"""Fechas aproximadas de discovery: bandera upload_date_approx.

Matriz de precedencia de upsert_videos + upgrade approx->real de
set_upload_date + conversion timestamp -> YYYYMMDD en discover.
Spec: docs/superpowers/specs/2026-08-22-approximate-upload-dates-design.md
"""

from yt_scraper.store import Store, VideoRef


def _ref(vid, date=None, approx=0, ch="ch1"):
    return VideoRef(
        video_id=vid,
        channel_id=ch,
        title="t " + vid,
        url=f"https://youtu.be/{vid}",
        upload_date=date,
        date_approx=approx,
    )


def _store(tmp_path):
    s = Store(tmp_path / "test.db")
    s.upsert_channel("ch1", None, "Canal de prueba")
    return s


def test_approx_into_empty(tmp_path):
    s = _store(tmp_path)
    s.upsert_videos([_ref("v1", date="20260820", approx=1)])
    row = s.get_video("v1")
    assert row.upload_date == "20260820"
    assert row.upload_date_approx == 1


def test_real_not_downgraded_by_approx(tmp_path):
    s = _store(tmp_path)
    s.upsert_videos([_ref("v1", date="20240101", approx=0)])
    s.upsert_videos([_ref("v1", date="20260820", approx=1)])
    row = s.get_video("v1")
    assert row.upload_date == "20240101"
    assert row.upload_date_approx == 0


def test_approx_refreshed_by_newer_approx(tmp_path):
    s = _store(tmp_path)
    s.upsert_videos([_ref("v1", date="20260101", approx=1)])
    s.upsert_videos([_ref("v1", date="20260820", approx=1)])
    row = s.get_video("v1")
    assert row.upload_date == "20260820"
    assert row.upload_date_approx == 1


def test_extraction_upgrades_approx_to_real(tmp_path):
    s = _store(tmp_path)
    s.upsert_videos([_ref("v1", date="20260820", approx=1)])
    s.set_upload_date("v1", "20260818")
    row = s.get_video("v1")
    assert row.upload_date == "20260818"
    assert row.upload_date_approx == 0


def test_set_upload_date_still_skips_existing_real(tmp_path):
    s = _store(tmp_path)
    s.upsert_videos([_ref("v1", date="20240101", approx=0)])
    s.set_upload_date("v1", "20260818")
    assert s.get_video("v1").upload_date == "20240101"


def test_migration_defaults_flag_to_zero(tmp_path):
    # Filas creadas por la via vieja (INSERT sin la columna) quedan con 0.
    s = _store(tmp_path)
    s.upsert_videos([_ref("v2", date=None, approx=0)])
    row = s.get_video("v2")
    assert not row.upload_date_approx


# --- conversion en discover -------------------------------------------------

from yt_scraper.discover import _entry_upload_date


def test_entry_upload_date_prefers_exact():
    assert _entry_upload_date({"upload_date": "20240101"}) == ("20240101", 0)


def test_entry_upload_date_from_timestamp():
    ts = 1716115200  # 2024-05-19 12:00 UTC
    assert _entry_upload_date({"timestamp": ts}) == ("20240519", 1)


def test_entry_upload_date_none():
    assert _entry_upload_date({}) == (None, 0)