Dotnet-WebAPI/API/Controllers/AccountsController.cs

using System.ComponentModel.DataAnnotations;
using Microsoft.AspNetCore.Mvc;
using Model;
using Services;

namespace API.Controllers;

[ApiController]
public class AccountsController(IUserService service) : ControllerBase
{
    private const string DefaultProfilePicture =
        "https://cdn.pixabay.com/photo/2015/10/05/22/37/blank-profile-picture-973460_960_720.png";
    
    [HttpGet("/admin/list-users")]
    public async Task<IEnumerable<User>> ListUsers(
        [Range(0, int.MaxValue, ErrorMessage = "Only positive number allowed")]
        int start,
        [Range(0, int.MaxValue, ErrorMessage = "Only positive number allowed")]
        int n,
        [MaxLength(256, ErrorMessage = "Search string is too wide")]
        string? search
    )
    {
        var result = search == null
            ? await service.ListUsers(search!)
            : await service.ListUsers();

        return result.Skip(start).Take(n);
    }

    [HttpGet("/admin/user/{id:int}")]
    public async Task<IActionResult> GetUser(
        [Range(0, int.MaxValue, ErrorMessage = "Only positive number allowed")]
        int id
    )
    {
        var result = await service.GetUser(id);
        if (result == null)
            return NotFound();

        return Ok(result);
    }

    [HttpPost("/admin/user")]
    public Task<User> AddUser(
        [MaxLength(256, ErrorMessage = "Username is too wide")]
        string username,
        [Range(4, 256, ErrorMessage = "Password must length be between 4 and 256")]
        string password,
        [MaxLength(256, ErrorMessage = "Email is too wide")] [EmailAddress]
        string email,
        bool isAdmin = false
    )
    {
        return service.CreateUser(username, email, password, DefaultProfilePicture, isAdmin);
    }

    [HttpDelete("/admin/user")]
    public async void RemoveUsers(int[] identifiers)
    {
        await service.RemoveUsers(identifiers);
    }

    [HttpPut("/admin/user/{id:int}")]
    public async Task<IActionResult> UpdateUser(
        int id,
        [MaxLength(256, ErrorMessage = "Username is too wide")]
        string username,
        [MaxLength(256, ErrorMessage = "Email is too wide")] [EmailAddress]
        string email,
        bool isAdmin
    )
    {
        try
        {
            await service.UpdateUser(new User(id, username, email, DefaultProfilePicture, isAdmin));
            return Ok();
        }
        catch (ServiceException e)
        {
            return BadRequest(e.Failures);
        }
    }
}