from langchain_core.messages import HumanMessage, RemoveMessage

# Import tools from separate utility files
from tradingagents.agents.utils.core_stock_tools import (
    get_stock_data
)
from tradingagents.agents.utils.technical_indicators_tools import (
    get_indicators
)
from tradingagents.agents.utils.fundamental_data_tools import (
    get_fundamentals,
    get_balance_sheet,
    get_cashflow,
    get_income_statement
)
from tradingagents.agents.utils.news_data_tools import (
    get_news,
    get_insider_transactions,
    get_global_news
)


def build_instrument_context(ticker: str) -> str:
    """Describe the exact instrument so agents avoid cross-exchange symbol mixups."""
    return (
        f"The exact listed instrument to analyze is `{ticker}`. "
        "Use this exact ticker in every tool call, report, and recommendation. "
        "If it includes an exchange suffix such as `.TO`, `.L`, `.HK`, or `.T`, preserve that suffix and do not mix in companies from other exchanges that share the same root symbol. "
        "If it does not include a suffix, do not invent one."
    )

def create_msg_delete():
    def delete_messages(state):
        """Clear messages and add placeholder for Anthropic compatibility"""
        messages = state["messages"]

        # Remove all messages
        removal_operations = [RemoveMessage(id=m.id) for m in messages]

        # Add a minimal placeholder message
        placeholder = HumanMessage(content="Continue")

        return {"messages": removal_operations + [placeholder]}

    return delete_messages