"""Cancelled orders must never reach `event` (plan §1.4).

`GetOperationsByCursor` returns cancelled orders alongside executed ones. A cancelled one
carries `quantity_done = 0`, the quantity the order only ASKED for in `quantity`, and no
payment — so taken at face value it reads as a free acquisition, and the derived position
drifts above the broker's snapshot. The raw tier keeps them; only `event` filters.
"""

from __future__ import annotations

from datetime import UTC, datetime
from decimal import Decimal

from sqlalchemy import select

from factories import make_account
from fintracker.db import get_sessionmaker
from fintracker.models import AccountKind, AccountRole, Event, EventKind
from fintracker.sources.tinvest.client import Operation
from fintracker.sources.tinvest.sync import _is_executed, _write_events

D = Decimal


def op(op_id: str, state: str, *, quantity: str = "2") -> Operation:
    return Operation(
        id=op_id,
        account_id="tinv-1",
        operation_type="OPERATION_TYPE_BUY",
        state=state,
        ts=datetime(2026, 4, 2, 10, 0, tzinfo=UTC),
        instrument_uid=None,
        position_uid=None,
        figi=None,
        quantity=D(quantity),
        price=D("11325"),
        price_currency="RUB",
        payment=D("-22650.95"),
        payment_currency="RUB",
        commission=None,
        accrued_int=None,
        description="Покупка",
        payload={},
    )


def test_is_executed_reads_the_state_not_the_quantity():
    assert _is_executed(op("1", "OPERATION_STATE_EXECUTED"))
    assert not _is_executed(op("2", "OPERATION_STATE_CANCELED"))
    # an older payload that states no state at all is trusted, not silently dropped
    assert _is_executed(op("3", ""))


async def broker_account() -> int:
    return await make_account(
        name="Брокерский",
        kind=AccountKind.broker,
        role=AccountRole.investment,
        balance=None,
        include_in_net_worth=False,
        source="tinvest",
        source_id="tinv-1",
    )


async def dedupe_keys() -> list[str]:
    async with get_sessionmaker()() as session:
        return list((await session.execute(select(Event.dedupe_key))).scalars().all())


async def write(account_id: int, *operations: Operation) -> int:
    async with get_sessionmaker()() as session:
        written, _ = await _write_events(session, account_id, list(operations), {})
        await session.commit()
        return written


async def test_a_cancelled_order_never_becomes_an_event(app):
    account = await broker_account()
    written = await write(
        account,
        op("exec-1", "OPERATION_STATE_EXECUTED", quantity="1"),
        op("cancel-1", "OPERATION_STATE_CANCELED"),
    )
    assert written == 1
    assert await dedupe_keys() == ["tinvest:tinv-1:exec-1"]


async def test_re_reading_removes_a_cancelled_order_imported_before_this_filter(app):
    account = await broker_account()
    async with get_sessionmaker()() as session:
        session.add(
            Event(
                account_id=account,
                kind=EventKind.buy,
                ts=datetime(2026, 4, 2, 10, 0, tzinfo=UTC),
                trade_date=datetime(2026, 4, 2, tzinfo=UTC).date(),
                quantity=D(2),
                amount=D("22650.95"),
                currency="RUB",
                source="tinvest",
                source_id="cancel-1",
                dedupe_key="tinvest:tinv-1:cancel-1",
            )
        )
        await session.commit()

    await write(account, op("cancel-1", "OPERATION_STATE_CANCELED"))
    assert await dedupe_keys() == []