from __future__ import annotations

from datetime import datetime
from decimal import Decimal
from pathlib import Path

from broker_sync.models import AccountType, ActivityType
from broker_sync.providers.parsers.invest_engine import parse_invest_engine_email

_FIXTURES = Path(__file__).parent.parent.parent / "fixtures" / "invest_engine"


def _load(name: str) -> bytes:
    return (_FIXTURES / name).read_bytes()


# -- RFC 2822 body (v2-style, single BUY) --


def test_rfc2822_single_buy_parses_to_one_activity() -> None:
    activities = parse_invest_engine_email(_load("rfc2822_v2_single_buy.eml"))
    assert len(activities) == 1
    a = activities[0]
    assert a.activity_type is ActivityType.BUY
    assert a.symbol == "VUAG"
    assert a.quantity == Decimal("59.539562")
    assert a.unit_price == Decimal("60.46")
    assert a.currency == "GBP"
    assert a.date == datetime(2023, 1, 17)
    assert a.account_id == "invest-engine-primary"
    assert a.account_type is AccountType.ISA


def test_rfc2822_external_id_is_deterministic() -> None:
    a1 = parse_invest_engine_email(_load("rfc2822_v2_single_buy.eml"))[0]
    a2 = parse_invest_engine_email(_load("rfc2822_v2_single_buy.eml"))[0]
    assert a1.external_id == a2.external_id
    assert a1.external_id.startswith("invest-engine:")


def test_rfc2822_notes_record_parse_strategy() -> None:
    a = parse_invest_engine_email(_load("rfc2822_v2_single_buy.eml"))[0]
    assert a.notes is not None
    assert "rfc2822" in a.notes