"""Local UI dependencies are served without exposing project data."""
import http.client
import pathlib
import re
import threading
from http.server import ThreadingHTTPServer

import pytest

from omni import serve


@pytest.fixture
def static_server(tmp_path, monkeypatch):
    web = tmp_path / "web"
    vendor = web / "vendor" / "tabler"
    vendor.mkdir(parents=True)
    (vendor / "tabler.min.css").write_text("body{color:#123}", encoding="utf-8")
    (vendor / "tabler.min.js").write_text("window.tabler={};", encoding="utf-8")
    (web / "index.html").write_text("<html>panel</html>", encoding="utf-8")
    (web / "private.js").write_text("private", encoding="utf-8")
    (vendor / "secret.json").write_text('{"secret":"test-only"}', encoding="utf-8")
    (tmp_path / "outside.js").write_text("outside", encoding="utf-8")
    monkeypatch.setattr(serve, "WEB", web)
    server = ThreadingHTTPServer(("127.0.0.1", 0), serve.Handler)
    thread = threading.Thread(target=server.serve_forever, daemon=True)
    thread.start()

    def get(path):
        connection = http.client.HTTPConnection("127.0.0.1", server.server_port, timeout=5)
        try:
            connection.request("GET", path)
            response = connection.getresponse()
            return response.status, dict(response.getheaders()), response.read()
        finally:
            connection.close()

    try:
        yield get
    finally:
        server.shutdown()
        server.server_close()
        thread.join(timeout=5)


@pytest.mark.parametrize("name,ctype,expected", [
    ("tabler.min.css", "text/css; charset=utf-8", b"body{color:#123}"),
    ("tabler.min.js", "text/javascript; charset=utf-8", b"window.tabler={};"),
])
def test_local_template_assets(static_server, name, ctype, expected):
    status, headers, body = static_server("/assets/vendor/tabler/" + name + "?v=1.7.1")
    assert status == 200 and body == expected
    assert headers["Content-Type"] == ctype
    assert headers["X-Content-Type-Options"] == "nosniff"
    assert int(headers["Content-Length"]) == len(expected)


@pytest.mark.parametrize("path", [
    "/assets/vendor/tabler/missing.js",
    "/assets/vendor/tabler/",
    "/assets/vendor/tabler/secret.json",
    "/assets/private.js",
    "/assets/index.html",
    "/assets/vendor/../../private.js",
    "/assets/vendor/%2e%2e/%2e%2e/outside.js",
    "/assets/%2foutside.js",
    "/assets/vendor/..%5c..%5cprivate.js",
    "/assets/vendor/%00.js",
])
def test_assets_reject_private_files_and_traversal(static_server, path):
    status, _, body = static_server(path)
    assert status == 404
    assert body == b"not found"


def test_index_still_served(static_server):
    status, headers, body = static_server("/")
    assert status == 200 and body == b"<html>panel</html>"
    assert headers["Content-Type"].startswith("text/html")


WEB_ROOT = pathlib.Path(__file__).resolve().parents[1] / "web"


def test_panel_html_is_self_contained_black():
    html = (WEB_ROOT / "index.html").read_text(encoding="utf-8")
    # Black theme is declared three ways so first paint cannot flash white.
    assert 'data-bs-theme="dark"' in html
    assert "color-scheme: dark" in html
    assert "--omni-background: #09090b" in html
    # No remote dependencies: every src/href must stay inside /assets/ or be a data URL.
    for attr in re.findall(r'(?:src|href)="([^"]+)"', html):
        assert not attr.startswith(("http://", "https://", "//")), attr
    assert "/assets/vendor/tabler/tabler.min.css" in html
    assert "/assets/vendor/tabler/tabler.min.js" in html


def test_panel_self_hosts_inter_for_latin_and_cyrillic():
    html = (WEB_ROOT / "index.html").read_text(encoding="utf-8")
    assert html.count('font-family: "Inter Variable"') == 4
    assert 'format("woff2-variations")' not in html  # rejected by Firefox/Safari
    assert html.count('format("woff2")') == 4
    assert html.count("font-display: swap") == 4
    assert "--tblr-font-sans-serif: \"Inter Variable\"" in html
    files = WEB_ROOT / "vendor" / "inter" / "files"
    for subset in ("latin", "latin-ext", "cyrillic", "cyrillic-ext"):
        face = files / f"inter-{subset}-wght-normal.woff2"
        assert face.is_file() and face.stat().st_size > 2000, face
        assert f"/assets/vendor/inter/files/{face.name}" in html
    licence = (WEB_ROOT / "vendor" / "inter" / "LICENSE").read_text(encoding="utf-8")
    assert "SIL OPEN FONT LICENSE" in licence.upper()


def test_panel_typography_does_not_clip_cyrillic():
    html = (WEB_ROOT / "index.html").read_text(encoding="utf-8")
    badge = re.search(r"\.badge \{[^}]*\}", html)
    assert badge and "line-height: 1.4" in badge.group(0)
    assert "letter-spacing: -.01em" not in html  # negative tracking on Cyrillic titles
    for selector in (".brand-caption", ".feed-title", ".feed-preview"):
        rule = re.search(r"(?m)^" + re.escape(selector) + r" \{[^}]*\}", html)
        assert rule, selector
        line_height = re.search(r"line-height: ([\d.]+)", rule.group(0))
        assert line_height and float(line_height.group(1)) >= 1.4, rule.group(0)