annotations
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import argparse
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import json
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import os
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import sys
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from datetime import date, datetime, timezone
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from pathlib import Path
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from zoneinfo import ZoneInfo
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from croniter import croniter
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from db import get_db, init_db, log_operation
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from random_times import compute_fire_times, minutes_to_hhmm, parse_window
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WORKSPACE = Path(__file__).resolve().parent.parent.parent.parent
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DEFAULT_DB_PATH = WORKSPACE / "db" / "reminders.sqlite"
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DB_PATH = Path(os.environ.get("REMIND_DB", str(DEFAULT_DB_PATH)))
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PRAGUE = ZoneInfo("Europe/Prague")
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def _now() -> str:
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return datetime.now(timezone.utc).isoformat(timespec="seconds")
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def _ensure_db() -> None:
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if not DB_PATH.exists():
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init_db(DB_PATH)
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def _build_random(args: argparse.Namespace) -> dict | None:
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"""Assemble and validate the random schedule block, or None if no --random-* flag given."""
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fields = {
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"times_per_day": args.random_times_per_day,
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"window": args.random_window,
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"days": args.random_days,
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"from": args.random_from,
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"until": args.random_until,
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}
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if all(value is None for value in fields.values()):
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return None
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if fields["times_per_day"] is None or fields["window"] is None:
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raise ValueError("random schedule needs --random-times-per-day and --random-window")
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cfg = {key: value for key, value in fields.items() if value is not None}
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compute_fire_times(date(2000, 1, 1), "validation", cfg)
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return cfg
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def _insert_schedules(conn, reminder_id: int, args: argparse.Namespace, random_cfg: dict | None) -> None:
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if args.at:
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for at_str in args.at:
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conn.execute(
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"INSERT INTO schedule_at (reminder_id, at_datetime) VALUES (?, ?)",
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(reminder_id, at_str),
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)
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if args.cron:
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for expr in args.cron:
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conn.execute(
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"INSERT INTO schedule_cron (reminder_id, cron_expr) VALUES (?, ?)",
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(reminder_id, expr),
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)
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if random_cfg:
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start, end = parse_window(random_cfg["window"])
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conn.execute(
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"""
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INSERT INTO schedule_random
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(reminder_id, times_per_day, window_start, window_end, days_filter, from_date, until_date)
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VALUES (?, ?, ?, ?, ?, ?, ?)
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""",
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(
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reminder_id,
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random_cfg["times_per_day"],
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start,
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end,
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random_cfg.get("days"),
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random_cfg.get("from"),
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random_cfg.get("until"),
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),
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)
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def _fetch_reminder(conn, reminder_id: int) -> dict:
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row = conn.execute(
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"SELECT id, text, enabled, timezone, created_at, updated_at, deleted_at FROM reminders WHERE id = ?",
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(reminder_id,),
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).fetchone()
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if row is None:
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raise ValueError(f"reminder {reminder_id} not found")
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reminder = dict(row)
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reminder["at"] = [
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dict(r) for r in conn.execute(
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"SELECT id, at_datetime FROM schedule_at WHERE reminder_id = ?", (reminder_id,)
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).fetchall()
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]
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reminder["cron"] = [
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dict(r) for r in conn.execute(
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"SELECT id, cron_expr FROM schedule_cron WHERE reminder_id = ?", (reminder_id,)
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).fetchall()
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]
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reminder["random"] = [
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dict(r) for r in conn.execute(
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"SELECT id, times_per_day, window_start, window_end, days_filter, from_date, until_date FROM schedule_random WHERE reminder_id = ?",
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(reminder_id,),
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).fetchall()
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]
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return reminder
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def _find_by_keyword(conn, keyword: str) -> list[dict]:
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escaped = keyword.replace("\\", "\\\\").replace("%", "\\%").replace("_", "\\_")
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rows = conn.execute(
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"SELECT id, text, enabled, timezone, created_at, updated_at, deleted_at "
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"FROM reminders WHERE text LIKE ? ESCAPE '\\' AND deleted_at IS NULL",
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(f"%{escaped}%",),
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).fetchall()
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return [dict(r) for r in rows]
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def _resolve_one(conn, args: argparse.Namespace) -> dict | None:
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"""Resolve exactly one active reminder by --id (exact) or --keyword (substring).
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Prints a JSON error to stderr and returns None when no/ambiguous match. Ambiguous
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matches include each id so the caller can retry with --id.
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"""
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rid = getattr(args, "id", None)
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if rid is not None:
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row = conn.execute(
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"SELECT id, text, enabled, timezone, created_at, updated_at, deleted_at "
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"FROM reminders WHERE id = ? AND deleted_at IS NULL",
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(rid,),
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).fetchone()
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if row is None:
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print(json.dumps({"error": "no match", "id": rid}), file=sys.stderr)
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return None
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return dict(row)
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keyword = (args.keyword or "").strip().lower()
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if not keyword:
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print(json.dumps({"error": "provide --id or --keyword"}), file=sys.stderr)
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return None
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matches = _find_by_keyword(conn, keyword)
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if len(matches) == 0:
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print(json.dumps({"error": "no match", "keyword": args.keyword}), file=sys.stderr)
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return None
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if len(matches) > 1:
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print(
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json.dumps(
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{"error": "ambiguous", "matches": [{"id": m["id"], "text": m["text"]} for m in matches]},
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ensure_ascii=False,
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),
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file=sys.stderr,
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)
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return None
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return matches[0]
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def cmd_list(_args: argparse.Namespace) -> int:
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_ensure_db()
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conn = get_db(DB_PATH)
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try:
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rows = conn.execute(
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"SELECT id, text, enabled FROM reminders WHERE deleted_at IS NULL ORDER BY id"
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).fetchall()
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if not rows:
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print("(no active reminders)")
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return 0
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for row in rows:
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rid = row["id"]
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status = "enabled" if row["enabled"] else "disabled"
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print(f"#{rid} {row['text']} [{status}]")
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for line in _schedule_lines(conn, rid):
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print(f" {line}")
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return 0
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finally:
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conn.close()
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def _schedule_lines(conn, reminder_id: int) -> list[str]:
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"""Human-readable schedule descriptions for one reminder, in at/cron/random order."""
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lines = []
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for r in conn.execute("SELECT at_datetime FROM schedule_at WHERE reminder_id = ?", (reminder_id,)):
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lines.append(f"at: {r['at_datetime']}")
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for r in conn.execute("SELECT cron_expr FROM schedule_cron WHERE reminder_id = ?", (reminder_id,)):
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lines.append(f"cron: {r['cron_expr']}")
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random_rows = conn.execute(
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"SELECT times_per_day, window_start, window_end, days_filter, from_date, until_date "
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"FROM schedule_random WHERE reminder_id = ?",
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(reminder_id,),
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)
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for r in random_rows:
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window = f"{minutes_to_hhmm(r['window_start'])}–{minutes_to_hhmm(r['window_end'])}"
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parts = [f"random: {r['times_per_day']}× daily {window}"]
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if r["days_filter"]:
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parts.append(f"({r['days_filter']})")
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if r["from_date"]:
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parts.append(f"from {r['from_date']}")
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if r["until_date"]:
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parts.append(f"until {r['until_date']}")
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lines.append(" ".join(parts))
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return lines
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def cmd_add(args: argparse.Namespace) -> int:
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text = (args.text or "").strip()
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if not text:
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print(json.dumps({"error": "text must not be empty"}), file=sys.stderr)
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return 1
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try:
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random_cfg = _build_random(args)
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except ValueError as exc:
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print(json.dumps({"error": str(exc)}), file=sys.stderr)
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return 1
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if not args.at and not args.cron and not random_cfg:
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print(json.dumps({"error": "provide --cron, --at, or --random-* options"}), file=sys.stderr)
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return 1
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if args.at:
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for at_str in args.at:
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try:
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datetime.fromisoformat(at_str)
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except ValueError as exc:
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print(json.dumps({"error": f"invalid --at datetime: {exc}"}), file=sys.stderr)
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return 1
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if args.cron:
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for expr in args.cron:
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if not croniter.is_valid(expr):
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print(json.dumps({"error": f"invalid cron expression: {expr!r}"}), file=sys.stderr)
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return 1
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_ensure_db()
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conn = get_db(DB_PATH)
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try:
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conn.execute("BEGIN")
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now = _now()
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cur = conn.execute(
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"INSERT INTO reminders (text, enabled, timezone, created_at, updated_at) VALUES (?, 1, 'Europe/Prague', ?, ?)",
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(text, now, now),
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)
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reminder_id = cur.lastrowid
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_insert_schedules(conn, reminder_id, args, random_cfg)
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conn.execute("COMMIT")
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reminder = _fetch_reminder(conn, reminder_id)
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log_operation("ADD", reminder_id, f'text="{text}"')
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print(json.dumps({"added": reminder}, ensure_ascii=False))
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return 0
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except Exception as exc:
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conn.execute("ROLLBACK")
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print(json.dumps({"error": str(exc)}), file=sys.stderr)
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return 1
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finally:
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conn.close()
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def cmd_remove(args: argparse.Namespace) -> int:
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_ensure_db()
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conn = get_db(DB_PATH)
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try:
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target = _resolve_one(conn, args)
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if target is None:
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return 1
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rid = target["id"]
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conn.execute("BEGIN")
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conn.execute("UPDATE reminders SET deleted_at = ?, updated_at = ? WHERE id = ?", (_now(), _now(), rid))
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conn.execute("COMMIT")
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log_operation("REMOVE", rid, f'text="{target["text"]}"')
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reminder = _fetch_reminder(conn, rid)
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print(json.dumps({"removed": reminder}, ensure_ascii=False))
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return 0
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except Exception as exc:
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conn.execute("ROLLBACK")
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print(json.dumps({"error": str(exc)}), file=sys.stderr)
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return 1
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finally:
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conn.close()
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def cmd_edit(args: argparse.Namespace) -> int:
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if args.replace_schedules and not (args.at or args.cron or args.random_times_per_day or args.random_window):
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print(json.dumps({"error": "--replace-schedules requires at least one --cron/--at/--random-* option"}), file=sys.stderr)
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return 1
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new_text = None
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if args.text:
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new_text = args.text.strip()
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if not new_text:
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print(json.dumps({"error": "text must not be empty"}), file=sys.stderr)
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return 1
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try:
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random_cfg = _build_random(args)
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except ValueError as exc:
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print(json.dumps({"error": str(exc)}), file=sys.stderr)
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return 1
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_ensure_db()
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conn = get_db(DB_PATH)
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try:
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target = _resolve_one(conn, args)
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if target is None:
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return 1
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rid = target["id"]
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conn.execute("BEGIN")
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now = _now()
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if new_text is not None:
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conn.execute("UPDATE reminders SET text = ?, updated_at = ? WHERE id = ?", (new_text, now, rid))
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log_operation("EDIT", rid, f'text="{new_text}"')
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if args.replace_schedules:
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conn.execute("DELETE FROM schedule_at WHERE reminder_id = ?", (rid,))
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conn.execute("DELETE FROM schedule_cron WHERE reminder_id = ?", (rid,))
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conn.execute("DELETE FROM schedule_random WHERE reminder_id = ?", (rid,))
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_insert_schedules(conn, rid, args, random_cfg)
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conn.execute("UPDATE reminders SET updated_at = ? WHERE id = ?", (now, rid))
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log_operation("EDIT", rid, "schedules replaced")
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conn.execute("COMMIT")
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reminder = _fetch_reminder(conn, rid)
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print(json.dumps({"edited": reminder}, ensure_ascii=False))
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return 0
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except Exception as exc:
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conn.execute("ROLLBACK")
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print(json.dumps({"error": str(exc)}), file=sys.stderr)
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return 1
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finally:
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conn.close()
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def cmd_enable(args: argparse.Namespace) -> int:
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_ensure_db()
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conn = get_db(DB_PATH)
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try:
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target = _resolve_one(conn, args)
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if target is None:
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return 1
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rid = target["id"]
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conn.execute("UPDATE reminders SET enabled = 1, updated_at = ? WHERE id = ?", (_now(), rid))
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log_operation("ENABLE", rid, None)
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reminder = _fetch_reminder(conn, rid)
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print(json.dumps({"enabled": reminder}, ensure_ascii=False))
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return 0
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except Exception as exc:
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print(json.dumps({"error": str(exc)}), file=sys.stderr)
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return 1
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finally:
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conn.close()
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def cmd_disable(args: argparse.Namespace) -> int:
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_ensure_db()
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conn = get_db(DB_PATH)
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try:
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target = _resolve_one(conn, args)
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if target is None:
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return 1
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rid = target["id"]
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conn.execute("UPDATE reminders SET enabled = 0, updated_at = ? WHERE id = ?", (_now(), rid))
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log_operation("DISABLE", rid, None)
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reminder = _fetch_reminder(conn, rid)
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print(json.dumps({"disabled": reminder}, ensure_ascii=False))
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return 0
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except Exception as exc:
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print(json.dumps({"error": str(exc)}), file=sys.stderr)
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return 1
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finally:
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conn.close()
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def cmd_delivered(args: argparse.Namespace) -> int:
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"""List reminders actually delivered to the user, newest last.
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Answers 'what reminders arrived today?'. fire_time/delivered_at are stored in
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Prague local time, so no conversion is needed. Defaults to today (Prague).
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"""
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_ensure_db()
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conn = get_db(DB_PATH)
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try:
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since = (args.since or "").strip()
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if since:
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try:
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date.fromisoformat(since)
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except ValueError as exc:
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print(json.dumps({"error": f"invalid --since date: {exc}"}), file=sys.stderr)
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return 1
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rows = conn.execute(
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"""
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SELECT f.delivered_at, r.text
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FROM reminder_fires f
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JOIN reminders r ON r.id = f.reminder_id
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WHERE f.status = 'delivered' AND f.fire_time >= ?
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ORDER BY f.delivered_at
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""",
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(since,),
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).fetchall()
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else:
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today = datetime.now(PRAGUE).date().isoformat()
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rows = conn.execute(
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"""
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SELECT f.delivered_at, r.text
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FROM reminder_fires f
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JOIN reminders r ON r.id = f.reminder_id
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WHERE f.status = 'delivered' AND substr(f.fire_time, 1, 10) = ?
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ORDER BY f.delivered_at
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""",
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(today,),
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).fetchall()
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for row in rows:
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print(f"{row['delivered_at']} {row['text']}")
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return 0
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finally:
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conn.close()
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def main() -> None:
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parser = argparse.ArgumentParser(description="CRUD for reminders (SQLite backed)")
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sub = parser.add_subparsers(dest="command", required=True)
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sub.add_parser("list", help="List all active reminders as JSON")
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add_p = sub.add_parser("add", help="Add a new reminder")
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add_p.add_argument("--text", required=True, help="Reminder text")
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add_p.add_argument("--cron", action="append", metavar="EXPR", help="Cron expression (repeatable)")
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add_p.add_argument("--at", action="append", metavar="ISO_DATETIME", help="One-time datetime ISO 8601 (repeatable)")
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add_p.add_argument("--random-times-per-day", type=int, dest="random_times_per_day", metavar="N", help="Random schedule: fires per day")
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add_p.add_argument("--random-window", dest="random_window", metavar="HH:MM-HH:MM", help="Random schedule: daily time window")
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add_p.add_argument("--random-days", dest="random_days", metavar="DOW", help="Random schedule: cron day-of-week filter")
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add_p.add_argument("--random-from", dest="random_from", metavar="YYYY-MM-DD", help="Random schedule: start date")
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add_p.add_argument("--random-until", dest="random_until", metavar="YYYY-MM-DD", help="Random schedule: end date")
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remove_p = sub.add_parser("remove", help="Remove a reminder by keyword or id (soft delete)")
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remove_p.add_argument("--keyword", help="Substring to match against reminder text")
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remove_p.add_argument("--id", type=int, help="Exact reminder id (disambiguates duplicate texts)")
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edit_p = sub.add_parser("edit", help="Edit a reminder by keyword or id")
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edit_p.add_argument("--keyword", help="Substring to match against reminder text")
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edit_p.add_argument("--id", type=int, help="Exact reminder id (disambiguates duplicate texts)")
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edit_p.add_argument("--text", help="New reminder text")
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edit_p.add_argument("--replace-schedules", action="store_true", help="Replace all schedules with new ones")
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edit_p.add_argument("--cron", action="append", metavar="EXPR", help="Cron expression (repeatable)")
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edit_p.add_argument("--at", action="append", metavar="ISO_DATETIME", help="One-time datetime (repeatable)")
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edit_p.add_argument("--random-times-per-day", type=int, dest="random_times_per_day", metavar="N")
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edit_p.add_argument("--random-window", dest="random_window", metavar="HH:MM-HH:MM")
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edit_p.add_argument("--random-days", dest="random_days", metavar="DOW")
|
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edit_p.add_argument("--random-from", dest="random_from", metavar="YYYY-MM-DD")
|
||
edit_p.add_argument("--random-until", dest="random_until", metavar="YYYY-MM-DD")
|
||
|
||
enable_p = sub.add_parser("enable", help="Enable a reminder by keyword or id")
|
||
enable_p.add_argument("--keyword")
|
||
enable_p.add_argument("--id", type=int, help="Exact reminder id")
|
||
|
||
disable_p = sub.add_parser("disable", help="Disable a reminder by keyword or id")
|
||
disable_p.add_argument("--keyword")
|
||
disable_p.add_argument("--id", type=int, help="Exact reminder id")
|
||
|
||
delivered_p = sub.add_parser("delivered", help="List reminders delivered to the user (default: today)")
|
||
delivered_p.add_argument("--since", metavar="YYYY-MM-DD", help="List deliveries on/after this date instead of today")
|
||
|
||
args = parser.parse_args()
|
||
dispatch = {
|
||
"list": cmd_list,
|
||
"add": cmd_add,
|
||
"remove": cmd_remove,
|
||
"edit": cmd_edit,
|
||
"enable": cmd_enable,
|
||
"disable": cmd_disable,
|
||
"delivered": cmd_delivered,
|
||
}
|
||
return dispatch[args.command](args)
|
||
|
||
|
||
if __name__ == "__main__":
|
||
sys.exit(main())
|