from typing import Any, Literal, NotRequired

from pydantic import BaseModel, Field
from typing_extensions import TypedDict


class UserInput(BaseModel):
    """Basic user input for the agent."""

    user_message: str = Field(
        description="User message to the AI agent.",
        examples=["Hello, I want to report."],
    )
    thread_id: str | None = Field(
        description="Thread ID to persist and continue a multi-turn conversation.",
        default=None,
        examples=["847c6285-8fc9-4560-a83f-4e628xx09254"],
    )


class SingleResponse(BaseModel):
    """Basic user input for the agent."""

    response_message: str = Field(
        description="Response content based on user input.",
        examples=["Hello, I am a bot."],
    )
    responder: Literal["human", "ai", "tool", "custom"] = Field(
        description="Generator of response.",
        examples=["human", "ai", "tool", "custom"],
    )
    thread_id: str | None = Field(
        description="Thread ID to persist and continue a multi-turn conversation.",
        default=None,
        examples=["847c6285-8fc9-4560-a83f-4e628xx09254"],
    )


class ToolCall(TypedDict):
    """Represents a request to call a tool."""

    name: str
    """The name of the tool to be called."""
    args: dict[str, Any]
    """The arguments to the tool call."""
    id: str | None
    """An identifier associated with the tool call."""
    type: NotRequired[Literal["tool_call"]]


class Chat(BaseModel):
    """Message in a chat."""

    type: Literal["human", "ai", "tool", "custom"] = Field(
        description="Role of the message.",
        examples=["human", "ai", "tool", "custom"],
    )
    content: str = Field(
        description="Content of the message.",
        examples=["Hello, world!"],
    )
    tool_calls: list[ToolCall] = Field(
        description="Tool calls in the message.",
        default=[],
    )
    tool_call_id: str | None = Field(
        description="Tool call that this message is responding to.",
        default=None,
        examples=["call_Jja7J89XsjrOLA5r!MEOW!SL"],
    )
    run_id: str | None = Field(
        description="Run ID of the message.",
        default=None,
        examples=["847c6285-8fc9-4560-a83f-4e6285809254"],
    )
    response_metadata: dict[str, Any] = Field(
        description="Response metadata. For example: response headers, logprobs, token counts.",
        default={},
    )
    custom_data: dict[str, Any] = Field(
        description="Custom message data.",
        default={},
    )