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using Microsoft.AspNetCore.Http;
using Nop.Core;
using Nop.Data;
namespace Nop.Services.Common;
/// 
/// Represents middleware that checks whether request is for keep alive
///  
public partial class KeepAliveMiddleware
{
    #region Fields
    protected readonly RequestDelegate _next;
    #endregion
    #region Ctor
    public KeepAliveMiddleware(RequestDelegate next)
    {
        _next = next;
    }
    #endregion
    #region Methods
    /// 
    /// Invoke middleware actions
    ///  
    /// HTTP context
    /// Web helper
    /// A task that represents the asynchronous operation 
    public async Task InvokeAsync(HttpContext context, IWebHelper webHelper)
    {
        //whether database is installed
        if (DataSettingsManager.IsDatabaseInstalled())
        {
            //keep alive page requested (we ignore it to prevent creating a guest customer records)
            var keepAliveUrl = $"{webHelper.GetStoreLocation()}{NopCommonDefaults.KeepAlivePath}";
            if (webHelper.GetThisPageUrl(false).StartsWith(keepAliveUrl, StringComparison.InvariantCultureIgnoreCase))
                return;
        }
        //or call the next middleware in the request pipeline
        await _next(context);
    }
    #endregion
}