"""Tests for the HTTP server."""

import sqlite3
import threading
import tempfile

import httpx
import pytest

from src.db import _create_tables, add_repo, upsert_entry
from src.server import create_handler
from http.server import HTTPServer


@pytest.fixture
def db_path(tmp_path):
    """Create a temporary database with sample data."""
    path = str(tmp_path / "test.db")
    conn = __import__("sqlite3").connect(path)
    _create_tables(conn)
    repo_id = add_repo(conn, "owner/repo")
    upsert_entry(conn, repo_id, "release", "v1.0.0", "Release v1.0.0",
                 "# Changelog\n\n- New feature",
                 "2025-01-15T10:30:00Z",
                 "https://github.com/owner/repo/releases/tag/v1.0.0")
    conn.close()
    return path


@pytest.fixture
def server(db_path):
    """Start a test HTTP server in a background thread."""
    handler = create_handler(db_path)
    server = HTTPServer(("127.0.0.1", 0), handler)
    port = server.server_address[1]
    thread = threading.Thread(target=server.serve_forever, daemon=True)
    thread.start()
    yield f"http://127.0.0.1:{port}"
    server.shutdown()


class TestFeedEndpoint:
    def test_feed_returns_200(self, server):
        resp = httpx.get(f"{server}/feed.xml")
        assert resp.status_code == 200

    def test_feed_content_type(self, server):
        resp = httpx.get(f"{server}/feed.xml")
        assert "application/rss+xml" in resp.headers["content-type"]

    def test_feed_contains_entry(self, server):
        resp = httpx.get(f"{server}/feed.xml")
        assert "owner/repo" in resp.text
        assert "v1.0.0" in resp.text

    def test_feed_is_valid_xml(self, server):
        import xml.etree.ElementTree as ET
        resp = httpx.get(f"{server}/feed.xml")
        root = ET.fromstring(resp.text)
        assert root.tag == "rss"


class TestIndexEndpoint:
    def test_index_returns_200(self, server):
        resp = httpx.get(server + "/")
        assert resp.status_code == 200

    def test_index_content_type(self, server):
        resp = httpx.get(server + "/")
        assert "text/html" in resp.headers["content-type"]

    def test_index_links_to_feed(self, server):
        resp = httpx.get(server + "/")
        assert "/feed.xml" in resp.text


class TestHealthEndpoint:
    def test_health_returns_200(self, server):
        resp = httpx.get(f"{server}/health")
        assert resp.status_code == 200

    def test_health_body(self, server):
        resp = httpx.get(f"{server}/health")
        assert resp.text == "OK"


class TestNotFound:
    def test_unknown_path(self, server):
        resp = httpx.get(f"{server}/unknown")
        assert resp.status_code == 404