"""Word of the Day: LLM-proposed words validated against the dictionary (mocked),
harvest dedupes + drops unknowns, audio cached when present, deterministic pick."""
import json

import pytest

from goodnews import wotd
from goodnews.db import connect, init_db

FAKE_DICT = {
    "serene": {"word": "serene", "part_of_speech": "adjective", "phonetic": "/səˈriːn/",
               "audio_url": "https://a/serene.mp3", "definition": "calm, peaceful, and untroubled",
               "examples": ["a serene mountain lake"]},
    "dawn": {"word": "dawn", "part_of_speech": "noun", "phonetic": "/dɔːn/",
             "audio_url": None, "definition": "the first appearance of light in the sky", "examples": []},
}


class FakeClient:
    def chat_text(self, messages):
        return '{"words": ["serene", "dawn", "xyzzyq"]}'   # xyzzyq isn't a real word


@pytest.fixture
def conn(tmp_path, monkeypatch):
    monkeypatch.setenv("GOODNEWS_WOTD_AUDIO", str(tmp_path / "audio"))
    monkeypatch.setattr(wotd, "_lookup", lambda w: FAKE_DICT.get(w))               # no dictionary network
    monkeypatch.setattr(wotd, "_cache_audio", lambda url, word: f"{word}.mp3" if url else None)
    c = connect(":memory:"); init_db(c)
    yield c
    c.close()


def test_harvest_validates_dedupes_and_caches_audio(conn):
    r = wotd.harvest(conn, FakeClient())
    assert r["added"] == 2                                  # serene + dawn; the nonsense word dropped
    assert wotd.harvest(conn, FakeClient())["added"] == 0   # idempotent (word is UNIQUE)
    assert conn.execute("SELECT audio_file FROM wotd_pool WHERE word='serene'").fetchone()[0] == "serene.mp3"
    assert conn.execute("SELECT audio_file FROM wotd_pool WHERE word='dawn'").fetchone()[0] is None


def test_pick_caches_marks_shown_idempotent(conn):
    wotd.harvest(conn, FakeClient())
    a = wotd.pick_daily(conn, feature_date="2026-06-22")
    assert a and a["word"] in ("serene", "dawn") and a["definition"]
    assert json.loads(a["examples"]) == FAKE_DICT[a["word"]]["examples"]
    shown = conn.execute("SELECT shown_at FROM wotd_pool WHERE id=?", (a["pool_id"],)).fetchone()[0]
    assert shown == "2026-06-22"
    assert wotd.pick_daily(conn, feature_date="2026-06-22")["pool_id"] == a["pool_id"]


def test_featured_pinned(conn):
    wotd.harvest(conn, FakeClient())
    conn.execute("UPDATE wotd_pool SET featured=1 WHERE word='dawn'"); conn.commit()
    assert wotd.pick_daily(conn, feature_date="2026-06-22", force=True)["word"] == "dawn"


def test_get_today_never_empty(conn):
    wotd.harvest(conn, FakeClient())
    a = wotd.pick_daily(conn, feature_date="2026-06-22")
    assert wotd.get_today(conn, "2099-01-01")["pool_id"] == a["pool_id"]


def test_run_daily_bootstraps(conn):
    r = wotd.run_daily(conn, client=FakeClient())
    assert r["pool"] == 2 and r["picked"] in ("serene", "dawn")