"""MOEX ISS parsing: the column-order and percent-of-nominal traps."""

from datetime import date
from decimal import Decimal

import httpx
import pytest
import respx

from fintracker.sources.moex.client import LastPrice, MoexClient, _rows
from fintracker.sources.moex.sync import _secid_candidates

ISS = "https://iss.moex.com/iss"


def block(name: str, columns: list[str], data: list[list]) -> dict:
    return {name: {"columns": columns, "data": data}}


def test_rows_zips_columns_by_name():
    """Reading by position is what lets a column-order change slide prices into volumes."""
    payload = block("history", ["TRADEDATE", "CLOSE"], [["2026-09-17", 275.18]])
    assert _rows(payload, "history") == [{"TRADEDATE": "2026-09-17", "CLOSE": 275.18}]


def test_rows_on_a_missing_block_is_empty_not_an_error():
    assert _rows({}, "history") == []


@respx.mock
async def test_share_history_uses_the_settlement_price():
    """LEGALCLOSEPRICE survives an illiquid day better than CLOSE, so it wins."""
    respx.get(url__startswith=f"{ISS}/history").mock(
        return_value=httpx.Response(
            200,
            json=block(
                "history",
                ["TRADEDATE", "CLOSE", "LEGALCLOSEPRICE", "CURRENCYID"],
                [["2026-09-17", 275.18, 274.90, "SUR"]],
            ),
        )
    )
    async with MoexClient() as moex:
        candles = await moex.history(
            "SBER",
            engine="stock",
            market="shares",
            board="TQBR",
            since=date(2026, 9, 17),
            until=date(2026, 9, 17),
        )

    assert candles[0].close == Decimal("274.90")
    assert candles[0].price_pct is None
    assert candles[0].currency == "RUB"  # ISS says SUR; the system speaks ISO


@respx.mock
async def test_bond_history_resolves_percent_of_nominal_into_money():
    """A bond quoted at 98.396 of a 1000 nominal is worth 983.96, not 98.4."""
    respx.get(url__startswith=f"{ISS}/history").mock(
        return_value=httpx.Response(
            200,
            json=block(
                "history",
                ["TRADEDATE", "LEGALCLOSEPRICE", "FACEVALUE", "ACCINT", "CURRENCYID"],
                [["2026-09-17", 98.396, 1000, 9.6, "SUR"]],
            ),
        )
    )
    async with MoexClient() as moex:
        candles = await moex.history(
            "SU26207RMFS9",
            engine="stock",
            market="bonds",
            board="TQOB",
            since=date(2026, 9, 17),
            until=date(2026, 9, 17),
        )

    candle = candles[0]
    assert candle.close == Decimal("983.960")
    assert candle.price_pct == Decimal("98.396")  # the quote as published, kept
    assert candle.accrued_interest == Decimal("9.6")


@respx.mock
async def test_history_follows_pagination():
    """ISS caps a page at 100 rows; stopping there would silently truncate the history."""
    first = [[f"2026-01-{d:02d}", 10 + d] for d in range(1, 31)] * 4  # 120 rows
    respx.get(url__startswith=f"{ISS}/history").mock(
        side_effect=[
            httpx.Response(200, json=block("history", ["TRADEDATE", "CLOSE"], first[:100])),
            httpx.Response(200, json=block("history", ["TRADEDATE", "CLOSE"], first[100:])),
        ]
    )
    async with MoexClient() as moex:
        candles = await moex.history(
            "SBER",
            engine="stock",
            market="shares",
            board="TQBR",
            since=date(2026, 1, 1),
            until=date(2026, 1, 31),
        )

    assert len(candles) == 120


def test_last_price_of_a_bond_needs_a_nominal_to_become_money():
    quote = LastPrice(value=Decimal("98.439"), is_percent_of_nominal=True)

    assert quote.in_money(Decimal(1000)) == Decimal("984.39")
    # no nominal: unknowable, and a percent must never be passed off as roubles
    assert quote.in_money(None) is None


def test_last_price_of_a_share_is_already_money():
    assert LastPrice(value=Decimal("275.65"), is_percent_of_nominal=False).in_money(
        None
    ) == Decimal("275.65")


@pytest.mark.parametrize(
    ("ticker", "expected"),
    [("TBRU@", ["TBRU@", "TBRU"]), ("SBER", ["SBER"])],
)
def test_tinvest_ticker_suffix_is_stripped_as_a_fallback(ticker, expected):
    """T-Invest writes TBRU@ for its own line; MOEX lists it plain."""
    assert _secid_candidates(ticker) == expected