using FrameworkDAL.DTO.EIPConversation;
using GB5Shared.DTO.Framework.Login;
using Microsoft.Extensions.Logging;
using System;
using System.Threading;
using System.Threading.Tasks;

namespace FrameworkBLL.EIPConversation.EIPHandlers.ChannelHandler
{
    // ============================================================
    // DirectActionWebChannelHandler — ChannelType.DirectActionWeb.
    //
    // No real outbound push: the HTML stepper endpoints (GET/POST
    // /Action/Conversation*) read the result directly off
    // IEIPConversationEngine.ProcessIncomingMessageAsync's return
    // value and render it themselves, the same way a caller reads
    // PostmanChannelHandler's simulated send. This handler exists
    // only so EIPResponseEngine's channel-handler lookup succeeds.
    // ============================================================
    public class DirectActionWebChannelHandler : IEIPChannelHandler
    {
        public string ChannelName => "DIRECTACTIONWEB";

        public bool CanHandle(string channel) =>
            string.Equals(channel, ChannelName, StringComparison.OrdinalIgnoreCase);

        private readonly ILogger<DirectActionWebChannelHandler> _logger;

        public DirectActionWebChannelHandler(ILogger<DirectActionWebChannelHandler> logger)
        {
            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
        }

        public Task<EIPChannelResponseDTO> SendAsync(
            EIPResponseContext context,
            LoginDTO loginDTO,
            CancellationToken cancellationToken)
        {
            _logger.LogDebug(
                "DirectActionWeb response captured for direct rendering | Recipient={Recipient}",
                context?.Recipient);

            return Task.FromResult(new EIPChannelResponseDTO
            {
                IsSent = true,
                Status = "RENDERED_BY_CALLER"
            });
        }
    }
}