from __future__ import annotations

import re
from unittest.mock import AsyncMock, MagicMock

import pytest
from cerbero_mcp.exchanges.ibkr.client import IBKRClient, IBKRError
from pytest_httpx import HTTPXMock


@pytest.fixture
def fake_signer():
    s = MagicMock()
    s.consumer_key = "CK"
    s.access_token = "AT"
    s.get_live_session_token = AsyncMock(return_value="LSTBASE64==")
    s.sign_with_lst = MagicMock(return_value="SIG==")
    s.make_oauth_params = MagicMock(return_value={
        "oauth_consumer_key": "CK", "oauth_token": "AT",
        "oauth_nonce": "n", "oauth_timestamp": "1",
        "oauth_signature_method": "HMAC-SHA256", "oauth_version": "1.0",
    })
    return s


@pytest.fixture
def client(fake_signer):
    return IBKRClient(
        signer=fake_signer,
        account_id="DU1234",
        paper=True,
        base_url="https://api.ibkr.com/v1/api",
    )


@pytest.mark.asyncio
async def test_health_no_network(client):
    info = await client.health()
    assert info["status"] == "ok"
    assert info["paper"] is True


@pytest.mark.asyncio
async def test_get_account_summary(httpx_mock: HTTPXMock, client):
    httpx_mock.add_response(
        url=re.compile(r".*/portfolio/DU1234/summary"),
        json={"netliquidation": {"amount": 10000, "currency": "USD"}, "totalcashvalue": {"amount": 8000}},
    )
    httpx_mock.add_response(
        url=re.compile(r".*/tickle"),
        json={"session": "abc"},
    )
    data = await client.get_account()
    assert "netliquidation" in data


@pytest.mark.asyncio
async def test_request_retries_once_on_401(httpx_mock: HTTPXMock, client):
    httpx_mock.add_response(url=re.compile(r".*/tickle"), json={})
    # First call returns 401
    httpx_mock.add_response(
        url=re.compile(r".*/portfolio/DU1234/summary"),
        status_code=401, text="session expired",
    )
    # Second call (after LST refresh) succeeds
    httpx_mock.add_response(
        url=re.compile(r".*/portfolio/DU1234/summary"),
        json={"netliquidation": {"amount": 5000}},
    )
    data = await client.get_account()
    assert data["netliquidation"]["amount"] == 5000


@pytest.mark.asyncio
async def test_request_raises_on_persistent_401(httpx_mock: HTTPXMock, client):
    from cerbero_mcp.exchanges.ibkr.oauth import IBKRAuthError
    httpx_mock.add_response(url=re.compile(r".*/tickle"), json={})
    # Both attempts return 401
    httpx_mock.add_response(
        url=re.compile(r".*/portfolio/DU1234/summary"),
        status_code=401, text="bad creds",
    )
    httpx_mock.add_response(
        url=re.compile(r".*/portfolio/DU1234/summary"),
        status_code=401, text="bad creds",
    )
    with pytest.raises(IBKRAuthError, match="after retry"):
        await client.get_account()


@pytest.mark.asyncio
async def test_resolve_conid_caches(httpx_mock: HTTPXMock, client):
    httpx_mock.add_response(
        url=re.compile(r".*/tickle"), json={"session": "x"},
    )
    httpx_mock.add_response(
        url=re.compile(r".*/trsrv/secdef/search.*symbol=AAPL"),
        json=[{"conid": 265598, "symbol": "AAPL", "secType": "STK"}],
    )
    cid = await client.resolve_conid("AAPL", "STK")
    assert cid == 265598
    cid2 = await client.resolve_conid("AAPL", "STK")
    assert cid2 == 265598


@pytest.mark.asyncio
async def test_get_positions(httpx_mock: HTTPXMock, client):
    httpx_mock.add_response(url=re.compile(r".*/tickle"), json={})
    httpx_mock.add_response(
        url=re.compile(r".*/portfolio/DU1234/positions/0"),
        json=[{"conid": 265598, "position": 10, "mktPrice": 150}],
    )
    res = await client.get_positions()
    assert isinstance(res, list)
    assert res[0]["position"] == 10


@pytest.mark.asyncio
async def test_get_ticker_resolves_and_fetches(httpx_mock: HTTPXMock, client):
    httpx_mock.add_response(url=re.compile(r".*/tickle"), json={})
    httpx_mock.add_response(
        url=re.compile(r".*/trsrv/secdef/search.*symbol=AAPL"),
        json=[{"conid": 265598, "symbol": "AAPL", "secType": "STK"}],
    )
    httpx_mock.add_response(
        url=re.compile(r".*/iserver/marketdata/snapshot"),
        json=[{"31": "150.5", "84": "150.4", "86": "150.6", "conid": 265598}],
    )
    snap = await client.get_ticker("AAPL", "stocks")
    assert snap["last_price"] == 150.5
    assert snap["bid"] == 150.4
    assert snap["ask"] == 150.6


@pytest.mark.asyncio
async def test_resolve_conid_empty_response_raises(httpx_mock: HTTPXMock, client):
    httpx_mock.add_response(url=re.compile(r".*/tickle"), json={})
    httpx_mock.add_response(
        url=re.compile(r".*/trsrv/secdef/search.*symbol=NOPE"),
        json=[],
    )
    with pytest.raises(IBKRError, match="IBKR_CONID_NOT_FOUND"):
        await client.resolve_conid("NOPE", "STK")


@pytest.mark.asyncio
async def test_resolve_conid_malformed_response_raises(httpx_mock: HTTPXMock, client):
    httpx_mock.add_response(url=re.compile(r".*/tickle"), json={})
    httpx_mock.add_response(
        url=re.compile(r".*/trsrv/secdef/search.*symbol=BAD"),
        json=[{"symbol": "BAD"}],  # missing conid key
    )
    with pytest.raises(IBKRError, match="malformed"):
        await client.resolve_conid("BAD", "STK")