"""commands/history.py 单元测试 — cmd_history + _format_date。

运行: python tests/unit/test_history.py
"""
from __future__ import annotations

import argparse
import os
import sys
import unittest
from unittest.mock import MagicMock, patch

sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "..", "assets"))


def _args(**kwargs):
    defaults = {"type": "class", "name": "ZCL_TEST"}
    defaults.update(kwargs)
    return argparse.Namespace(**defaults)


# ═══════════════════════════════════════════
#  _format_date
# ═══════════════════════════════════════════

class TestFormatDate(unittest.TestCase):
    """_format_date 将 ISO 日期转为可读格式。"""

    def test_empty_returns_empty(self):
        from sapcli.commands.history import _format_date
        self.assertEqual(_format_date(""), "")

    def test_iso_datetime(self):
        from sapcli.commands.history import _format_date
        self.assertEqual(_format_date("2026-06-15T10:30:00"), "2026-06-15 10:30:00")

    def test_iso_with_z_suffix(self):
        from sapcli.commands.history import _format_date
        self.assertEqual(_format_date("2026-06-15T10:30:00Z"), "2026-06-15 10:30:00")

    def test_none_value(self):
        from sapcli.commands.history import _format_date
        self.assertEqual(_format_date(None), "")


# ═══════════════════════════════════════════
#  cmd_history
# ═══════════════════════════════════════════

class TestCmdHistory(unittest.TestCase):
    """cmd_history 查询对象版本历史。"""

    def test_object_not_found_raises(self):
        from sapcli.commands.history import cmd_history
        from sapcli.exceptions import ObjectNotFoundError

        client = MagicMock()
        client.object_exists.return_value = False

        with self.assertRaises(ObjectNotFoundError) as ctx:
            cmd_history(_args(), client)
        self.assertIn("ZCL_TEST", str(ctx.exception))

    def test_api_error_prints_failure_and_returns(self):
        """get_object_versions 抛异常时打印失败并返回。"""
        from sapcli.commands.history import cmd_history

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_object_versions.side_effect = Exception("server down")

        with patch("builtins.print") as mock_print:
            cmd_history(_args(), client)

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("失败", printed)

    def test_no_versions(self):
        """无版本历史时打印提示。"""
        from sapcli.commands.history import cmd_history

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_object_versions.return_value = []

        with patch("builtins.print") as mock_print:
            cmd_history(_args(), client)

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("未找到版本历史", printed)

    def test_with_versions_prints_table(self):
        """有版本时打印版本表格。"""
        from sapcli.commands.history import cmd_history

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_object_versions.return_value = [
            {
                "version": "0001", "author": "ALICE",
                "date": "2026-06-15T10:30:00", "versionTitle": "initial import",
            },
            {
                "version": "", "author": "BOB",
                "date": "", "versionTitle": "current",
            },
        ]

        with patch("builtins.print") as mock_print:
            cmd_history(_args(), client)

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("0001", printed)
        self.assertIn("ALICE", printed)
        self.assertIn("initial import", printed)
        # version 为空时回退到 "active"
        self.assertIn("active", printed)
        self.assertIn("2", printed)  # 找到 2 个版本

    def test_versions_missing_version_key(self):
        """版本记录缺 version 键时回退到 active。"""
        from sapcli.commands.history import cmd_history

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_object_versions.return_value = [
            {"author": "CAROL", "date": "2026-01-01T00:00:00", "versionTitle": "v1"},
        ]

        with patch("builtins.print") as mock_print:
            cmd_history(_args(), client)

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("active", printed)
        self.assertIn("CAROL", printed)


if __name__ == "__main__":
    unittest.main(verbosity=2)