from unittest.mock import patch, MagicMock
import os
import tempfile

import pytest

from app import db as db_module
from app import news_collector


@pytest.fixture
def tmp_db(monkeypatch):
    fd, path = tempfile.mkstemp(suffix=".db")
    os.close(fd)
    monkeypatch.setattr(db_module, "DB_PATH", path)
    db_module.init_db()
    yield path
    # Close all SQLite WAL files before removal (needed on Windows)
    import gc
    gc.collect()
    for ext in ("", "-wal", "-shm"):
        try:
            os.remove(path + ext)
        except FileNotFoundError:
            pass


SAMPLE_RESPONSE = {
    "items": [
        {
            "title": "<b>금리</b> 인상 단행",
            "originallink": "https://news.example.com/1",
            "link": "https://n.news.naver.com/article/1",
            "description": "한국은행이 <b>기준금리</b>를 25bp 올렸다.",
            "pubDate": "Fri, 15 May 2026 08:00:00 +0900",
        },
        {
            "title": "환율 급등",
            "originallink": "https://news.example.com/2",
            "link": "https://n.news.naver.com/article/2",
            "description": "원달러 환율이 1400원을 돌파했다.",
            "pubDate": "Fri, 15 May 2026 09:00:00 +0900",
        },
    ],
}


def test_strip_html_and_decode_entities():
    out = news_collector._clean(' <b>"테스트"</b> &amp; 아이템 ')
    assert out == '"테스트" & 아이템'


def test_search_news_parses_items(tmp_db):
    fake_resp = MagicMock()
    fake_resp.json.return_value = SAMPLE_RESPONSE
    fake_resp.raise_for_status.return_value = None
    with patch.object(news_collector.requests, "get", return_value=fake_resp):
        items = news_collector.search_news("금리", display=10)
    assert len(items) == 2
    assert items[0]["title"] == "금리 인상 단행"
    assert items[0]["summary"].startswith("한국은행")


def test_collect_for_category_inserts(tmp_db):
    fake_resp = MagicMock()
    fake_resp.json.return_value = SAMPLE_RESPONSE
    fake_resp.raise_for_status.return_value = None
    with patch.object(news_collector.requests, "get", return_value=fake_resp):
        news_collector.collect_for_category("economy", seed_keywords=["금리"], per_keyword=10)
    rows = db_module.list_news_articles(category="economy", days=7)
    assert {r["link"] for r in rows} == {
        "https://n.news.naver.com/article/1",
        "https://n.news.naver.com/article/2",
    }


def test_collect_dedupes_existing(tmp_db):
    db_module.add_news_article({
        "category": "economy", "title": "기존",
        "link": "https://n.news.naver.com/article/1", "summary": ""
    })
    fake_resp = MagicMock()
    fake_resp.json.return_value = SAMPLE_RESPONSE
    fake_resp.raise_for_status.return_value = None
    with patch.object(news_collector.requests, "get", return_value=fake_resp):
        news_collector.collect_for_category("economy", seed_keywords=["금리"])
    rows = db_module.list_news_articles(category="economy", days=7)
    # 1 pre-existing + 1 newly added (the other link); UNIQUE link blocks duplicate insert
    assert len(rows) == 2