"""commands/enhancement.py 单元测试 — cmd_enhancement。

运行: python tests/unit/test_enhancement.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)


class TestCmdEnhancement(unittest.TestCase):
    """cmd_enhancement 查询对象的增强实现。"""

    def test_object_not_found_raises(self):
        from sapcli.commands.enhancement import cmd_enhancement
        from sapcli.exceptions import ObjectNotFoundError

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

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

    def test_api_error_prints_failure_and_returns(self):
        """get_enhancements 抛异常时打印失败并返回。"""
        from sapcli.commands.enhancement import cmd_enhancement

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_enhancements.side_effect = Exception("network error")

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

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

    def test_no_enhancements(self):
        """无增强实现时打印提示。"""
        from sapcli.commands.enhancement import cmd_enhancement

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

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

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("未找到增强实现", printed)

    def test_with_enhancements_and_full_elements(self):
        """增强实现含完整字段（enhanced_name、elements、mode、replacing）。"""
        from sapcli.commands.enhancement import cmd_enhancement

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_enhancements.return_value = [
            {
                "name": "ZENH_TEST",
                "type": "ENHO",
                "enhanced_name": "ZCL_TEST",
                "enhanced_type": "CLAS/OC",
                "elements": [
                    {
                        "type": "METHOD", "name": "HELLO",
                        "mode": "overwrite", "replacing": "ZCL_TEST=>HELLO",
                    },
                ],
            },
        ]

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

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("ZENH_TEST", printed)
        self.assertIn("ENHO", printed)
        self.assertIn("Enhanced Object", printed)
        self.assertIn("ZCL_TEST", printed)
        self.assertIn("METHOD: HELLO", printed)
        self.assertIn("Mode: overwrite", printed)
        self.assertIn("Replacing: ZCL_TEST=>HELLO", printed)
        self.assertIn("Element 1", printed)

    def test_element_label_name_only(self):
        """element 只有 name 时 label 为 name。"""
        from sapcli.commands.enhancement import cmd_enhancement

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_enhancements.return_value = [
            {
                "name": "ZENH1", "elements": [{"name": "ONLY_NAME"}],
            },
        ]

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

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

    def test_element_label_type_only(self):
        """element 只有 type 时 label 为 type。"""
        from sapcli.commands.enhancement import cmd_enhancement

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_enhancements.return_value = [
            {
                "name": "ZENH1", "elements": [{"type": "ONLY_TYPE"}],
            },
        ]

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

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

    def test_enhancement_minimal_fields(self):
        """增强实现仅含 name（无 type/enhanced_name/elements）。"""
        from sapcli.commands.enhancement import cmd_enhancement

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_enhancements.return_value = [{"name": "ZENH_MIN"}]

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

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("ZENH_MIN", printed)
        # 默认 type 为 ENHO
        self.assertIn("ENHO", printed)
        # 无 enhanced_name 时不打印 Enhanced Object 行
        self.assertNotIn("Enhanced Object", printed)

    def test_multiple_enhancements_count(self):
        """多个增强实现时打印数量。"""
        from sapcli.commands.enhancement import cmd_enhancement

        client = MagicMock()
        client.object_exists.return_value = True
        client.get_enhancements.return_value = [
            {"name": "ZENH1", "elements": []},
            {"name": "ZENH2", "elements": []},
        ]

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

        printed = " ".join(str(c) for c, _ in mock_print.call_args_list)
        self.assertIn("2", printed)


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