import httpx
import pytest
import respx

from arbitrade.config.settings import Settings
from arbitrade.exchange.kraken_rest import KrakenRestClient


@pytest.mark.asyncio
async def test_server_time_success() -> None:
    settings = Settings(_env_file=None)
    client = KrakenRestClient(settings)

    with respx.mock(base_url=settings.kraken_rest_url) as mock_router:
        mock_router.get("/0/public/Time").respond(
            200,
            json={"error": [], "result": {"unixtime": 1}},
        )

        payload = await client.server_time()

    await client.close()
    assert payload["unixtime"] == 1


@pytest.mark.asyncio
async def test_retry_then_success() -> None:
    settings = Settings(
        _env_file=None,
        kraken_retry_attempts=2,
        kraken_retry_base_delay_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with respx.mock(base_url=settings.kraken_rest_url) as mock_router:
        route = mock_router.get("/0/public/Time")
        route.side_effect = [
            httpx.ConnectError("boom"),
            httpx.Response(200, json={"error": [], "result": {"unixtime": 2}}),
        ]

        payload = await client.server_time()

    await client.close()
    assert payload["unixtime"] == 2


@pytest.mark.asyncio
async def test_balances_private_call_uses_headers() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY="key",
        KRAKEN_API_SECRET="c2VjcmV0",  # base64("secret")
        kraken_private_rate_limit_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with respx.mock(base_url=settings.kraken_rest_url) as mock_router:
        route = mock_router.post("/0/private/Balance").respond(
            200,
            json={"error": [], "result": {"ZUSD": "10.0"}},
        )
        payload = await client.balances()

    await client.close()
    request = route.calls.last.request
    assert request.headers.get("API-Key") == "key"
    assert request.headers.get("API-Sign")
    assert payload["ZUSD"] == "10.0"


@pytest.mark.asyncio
async def test_balances_requires_credentials() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY=None,
        KRAKEN_API_SECRET=None,
        kraken_private_rate_limit_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with pytest.raises(RuntimeError, match="Missing Kraken API credentials"):
        await client.balances()

    await client.close()


def test_compliance_default_ok() -> None:
    settings = Settings(_env_file=None)
    client = KrakenRestClient(settings)

    issues = client.validate_compliance()

    assert issues == []


def test_compliance_detects_insecure_config() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_REST_URL="http://api.kraken.com",
        KRAKEN_PRIVATE_RATE_LIMIT_SECONDS=0.0,
        KRAKEN_RETRY_ATTEMPTS=0,
        KRAKEN_RETRY_BASE_DELAY_SECONDS=-1.0,
    )
    client = KrakenRestClient(settings)

    issues = client.validate_compliance()

    assert any("https://" in issue for issue in issues)
    assert any("below 1.0" in issue for issue in issues)
    assert any("ATTEMPTS" in issue for issue in issues)
    assert any("BASE_DELAY" in issue for issue in issues)


@pytest.mark.asyncio
async def test_place_market_order_posts_add_order_payload() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY="key",
        KRAKEN_API_SECRET="c2VjcmV0",  # base64("secret")
        kraken_private_rate_limit_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with respx.mock(base_url=settings.kraken_rest_url) as mock_router:
        route = mock_router.post("/0/private/AddOrder").respond(
            200,
            json={"error": [], "result": {"txid": ["m1"]}},
        )
        payload = await client.place_market_order(
            pair="XBTUSD",
            side="buy",
            volume=0.05,
        )

    await client.close()
    request_body = route.calls.last.request.content.decode()
    assert "pair=XBTUSD" in request_body
    assert "type=buy" in request_body
    assert "ordertype=market" in request_body
    assert "volume=0.05" in request_body
    assert payload["txid"] == ["m1"]


@pytest.mark.asyncio
async def test_place_limit_order_posts_add_order_payload() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY="key",
        KRAKEN_API_SECRET="c2VjcmV0",  # base64("secret")
        kraken_private_rate_limit_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with respx.mock(base_url=settings.kraken_rest_url) as mock_router:
        route = mock_router.post("/0/private/AddOrder").respond(
            200,
            json={"error": [], "result": {"txid": ["l1"]}},
        )
        payload = await client.place_limit_order(
            pair="ETHUSD",
            side="sell",
            volume=1.5,
            price=3500.0,
        )

    await client.close()
    request_body = route.calls.last.request.content.decode()
    assert "pair=ETHUSD" in request_body
    assert "type=sell" in request_body
    assert "ordertype=limit" in request_body
    assert "price=3500.0" in request_body
    assert "volume=1.5" in request_body
    assert payload["txid"] == ["l1"]


@pytest.mark.asyncio
async def test_place_order_validates_inputs() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY="key",
        KRAKEN_API_SECRET="c2VjcmV0",  # base64("secret")
        kraken_private_rate_limit_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with pytest.raises(ValueError, match="side"):
        await client.place_market_order(pair="XBTUSD", side="hold", volume=0.1)

    with pytest.raises(ValueError, match="volume"):
        await client.place_market_order(pair="XBTUSD", side="buy", volume=0.0)

    with pytest.raises(ValueError, match="price"):
        await client.place_limit_order(
            pair="XBTUSD",
            side="buy",
            volume=0.1,
            price=0.0,
        )

    await client.close()


@pytest.mark.asyncio
async def test_query_order_posts_query_orders_payload() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY="key",
        KRAKEN_API_SECRET="c2VjcmV0",  # base64("secret")
        kraken_private_rate_limit_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with respx.mock(base_url=settings.kraken_rest_url) as mock_router:
        route = mock_router.post("/0/private/QueryOrders").respond(
            200,
            json={"error": [], "result": {"order-1": {"status": "closed"}}},
        )
        payload = await client.query_order(order_id="order-1", include_trades=False)

    await client.close()
    request_body = route.calls.last.request.content.decode()
    assert "txid=order-1" in request_body
    assert "trades=false" in request_body
    assert payload["order-1"]["status"] == "closed"


@pytest.mark.asyncio
async def test_cancel_order_posts_cancel_order_payload() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY="key",
        KRAKEN_API_SECRET="c2VjcmV0",  # base64("secret")
        kraken_private_rate_limit_seconds=0.0,
    )
    client = KrakenRestClient(settings)

    with respx.mock(base_url=settings.kraken_rest_url) as mock_router:
        route = mock_router.post("/0/private/CancelOrder").respond(
            200,
            json={"error": [], "result": {"count": 1}},
        )
        payload = await client.cancel_order(order_id="order-1")

    await client.close()
    request_body = route.calls.last.request.content.decode()
    assert "txid=order-1" in request_body
    assert payload["count"] == 1