import json
import os
from datetime import date, datetime
from unittest.mock import MagicMock, patch

from PIL import Image as PILImage

from src.models import Article, Image
from src.scheduler import SchedulerManager


def test_scheduler_starts_fetch_job(app):
    with app.app_context():
        mgr = SchedulerManager(app)
        mgr.start()
        jobs = mgr.scheduler.get_jobs()
        job_ids = [j.id for j in jobs]
        assert "rss_fetch" in job_ids
        mgr.shutdown()


def test_scheduler_update_fetch_interval(app):
    with app.app_context():
        mgr = SchedulerManager(app)
        mgr.start()
        mgr.update_fetch_interval(2)
        job = mgr.scheduler.get_job("rss_fetch")
        assert job is not None
        assert job.trigger.interval.total_seconds() == 7200
        mgr.shutdown()


def test_scheduler_enable_auto_publish(app):
    with app.app_context():
        mgr = SchedulerManager(app)
        mgr.start()
        mgr.enable_auto_publish(day_of_week="sun", hour=6, minute=0,
                                cover_method="text")
        job = mgr.scheduler.get_job("auto_publish")
        assert job is not None
        mgr.shutdown()


def test_scheduler_disable_auto_publish(app):
    with app.app_context():
        mgr = SchedulerManager(app)
        mgr.start()
        mgr.enable_auto_publish(day_of_week="sun", hour=6, minute=0,
                                cover_method="text")
        mgr.disable_auto_publish()
        job = mgr.scheduler.get_job("auto_publish")
        assert job is None
        mgr.shutdown()


def test_scheduler_get_status(app):
    with app.app_context():
        mgr = SchedulerManager(app)
        mgr.start()
        status = mgr.get_status()
        assert status["running"] is True
        assert "rss_fetch" in status
        mgr.shutdown()


def test_auto_publish_passes_ordered_image_paths_to_generate_cover(app, tmp_path, db):
    """First image per article in pub_date order passed to generate_cover."""
    os.makedirs(tmp_path, exist_ok=True)
    img1 = str(tmp_path / "a1.jpg")
    img2 = str(tmp_path / "a2.jpg")
    for p in (img1, img2):
        PILImage.new("RGB", (100, 100), color="blue").save(p, format="JPEG")

    with app.app_context():
        a1 = Article(
            guid="g1",
            title="Earlier Article",
            author="A",
            pub_date=datetime(2026, 4, 6, 10, 0),
            categories=json.dumps(["Government"]),
            link="http://example.com/1",
            content_html="<p>x</p>",
        )
        a2 = Article(
            guid="g2",
            title="Later Article",
            author="B",
            pub_date=datetime(2026, 4, 7, 10, 0),
            categories=json.dumps(["Culture"]),
            link="http://example.com/2",
            content_html="<p>y</p>",
        )
        db.session.add_all([a1, a2])
        db.session.flush()
        db.session.add_all(
            [
                Image(
                    article_id=a1.id,
                    original_url="https://example.com/1.jpg",
                    local_path=img1,
                    width=100,
                    height=100,
                ),
                Image(
                    article_id=a2.id,
                    original_url="https://example.com/2.jpg",
                    local_path=img2,
                    width=100,
                    height=100,
                ),
            ]
        )
        db.session.commit()

    mock_cover = MagicMock(return_value="/fake/cover.jpg")
    mock_epub = MagicMock(return_value="/fake/issue.epub")

    with patch("src.scheduler.date") as mock_date, patch(
        "src.cover.generate_cover", mock_cover
    ), patch("src.epub_builder.build_epub", mock_epub):
        mock_date.today.return_value = date(2026, 4, 6)
        mgr = SchedulerManager(app)
        mgr._run_auto_publish()

    mock_cover.assert_called_once()
    args = mock_cover.call_args[0]
    assert args[0] == "text"
    assert args[4] == ["Earlier Article", "Later Article"]
    assert args[5] == [img1, img2]