import json

import pytest

from app.crawler import detect_rules, extract_events


def base_source(**overrides):
    value = {"url": "https://example.org/events", "timezone": "Australia/Sydney", "item_selector": "json-ld", "title_selector": "", "date_selector": "", "time_selector": "", "link_selector": "", "description_selector": "", "location_selector": "", "date_format": "", "recurring_weekly": 0}
    value.update(overrides)
    return value


def test_jsonld_extracts_graph_event_with_end_address_and_relative_url():
    payload = {"@graph": [{"@type": "Event", "name": "Gallery Talk", "startDate": "2026-09-07T18:00:00+10:00", "endDate": "2026-09-07T20:00:00+10:00", "description": "A talk", "url": "/talk", "location": {"address": {"streetAddress": "1 Art St", "addressLocality": "Wollongong", "addressRegion": "NSW", "postalCode": "2500"}}}]}
    html = f'<script type="application/ld+json">{json.dumps(payload)}</script>'
    event = extract_events(html, base_source())[0]
    assert event.title == "Gallery Talk"
    assert event.ends_at.hour == 20
    assert event.address == "1 Art St, Wollongong, NSW, 2500"
    assert event.url == "https://example.org/talk"


def test_jsonld_ignores_invalid_and_missing_dates():
    html = '''<script type="application/ld+json">not json</script>
    <script type="application/ld+json">[{"@type":"Event","name":"No date"},{"@type":"Event","name":"Good","startDate":"2026-09-08"}]</script>'''
    events = extract_events(html, base_source())
    assert [event.title for event in events] == ["Good"]


def test_html_extraction_skips_invalid_sibling():
    html = '''<article><h2>Bad</h2><time>not a date</time></article>
    <article><h2>Good</h2><time>9 Sep 2026 7pm</time><a href="/good">Details</a></article>'''
    source = base_source(item_selector="article", title_selector="h2", date_selector="time", link_selector="a")
    events = extract_events(html, source)
    assert len(events) == 1
    assert events[0].title == "Good"


def test_detector_prefers_jsonld():
    html = '<script type="application/ld+json">{"@type":"Event","name":"One","startDate":"2026-09-08"}</script>'
    rules, events, message = detect_rules(html, "https://example.org/events")
    assert rules["item_selector"] == "json-ld"
    assert len(events) == 1
    assert "JSON-LD" in message


def test_detector_finds_repeated_html_cards():
    html = '''<article class="event"><h2 class="title">One</h2><time>8 Sep 2027 7pm</time><a href="/one">More</a></article>
    <article class="event"><h2 class="title">Two</h2><time>9 Sep 2027 8pm</time><a href="/two">More</a></article>'''
    rules, events, message = detect_rules(html, "https://example.org/events")
    assert len(events) >= 2
    assert rules["item_selector"]
    assert rules["title_selector"]
    assert rules["date_selector"]
    assert "Guessed CSS" in message


def test_detector_rejects_social_feed_false_positive():
    html = '''<div class="sbi_item"><a>Party this Friday</a><span>Friday night</span></div>
    <div class="sbi_item"><a>More next Friday</a><span>Friday night</span></div>'''
    with pytest.raises(Exception, match="No repeated event-like"):
        detect_rules(html, "https://example.org/events")