from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
from tradingagents.agents.analysts._claude_agent_runner import run_sdk_analyst
from tradingagents.agents.utils.agent_utils import (
    build_instrument_context,
    get_global_news,
    get_language_instruction,
    get_news,
)
from tradingagents.dataflows.config import get_config
from tradingagents.llm_clients.claude_agent_client import ChatClaudeAgent


def create_news_analyst(llm):
    def news_analyst_node(state):
        current_date = state["trade_date"]
        instrument_context = build_instrument_context(state["company_of_interest"])

        tools = [
            get_news,
            get_global_news,
        ]

        system_message = (
            "You are a news researcher tasked with analyzing recent news and trends over the past week. Please write a comprehensive report of the current state of the world that is relevant for trading and macroeconomics. Use the available tools: get_news(query, start_date, end_date) for company-specific or targeted news searches, and get_global_news(curr_date, look_back_days, limit) for broader macroeconomic news. Provide specific, actionable insights with supporting evidence to help traders make informed decisions."
            + """ Make sure to append a Markdown table at the end of the report to organize key points in the report, organized and easy to read."""
            + get_language_instruction()
        )

        prompt = ChatPromptTemplate.from_messages(
            [
                (
                    "system",
                    "You are a helpful AI assistant, collaborating with other assistants."
                    " Use the provided tools to progress towards answering the question."
                    " If you are unable to fully answer, that's OK; another assistant with different tools"
                    " will help where you left off. Execute what you can to make progress."
                    " If you or any other assistant has the FINAL TRANSACTION PROPOSAL: **BUY/HOLD/SELL** or deliverable,"
                    " prefix your response with FINAL TRANSACTION PROPOSAL: **BUY/HOLD/SELL** so the team knows to stop."
                    " You have access to the following tools: {tool_names}.\n{system_message}"
                    "For your reference, the current date is {current_date}. {instrument_context}",
                ),
                MessagesPlaceholder(variable_name="messages"),
            ]
        )

        prompt = prompt.partial(system_message=system_message)
        prompt = prompt.partial(tool_names=", ".join([tool.name for tool in tools]))
        prompt = prompt.partial(current_date=current_date)
        prompt = prompt.partial(instrument_context=instrument_context)

        if isinstance(llm, ChatClaudeAgent):
            full_system = (
                "You are a helpful AI assistant. Use the provided tools to progress towards "
                "producing the requested report. "
                f"You have access to the following tools: {', '.join(t.name for t in tools)}. "
                f"For your reference, the current date is {current_date}. {instrument_context}\n\n"
                f"{system_message}"
            )
            return run_sdk_analyst(
                llm=llm,
                state=state,
                system_prompt=full_system,
                lc_tools=tools,
                server_name="news_analyst",
                report_field="news_report",
            )

        chain = prompt | llm.bind_tools(tools)
        result = chain.invoke(state["messages"])

        report = ""

        if len(result.tool_calls) == 0:
            report = result.content

        return {
            "messages": [result],
            "news_report": report,
        }

    return news_analyst_node