from openai.types.responses import ResponseOutputMessage, ResponseOutputText

from cai.sdk.agents import Agent, HandoffInputData
from cai.sdk.agents.extensions.handoff_filters import remove_all_tools
from cai.sdk.agents.items import (
    HandoffOutputItem,
    MessageOutputItem,
    ToolCallOutputItem,
    TResponseInputItem,
)


def fake_agent():
    return Agent(
        name="fake_agent",
    )


def _get_message_input_item(content: str) -> TResponseInputItem:
    return {
        "role": "assistant",
        "content": content,
    }


def _get_function_result_input_item(content: str) -> TResponseInputItem:
    return {
        "call_id": "1",
        "output": content,
        "type": "function_call_output",
    }


def _get_message_output_run_item(content: str) -> MessageOutputItem:
    return MessageOutputItem(
        agent=fake_agent(),
        raw_item=ResponseOutputMessage(
            id="1",
            content=[ResponseOutputText(text=content, annotations=[], type="output_text")],
            role="assistant",
            status="completed",
            type="message",
        ),
    )


def _get_tool_output_run_item(content: str) -> ToolCallOutputItem:
    return ToolCallOutputItem(
        agent=fake_agent(),
        raw_item={
            "call_id": "1",
            "output": content,
            "type": "function_call_output",
        },
        output=content,
    )


def _get_handoff_input_item(content: str) -> TResponseInputItem:
    return {
        "call_id": "1",
        "output": content,
        "type": "function_call_output",
    }


def _get_handoff_output_run_item(content: str) -> HandoffOutputItem:
    return HandoffOutputItem(
        agent=fake_agent(),
        raw_item={
            "call_id": "1",
            "output": content,
            "type": "function_call_output",
        },
        source_agent=fake_agent(),
        target_agent=fake_agent(),
    )


def test_empty_data():
    handoff_input_data = HandoffInputData(input_history=(), pre_handoff_items=(), new_items=())
    filtered_data = remove_all_tools(handoff_input_data)
    assert filtered_data == handoff_input_data


def test_str_historyonly():
    handoff_input_data = HandoffInputData(input_history="Hello", pre_handoff_items=(), new_items=())
    filtered_data = remove_all_tools(handoff_input_data)
    assert filtered_data == handoff_input_data


def test_str_history_and_list():
    handoff_input_data = HandoffInputData(
        input_history="Hello",
        pre_handoff_items=(),
        new_items=(_get_message_output_run_item("Hello"),),
    )
    filtered_data = remove_all_tools(handoff_input_data)
    assert filtered_data == handoff_input_data


def test_list_history_and_list():
    handoff_input_data = HandoffInputData(
        input_history=(_get_message_input_item("Hello"),),
        pre_handoff_items=(_get_message_output_run_item("123"),),
        new_items=(_get_message_output_run_item("World"),),
    )
    filtered_data = remove_all_tools(handoff_input_data)
    assert filtered_data == handoff_input_data


def test_removes_tools_from_history():
    handoff_input_data = HandoffInputData(
        input_history=(
            _get_message_input_item("Hello1"),
            _get_function_result_input_item("World"),
            _get_message_input_item("Hello2"),
        ),
        pre_handoff_items=(
            _get_tool_output_run_item("abc"),
            _get_message_output_run_item("123"),
        ),
        new_items=(_get_message_output_run_item("World"),),
    )
    filtered_data = remove_all_tools(handoff_input_data)
    assert len(filtered_data.input_history) == 2
    assert len(filtered_data.pre_handoff_items) == 1
    assert len(filtered_data.new_items) == 1


def test_removes_tools_from_new_items():
    handoff_input_data = HandoffInputData(
        input_history=(),
        pre_handoff_items=(),
        new_items=(
            _get_message_output_run_item("Hello"),
            _get_tool_output_run_item("World"),
        ),
    )
    filtered_data = remove_all_tools(handoff_input_data)
    assert len(filtered_data.input_history) == 0
    assert len(filtered_data.pre_handoff_items) == 0
    assert len(filtered_data.new_items) == 1


def test_removes_tools_from_new_items_and_history():
    handoff_input_data = HandoffInputData(
        input_history=(
            _get_message_input_item("Hello1"),
            _get_function_result_input_item("World"),
            _get_message_input_item("Hello2"),
        ),
        pre_handoff_items=(
            _get_message_output_run_item("123"),
            _get_tool_output_run_item("456"),
        ),
        new_items=(
            _get_message_output_run_item("Hello"),
            _get_tool_output_run_item("World"),
        ),
    )
    filtered_data = remove_all_tools(handoff_input_data)
    assert len(filtered_data.input_history) == 2
    assert len(filtered_data.pre_handoff_items) == 1
    assert len(filtered_data.new_items) == 1


def test_removes_handoffs_from_history():
    handoff_input_data = HandoffInputData(
        input_history=(
            _get_message_input_item("Hello1"),
            _get_handoff_input_item("World"),
        ),
        pre_handoff_items=(
            _get_message_output_run_item("Hello"),
            _get_tool_output_run_item("World"),
            _get_handoff_output_run_item("World"),
        ),
        new_items=(
            _get_message_output_run_item("Hello"),
            _get_tool_output_run_item("World"),
            _get_handoff_output_run_item("World"),
        ),
    )
    filtered_data = remove_all_tools(handoff_input_data)
    assert len(filtered_data.input_history) == 1
    assert len(filtered_data.pre_handoff_items) == 1
    assert len(filtered_data.new_items) == 1