"""Regression tests for owner-scoped model resolution in scheduled actions."""

import sqlite3
from datetime import datetime
from types import SimpleNamespace

import pytest


class _Column:
    def __eq__(self, _other):
        return True

    def __ne__(self, _other):
        return True

    def __ge__(self, _other):
        return True

    def __le__(self, _other):
        return True


class _Query:
    def __init__(self, rows):
        self._rows = rows

    def filter(self, *_args, **_kwargs):
        return self

    def limit(self, _limit):
        return self

    def all(self):
        return list(self._rows)


class _Db:
    def __init__(self, rows_by_model):
        self._rows_by_model = rows_by_model
        self.commits = 0
        self.closed = False

    def query(self, model):
        return _Query(self._rows_by_model.get(model, []))

    def commit(self):
        self.commits += 1

    def close(self):
        self.closed = True


def _resolver_spy(monkeypatch, utility_result=("", "", {}), default_result=("http://llm", "model", {})):
    from src import endpoint_resolver

    calls = []
    fallback_calls = []

    def fake_resolve(kind, *args, **kwargs):
        calls.append((kind, kwargs.get("owner")))
        return utility_result if kind == "utility" else default_result

    def fake_fallbacks(*args, **kwargs):
        fallback_calls.append(kwargs.get("owner"))
        return []

    monkeypatch.setattr(endpoint_resolver, "resolve_endpoint", fake_resolve)
    monkeypatch.setattr(endpoint_resolver, "resolve_utility_fallback_candidates", fake_fallbacks)
    return calls, fallback_calls


@pytest.mark.asyncio
async def test_classify_events_resolves_llm_for_task_owner(monkeypatch):
    from core import database
    from src.builtin_actions import action_classify_events

    class FakeCalendarEvent:
        dtstart = _Column()
        status = _Column()

    event = SimpleNamespace(
        summary="Demo presentation",
        event_type="work",
        importance="high",
        color=None,
        dtstart=datetime(2026, 1, 1, 9, 0, 0),
        location="",
    )
    db = _Db({FakeCalendarEvent: [event]})
    calls, _fallback_calls = _resolver_spy(monkeypatch, utility_result=("http://llm", "model", {}))

    monkeypatch.setattr(database, "CalendarEvent", FakeCalendarEvent)
    monkeypatch.setattr(database, "SessionLocal", lambda: db)

    message, ok = await action_classify_events("alice")

    assert ok is True
    assert "Scanned 1 upcoming event" in message
    assert calls == [("utility", "alice")]
    assert db.closed is True


@pytest.mark.asyncio
async def test_learn_sender_signatures_resolves_llm_for_task_owner(monkeypatch):
    from routes import email_helpers
    from src.builtin_actions import action_learn_sender_signatures

    class FakeImap:
        def __init__(self, owner=""):
            self.owner = owner

        def select(self, *_args, **_kwargs):
            return "OK", []

        def search(self, *_args, **_kwargs):
            return "OK", [b"1 2 3"]

        def fetch(self, _uid, _query):
            return "OK", [(None, b"From: Writer <writer@example.com>\r\n\r\n")]

        def logout(self):
            return None

    calls, _fallback_calls = _resolver_spy(monkeypatch, utility_result=("", "", {}), default_result=("", "", {}))
    imap_owners = []

    def fake_imap_connect(_account_id=None, owner=""):
        imap_owners.append(owner)
        return FakeImap(owner)

    monkeypatch.setattr(email_helpers, "_imap_connect", fake_imap_connect)

    message, ok = await action_learn_sender_signatures("alice")

    assert ok is False
    assert message == "No LLM endpoint available"
    assert calls == [("utility", "alice"), ("default", "alice")]
    assert imap_owners == ["alice"]


@pytest.mark.asyncio
async def test_learn_sender_signatures_writes_owner_scoped_cache(monkeypatch, tmp_path):
    from routes import email_helpers
    from src import endpoint_resolver, llm_core
    from src.builtin_actions import action_learn_sender_signatures

    db_path = tmp_path / "scheduled_emails.db"
    monkeypatch.setattr(email_helpers, "SCHEDULED_DB", db_path)
    email_helpers._init_scheduled_db()

    conn = sqlite3.connect(db_path)
    try:
        conn.execute(
            """
            INSERT INTO sender_signatures
            (from_address, owner, signature_text, sample_count, last_built_at, model_used, source)
            VALUES (?, ?, ?, ?, ?, ?, ?)
            """,
            (
                "writer@example.com",
                "bob",
                "bob cached signature",
                3,
                "2999-01-01T00:00:00",
                "old-model",
                "llm",
            ),
        )
        conn.commit()
    finally:
        conn.close()

    class FakeImap:
        def select(self, *_args, **_kwargs):
            return "OK", []

        def search(self, *_args, **_kwargs):
            return "OK", [b"1 2 3"]

        def fetch(self, uid, query):
            if "HEADER.FIELDS" in query:
                return "OK", [(None, b"From: Writer <writer@example.com>\r\n\r\n")]
            return "OK", [
                (
                    None,
                    (
                        b"Thanks for the update.\r\n\r\n"
                        b"Regards,\r\n"
                        b"Writer Example\r\n"
                        b"Example Co.\r\n"
                        + str(uid).encode()
                    ),
                )
            ]

        def logout(self):
            return None

    imap_owners = []

    def fake_imap_connect(_account_id=None, owner=""):
        imap_owners.append(owner)
        return FakeImap()

    monkeypatch.setattr(email_helpers, "_imap_connect", fake_imap_connect)
    monkeypatch.setattr(
        endpoint_resolver,
        "resolve_endpoint",
        lambda kind, *args, **kwargs: ("http://llm", "alice-model", {}),
    )

    async def fake_llm_call_async(**_kwargs):
        return "Writer Example\nExample Co.\nwriter@example.com"

    monkeypatch.setattr(llm_core, "llm_call_async", fake_llm_call_async)

    message, ok = await action_learn_sender_signatures("alice")

    assert ok is True
    assert message.startswith("Learned sigs: 1 found")
    assert imap_owners == ["alice", "alice"]

    conn = sqlite3.connect(db_path)
    try:
        rows = conn.execute(
            """
            SELECT owner, signature_text, model_used
            FROM sender_signatures
            WHERE from_address = ?
            ORDER BY owner
            """,
            ("writer@example.com",),
        ).fetchall()
    finally:
        conn.close()

    assert rows == [
        ("alice", "Writer Example\nExample Co.\nwriter@example.com", "alice-model"),
        ("bob", "bob cached signature", "old-model"),
    ]


@pytest.mark.asyncio
async def test_check_email_urgency_resolves_llm_candidates_for_task_owner(monkeypatch, tmp_path):
    from core import database
    from src.builtin_actions import TaskNoop, action_check_email_urgency

    class FakeEmailAccount:
        enabled = _Column()
        owner = _Column()
        imap_user = _Column()
        from_address = _Column()

    db = _Db({FakeEmailAccount: []})
    calls, fallback_calls = _resolver_spy(monkeypatch, utility_result=("http://llm", "model", {}))

    monkeypatch.chdir(tmp_path)
    monkeypatch.setattr(database, "EmailAccount", FakeEmailAccount)
    monkeypatch.setattr(database, "SessionLocal", lambda: db)

    with pytest.raises(TaskNoop, match="no email accounts configured"):
        await action_check_email_urgency("alice")

    assert calls == [("utility", "alice")]
    assert fallback_calls == ["alice"]
    assert db.closed is True