"""
Extended tests for StandardKnowledge - Standard knowledge generation.

Tests cover:
- Knowledge generation with various inputs
- Sub-knowledge generation
- Knowledge compression
- Citation formatting
- Error handling
"""

from datetime import datetime, UTC


class TestKnowledgeGenerationBasics:
    """Tests for basic knowledge generation."""

    def test_prompt_includes_query(self):
        """Prompt should include the query."""
        query = "What is machine learning?"
        prompt = f"Query: {query}"

        assert "What is machine learning?" in prompt

    def test_prompt_includes_current_time(self):
        """Prompt should include current time."""
        now = datetime.now(UTC)
        current_time = now.strftime("%Y-%m-%d")

        prompt = f"Current Time: {current_time}"

        assert current_time in prompt

    def test_prompt_includes_context(self):
        """Prompt should include context if provided."""
        context = "Previous research showed X"
        prompt = f"Context: {context}"

        assert "Previous research showed X" in prompt

    def test_prompt_includes_current_knowledge(self):
        """Prompt should include current knowledge."""
        current_knowledge = "We already know Y"
        prompt = f"Current Knowledge: {current_knowledge}"

        assert "We already know Y" in prompt


class TestKnowledgeGenerationWithQuestions:
    """Tests for knowledge generation with questions."""

    def test_prompt_with_questions(self):
        """Prompt should include questions when provided."""
        questions = ["Q1?", "Q2?", "Q3?"]
        prompt = f"Questions: {questions}"

        assert "Q1?" in prompt
        assert "Q2?" in prompt

    def test_prompt_without_questions(self):
        """Prompt should adapt when no questions provided."""
        questions = None

        if questions:
            prompt_part = f"Questions: {questions}"
        else:
            prompt_part = "No specific questions"

        assert "No specific questions" in prompt_part
        assert questions is None

    def test_prompt_addresses_each_question(self):
        """Generated knowledge should address each question."""
        questions = ["What is X?", "How does Y work?"]

        requirements = """Generate detailed knowledge that:
1. Directly answers the query
2. Addresses each question
3. Includes relevant facts and details"""

        assert "Addresses each question" in requirements
        assert len(questions) == 2


class TestSubKnowledgeGeneration:
    """Tests for sub-knowledge generation."""

    def test_sub_knowledge_prompt_structure(self):
        """Sub-knowledge prompt should have correct structure."""
        sub_query = "What is gradient descent?"
        context = "In the context of neural networks"

        prompt = f"""Generate comprehensive knowledge to answer this sub-question:

Sub-question: {sub_query}

{context}
"""

        assert "What is gradient descent?" in prompt
        assert "neural networks" in prompt

    def test_sub_knowledge_empty_context(self):
        """Should handle empty context."""
        sub_query = "What is X?"
        context = ""

        prompt = f"""Sub-question: {sub_query}

{context}
"""

        assert "What is X?" in prompt


class TestKnowledgeCompression:
    """Tests for knowledge compression."""

    def test_compression_prompt_includes_query(self):
        """Compression prompt should include query."""
        query = "machine learning"
        current_knowledge = "Lots of text..."

        prompt = f"""Compress the following accumulated knowledge relevant to the query '{query}'.
Retain the key facts, findings, and citations. Remove redundancy.

Accumulated Knowledge:
{current_knowledge}

Compressed Knowledge:"""

        assert "machine learning" in prompt
        assert "Lots of text..." in prompt

    def test_compression_failure_returns_original(self):
        """On compression failure, should return original."""
        original = "Original knowledge"

        try:
            raise Exception("Compression error")
        except Exception:
            result = original

        assert result == original

    def test_compression_log_format(self):
        """Should log compression details."""
        query = "test"
        original_length = 10000
        compressed_length = 5000

        log_message = f"Compressing knowledge for query: {query}. Original length: {original_length}, compressed to: {compressed_length}"
        assert "test" in log_message
        assert "10000" in log_message
        assert "5000" in log_message


class TestCitationFormatting:
    """Tests for citation formatting."""

    def test_format_citations_ieee_style(self):
        """Should format citations in IEEE style."""
        links = [
            "http://example1.com",
            "http://example2.com",
            "http://example3.com",
        ]

        citations = []
        for i, link in enumerate(links, 1):
            citations.append(f"[{i}] {link}")

        formatted = "\n".join(citations)

        assert "[1] http://example1.com" in formatted
        assert "[2] http://example2.com" in formatted

    def test_format_empty_citations(self):
        """Should handle empty links list."""
        links = []

        if not links:
            formatted = ""
        else:
            formatted = "citations"

        assert formatted == ""

    def test_citation_numbering_starts_at_1(self):
        """Citation numbering should start at 1."""
        links = ["link1"]

        citations = []
        for i, link in enumerate(links, 1):
            citations.append(f"[{i}] {link}")

        assert "[1]" in citations[0]
        assert "[0]" not in citations[0]


class TestGenerateMethod:
    """Tests for the simple generate method."""

    def test_generate_calls_generate_knowledge(self):
        """Generate should delegate to generate_knowledge."""
        query = "test query"
        context = "test context"

        # Simulate delegation
        result = {"query": query, "context": context}

        assert result["query"] == "test query"
        assert result["context"] == "test context"


class TestKnowledgeRequirements:
    """Tests for knowledge generation requirements."""

    def test_requirements_directly_answers(self):
        """Knowledge should directly answer the query."""
        requirements = [
            "Directly answers the query",
            "Includes relevant facts and details",
            "Is up-to-date with current information",
            "Synthesizes information from multiple sources",
        ]

        assert "Directly answers the query" in requirements

    def test_requirements_formatting(self):
        """Knowledge should be well-structured."""
        format_requirement = (
            "Format your response as a well-structured paragraph."
        )

        assert "well-structured" in format_requirement


class TestErrorHandling:
    """Tests for error handling."""

    def test_sub_knowledge_error_returns_empty(self):
        """Error in sub-knowledge should return empty string."""
        try:
            raise Exception("LLM error")
        except Exception:
            result = ""

        assert result == ""

    def test_compression_error_returns_original(self):
        """Error in compression should return original knowledge."""
        original_knowledge = "Original content"

        try:
            raise Exception("Compression error")
        except Exception:
            result = original_knowledge

        assert result == "Original content"


class TestResponseHandling:
    """Tests for LLM response handling."""

    def test_extract_content_from_response(self):
        """Should extract content from response object."""

        class MockResponse:
            content = "Generated knowledge content"

        response = MockResponse()
        knowledge = response.content

        assert knowledge == "Generated knowledge content"

    def test_handle_string_response(self):
        """Should handle string response."""
        response = "Direct string response"

        if hasattr(response, "content"):
            knowledge = response.content
        else:
            knowledge = str(response)

        assert knowledge == "Direct string response"


class TestDateTimeHandling:
    """Tests for datetime handling."""

    def test_utc_timestamp_format(self):
        """Should format UTC timestamp correctly."""
        now = datetime.now(UTC)
        formatted = now.strftime("%Y-%m-%d")

        # Should be YYYY-MM-DD format
        assert len(formatted) == 10
        assert formatted.count("-") == 2

    def test_current_time_in_prompt(self):
        """Current time should be included in prompt."""
        current_time = "2024-01-15"

        prompt = f"Current Time: {current_time}"

        assert "2024-01-15" in prompt


class TestPromptVariations:
    """Tests for different prompt variations."""

    def test_prompt_with_all_params(self):
        """Prompt should include all parameters when provided."""
        query = "test query"
        context = "test context"
        current_knowledge = "existing knowledge"
        questions = ["Q1", "Q2"]
        current_time = "2024-01-15"

        prompt = f"""Query: {query}
Current Time: {current_time}
Context: {context}
Current Knowledge: {current_knowledge}
Questions: {questions}
"""

        assert "test query" in prompt
        assert "test context" in prompt
        assert "existing knowledge" in prompt
        assert "Q1" in prompt

    def test_prompt_minimal_params(self):
        """Prompt should work with minimal parameters."""
        query = "simple query"
        current_time = "2024-01-15"

        prompt = f"""Query: {query}
Current Time: {current_time}
"""

        assert "simple query" in prompt
        assert "2024-01-15" in prompt
