"""resolve_process precedence (id → exact title → substring) in services/notes.py.

Mocks async_session — no real DB, matching the other notes-service tests.
"""
from unittest.mock import AsyncMock, MagicMock, patch

import pytest
from tests.helpers import fake_note, make_mock_session


def _result(first=None, all_=None):
    """A SQLAlchemy-result mock exposing .scalars().first()/.all()."""
    r = MagicMock()
    r.scalars.return_value.first.return_value = first
    r.scalars.return_value.all.return_value = all_ or []
    return r


@pytest.mark.asyncio
async def test_resolve_process_by_numeric_id():
    note = fake_note(id=5, title="Drift Audit")
    session = make_mock_session()
    # numeric id → first execute (id lookup) hits
    session.execute = AsyncMock(side_effect=[_result(first=note)])
    with patch("scribe.services.notes.async_session") as cls:
        cls.return_value = session
        from scribe.services.notes import resolve_process
        found, candidates = await resolve_process(1, "5")
    assert found is note
    assert candidates == []
    assert session.execute.await_count == 1


@pytest.mark.asyncio
async def test_resolve_process_exact_title_beats_substring():
    note = fake_note(id=7, title="Drift Audit")
    session = make_mock_session()
    # non-digit → exact-title query (first execute) hits; substring never runs
    session.execute = AsyncMock(side_effect=[_result(first=note)])
    with patch("scribe.services.notes.async_session") as cls:
        cls.return_value = session
        from scribe.services.notes import resolve_process
        found, candidates = await resolve_process(1, "Drift Audit")
    assert found is note
    assert candidates == []
    assert session.execute.await_count == 1


@pytest.mark.asyncio
async def test_resolve_process_substring_returns_candidates():
    n1 = fake_note(id=7, title="Drift Audit Remediation")
    n2 = fake_note(id=9, title="Drift Audit Notes")
    session = make_mock_session()
    # exact miss, then substring returns two (most-recent first)
    session.execute = AsyncMock(side_effect=[_result(first=None), _result(all_=[n1, n2])])
    with patch("scribe.services.notes.async_session") as cls:
        cls.return_value = session
        from scribe.services.notes import resolve_process
        found, candidates = await resolve_process(1, "drift")
    assert found is n1
    assert candidates == [{"id": 9, "title": "Drift Audit Notes"}]
    assert session.execute.await_count == 2


@pytest.mark.asyncio
async def test_resolve_process_no_match():
    session = make_mock_session()
    session.execute = AsyncMock(side_effect=[_result(first=None), _result(all_=[])])
    with patch("scribe.services.notes.async_session") as cls:
        cls.return_value = session
        from scribe.services.notes import resolve_process
        found, candidates = await resolve_process(1, "nope")
    assert found is None
    assert candidates == []