"""
Extended tests for utilities/search_utilities.py

Tests cover edge cases and scenarios not covered in the base test file:
- Phase parsing for Follow-up and Sub-query formats
- Invalid phase format handling
- Source aggregation behavior
- Edge cases in format_findings
"""


class TestFormatFindingsPhaseParsingFollowUp:
    """Tests for Follow-up Iteration phase parsing in format_findings."""

    def test_followup_iteration_format_basic(self):
        """Test Follow-up Iteration X.Y format is parsed correctly."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration 1.1",
                "content": "First follow-up content",
                "search_results": [],
            }
        ]
        questions = {1: ["First question", "Second question"]}

        result = format_findings(findings, "Summary", questions)

        # The question should be displayed
        assert "First question" in result
        assert "First follow-up content" in result

    def test_followup_iteration_second_question(self):
        """Test Follow-up Iteration X.2 shows second question."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration 1.2",
                "content": "Second follow-up",
                "search_results": [],
            }
        ]
        questions = {1: ["First question", "Second question", "Third question"]}

        result = format_findings(findings, "Summary", questions)

        assert "Second question" in result

    def test_followup_iteration_multiple_iterations(self):
        """Test Follow-up Iteration across multiple iterations."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration 1.1",
                "content": "Iter 1 Q1",
                "search_results": [],
            },
            {
                "phase": "Follow-up Iteration 2.1",
                "content": "Iter 2 Q1",
                "search_results": [],
            },
        ]
        questions = {
            1: ["Iteration 1 Question 1"],
            2: ["Iteration 2 Question 1"],
        }

        result = format_findings(findings, "Summary", questions)

        assert "Iteration 1 Question 1" in result
        assert "Iteration 2 Question 1" in result

    def test_followup_iteration_missing_question_index(self):
        """Test Follow-up Iteration with question index out of bounds."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration 1.5",  # Index 5 doesn't exist
                "content": "Out of bounds",
                "search_results": [],
            }
        ]
        questions = {1: ["Only one question"]}

        # Should not raise, just skip showing question
        result = format_findings(findings, "Summary", questions)

        assert "Out of bounds" in result
        # Should not crash

    def test_followup_iteration_missing_iteration(self):
        """Test Follow-up Iteration with iteration not in questions dict."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration 3.1",  # Iteration 3 doesn't exist
                "content": "No matching iteration",
                "search_results": [],
            }
        ]
        questions = {1: ["Question 1"]}

        result = format_findings(findings, "Summary", questions)

        assert "No matching iteration" in result


class TestFormatFindingsPhaseParsingSubQuery:
    """Tests for Sub-query phase parsing in format_findings."""

    def test_subquery_format_basic(self):
        """Test Sub-query X format is parsed correctly."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Sub-query 1",
                "content": "Sub-query content",
                "search_results": [],
            }
        ]
        # IterDRAG stores sub-queries in iteration 0
        questions = {0: ["First sub-query", "Second sub-query"]}

        result = format_findings(findings, "Summary", questions)

        assert "First sub-query" in result
        assert "Sub-query content" in result

    def test_subquery_second_question(self):
        """Test Sub-query 2 shows second question."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Sub-query 2",
                "content": "Second sub-query content",
                "search_results": [],
            }
        ]
        questions = {0: ["First", "Second", "Third"]}

        result = format_findings(findings, "Summary", questions)

        assert "Second" in result

    def test_subquery_out_of_bounds(self):
        """Test Sub-query with index out of bounds."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Sub-query 10",  # Index 10 doesn't exist
                "content": "Out of bounds sub-query",
                "search_results": [],
            }
        ]
        questions = {0: ["Only one"]}

        result = format_findings(findings, "Summary", questions)

        assert "Out of bounds sub-query" in result

    def test_subquery_no_iteration_zero(self):
        """Test Sub-query when iteration 0 doesn't exist."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Sub-query 1",
                "content": "Sub-query content",
                "search_results": [],
            }
        ]
        questions = {1: ["Not iteration zero"]}

        result = format_findings(findings, "Summary", questions)

        assert "Sub-query content" in result


class TestFormatFindingsInvalidPhaseFormat:
    """Tests for invalid phase format handling in format_findings."""

    def test_invalid_followup_format_non_numeric(self):
        """Test Follow-up Iteration with non-numeric parts."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration abc.def",
                "content": "Invalid format content",
                "search_results": [],
            }
        ]
        questions = {1: ["Question 1"]}

        result = format_findings(findings, "Summary", questions)

        assert "Invalid format content" in result

    def test_invalid_followup_format_missing_dot(self):
        """Test Follow-up Iteration without dot separator."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration 1",  # Missing .X
                "content": "Missing dot content",
                "search_results": [],
            }
        ]
        questions = {1: ["Question 1"]}

        result = format_findings(findings, "Summary", questions)

        assert "Missing dot content" in result

    def test_invalid_subquery_format_non_numeric(self):
        """Test Sub-query with non-numeric index."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Sub-query abc",
                "content": "Invalid sub-query content",
                "search_results": [],
            }
        ]
        questions = {0: ["Question 1"]}

        result = format_findings(findings, "Summary", questions)

        assert "Invalid sub-query content" in result

    def test_phase_with_special_characters(self):
        """Test phase with special characters."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Phase: Special <chars>",
                "content": "Special content",
                "search_results": [],
            }
        ]

        result = format_findings(findings, "Summary", {})

        assert "Special content" in result
        assert "Phase: Special <chars>" in result

    def test_phase_none_value(self):
        """Test finding with None phase."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": None,
                "content": "Content with None phase",
                "search_results": [],
            }
        ]

        result = format_findings(findings, "Summary", {})

        # Should use "Unknown Phase" default
        assert "Content with None phase" in result


class TestFormatFindingsSourceAggregation:
    """Tests for source aggregation in format_findings."""

    def test_aggregates_sources_from_multiple_findings(self):
        """Test sources are aggregated from multiple findings."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Search 1",
                "content": "Content 1",
                "search_results": [
                    {"title": "Source A", "link": "https://a.com", "index": "1"}
                ],
            },
            {
                "phase": "Search 2",
                "content": "Content 2",
                "search_results": [
                    {"title": "Source B", "link": "https://b.com", "index": "2"}
                ],
            },
        ]

        result = format_findings(findings, "Summary", {})

        assert "ALL SOURCES" in result
        assert "https://a.com" in result
        assert "https://b.com" in result

    def test_deduplicates_sources(self):
        """Test duplicate sources are deduplicated."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Search 1",
                "content": "Content 1",
                "search_results": [
                    {"title": "Same", "link": "https://same.com", "index": "1"}
                ],
            },
            {
                "phase": "Search 2",
                "content": "Content 2",
                "search_results": [
                    {"title": "Same", "link": "https://same.com", "index": "2"}
                ],
            },
        ]

        result = format_findings(findings, "Summary", {})

        # URL should only appear once in the ALL SOURCES section
        all_sources_section = (
            result.split("ALL SOURCES")[1] if "ALL SOURCES" in result else ""
        )
        assert all_sources_section.count("https://same.com") == 1

    def test_handles_finding_without_search_results(self):
        """Test findings without search_results key."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Search",
                "content": "Content without search results",
                # No search_results key
            }
        ]

        result = format_findings(findings, "Summary", {})

        assert "Content without search results" in result

    def test_handles_empty_search_results(self):
        """Test findings with empty search_results list."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Search",
                "content": "Content with empty results",
                "search_results": [],
            }
        ]

        result = format_findings(findings, "Summary", {})

        assert "Content with empty results" in result


class TestFormatFindingsQuestionInFinding:
    """Tests for question field in finding itself."""

    def test_displays_question_from_finding(self):
        """Test question from finding is displayed if not from phase."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Custom Phase",
                "content": "Content here",
                "question": "What is the meaning of life?",
                "search_results": [],
            }
        ]

        result = format_findings(findings, "Summary", {})

        assert "What is the meaning of life?" in result
        assert "SEARCH QUESTION" in result

    def test_phase_question_overrides_finding_question(self):
        """Test question from phase takes precedence over finding question."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Follow-up Iteration 1.1",
                "content": "Content",
                "question": "Question from finding",
                "search_results": [],
            }
        ]
        questions = {1: ["Question from iteration"]}

        result = format_findings(findings, "Summary", questions)

        # Should show iteration question, not finding question
        assert "Question from iteration" in result

    def test_empty_question_field_ignored(self):
        """Test empty question field is ignored."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "Search",
                "content": "Content",
                "question": "",
                "search_results": [],
            }
        ]

        result = format_findings(findings, "Summary", {})

        assert "SEARCH QUESTION" not in result


class TestFormatFindingsEdgeCases:
    """Tests for edge cases in format_findings."""

    def test_empty_synthesized_content(self):
        """Test with empty synthesized content."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        result = format_findings([], "", {})

        # Should not crash with empty content
        assert result is not None

    def test_synthesized_content_with_newlines(self):
        """Test synthesized content with newlines is preserved."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        content = "Line 1\n\nLine 2\n\nLine 3"
        result = format_findings([], content, {})

        assert "Line 1" in result
        assert "Line 2" in result
        assert "Line 3" in result

    def test_large_number_of_findings(self):
        """Test with large number of findings."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": f"Phase {i}",
                "content": f"Content {i}",
                "search_results": [],
            }
            for i in range(100)
        ]

        result = format_findings(findings, "Summary", {})

        assert "Phase 0" in result
        assert "Phase 99" in result
        assert "Content 0" in result
        assert "Content 99" in result

    def test_findings_with_all_none_values(self):
        """Test findings with all None values use defaults."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": None,
                "content": None,
                "search_results": None,
            }
        ]

        result = format_findings(findings, "Summary", {})

        assert "Unknown Phase" in result or result is not None

    def test_unicode_content_handling(self):
        """Test unicode content is handled correctly."""
        from local_deep_research.utilities.search_utilities import (
            format_findings,
        )

        findings = [
            {
                "phase": "搜索结果",
                "content": "日本語テキスト с русским 🎉",
                "search_results": [
                    {
                        "title": "日本語",
                        "link": "https://example.com",
                        "index": "1",
                    }
                ],
            }
        ]

        result = format_findings(findings, "概要 Summary", {})

        assert "日本語テキスト" in result
        assert "🎉" in result


class TestExtractLinksEdgeCases:
    """Additional edge case tests for extract_links_from_search_results."""

    def test_handles_integer_index(self):
        """Test handles integer index instead of string."""
        from local_deep_research.utilities.search_utilities import (
            extract_links_from_search_results,
        )

        results = [
            {
                "title": "Test",
                "link": "https://example.com",
                "index": 1,  # Integer instead of string
            }
        ]

        # This might fail if strip() is called on integer
        # The function should handle this gracefully
        try:
            links = extract_links_from_search_results(results)
            # If it succeeds, check the result
            assert len(links) >= 0
        except Exception:
            # If it fails, that's also acceptable behavior
            pass

    def test_handles_mixed_key_formats(self):
        """Test handles results with different key formats."""
        from local_deep_research.utilities.search_utilities import (
            extract_links_from_search_results,
        )

        results = [
            {"title": "Normal", "link": "https://normal.com", "index": "1"},
            {
                "title": "  Spaces  ",
                "link": "  https://spaces.com  ",
                "index": "2",
            },
        ]

        links = extract_links_from_search_results(results)

        assert len(links) == 2
        assert links[1]["title"] == "Spaces"
        assert links[1]["url"] == "https://spaces.com"


class TestFormatLinksEdgeCases:
    """Additional edge case tests for format_links_to_markdown."""

    def test_handles_untitled_default(self):
        """Test handles links without title using default."""
        from local_deep_research.utilities.search_utilities import (
            format_links_to_markdown,
        )

        links = [
            {"url": "https://example.com", "index": "1"}
            # No title
        ]

        result = format_links_to_markdown(links)

        assert "Untitled" in result or "https://example.com" in result

    def test_multiple_indices_same_url(self):
        """Test multiple indices for same URL are aggregated."""
        from local_deep_research.utilities.search_utilities import (
            format_links_to_markdown,
        )

        links = [
            {"title": "Same", "url": "https://same.com", "index": "1"},
            {"title": "Same", "url": "https://same.com", "index": "3"},
            {"title": "Same", "url": "https://same.com", "index": "5"},
        ]

        result = format_links_to_markdown(links)

        # URL should appear once with aggregated indices
        assert result.count("https://same.com") == 1
        # Should show multiple indices
        assert "1" in result
        assert "3" in result
        assert "5" in result