"""Tests for app/services/diagnose.py — parse_time_window."""
from __future__ import annotations

from datetime import datetime, timezone
from unittest.mock import patch


from app.services.diagnose import diagnose, parse_time_window


def test_no_time_phrase_falls_back_to_last_60_min():
    with patch("app.services.diagnose._HAS_DATEPARSER", True), \
         patch("app.services.diagnose._search_dates", return_value=None):
        since, until, keywords = parse_time_window("plex stopped playing audio")
    assert since is not None and until is not None
    assert keywords == "plex stopped playing audio"
    diff = (datetime.fromisoformat(until) - datetime.fromisoformat(since)).total_seconds()
    assert abs(diff - 3600) < 5


def test_time_phrase_detected_produces_60min_window():
    dt = datetime(2026, 5, 11, 14, 0, tzinfo=timezone.utc)
    with patch("app.services.diagnose._HAS_DATEPARSER", True), \
         patch("app.services.diagnose._search_dates", return_value=[("around 2pm", dt)]):
        since, until, keywords = parse_time_window("plex stopped audio around 2pm")
    diff = (datetime.fromisoformat(until) - datetime.fromisoformat(since)).total_seconds()
    assert abs(diff - 3600) < 5


def test_time_phrase_stripped_from_keywords():
    dt = datetime(2026, 5, 11, 14, 0, tzinfo=timezone.utc)
    with patch("app.services.diagnose._HAS_DATEPARSER", True), \
         patch("app.services.diagnose._search_dates", return_value=[("around 2pm", dt)]):
        _, _, keywords = parse_time_window("plex stopped audio around 2pm")
    assert "around 2pm" not in keywords
    assert "plex" in keywords


def test_no_dateparser_falls_back_to_60min():
    with patch("app.services.diagnose._HAS_DATEPARSER", False), \
         patch("app.services.diagnose._search_dates", None):
        since, until, keywords = parse_time_window("plex stopped playing audio")
    assert keywords == "plex stopped playing audio"
    diff = (datetime.fromisoformat(until) - datetime.fromisoformat(since)).total_seconds()
    assert abs(diff - 3600) < 5


def test_keywords_cleaned_of_extra_spaces():
    dt = datetime(2026, 5, 11, 14, 0, tzinfo=timezone.utc)
    with patch("app.services.diagnose._HAS_DATEPARSER", True), \
         patch("app.services.diagnose._search_dates", return_value=[("around 2pm", dt)]):
        _, _, keywords = parse_time_window("plex stopped audio around 2pm extra")
    assert "  " not in keywords


def test_diagnose_with_explicit_window_sets_time_detected(tmp_path):
    from app.ingest.pipeline import ensure_schema
    db = tmp_path / "test.db"
    ensure_schema(db)
    result = diagnose(db, query="plex", since="2026-05-11T14:00:00+00:00", until="2026-05-11T15:00:00+00:00")
    assert result["summary"]["time_detected"] is True
    assert result["summary"]["total"] == 0  # empty DB
    assert result["summary"]["window_start"] == "2026-05-11T14:00:00+00:00"