from datetime import UTC, datetime
from decimal import Decimal

import pytest

from broker_sync.models import (
    Account,
    AccountType,
    Activity,
    ActivityType,
    FxRateSource,
)


def test_account_type_covers_uk_wrappers() -> None:
    assert {
        AccountType.ISA,
        AccountType.SIPP,
        AccountType.GIA,
        AccountType.LISA,
        AccountType.JISA,
        AccountType.WORKPLACE_PENSION,
    } <= set(AccountType)


def test_activity_type_covers_wealthfolio_types() -> None:
    # Mirrors Wealthfolio docs/activities/activity-types.md
    for name in (
            "BUY",
            "SELL",
            "DIVIDEND",
            "INTEREST",
            "DEPOSIT",
            "WITHDRAWAL",
            "TRANSFER_IN",
            "TRANSFER_OUT",
            "CONVERSION_IN",
            "CONVERSION_OUT",
            "FEE",
            "TAX",
    ):
        assert hasattr(ActivityType, name), f"missing {name}"


def test_activity_minimal_construct() -> None:
    a = Activity(
        external_id="t212:order:1",
        account_id="t212-isa",
        account_type=AccountType.ISA,
        date=datetime(2026, 1, 15, tzinfo=UTC),
        activity_type=ActivityType.BUY,
        symbol="VUAG",
        quantity=Decimal("10"),
        unit_price=Decimal("85.5"),
        currency="GBP",
    )
    assert a.external_id == "t212:order:1"
    assert a.fee == Decimal("0")
    assert a.fx_rate_source is None


def test_buy_requires_qty_and_price() -> None:
    with pytest.raises(ValueError, match="BUY.*quantity"):
        Activity(
            external_id="x",
            account_id="a",
            account_type=AccountType.GIA,
            date=datetime(2026, 1, 1, tzinfo=UTC),
            activity_type=ActivityType.BUY,
            symbol="VUAG",
            currency="GBP",
        )


def test_dividend_requires_amount() -> None:
    with pytest.raises(ValueError, match="DIVIDEND.*amount"):
        Activity(
            external_id="x",
            account_id="a",
            account_type=AccountType.GIA,
            date=datetime(2026, 1, 1, tzinfo=UTC),
            activity_type=ActivityType.DIVIDEND,
            currency="GBP",
        )


def test_wealthfolio_csv_row_shape() -> None:
    a = Activity(
        external_id="ie:2026-04:0001",
        account_id="ie-isa",
        account_type=AccountType.ISA,
        date=datetime(2026, 4, 1, 10, 30, tzinfo=UTC),
        activity_type=ActivityType.BUY,
        symbol="VWRP",
        quantity=Decimal("2.5"),
        unit_price=Decimal("110.00"),
        currency="GBP",
        fee=Decimal("0.50"),
        amount_gbp=Decimal("275.50"),
        fx_rate_gbp=Decimal("1.0"),
        fx_rate_source=FxRateSource.ECB_LIVE,
        notes="sync:invest-engine:ie:2026-04:0001",
    )
    row = a.to_wealthfolio_csv_row()
    # Wealthfolio activity import columns (from docs):
    # date, activity_type, symbol, quantity, unit_price, currency, fee, amount, notes, ...
    assert row["date"] == "2026-04-01T10:30:00+00:00"
    assert row["activity_type"] == "BUY"
    assert row["symbol"] == "VWRP"
    assert row["quantity"] == "2.5"
    assert row["unit_price"] == "110.00"
    assert row["currency"] == "GBP"
    assert row["fee"] == "0.50"
    assert row["notes"] == "sync:invest-engine:ie:2026-04:0001"


def test_account_construct() -> None:
    acc = Account(
        id="t212-isa",
        name="Trading212 ISA",
        account_type=AccountType.ISA,
        currency="GBP",
        provider="trading212",
    )
    assert acc.id == "t212-isa"
    assert acc.account_type is AccountType.ISA