"""资金面中转：Web 只打 data_provider，字段原样回给前端。"""
from __future__ import annotations

import sys
from pathlib import Path
from unittest.mock import patch

import pytest

WEB_ROOT = Path(__file__).resolve().parents[1]
ROOT = Path(__file__).resolve().parents[2]
sys.path.insert(0, str(ROOT))
sys.path.insert(0, str(WEB_ROOT))


SNAPSHOT = {
    "exchange": "bitget",
    "symbol": "BTC/USDT:USDT",
    "timestamp": 1789039236740,
    "datetime": "2026-09-10T11:20:36.740000Z",
    "funding_rate": 0.0001,
    "open_interest": 36207.21,
    "oi_change_pct": -0.01,
    "basis": -0.03,
}

OI_HIST = {
    "metric": "open_interest_history",
    "symbol": "BTC/USDT:USDT",
    "period": "15m",
    "count": 1,
    "data": [
        {
            "timestamp": 1789038900000,
            "datetime": "2026-09-10T11:15:00Z",
            "open_interest_amount": 106162.005,
            "open_interest_value": 8269553076.678,
        }
    ],
}


@pytest.fixture
def client():
    from app import create_app

    app = create_app()
    app.config["TESTING"] = True
    return app.test_client()


def test_derivatives_proxy_passthrough(client):
    with patch("api.provider.fetch_derivatives", return_value=SNAPSHOT) as mock_fetch:
        resp = client.get("/api/derivatives?symbol=BTC/USDT:USDT")
    assert resp.status_code == 200
    body = resp.get_json()
    assert body["funding_rate"] == 0.0001
    assert body["open_interest"] == 36207.21
    assert body["oi_change_pct"] == -0.01
    assert body["basis"] == -0.03
    mock_fetch.assert_called_once()
    assert mock_fetch.call_args[0][0] == "BTC/USDT:USDT"


def test_sentiment_metrics_proxy_passthrough(client):
    with patch("api.provider.fetch_sentiment_metrics", return_value=OI_HIST) as mock_fetch:
        resp = client.get(
            "/api/sentiment/metrics?metric=open_interest_history&symbol=BTC/USDT:USDT&limit=1"
        )
    assert resp.status_code == 200
    body = resp.get_json()
    assert body["metric"] == "open_interest_history"
    assert body["data"][0]["open_interest_amount"] == 106162.005
    mock_fetch.assert_called_once()
    assert mock_fetch.call_args[0][0] == "open_interest_history"


def test_sentiment_metrics_requires_metric(client):
    resp = client.get("/api/sentiment/metrics?symbol=BTC/USDT:USDT")
    assert resp.status_code == 400


def test_sentiment_latest_proxy_passthrough(client):
    latest = {
        "symbol": "BTC/USDT:USDT",
        "data": {
            "taker_buy_sell_ratio": {"buy_sell_ratio": 1.36},
            "long_short_account_ratio": {"long_short_ratio": 1.5},
            "top_long_short_position_ratio": {"long_short_ratio": 2.26},
        },
    }
    with patch("api.provider.fetch_sentiment_latest", return_value=latest) as mock_fetch:
        resp = client.get("/api/sentiment/latest?symbol=BTC/USDT:USDT")
    assert resp.status_code == 200
    body = resp.get_json()
    assert body["data"]["taker_buy_sell_ratio"]["buy_sell_ratio"] == 1.36
    mock_fetch.assert_called_once()