"""
Tests for indexer/title_parse.py — synthetic filenames only, one per
docs/mediacenter.md §3.3/§3.4 rule. The real ~1950-file library validation
is a manual acceptance step (§11), not something this repo's corpus holds.
"""

from meshbay_node.indexer.title_parse import (
    ParsedName,
    naive_title,
    parse_episode_filename,
    parse_movie_filename,
    season_from_folder_name,
    sequel_variants,
)


# ── §3.3 row: plain, well-formed movie filename ──────────────────────────────

def test_plain_movie_filename_parses_confidently():
    r = parse_movie_filename("The.Great.Adventure.2015.1080p.BluRay.x264.mkv")
    assert r.display_title == "The Great Adventure"
    assert r.year == 2015
    assert r.confidence is True


# ── §3.3 row 1: real title in alternative_title ──────────────────────────────

def test_franchise_numeric_code_exposes_alternative_title():
    r = parse_movie_filename("Franchise.007.-.The.Real.Subtitle.1999.720p.mkv")
    assert r.year == 1999
    # guessit lands the franchise fragment in title and the real subtitle in
    # alternative_title — both must be surfaced so a caller (tmdb.py) can
    # try either, per the design doc's "search both fields" fix.
    assert r.alt_title is not None


# ── §3.3 row 2: hyphenated title split before a parenthesized year ───────────

def test_naive_title_normalizes_hyphens_dots_and_underscores():
    nt = naive_title("Hero-Name.(2002).DVDRip.XviD-GROUP.avi")
    assert "-" not in nt
    assert "." not in nt
    assert "_" not in nt
    assert "2002" not in nt  # the year itself is stripped, not just its parens
    assert "Hero" in nt and "Name" in nt


# ── §3.3 row 3: French edition vocabulary stuck to the title ─────────────────

def test_french_edition_phrases_are_stripped():
    r = parse_movie_filename("Some.Movie.Version.Longue.2010.mkv")
    assert "version" not in (r.display_title or "").lower()
    assert "longue" not in (r.display_title or "").lower()

    r2 = parse_movie_filename("Autre.Film.Remasterise.1998.mkv")
    assert "remasteris" not in (r2.display_title or "").lower()


# ── §3.3 row 4: trailing sequel digit / Roman numeral ────────────────────────

def test_sequel_variants_strips_digit_and_offers_roman_numeral():
    variants = sequel_variants("Some Sequel 2")
    assert "Some Sequel" in variants
    assert "Some Sequel II" in variants


def test_sequel_variants_empty_when_no_trailing_digit():
    assert sequel_variants("Some Movie") == []


# ── §3.3 row 6: no usable title at all ───────────────────────────────────────

def test_low_confidence_when_no_title_or_year():
    r = parse_movie_filename("abc123.mkv")
    assert r.confidence is False
    # the mandated fallback is always available regardless
    assert r.naive_title == "abc123"


# ── §3.2/§3.4: episode filename with no show name at all ─────────────────────

def test_episode_only_filename_has_no_title_but_has_season_episode():
    r = parse_episode_filename("S08E02.SUBFRENCH.720p.mkv")
    assert r.display_title is None
    assert r.season == 8
    assert r.episode == 2
    # confidence is False (no title yet) — the indexer must supply one from
    # a representative sibling filename in the same folder, per §3.4.
    assert r.confidence is False


def test_episode_filename_with_show_name_parses_confidently():
    r = parse_episode_filename("Some.Show.Name.S02E05.720p.WEB.mkv")
    assert r.display_title == "Some Show Name"
    assert r.season == 2
    assert r.episode == 5
    assert r.confidence is True


# ── §3.4: season-like ancestor folders, including non-English vocabulary ────

def test_season_folder_english():
    assert season_from_folder_name("Season 2") == 2


def test_season_folder_french_word():
    assert season_from_folder_name("Saison 3") == 3


def test_season_folder_roman_numeral():
    assert season_from_folder_name("Saison IV") == 4


def test_season_folder_book_word_roman_numeral():
    # Some shows number their seasons by "book" (Roman numerals) rather
    # than "season"/"saison" — real, observed vocabulary (§3.4).
    assert season_from_folder_name("Livre I") == 1
    assert season_from_folder_name("Livre VI") == 6


def test_specials_folder_maps_to_season_zero():
    assert season_from_folder_name("Specials") == 0
    assert season_from_folder_name("Bonus") == 0
    assert season_from_folder_name("Extras") == 0


def test_non_season_folder_name_returns_none():
    assert season_from_folder_name("Some Show Name") is None


def test_parsed_name_is_a_plain_dataclass():
    # sanity: constructible with just the one required field, per the
    # "None => caller must supply from elsewhere" contract.
    p = ParsedName(display_title=None)
    assert p.confidence is False
    assert p.naive_title == ""