using System.Diagnostics;
using System.Net.Sockets;
using Microsoft.Playwright;

namespace BadmintonBooker;

internal static class BrowserManager
{
    private const int DebugPort = 9222;
    private const string ChromeExe = @"C:\Program Files\Google\Chrome\Application\chrome.exe";
    private const string UserDataDir = @"C:\Users\Shaamil\PlaywrightData";

    public static async Task<IBrowserContext> GetContextAsync(IPlaywright playwright)
    {
        await EnsureChromeRunningAsync();
        var browser = await playwright.Chromium.ConnectOverCDPAsync($"http://127.0.0.1:{DebugPort}");
        return browser.Contexts[0];
    }

    private static async Task EnsureChromeRunningAsync()
    {
        if (IsPortListening(DebugPort))
            return;

        Process.Start(new ProcessStartInfo
        {
            FileName = ChromeExe,
            Arguments = $"--remote-debugging-port={DebugPort} --user-data-dir=\"{UserDataDir}\"",
            UseShellExecute = true
        });

        // Wait for Chrome to bind the debug port
        const int maxWaitMs = 10000;
        const int intervalMs = 500;
        var elapsed = 0;

        while (!IsPortListening(DebugPort) && elapsed < maxWaitMs)
        {
            await Task.Delay(intervalMs);
            elapsed += intervalMs;
        }

        if (!IsPortListening(DebugPort))
            throw new TimeoutException("Chrome did not open the remote debugging port in time.");
    }

    private static bool IsPortListening(int port)
    {
        try
        {
            using var tcp = new TcpClient();
            tcp.Connect("127.0.0.1", port);
            return true;
        }
        catch { return false; }
    }


}