#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
-------------------------------------------------------------------------
This file is part of the RAGSDK project.
Copyright (c) 2025 Huawei Technologies Co.,Ltd.

RAGSDK is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

         http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
-------------------------------------------------------------------------
"""

import unittest
from unittest.mock import patch

from langchain_core.prompts import PromptTemplate

from mx_rag.llm import Text2TextLLM
from mx_rag.summary.summary import Summary


class TestSummary(unittest.TestCase):
    @classmethod
    def setup_class(cls):
        pass

    @classmethod
    def teardown_class(cls):
        pass

    def setup_method(self, method):
        self.llm = Text2TextLLM(base_url="http://127.0.0.1:1025/v1/chat/completions", model_name="qianwen-7b")

    def teardown_method(self, method):
        pass

    def mock_summary(self, text: str, prompt: PromptTemplate) -> str:
        return text[0:len(text) - 1]

    def test_summarize_none_str(self):
        su = Summary(llm=self.llm)
        res = True
        try:
            su.summarize([""])
        except Exception as e:
            res = False

        self.assertFalse(res)

    @patch("mx_rag.summary.summary.Summary._summarize")
    def test_summarize(self, summary_mock):
        summary_mock.side_effect = self.mock_summary
        su = Summary(llm=self.llm)
        res = su.summarize(["aaa", "1b2", "2c3", "ddd"], not_summarize_threshold=2)
        self.assertEqual(len(res), len(res))
        self.assertEqual(res[1], "1b")
        self.assertEqual(res[2], "2c")

    def test_split_summary_by_threshold(self):
        su = Summary(llm=self.llm)
        res = su._split_summary_by_threshold(["aaa"], merge_threshold=1024)
        self.assertSequenceEqual(res, [(0, 0)])

        res = su._split_summary_by_threshold(["aaa", "1b2"], merge_threshold=1024)
        self.assertSequenceEqual(res, [(0, 1)])

        res = su._split_summary_by_threshold(["aaa", "b" * 1000, "2c3" * 20], merge_threshold=1024)
        self.assertSequenceEqual(res, [(0, 1), (2, 2)])

        res = su._split_summary_by_threshold(["aaa", "2" * 1020, "2c3", "ddd", "67"], merge_threshold=1024)
        self.assertSequenceEqual(res, [(0, 1), (2, 4)])

        res = su._split_summary_by_threshold(["11" * 1024, "22" * 1024, "111111" * 1024, "33", "33"],
                                             merge_threshold=1024)
        self.assertSequenceEqual(res, [(0, 0), (1, 1), (2, 2), (3, 4)])

        res = su._split_summary_by_threshold(["11111" * 1024, "33", "33"], merge_threshold=1024)
        self.assertSequenceEqual(res, [(0, 0), (1, 2)])

    @patch("mx_rag.summary.summary.Summary._summarize")
    def test_merge_text_summarize(self, summary_mock):
        summary_mock.side_effect = self.mock_summary
        su = Summary(llm=self.llm)

        res = su.merge_text_summarize(["aaa"], merge_threshold=1024, not_summarize_threshold=4)
        self.assertSequenceEqual(res, "aaa")

        res = su.merge_text_summarize(["aaa"], merge_threshold=1024, not_summarize_threshold=2)
        self.assertSequenceEqual(res, "aa")

        res = su.merge_text_summarize(["aa", "eb2", "hc34"], merge_threshold=1024, not_summarize_threshold=2)
        self.assertSequenceEqual(res, "aa\n\neb2\n\nhc3")