"""Tests for the whoami endpoint and the static SPA host."""
from __future__ import annotations

import dataclasses
import tempfile
import unittest
from pathlib import Path
from unittest import mock

from httpx import ASGITransport, AsyncClient

from tavolo.app import app
from tavolo.config import settings
from tests.helpers import async_test, make_principal, oidc_user


class MeRouteTest(unittest.TestCase):
    @async_test
    async def test_me_authenticated(self) -> None:
        transport = ASGITransport(app=app)
        async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
            with oidc_user("alice", email="alice@example.com"):
                response = await client.get("/api/me")
            self.assertEqual(200, response.status_code)
            # The email claim the IdP returns is neither stored nor exposed;
            # no picture claim in this request.
            self.assertEqual(
                {"sub": make_principal("alice"), "name": "alice", "picture": None},
                response.json(),
            )

    @async_test
    async def test_me_includes_the_profile_picture(self) -> None:
        transport = ASGITransport(app=app)
        async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
            with oidc_user("alice", picture="https://cdn.example.com/alice.png"):
                response = await client.get("/api/me")
        self.assertEqual(200, response.status_code)
        self.assertEqual(
            "https://cdn.example.com/alice.png",
            response.json()["picture"],
        )

    @async_test
    async def test_me_rejects_non_http_picture_claims(self) -> None:
        transport = ASGITransport(app=app)
        async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
            with oidc_user("alice", picture="javascript:alert(1)"):
                response = await client.get("/api/me")
        self.assertEqual(200, response.status_code)
        self.assertIsNone(response.json()["picture"])

    @async_test
    async def test_me_unauthenticated(self) -> None:
        transport = ASGITransport(app=app)
        async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
            response = await client.get("/api/me")
        self.assertEqual(401, response.status_code)


class StaticRouteTest(unittest.TestCase):
    """The app only serves the SPA shell; asset files under /static are
    served by Granian and are not reachable through the ASGI transport."""

    @async_test
    async def test_serves_shell_and_spa_fallback(self) -> None:
        with tempfile.TemporaryDirectory() as dist:
            (Path(dist) / "index.html").write_text("<html>spa</html>")

            patched = dataclasses.replace(settings, static_dir=dist)
            with mock.patch("tavolo.static.settings", patched):
                transport = ASGITransport(app=app)
                async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
                    index = await client.get("/")
                    self.assertEqual(200, index.status_code)
                    self.assertEqual("text/html; charset=utf-8", index.headers["content-type"])
                    self.assertIn(b"spa", index.content)

                    # Unknown client-side route falls back to the app shell.
                    fallback = await client.get("/game/some-id")
                    self.assertEqual(200, fallback.status_code)
                    self.assertIn(b"spa", fallback.content)

    @async_test
    async def test_serves_pwa_manifest_and_worker(self) -> None:
        """The manifest and the service worker are served from the site
        root, with the content types browsers require, instead of falling
        through to the app shell."""
        with tempfile.TemporaryDirectory() as dist:
            (Path(dist) / "index.html").write_text("<html>spa</html>")
            (Path(dist) / "manifest.webmanifest").write_text('{"name": "Tavolo"}')
            (Path(dist) / "sw.js").write_text("self.addEventListener('fetch', () => {});")

            patched = dataclasses.replace(settings, static_dir=dist)
            with mock.patch("tavolo.static.settings", patched):
                transport = ASGITransport(app=app)
                async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
                    manifest = await client.get("/manifest.webmanifest")
                    self.assertEqual(200, manifest.status_code)
                    self.assertEqual("application/manifest+json", manifest.headers["content-type"])
                    self.assertEqual('{"name": "Tavolo"}', manifest.text)

                    worker = await client.get("/sw.js")
                    self.assertEqual(200, worker.status_code)
                    self.assertEqual("text/javascript; charset=utf-8", worker.headers["content-type"])
                    # The worker script itself must never be cached stale.
                    self.assertEqual("no-cache", worker.headers["cache-control"])
                    self.assertIn(b"addEventListener", worker.content)

    @async_test
    async def test_missing_pwa_files_return_404(self) -> None:
        """A build without the PWA files must 404 those exact paths rather
        than answer them with the shell (the wrong content type)."""
        with tempfile.TemporaryDirectory() as dist:
            (Path(dist) / "index.html").write_text("<html>spa</html>")

            patched = dataclasses.replace(settings, static_dir=dist)
            with mock.patch("tavolo.static.settings", patched):
                transport = ASGITransport(app=app)
                async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
                    self.assertEqual(404, (await client.get("/manifest.webmanifest")).status_code)
                    self.assertEqual(404, (await client.get("/sw.js")).status_code)

    @async_test
    async def test_missing_dist_returns_404(self) -> None:
        patched = dataclasses.replace(settings, static_dir="/nonexistent-dist")
        with mock.patch("tavolo.static.settings", patched):
            transport = ASGITransport(app=app)
            async with AsyncClient(transport=transport, base_url="http://127.0.0.1") as client:
                response = await client.get("/")
            self.assertEqual(404, response.status_code)


if __name__ == "__main__":
    unittest.main()