"""
Async example integrating agent-permissions with Playwright.

Prerequisites:
    pip install playwright agent-permissions
    playwright install chromium
"""

from __future__ import annotations

import asyncio

from lxml import html

from agent_permissions import async_api
from agent_permissions.validation import validate_interaction


async def run() -> None:
    try:
        from playwright.async_api import async_playwright
    except ImportError:  # pragma: no cover - sample only
        raise SystemExit("Install playwright to run this example: pip install playwright")

    async with async_playwright() as p:
        browser = await p.chromium.launch()
        page = await browser.new_page()
        await page.goto("https://example.com/products")

        manifest_wrapper = await async_api.discover_manifest(
            page.url,
            html=await page.content(),
        )

        if manifest_wrapper and manifest_wrapper.manifest:
            dom = html.fromstring(await page.content())
            element = dom.cssselect(".cta-link")[0]
            result = validate_interaction(
                manifest_wrapper.manifest,
                verb="follow_link",
                element=element,
            )
            if result.allowed:
                await page.click(".cta-link")
                print("Link followed in compliance with manifest.")
            else:
                print(f"Manifest denied link follow: {result.reasons}")
        else:
            print("No manifest discovered; skipping automated navigation.")

        await browser.close()


if __name__ == "__main__":
    asyncio.run(run())