"""
Standard citation handler - the original implementation.
"""

from datetime import datetime, timezone
from typing import Any, Dict, List, Union

from .base_citation_handler import BaseCitationHandler


class StandardCitationHandler(BaseCitationHandler):
    """Standard citation handler with detailed analysis."""

    def analyze_initial(
        self, query: str, search_results: Union[str, List[Dict]]
    ) -> Dict[str, Any]:
        documents = self._create_documents(search_results)
        formatted_sources = self._format_sources(documents)
        current_timestamp = datetime.now(timezone.utc).strftime(
            "%Y-%m-%d %H:%M"
        )

        output_prefix = self._get_output_instruction_prefix()

        prompt = f"""{output_prefix}Analyze the following information concerning the question and include citations using numbers in square brackets [1], [2], etc. When citing, use the source number provided at the start of each source.

Question: {query}

Sources:
{formatted_sources}

Current time is {current_timestamp} UTC for verifying temporal references in sources.

Provide a detailed analysis with citations. Do not create the bibliography, it will be provided automatically.  Never make up sources. Never write or create urls. Only write text relevant to the question. Example format: "According to the research [1], ..."
"""

        response = self.llm.invoke(prompt)
        if not isinstance(response, str):
            response = response.content
        return {"content": response, "documents": documents}

    def analyze_followup(
        self,
        question: str,
        search_results: Union[str, List[Dict]],
        previous_knowledge: str,
        nr_of_links: int,
    ) -> Dict[str, Any]:
        """Process follow-up analysis with citations."""
        documents = self._create_documents(
            search_results, nr_of_links=nr_of_links
        )
        formatted_sources = self._format_sources(documents)
        # Add fact-checking step
        fact_check_prompt = f"""Analyze these sources for factual consistency:
1. Cross-reference major claims between sources
2. Identify and flag any contradictions
3. Verify basic facts (dates, company names, ownership)
4. Note when sources disagree

Previous Knowledge:
{previous_knowledge}

New Sources:
{formatted_sources}

        Return any inconsistencies or conflicts found."""
        if self.is_fact_checking_enabled():
            fact_check_response = self.llm.invoke(fact_check_prompt).content

        else:
            fact_check_response = ""

        current_timestamp = datetime.now(timezone.utc).strftime(
            "%Y-%m-%d %H:%M"
        )

        output_prefix = self._get_output_instruction_prefix()

        prompt = f"""{output_prefix}Using the previous knowledge and new sources, answer the question. Include citations using numbers in square brackets [1], [2], etc. When citing, use the source number provided at the start of each source. Reflect information from sources critically.

Previous Knowledge:
{previous_knowledge}

Question: {question}

New Sources:
{formatted_sources}

Current time is {current_timestamp} UTC for verifying temporal references in sources.

Reflect information from sources critically based on: {fact_check_response}. Never invent sources.
Provide a detailed answer with citations.  Example format: "According to [1], ..." """

        response = self.llm.invoke(prompt)

        return {"content": response.content, "documents": documents}
