"""项目待办模块单测(cloud/todos.py)。

不跑真实模型、不联网：临时 SQLite 文件 + 模块函数直调。
覆盖：建表幂等、创建校验与默认值、状态五态与完成时间、
PATCH 只改给定字段、过滤（状态/q）、排序追加、硬删除、
跨项目隔离（模块层按 project_id 查，服务端层再做 404）。
"""

import os
import sqlite3
import sys
import tempfile
import unittest
from pathlib import Path

try:
    from cloud.todos import (
        create_todo,
        delete_todo,
        ensure_todos_table,
        get_todo,
        list_todos,
        update_todo,
    )
except ImportError:  # discover -s cloud/tests 时把项目根目录补进 sys.path
    sys.path.insert(0, str(Path(__file__).resolve().parents[2]))
    from cloud.todos import (
        create_todo,
        delete_todo,
        ensure_todos_table,
        get_todo,
        list_todos,
        update_todo,
    )


class TodosTestCase(unittest.TestCase):
    def setUp(self):
        self.tmp = tempfile.TemporaryDirectory()
        self.db_path = os.path.join(self.tmp.name, "control.db")
        self.conn = sqlite3.connect(self.db_path)
        self.conn.row_factory = sqlite3.Row
        ensure_todos_table(self.conn)
        self.conn.commit()
        self.now = 1700000000.0
        self.project = "proj-1"

    def tearDown(self):
        self.conn.close()
        self.tmp.cleanup()

    def _make(self, title="写文档", **kw):
        kw.setdefault("project_id", self.project)
        return create_todo(
            self.conn, kw.pop("project_id"), "user-1", title,
            now=self.now, **kw)

    def test_ensure_is_idempotent(self):
        ensure_todos_table(self.conn)
        ensure_todos_table(self.conn)
        self.conn.commit()
        rows = self.conn.execute(
            "SELECT name FROM sqlite_master WHERE type = 'table'"
            " AND name = 'todos'").fetchall()
        self.assertEqual(len(rows), 1)

    def test_create_defaults_and_validation(self):
        t = self._make()
        self.assertEqual(t["status"], "pending")
        self.assertEqual(t["priority"], "medium")
        self.assertEqual(t["description"], "")
        self.assertIsNone(t["task_id"])
        self.assertIsNone(t["due_at"])
        self.assertIsNone(t["completed_at"])
        self.assertEqual(t["sort_order"], 0)
        with self.assertRaises(ValueError):
            self._make(title="  ")
        with self.assertRaises(ValueError):
            self._make(status="done")
        with self.assertRaises(ValueError):
            self._make(priority="urgent")
        with self.assertRaises(ValueError):
            self._make(title="x" * 501)

    def test_sort_order_appends(self):
        a = self._make("第一")
        b = self._make("第二")
        c = self._make("第三", sort_order=10)
        self.assertEqual((a["sort_order"], b["sort_order"],
                          c["sort_order"]), (0, 1, 10))
        titles = [t["title"] for t in list_todos(self.conn, self.project)]
        self.assertEqual(titles, ["第一", "第二", "第三"])

    def test_status_completed_sets_and_clears_completed_at(self):
        t = self._make()
        done = update_todo(self.conn, t["id"], {"status": "completed"})
        self.assertIsNotNone(done["completed_at"])
        back = update_todo(self.conn, t["id"], {"status": "in_progress"})
        self.assertIsNone(back["completed_at"])
        self.assertEqual(back["status"], "in_progress")

    def test_update_only_given_fields(self):
        t = self._make("原标题", description="原说明",
                       priority="low", task_id="task-1")
        u = update_todo(self.conn, t["id"], {"title": "新标题"})
        self.assertEqual(u["title"], "新标题")
        self.assertEqual(u["description"], "原说明")
        self.assertEqual(u["priority"], "low")
        self.assertEqual(u["task_id"], "task-1")
        self.assertIsNone(update_todo(self.conn, "nope", {"title": "x"}))

    def test_due_at_ms_tolerance(self):
        t = self._make(due_at=1700000000000)
        self.assertEqual(t["due_at"], 1700000000.0)
        with self.assertRaises(ValueError):
            self._make(due_at="明天")

    def test_list_filters(self):
        self._make("写文档", status="completed")
        self._make("修 bug", status="in_progress")
        self._make("写测试", status="pending")
        done = list_todos(self.conn, self.project, status="completed")
        self.assertEqual([t["title"] for t in done], ["写文档"])
        q = list_todos(self.conn, self.project, q="写")
        self.assertEqual(sorted(t["title"] for t in q), ["写文档", "写测试"])
        other = list_todos(self.conn, "proj-2")
        self.assertEqual(other, [])

    def test_delete(self):
        t = self._make()
        deleted = delete_todo(self.conn, t["id"])
        self.assertEqual(deleted["id"], t["id"])
        self.assertIsNone(get_todo(self.conn, t["id"]))
        self.assertIsNone(delete_todo(self.conn, t["id"]))


if __name__ == "__main__":
    unittest.main()