import pytest
from astroparse_api.references import parse_references, _build_bibcode

# Fixtures: known reference formats from real papers
REF_APJL = (
    "Carnall, A. C., McLure, R. J., Dunlop, J. S., & Davé, R. 2018, "
    "ApJL, 873, L14. doi:10.3847/2041-8213/ab0a7e"
)
REF_MNRAS = (
    "Schreiber, C., Glazebrook, K., & Nanayakkara, T. 2018, MNRAS, 489, 3023. "
    "arXiv:1906.08978"
)
REF_ARXIV_ONLY = (
    "Weibel, A., Oesch, P. A., Barrufet, L. et al. 2024, arXiv:2409.03829"
)

CORPUS_ARXIV = {"1906.08978", "2409.03829"}
CORPUS_BIBCODES = {"2018ApJ...873L..14C"}


def test_parse_references_extracts_year():
    refs, _ = parse_references(REF_APJL + "\n\n" + REF_MNRAS, set(), set())
    years = {r.year for r in refs}
    assert 2018 in years


def test_parse_references_extracts_arxiv():
    refs, _ = parse_references(REF_MNRAS, CORPUS_ARXIV, set())
    assert refs[0].arxiv == "1906.08978"


def test_arxiv_match_sets_corpus_match():
    refs, _ = parse_references(REF_MNRAS, CORPUS_ARXIV, set())
    assert refs[0].corpus_match is True


def test_no_arxiv_no_bibcode_match_is_display_only():
    refs, _ = parse_references(REF_APJL, set(), set())
    assert refs[0].corpus_match is False


def test_bibcode_construction_apjl():
    bc = _build_bibcode("2018", "ApJL", "873", "L14", "C")
    assert bc == "2018ApJ...873L..14C"


def test_bibcode_construction_mnras():
    bc = _build_bibcode("2018", "MNRAS", "489", "3023", "S")
    assert bc == "2018MNRAS.489.3023S"


def test_cite_index_built():
    _, idx = parse_references(REF_APJL + "\n\n" + REF_ARXIV_ONLY, set(), set())
    keys = list(idx.keys())
    assert any("carnall" in k for k in keys)
    assert any("weibel" in k for k in keys)


def test_multiple_refs_same_author_year_both_indexed():
    ref_a = "Smith, J. A. 2020, ApJ, 900, 1"
    ref_b = "Smith, J. B. 2020, ApJ, 901, 5"
    _, idx = parse_references(ref_a + "\n\n" + ref_b, set(), set())
    keys = list(idx.keys())
    assert any("smith" in k for k in keys)


def test_empty_raw_refs_returns_empty():
    refs, idx = parse_references("", set(), set())
    assert refs == []
    assert idx == {}


def test_bibcode_match_sets_corpus_match():
    refs, _ = parse_references(REF_APJL, set(), CORPUS_BIBCODES)
    assert refs[0].corpus_match is True
    assert refs[0].bibcode == "2018ApJ...873L..14C"