"""The project's own pages. Every one of them has to follow the spec."""

from pathlib import Path
import shutil
import subprocess
import sys

import pytest

from mews.lint import validate_file

ROOT = Path(__file__).resolve().parent.parent
SITE = ROOT / "site"


@pytest.fixture(scope="session")
def built_site():
    """Build the Pelican site once per test session, and return its output dir."""
    result = subprocess.run(
        [shutil.which("uv"), "run", "pelican", "content", "-o", "output"],
        cwd=SITE,
        capture_output=True,
        text=True,
        check=False,
    )
    assert result.returncode == 0, result.stderr
    return SITE / "output"


@pytest.mark.skipif(shutil.which("uv") is None, reason="uv is not installed")
@pytest.mark.slow
def test_the_sites_own_pages_conform(built_site):
    pages = sorted(built_site.glob("*.html"))
    assert pages, "the site build produced no pages"
    for page in pages:
        report = validate_file(str(page))
        assert report.conforms, "\n".join(str(f) for f in report.failures)


@pytest.mark.skipif(shutil.which("uv") is None, reason="uv is not installed")
@pytest.mark.slow
def test_the_sites_own_pages_have_no_warnings_either(built_site):
    for page in sorted(built_site.glob("*.html")):
        report = validate_file(str(page))
        assert not report.warnings, "\n".join(str(f) for f in report.warnings)


def test_the_sample_page_conforms():
    report = validate_file(str(ROOT / "sample" / "sample.html"))
    assert report.conforms, "\n".join(str(f) for f in report.failures)


def test_the_sample_page_has_no_warnings_either():
    report = validate_file(str(ROOT / "sample" / "sample.html"))
    assert not report.warnings, "\n".join(str(f) for f in report.warnings)


PLUGIN_PAGES = sorted(
    (ROOT / "pelican-mews" / "tests" / "fixtures").glob("*/expected.xhtml")
)


@pytest.mark.parametrize("page", PLUGIN_PAGES, ids=lambda p: p.parent.name)
def test_pages_the_pelican_plugin_produces_conform(page):
    """What the plugin writes has to pass the validator, or it is no use."""
    report = validate_file(str(page))
    assert report.conforms, "\n".join(str(f) for f in report.failures)


def test_the_dtd_still_matches_the_spec():
    """spec/check_dtd.py is hand-maintained; keep it running in CI."""
    result = subprocess.run(
        [sys.executable, str(ROOT / "spec" / "check_dtd.py")],
        capture_output=True,
        text=True,
        check=False,
    )
    assert result.returncode == 0, result.stderr