using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Logging;
using xCommons.Attributes;
using xCommons.Configurations;
using xCommons.Extensions;
using xCommons.Providers;
using xDataService.Interfaces;
using xIdentityService.Controllers;
using xIdentityService.Interfaces;
using xModels.Base;
using xPushService.Base;
using xPushService.Constants;

namespace xApi.Base
{
    [ApiController]
    [ApiVersion("1.0")]
    [RequireXPowered(true)]
    [Route("api/v{version:apiVersion}/entities/[controller]")]
    public abstract class XIBaseV1EntityController<TEntity, TKey> : XIBaseEntityController<TEntity, TKey>
        where TEntity : XBaseEntity<TKey>
    {
        //
        #region Constructor ...
        protected XIBaseV1EntityController(
            ILogger<XIBaseV1EntityController<TEntity, TKey>> logger,
            XAppConfiguration appConfiguration,
            IXIdentityProvider identityProvider,
            XValidationProvider validationProvider,
            IXBaseRepository<TEntity, TKey> repository
        ) : base(
            logger,
            appConfiguration,
            identityProvider,
            validationProvider,
            repository
        )
        { }
        #endregion
    }

    public abstract class XIBaseV1EntityHubController<TEntity, TKey> : XIBaseV1EntityController<TEntity, TKey>
        where TEntity : XBaseEntity<TKey>
    {
        //
        #region Props ...
        public IHubContext<XBaseEntityHub<TEntity, TKey>> Hub { get; }
        #endregion

        //
        #region Constructor ...
        protected XIBaseV1EntityHubController(
            ILogger<XIBaseV1EntityHubController<TEntity, TKey>> logger,
            XAppConfiguration appConfiguration,
            IXIdentityProvider identityProvider,
            XValidationProvider validationProvider,
            IXBaseRepository<TEntity, TKey> repository,
            IHubContext<XBaseEntityHub<TEntity, TKey>> hub = null
        ) : base(
            logger,
            appConfiguration,
            identityProvider,
            validationProvider,
            repository
        )
        {
            Hub = hub;
        }
        #endregion

        //
        #region Hub ...
        [NonAction]
        public async Task SendPush(
            string action,
            string payLoad
        )
        {
            //
            var actions = new List<string>
            {
                XBaseEntityHubAction.Add.GetStringValue(),
                XBaseEntityHubAction.Update.GetStringValue(),
                XBaseEntityHubAction.Delete.GetStringValue(),
                XBaseEntityHubAction.AddMany.GetStringValue(),
                XBaseEntityHubAction.DeleteMany.GetStringValue(),
                XBaseEntityHubAction.UpdateMany.GetStringValue(),
                XBaseEntityHubAction.AddOrUpdate.GetStringValue(),
            };

            //
            // Validate ...
            var isValid =
                !Hub.IsNull() &&
                !action.IsNullOrEmpty() &&
                !payLoad.IsNullOrEmpty() &&
                actions.Contains(action);
            if (!isValid)
            {
                return;
            }

            //
            // Retrieve Connection Id ...
            var connectionId = GetConnectionId();
            var clients = Hub.Clients.All;
            if (!connectionId.IsNullOrEmpty())
            {
                clients = Hub.Clients.AllExcept(connectionId);
            }

            //
            await clients.SendAsync(action, payLoad, connectionId);
        }
        #endregion      
    }
}