from datetime import UTC, datetime

from soapbox import db
from soapbox.content import dump_frontmatter, parse_frontmatter
from soapbox.images import process_image
from soapbox.render import relative_to, render_markdown
from soapbox.slug import slugify, unique_slug
from tests.conftest import png_bytes


def test_slugify_norwegian():
    assert slugify("Grønt er skjønt: blåbær & øl!") == "grønt-er-skjønt-blåbær-øl"
    assert slugify("Hello, World_2!") == "hello-world-2"
    assert slugify("Blåbær") == slugify("Bla\u030abær")  # NFD → NFC
    assert slugify("日本語 タイトル") == "日本語-タイトル"
    assert slugify("   ") == "post"
    assert unique_slug("a", {"a", "a-2"}) == "a-3"


def test_frontmatter_roundtrip():
    meta = {"title": 'Tittel: med "anførsel"', "date": "2026-01-01T00:00:00+00:00", "draft": True}
    text = dump_frontmatter(meta, "# Hei\n\nbrødtekst")
    parsed, body = parse_frontmatter(text)
    assert parsed == meta
    assert body.strip() == "# Hei\n\nbrødtekst"


def test_relative_paths():
    assert relative_to("", "post1/") == "post1/"
    assert relative_to("post1/", "") == "../"
    assert relative_to("gjest/post1/", "post2/") == "../../post2/"
    assert relative_to("gjest/post1/", "theme/style.css") == "../../theme/style.css"


def test_markdown_safe_and_relative():
    html = render_markdown("<script>x</script>\n\n[a](/post2/#x) ![](b.jpg)", "g/p/")
    assert "<script>" not in html
    assert 'href="../../post2/#x"' in html
    assert 'src="b.jpg"' in html
    assert "//example.com" in render_markdown("[x](//example.com)")


def test_image_downscale():
    data, ext = process_image(png_bytes((3000, 1500)), 2000)
    import io

    from PIL import Image

    img = Image.open(io.BytesIO(data))
    assert ext == ".png" and img.size == (2000, 1000)


def test_password_hashing(tmp_path):
    conn = db.connect(tmp_path / "x.sqlite")
    db.create_user(conn, "a", "passord123", db.ROLE_OWNER)
    assert db.authenticate(conn, "a", "passord123")
    assert db.authenticate(conn, "a", "feil") is None
    assert db.has_owner(conn)
    assert datetime.now(UTC)  # sanity: UTC alias tilgjengelig


def test_excerpt_plain_text():
    from soapbox.render import excerpt

    assert (
        excerpt("Hei **verden**. Se [forsiden](/) og ![alt](x.jpg) _her_.")
        == "Hei verden. Se forsiden og her."
    )
    assert excerpt("# Overskrift\n\n```\nkode\n```\n\nTekst") == "Tekst"
    assert excerpt("x " * 200, 50).endswith("…")