"""Retry-on-empty guard — scrape-flaky boards (Naukri-feed, curious_coder LinkedIn) intermittently
return 0; one fresh retry rescues the transient case. RCA: the same input flaked 0 then returned 15."""
import asyncio

from app.engine import search


def _run(coro):
    return asyncio.run(coro)


def test_retry_on_empty_recovers_transient_zero(monkeypatch):
    calls = {"n": 0}

    async def fake_run_actor(actor, inp, cache_mode=None):
        calls["n"] += 1
        # first call flakes (0), retry returns a real job
        if calls["n"] == 1:
            return []
        return [{"profile_job_title": "Data Architect", "branch_company_name": "Acme",
                 "branch_location_city_name": "Delhi", "skills": ["python"], "job_id": "1"}]

    monkeypatch.setattr(search, "run_actor", fake_run_actor)
    key, jobs = _run(search._fetch_board("workindia", {"title": "Data Architect", "location": ["Delhi · India"]}))
    assert calls["n"] == 2, "a board returning 0 must be retried exactly once"
    assert len(jobs) == 1, "the retry's jobs are used"


def test_no_retry_when_first_call_succeeds(monkeypatch):
    calls = {"n": 0}

    async def fake_run_actor(actor, inp, cache_mode=None):
        calls["n"] += 1
        return [{"profile_job_title": "X", "branch_company_name": "Y",
                 "branch_location_city_name": "Delhi", "skills": [], "job_id": "1"}]

    monkeypatch.setattr(search, "run_actor", fake_run_actor)
    _run(search._fetch_board("workindia", {"title": "X", "location": ["Delhi · India"]}))
    assert calls["n"] == 1, "a board that returns jobs is NOT retried (no extra cost)"


def test_genuinely_empty_returns_empty_after_one_retry(monkeypatch):
    calls = {"n": 0}

    async def fake_run_actor(actor, inp, cache_mode=None):
        calls["n"] += 1
        return []   # genuinely empty (e.g. WorkIndia for a tech role)

    monkeypatch.setattr(search, "run_actor", fake_run_actor)
    key, jobs = _run(search._fetch_board("workindia", {"title": "AI Architect", "location": ["Delhi · India"]}))
    assert calls["n"] == 2 and jobs == [], "retry once, then accept the empty result (no infinite loop)"