from typing import Literal

from langchain.tools import tool
from pydantic import BaseModel, Field


class TicketSummaryInput(BaseModel):
    """Input fields for a support-ticket summary."""

    title: str = Field(description="Short title from the support queue")
    priority: Literal["low", "normal", "high"] = Field(
        default="normal",
        description="Escalation priority for the routing summary",
    )
    requester: str = Field(description="Name or team that opened the ticket")