from goodnews.db import connect, init_db
from goodnews import digest, email_send


def _seed(c, n=5, date="2026-06-09"):
    bid = c.execute("INSERT INTO daily_briefs (brief_date, title) VALUES (?, 't')", (date,)).lastrowid
    for i in range(1, n + 1):
        c.execute("INSERT INTO sources (id,name,feed_url,active,content_visible) VALUES (?,?,?,1,1)",
                  (i, f"Src{i}", f"http://s{i}/f"))
        c.execute("INSERT INTO articles (id,source_id,canonical_url,title,url_hash) VALUES (?,?,?,?,?)",
                  (i, i, f"http://a/{i}", f"Title {i}", f"h{i}"))
        c.execute("INSERT INTO article_scores (article_id,accepted,reason_text) VALUES (?,1,?)", (i, f"reason {i}"))
        c.execute("INSERT INTO article_summaries (article_id,summary) VALUES (?,?)", (i, f"summary {i}"))
        c.execute("INSERT INTO daily_brief_items (brief_id,article_id,rank) VALUES (?,?,?)", (bid, i, i))
    c.execute("INSERT INTO users (id,email,digest_enabled) VALUES (1,'reader@x.com',1)")
    c.commit()
    return date


def test_build_digest_is_calm_and_dated():
    items = [{"id": 1, "title": "Good thing", "canonical_url": "http://a/1", "source": "Src", "summary": "nice", "reason_text": "wonder", "paywalled": False}]
    subject, text, html = digest.build_digest(items, "2026-06-09", "http://ub/unsub")
    assert "Tuesday's Upbeat Bytes" in subject and "1 calm read" in subject
    assert "You're caught up" in text and "http://ub/unsub" in text
    assert "Good thing" in html and "Read on Upbeat Bytes" in html and "Unsubscribe" in html
    assert "you missed" not in (text + html).lower()  # no guilt language


def test_send_due_digests_sends_dedupes_and_skips(monkeypatch, tmp_path):
    sent = []
    monkeypatch.setattr(email_send, "send_email", lambda to, subj, text, html=None: sent.append(to))
    c = connect(str(tmp_path / "d.db")); init_db(c)
    date = _seed(c, n=5)
    monkeypatch.setattr(digest, "local_today", lambda: date)
    # force=True bypasses the morning window
    assert digest.send_due_digests(c, force=True) == 1
    assert sent == ["reader@x.com"]
    assert c.execute("SELECT item_count FROM digest_sends WHERE user_id=1").fetchone()[0] == 5
    # dedupe: a second run sends nothing
    assert digest.send_due_digests(c, force=True) == 0
    # unsub token was generated on send
    assert c.execute("SELECT digest_unsub_token FROM users WHERE id=1").fetchone()[0]


def test_send_skips_thin_day(monkeypatch, tmp_path):
    monkeypatch.setattr(email_send, "send_email", lambda *a, **k: (_ for _ in ()).throw(AssertionError("should not send")))
    c = connect(str(tmp_path / "d.db")); init_db(c)
    date = _seed(c, n=3)  # below MIN_ITEMS (4)
    monkeypatch.setattr(digest, "local_today", lambda: date)
    assert digest.send_due_digests(c, force=True) == 0


def test_send_respects_opt_out(monkeypatch, tmp_path):
    sent = []
    monkeypatch.setattr(email_send, "send_email", lambda to, *a, **k: sent.append(to))
    c = connect(str(tmp_path / "d.db")); init_db(c)
    date = _seed(c, n=5)
    c.execute("UPDATE users SET digest_enabled=0 WHERE id=1"); c.commit()
    monkeypatch.setattr(digest, "local_today", lambda: date)
    assert digest.send_due_digests(c, force=True) == 0 and sent == []