server/src/Admin/Controllers/UsersController.cs

using System;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;
using Bit.Core.Repositories;
using System.Threading.Tasks;
using Bit.Admin.Models;
using System.Collections.Generic;
using Bit.Core.Models.Table;
using Bit.Core;

namespace Bit.Admin.Controllers
{
    [Authorize]
    public class UsersController : Controller
    {
        private readonly IUserRepository _userRepository;
        private readonly GlobalSettings _globalSettings;

        public UsersController(
            IUserRepository userRepository,
            GlobalSettings globalSettings)
        {
            _userRepository = userRepository;
            _globalSettings = globalSettings;
        }

        public async Task<IActionResult> Index(string email, int page = 1, int count = 25)
        {
            if(page < 1)
            {
                page = 1;
            }

            if(count < 1)
            {
                count = 1;
            }

            var skip = (page - 1) * count;
            var users = await _userRepository.SearchAsync(email, skip, count);
            return View(new UsersModel
            {
                Items = users as List<User>,
                Email = string.IsNullOrWhiteSpace(email) ? null : email,
                Page = page,
                Count = count
            });
        }

        public async Task<IActionResult> Edit(Guid id)
        {
            var user = await _userRepository.GetByIdAsync(id);
            if(user == null)
            {
                return RedirectToAction("Index");
            }

            return View(new UserEditModel(user, _globalSettings));
        }

        [HttpPost]
        public async Task<IActionResult> Edit(Guid id, UserEditModel model)
        {
            var user = await _userRepository.GetByIdAsync(id);
            if(user == null)
            {
                return RedirectToAction("Index");
            }

            model.ToUser(user);
            await _userRepository.ReplaceAsync(user);
            return RedirectToAction("Edit", new { id });
        }

        public async Task<IActionResult> Delete(Guid id)
        {
            var user = await _userRepository.GetByIdAsync(id);
            if(user != null)
            {
                await _userRepository.DeleteAsync(user);
            }

            return RedirectToAction("Index");
        }
    }
}