"""
E2E tests for KJB strategy flow.
"""
from fastapi.testclient import TestClient


def test_kjb_strategy_endpoint(client: TestClient, auth_headers):
    """Test KJB strategy ranking endpoint."""
    response = client.post(
        "/api/strategy/kjb",
        json={
            "universe": {"markets": ["KOSPI"]},
            "top_n": 10,
        },
        headers=auth_headers,
    )
    assert response.status_code in [200, 400, 500]
    if response.status_code == 200:
        data = response.json()
        assert data["strategy_name"] == "kjb"
        assert "stocks" in data


def test_kjb_backtest_creation(client: TestClient, auth_headers):
    """Test creating a KJB backtest."""
    response = client.post(
        "/api/backtest",
        json={
            "strategy_type": "kjb",
            "strategy_params": {
                "max_positions": 10,
                "cash_reserve_ratio": 0.3,
                "stop_loss_pct": 0.03,
                "target1_pct": 0.05,
                "target2_pct": 0.10,
            },
            "start_date": "2023-01-01",
            "end_date": "2023-12-31",
            "initial_capital": 10000000,
            "commission_rate": 0.00015,
            "slippage_rate": 0.001,
            "benchmark": "KOSPI",
            "top_n": 30,
        },
        headers=auth_headers,
    )
    assert response.status_code == 200
    data = response.json()
    assert "id" in data
    assert data["status"] == "pending"


def test_signal_today_endpoint(client: TestClient, auth_headers):
    """Test today's signals endpoint."""
    response = client.get("/api/signal/kjb/today", headers=auth_headers)
    assert response.status_code == 200
    assert isinstance(response.json(), list)


def test_signal_history_endpoint(client: TestClient, auth_headers):
    """Test signal history endpoint."""
    response = client.get(
        "/api/signal/kjb/history",
        params={"limit": 10},
        headers=auth_headers,
    )
    assert response.status_code == 200
    assert isinstance(response.json(), list)


def test_signal_requires_auth(client: TestClient):
    """Test that signal endpoints require authentication."""
    response = client.get("/api/signal/kjb/today")
    assert response.status_code == 401


def test_cancel_executed_signal(client: TestClient, auth_headers):
    """실행된 신호를 취소하면 거래가 삭제되고 보유량이 복원된다."""
    # 1. 포트폴리오 생성
    resp = client.post(
        "/api/portfolios",
        json={"name": "Signal Cancel Test", "portfolio_type": "general"},
        headers=auth_headers,
    )
    assert resp.status_code == 201
    portfolio_id = resp.json()["id"]

    # 2. 신호 생성 (직접 DB 경유 없이 API로 생성 불가 → 신호 실행 취소는 EXECUTED 신호에만 작동)
    # 오늘 날짜로 신호 조회해서 없으면 스킵
    today_resp = client.get("/api/signal/kjb/today", headers=auth_headers)
    signals = today_resp.json()

    if not signals:
        # 신호가 없으면 엔드포인트 존재만 검증 (portfolio_id 포함)
        resp = client.delete("/api/signal/9999/cancel", params={"portfolio_id": 9999}, headers=auth_headers)
        assert resp.status_code in [404, 400]
        return

    # 3. ACTIVE 신호에 보유 종목 세팅 후 신호 실행
    signal = signals[0]
    ticker = signal["ticker"]

    client.put(
        f"/api/portfolios/{portfolio_id}/holdings",
        json=[{"ticker": ticker, "quantity": 100, "avg_price": 10000}],
        headers=auth_headers,
    )

    exec_resp = client.post(
        f"/api/signal/{signal['id']}/execute",
        json={"portfolio_id": portfolio_id, "quantity": 10, "price": 10000},
        headers=auth_headers,
    )
    # 신호 타입에 따라 실패할 수 있음
    if exec_resp.status_code != 200:
        return

    # 4. 취소 요청
    cancel_resp = client.delete(
        f"/api/signal/{signal['id']}/cancel",
        params={"portfolio_id": portfolio_id},
        headers=auth_headers,
    )
    assert cancel_resp.status_code == 200
    data = cancel_resp.json()
    assert data["signal_status"] == "active"
    assert data["transaction_deleted"] is True