"""Tests for app.gateway.services — run lifecycle service layer."""

from __future__ import annotations

import json


def test_format_sse_basic():
    from app.gateway.services import format_sse

    frame = format_sse("metadata", {"run_id": "abc"})
    assert frame.startswith("event: metadata\n")
    assert "data: " in frame
    parsed = json.loads(frame.split("data: ")[1].split("\n")[0])
    assert parsed["run_id"] == "abc"


def test_format_sse_with_event_id():
    from app.gateway.services import format_sse

    frame = format_sse("metadata", {"run_id": "abc"}, event_id="123-0")
    assert "id: 123-0" in frame


def test_format_sse_end_event_null():
    from app.gateway.services import format_sse

    frame = format_sse("end", None)
    assert "data: null" in frame


def test_format_sse_no_event_id():
    from app.gateway.services import format_sse

    frame = format_sse("values", {"x": 1})
    assert "id:" not in frame


def test_normalize_stream_modes_none():
    from app.gateway.services import normalize_stream_modes

    assert normalize_stream_modes(None) == ["values"]


def test_normalize_stream_modes_string():
    from app.gateway.services import normalize_stream_modes

    assert normalize_stream_modes("messages-tuple") == ["messages-tuple"]


def test_normalize_stream_modes_list():
    from app.gateway.services import normalize_stream_modes

    assert normalize_stream_modes(["values", "messages-tuple"]) == ["values", "messages-tuple"]


def test_normalize_stream_modes_empty_list():
    from app.gateway.services import normalize_stream_modes

    assert normalize_stream_modes([]) == ["values"]


def test_normalize_input_none():
    from app.gateway.services import normalize_input

    assert normalize_input(None) == {}


def test_normalize_input_with_messages():
    from app.gateway.services import normalize_input

    result = normalize_input({"messages": [{"role": "user", "content": "hi"}]})
    assert len(result["messages"]) == 1
    assert result["messages"][0].content == "hi"


def test_normalize_input_passthrough():
    from app.gateway.services import normalize_input

    result = normalize_input({"custom_key": "value"})
    assert result == {"custom_key": "value"}


def test_build_run_config_basic():
    from app.gateway.services import build_run_config

    config = build_run_config("thread-1", None, None)
    assert config["configurable"]["thread_id"] == "thread-1"
    assert config["recursion_limit"] == 100


def test_build_run_config_with_overrides():
    from app.gateway.services import build_run_config

    config = build_run_config(
        "thread-1",
        {"configurable": {"model_name": "gpt-4"}, "tags": ["test"]},
        {"user": "alice"},
    )
    assert config["configurable"]["model_name"] == "gpt-4"
    assert config["tags"] == ["test"]
    assert config["metadata"]["user"] == "alice"