import os, importlib
from unittest.mock import patch
from fastapi.testclient import TestClient

def _client(monkeypatch):
    monkeypatch.setenv("INTERNAL_API_KEY", "SECRET")
    from app import auth as _a
    importlib.reload(_a)
    from app.main import app
    return TestClient(app)

_ARTICLE = {"articleNo": "N100", "tradeTypeName": "전세", "dealOrWarrantPrc": "2억 9,000",
            "area2": "42.5", "floorInfo": "5/15", "articleName": "OO아파트",
            "buildingName": "OO", "cortarNo": "1159010100"}

def test_ingest_auth(monkeypatch):
    c = _client(monkeypatch)
    # 헤더 없음 — FastAPI Header(...)는 dependency 실행 전 자체 검증하므로 422.
    # test_internal_targets.py의 동일 패턴과 일치(같은 서비스 선례).
    assert c.post("/api/internal/realestate/listings-ingest", json={"batches": []}).status_code in (401, 422)
    assert c.post("/api/internal/realestate/listings-ingest",
                  headers={"X-Internal-Key": "WRONG"}, json={"batches": []}).status_code == 401

def test_ingest_upserts_and_matches(monkeypatch):
    c = _client(monkeypatch)
    # TestClient는 BackgroundTask를 응답 반환 전 동기 실행하므로 patch된 notify는
    # c.post()가 리턴하는 시점에 이미 호출되어 있다.
    with patch("app.internal_router.notify_new_listings", return_value={"sent": 1, "sent_ids": [1]}) as noti:
        r = c.post("/api/internal/realestate/listings-ingest",
                   headers={"X-Internal-Key": "SECRET"},
                   json={"fetched_at": "2026-07-09T00:00:00Z",
                         "batches": [{"dong": "신대방동", "articles": [_ARTICLE]}]})
    assert r.status_code == 200
    body = r.json()
    assert body["received"] == 1 and body["new"] == 1 and body["queued"] is True
    assert noti.call_count == 1
    # 저장 확인
    from app import db
    ls = db.get_listings()
    assert any(l["article_no"] == "N100" and l["dong"] == "신대방동" for l in ls)

def test_ingest_idempotent(monkeypatch):
    c = _client(monkeypatch)
    payload = {"batches": [{"dong": "신대방동", "articles": [_ARTICLE]}]}
    with patch("app.internal_router.notify_new_listings", return_value={"sent": 0}):
        c.post("/api/internal/realestate/listings-ingest", headers={"X-Internal-Key": "SECRET"}, json=payload)
        r2 = c.post("/api/internal/realestate/listings-ingest", headers={"X-Internal-Key": "SECRET"}, json=payload)
    assert r2.json()["new"] == 0   # 재push → 신규 0

def test_ingest_holds_match_notify_lock(monkeypatch):
    from app import internal_router as ir
    from app.pipeline_lock import match_notify_lock
    c = _client(monkeypatch)
    holds = {}
    def fake_notify():
        holds["locked"] = match_notify_lock.locked()
        return {"sent": 0}
    monkeypatch.setattr(ir, "notify_new_listings", fake_notify)
    c.post("/api/internal/realestate/listings-ingest", headers={"X-Internal-Key": "SECRET"},
           json={"batches": [{"dong": "신대방동", "articles": [_ARTICLE]}]})
    assert holds["locked"] is True   # 알림 시점에 락 보유(임계구역 직렬화 증명)


# ── 근본원인 fix: 네이버 article에 cortarNo 없으면 dong_code=None → 시세 매칭 불가 ──

_ARTICLE_NO_CORTAR = {"articleNo": "N200", "tradeTypeName": "전세", "dealOrWarrantPrc": "2억 9,000",
                      "area2": "42.5", "floorInfo": "5/15", "articleName": "OO아파트",
                      "buildingName": "OO"}  # cortarNo 없음 — 실제 네이버 응답 케이스


def test_ingest_derives_dong_code_from_dong_when_cortarno_missing(monkeypatch):
    c = _client(monkeypatch)
    with patch("app.internal_router.notify_new_listings", return_value={"sent": 0}):
        r = c.post("/api/internal/realestate/listings-ingest",
                   headers={"X-Internal-Key": "SECRET"},
                   json={"batches": [{"dong": "신길동", "articles": [_ARTICLE_NO_CORTAR]}]})
    assert r.status_code == 200
    from app import db
    ls = db.get_listings()
    saved = next(l for l in ls if l["article_no"] == "N200")
    assert saved["dong_code"] == "11560"   # 신길동 → 영등포구 5자리 lawd_code로 유도