"""Persistent Task Center store."""

from __future__ import annotations

import json
from pathlib import Path
from typing import Any


class TaskStore:
    def __init__(self, root: str = "runtime/task-center"):
        self.root = Path(root)
        self.root.mkdir(parents=True, exist_ok=True)
        self.path = self.root / "tasks.jsonl"

    def append(self, task: dict[str, Any]) -> None:
        with self.path.open("a", encoding="utf-8") as f:
            f.write(json.dumps(task, ensure_ascii=False) + "\n")

    def list_all(self) -> list[dict[str, Any]]:
        if not self.path.exists():
            return []
        return [json.loads(line) for line in self.path.read_text(encoding="utf-8").splitlines() if line]

    def latest(self) -> list[dict[str, Any]]:
        return self.list_all()[-100:]


__all__ = ["TaskStore"]