402 lines
17 KiB
Python
402 lines
17 KiB
Python
from __future__ import annotations
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import json
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import os
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import tempfile
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import threading
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from copy import deepcopy
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from datetime import date, datetime, timedelta
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from pathlib import Path
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from typing import Any
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from uuid import uuid4
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from zoneinfo import ZoneInfo
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from .models import DailyRecordInput, TaskInput
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SCHEMA_VERSION = 1
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SHANGHAI = ZoneInfo("Asia/Shanghai")
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class NotFoundError(Exception):
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pass
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class ConflictError(Exception):
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pass
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class ValidationError(Exception):
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pass
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def now_iso() -> str:
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return datetime.now(SHANGHAI).isoformat(timespec="seconds")
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class JsonRepository:
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"""Single-process JSON repository with atomic same-directory replacement."""
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def __init__(self, root: Path):
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self.root = Path(root)
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self.tasks_dir = self.root / "tasks"
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self.revisions_dir = self.root / "revisions"
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self.daily_dir = self.root / "daily"
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self.archive_dir = self.root / "archive"
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self.meta_path = self.root / "meta.json"
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self._lock = threading.RLock()
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for folder in (self.root, self.tasks_dir, self.revisions_dir, self.daily_dir, self.archive_dir):
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folder.mkdir(parents=True, exist_ok=True)
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if not self.meta_path.exists():
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yesterday = date.today() - timedelta(days=1)
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self._atomic_write(self.meta_path, {
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"schemaVersion": SCHEMA_VERSION,
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"version": 1,
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"taskOrder": [],
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"lastClosedDate": yesterday.isoformat(),
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})
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def _read(self, path: Path, default: Any = None) -> Any:
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if not path.exists():
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return deepcopy(default)
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with path.open("r", encoding="utf-8") as handle:
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return json.load(handle)
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def _atomic_write(self, path: Path, value: Any) -> None:
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path.parent.mkdir(parents=True, exist_ok=True)
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fd, temp_name = tempfile.mkstemp(prefix=f".{path.name}.", suffix=".tmp", dir=path.parent)
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try:
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with os.fdopen(fd, "w", encoding="utf-8", newline="\n") as handle:
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json.dump(value, handle, ensure_ascii=False, indent=2)
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handle.write("\n")
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handle.flush()
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os.fsync(handle.fileno())
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os.replace(temp_name, path)
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if os.name != "nt":
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dir_fd = os.open(path.parent, os.O_DIRECTORY)
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try:
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os.fsync(dir_fd)
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finally:
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os.close(dir_fd)
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finally:
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if os.path.exists(temp_name):
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os.unlink(temp_name)
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def _meta(self) -> dict[str, Any]:
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return self._read(self.meta_path)
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def _task_path(self, task_id: str) -> Path:
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return self.tasks_dir / f"{task_id}.json"
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def _daily_path(self, logical_date: date) -> Path:
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return self.daily_dir / str(logical_date.year) / f"{logical_date.isoformat()}.json"
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def _load_task(self, task_id: str) -> dict[str, Any]:
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task = self._read(self._task_path(task_id))
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if task is None:
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raise NotFoundError("任务不存在")
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return task
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def list_tasks(self, include_deleted: bool = False) -> dict[str, Any]:
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with self._lock:
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meta = self._meta()
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tasks = []
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for path in self.tasks_dir.glob("*.json"):
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task = self._read(path)
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if include_deleted or not task.get("deletedAt"):
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tasks.append(task)
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positions = {task_id: index for index, task_id in enumerate(meta["taskOrder"])}
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tasks.sort(key=lambda item: (positions.get(item["taskId"], 10**9), item["createdAt"]))
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return {"version": meta["version"], "items": tasks}
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def get_task(self, task_id: str, include_deleted: bool = False) -> dict[str, Any]:
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with self._lock:
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task = self._load_task(task_id)
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if task.get("deletedAt") and not include_deleted:
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raise NotFoundError("任务不存在")
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return task
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def _metric_dicts(self, payload: TaskInput, old: dict[str, Any] | None = None) -> list[dict[str, Any]]:
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old_ids = {item["metricId"] for item in (old or {}).get("metrics", [])}
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result = []
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seen = set()
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for metric in payload.metrics:
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metric_data = metric.model_dump(mode="json")
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metric_id = metric_data.get("metricId")
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if not metric_id:
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metric_id = str(uuid4())
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elif old is not None and metric_id not in old_ids:
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raise ValidationError("不能指定不属于该任务的 metricId")
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if metric_id in seen:
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raise ValidationError("metricId 不能重复")
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seen.add(metric_id)
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metric_data["metricId"] = metric_id
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result.append(metric_data)
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return result
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def _write_revision(self, task: dict[str, Any]) -> None:
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path = self.revisions_dir / task["taskId"] / f"{task['revision']}.json"
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self._atomic_write(path, task)
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def create_task(self, payload: TaskInput) -> dict[str, Any]:
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with self._lock:
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task_id = str(uuid4())
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timestamp = now_iso()
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task = {
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"schemaVersion": SCHEMA_VERSION,
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"taskId": task_id,
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"version": 1,
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"revision": 1,
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**payload.model_dump(mode="json", exclude={"metrics"}),
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"metrics": self._metric_dicts(payload),
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"createdAt": timestamp,
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"updatedAt": timestamp,
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"deletedAt": None,
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}
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self._atomic_write(self._task_path(task_id), task)
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self._write_revision(task)
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meta = self._meta()
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meta["taskOrder"].append(task_id)
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meta["version"] += 1
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self._atomic_write(self.meta_path, meta)
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return task
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def update_task(self, task_id: str, payload: TaskInput, expected_version: int) -> dict[str, Any]:
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with self._lock:
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old = self._load_task(task_id)
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if old.get("deletedAt"):
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raise NotFoundError("任务已删除")
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if old["version"] != expected_version:
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raise ConflictError("任务已被更新，请刷新后重试")
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timestamp = now_iso()
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task = {
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**old,
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**payload.model_dump(mode="json", exclude={"metrics"}),
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"metrics": self._metric_dicts(payload, old),
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"version": old["version"] + 1,
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"revision": old["revision"] + 1,
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"updatedAt": timestamp,
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}
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self._atomic_write(self._task_path(task_id), task)
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self._write_revision(task)
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return task
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def _change_deleted(self, task_id: str, expected_version: int, restore: bool) -> dict[str, Any]:
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task = self._load_task(task_id)
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if task["version"] != expected_version:
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raise ConflictError("任务已被更新，请刷新后重试")
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if restore and not task.get("deletedAt"):
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return task
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if not restore and task.get("deletedAt"):
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return task
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task["deletedAt"] = None if restore else now_iso()
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task["version"] += 1
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task["revision"] += 1
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task["updatedAt"] = now_iso()
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self._atomic_write(self._task_path(task_id), task)
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self._write_revision(task)
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return task
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def soft_delete_task(self, task_id: str, expected_version: int) -> dict[str, Any]:
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with self._lock:
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return self._change_deleted(task_id, expected_version, False)
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def restore_task(self, task_id: str, expected_version: int) -> dict[str, Any]:
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with self._lock:
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return self._change_deleted(task_id, expected_version, True)
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def purge_task(self, task_id: str, confirmation: str) -> None:
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with self._lock:
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task = self._load_task(task_id)
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if not task.get("deletedAt"):
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raise ValidationError("永久删除前必须先放入回收站")
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if confirmation != task_id:
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raise ValidationError("确认内容必须是 taskId")
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self._task_path(task_id).unlink()
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revision_folder = self.revisions_dir / task_id
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for path in revision_folder.glob("*.json"):
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path.unlink()
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if revision_folder.exists():
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revision_folder.rmdir()
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touched_months: set[tuple[int, int]] = set()
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for path in self.daily_dir.glob("*/*.json"):
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daily = self._read(path)
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if task_id in daily.get("records", {}):
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del daily["records"][task_id]
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daily["version"] += 1
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self._atomic_write(path, daily)
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day = date.fromisoformat(daily["date"])
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touched_months.add((day.year, day.month))
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meta = self._meta()
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meta["taskOrder"] = [item for item in meta["taskOrder"] if item != task_id]
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meta["version"] += 1
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self._atomic_write(self.meta_path, meta)
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for year, month in touched_months:
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self._rebuild_month(year, month)
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def reorder(self, task_ids: list[str], expected_version: int) -> dict[str, Any]:
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with self._lock:
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meta = self._meta()
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if meta["version"] != expected_version:
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raise ConflictError("排序已被更新，请刷新后重试")
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active_ids = {item["taskId"] for item in self.list_tasks()["items"]}
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if set(task_ids) != active_ids:
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raise ValidationError("排序列表必须包含全部未删除任务")
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deleted_ids = [item for item in meta["taskOrder"] if item not in active_ids]
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meta["taskOrder"] = task_ids + deleted_ids
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meta["version"] += 1
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self._atomic_write(self.meta_path, meta)
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return {"version": meta["version"], "taskIds": task_ids}
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def get_daily(self, task_id: str, logical_date: date) -> dict[str, Any]:
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with self._lock:
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self._load_task(task_id)
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daily = self._read(self._daily_path(logical_date), {
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"schemaVersion": SCHEMA_VERSION,
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"date": logical_date.isoformat(),
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"version": 1,
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"closedAt": None,
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"records": {},
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})
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return daily["records"].get(task_id, {
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"taskId": task_id,
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"taskRevision": self._load_task(task_id)["revision"],
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"version": 0,
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"note": "",
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"completedAt": None,
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"values": {},
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})
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def upsert_daily(self, task_id: str, logical_date: date, payload: DailyRecordInput) -> dict[str, Any]:
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with self._lock:
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task = self._load_task(task_id)
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if task.get("deletedAt"):
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raise NotFoundError("任务已删除")
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path = self._daily_path(logical_date)
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daily = self._read(path, {
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"schemaVersion": SCHEMA_VERSION,
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"date": logical_date.isoformat(),
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"version": 1,
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"closedAt": None,
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"records": {},
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})
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old = daily["records"].get(task_id)
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current_version = old["version"] if old else 0
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if payload.expectedVersion is not None and payload.expectedVersion != current_version:
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raise ConflictError("当日记录已被更新，请刷新后重试")
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metric_map = {metric["metricId"]: metric for metric in task["metrics"]}
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values: dict[str, int] = {}
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for item in payload.values:
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metric = metric_map.get(item.metricId)
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if metric is None:
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raise ValidationError("记录包含未知指标")
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if metric["kind"] == "checkin" and item.value not in (0, 1):
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raise ValidationError("打卡指标只能是 0 或 1")
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values[item.metricId] = item.value
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record = {
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"taskId": task_id,
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"taskRevision": task["revision"],
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"version": current_version + 1,
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"note": payload.note,
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"completedAt": payload.completedAt.isoformat() if payload.completedAt else None,
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"values": values,
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"updatedAt": now_iso(),
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}
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daily["records"][task_id] = record
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daily["version"] += 1
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self._atomic_write(path, daily)
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if logical_date < datetime.now(SHANGHAI).date():
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if not daily.get("closedAt"):
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daily["closedAt"] = now_iso()
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self._atomic_write(path, daily)
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self._rebuild_month(logical_date.year, logical_date.month)
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return record
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def history(self, task_id: str, start: date, end: date) -> dict[str, Any]:
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with self._lock:
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self._load_task(task_id)
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if end < start or (end - start).days > 730:
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raise ValidationError("历史查询范围无效或超过 730 天")
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records = []
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cursor = start
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while cursor <= end:
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daily = self._read(self._daily_path(cursor))
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if daily and task_id in daily.get("records", {}):
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records.append({"date": cursor.isoformat(), **daily["records"][task_id]})
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cursor += timedelta(days=1)
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revisions = [self._read(path) for path in sorted((self.revisions_dir / task_id).glob("*.json"), key=lambda p: int(p.stem))]
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return {"taskId": task_id, "records": records, "revisions": revisions}
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def _rebuild_month(self, year: int, month: int) -> dict[str, Any]:
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summaries: dict[str, Any] = {}
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folder = self.daily_dir / str(year)
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for path in sorted(folder.glob(f"{year:04d}-{month:02d}-*.json")):
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daily = self._read(path)
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if not daily.get("closedAt"):
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continue
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for task_id, record in daily.get("records", {}).items():
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task_summary = summaries.setdefault(task_id, {"days": 0, "completedDays": 0, "metricTotals": {}})
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task_summary["days"] += 1
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if record.get("completedAt"):
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task_summary["completedDays"] += 1
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for metric_id, value in record.get("values", {}).items():
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task_summary["metricTotals"][metric_id] = task_summary["metricTotals"].get(metric_id, 0) + value
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archive = {
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"schemaVersion": SCHEMA_VERSION,
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"month": f"{year:04d}-{month:02d}",
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"rebuiltAt": now_iso(),
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"tasks": summaries,
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}
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self._atomic_write(self.archive_dir / str(year) / f"{year:04d}-{month:02d}.json", archive)
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return archive
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def close_day(self, logical_date: date) -> None:
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with self._lock:
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path = self._daily_path(logical_date)
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daily = self._read(path, {
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"schemaVersion": SCHEMA_VERSION,
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"date": logical_date.isoformat(),
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"version": 1,
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"closedAt": None,
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"records": {},
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})
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if not daily.get("closedAt"):
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daily["closedAt"] = now_iso()
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daily["version"] += 1
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self._atomic_write(path, daily)
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self._rebuild_month(logical_date.year, logical_date.month)
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def close_missed_days(self, today: date | None = None) -> int:
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with self._lock:
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today = today or datetime.now(SHANGHAI).date()
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meta = self._meta()
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cursor = date.fromisoformat(meta["lastClosedDate"]) + timedelta(days=1)
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last = today - timedelta(days=1)
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count = 0
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while cursor <= last:
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self.close_day(cursor)
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meta["lastClosedDate"] = cursor.isoformat()
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cursor += timedelta(days=1)
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count += 1
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if count:
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meta["version"] += 1
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self._atomic_write(self.meta_path, meta)
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return count
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def export_all(self) -> dict[str, Any]:
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with self._lock:
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tasks = [self._read(path) for path in self.tasks_dir.glob("*.json")]
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revisions = [self._read(path) for path in self.revisions_dir.glob("*/*.json")]
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daily = [self._read(path) for path in self.daily_dir.glob("*/*.json")]
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archives = [self._read(path) for path in self.archive_dir.glob("*/*.json")]
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return {
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"schemaVersion": SCHEMA_VERSION,
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"exportedAt": now_iso(),
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"meta": self._meta(),
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"tasks": tasks,
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"revisions": revisions,
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"daily": daily,
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"archives": archives,
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}
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