# -*- coding: utf-8 -*-

from types import SimpleNamespace

from backend.explain import range_explainer


def test_build_range_explanation_prefers_llm_text_when_available(monkeypatch):
    monkeypatch.setattr(
        range_explainer,
        "get_prices",
        lambda ticker, start_date, end_date: [
            SimpleNamespace(open=100, close=98, high=102, low=97, volume=1000),
            SimpleNamespace(open=98, close=96, high=99, low=95, volume=1100),
            SimpleNamespace(open=96, close=97, high=98, low=94, volume=1200),
        ],
    )
    monkeypatch.setattr(
        range_explainer,
        "analyze_range_with_llm",
        lambda payload: {
            "summary": "区间内整体偏弱，主题集中在盈利预期和供应链风险。",
            "trend_analysis": "前半段快速下探，后半段出现修复。",
            "bullish_factors": ["回调后出现承接"],
            "bearish_factors": ["盈利预期承压"],
            "model_label": "DASHSCOPE:qwen-max",
        },
    )

    result = range_explainer.build_range_explanation(
        ticker="AAPL",
        start_date="2026-03-10",
        end_date="2026-03-16",
        news_rows=[
            {
                "id": "news-1",
                "trade_date": "2026-03-10",
                "title": "Apple margin pressure concerns grow",
                "summary": "Investors focused on weaker margin outlook.",
                "sentiment": "negative",
                "relevance": "high",
                "ret_t0": -0.02,
                "reason_decrease": "盈利预期承压",
                "category": "earnings",
            }
        ],
    )

    assert result["analysis"]["summary"] == "区间内整体偏弱，主题集中在盈利预期和供应链风险。"
    assert result["analysis"]["trend_analysis"] == "前半段快速下探，后半段出现修复。"
    assert result["analysis"]["bullish_factors"] == ["回调后出现承接"]
    assert result["analysis"]["analysis_source"] == "llm"
    assert result["analysis"]["analysis_model_label"] == "DASHSCOPE:qwen-max"
    assert result["news_count"] == 1