using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Authorization.Infrastructure;
using Microsoft.AspNetCore.Identity;

namespace Selector.Model.Authorisation
{
    public class WatcherIsAdminAuthHandler
        : AuthorizationHandler<OperationAuthorizationRequirement, Watcher>
    {
        protected override Task HandleRequirementAsync(
            AuthorizationHandlerContext context, 
            OperationAuthorizationRequirement requirement, 
            Watcher resource
        ) {
            if (context.User == null || resource == null)
            {
                return Task.CompletedTask;
            }

            if (context.User.IsInRole(Constants.AdminRole))
            {
                context.Succeed(requirement);
            }

            return Task.CompletedTask;
        }
    }
}