Entrega do teste

.gitignore

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+[Bb]in
+obj
+.vscode
+[L,l]ogs
+*.log

Classes/DTOs/AdminDTO.cs

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+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+
+namespace dorotec_backend_test.Classes.DTOs;
+
+/// <summary> DTO para as informações de um Administrador. </summary>
+public class AdminDTO
+{
+    /// <summary></summary>
+    [JsonIgnore]
+    public int? Id { get; set; }
+
+    /// <summary> Nome pessoal. </summary>
+    [MaxLength(63)]
+    public string? Name { get; set; }
+
+    /// <summary> Nome de login para o posterior acesso. </summary>
+    /// <remarks> Deve ser único. </remarks>
+    [MaxLength(32)]
+    public string Login { get; set; }
+
+    /// <summary> Senha. </summary>
+    [MaxLength(100)]
+    public string? Password { get; set; }
+}

Classes/DTOs/BookDTO.cs

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+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+
+namespace dorotec_backend_test.Classes.DTOs;
+
+/// <summary> DTO para os metadados de um livro. </summary>
+public class BookDTO
+{
+    /// <summary></summary>
+    public BookDTO()
+    { }
+
+    /// <summary></summary>
+    [JsonIgnore]
+    public int? Id { get; set; }
+
+    /// <summary> Preço do Livro. </summary>
+    public int? Price { get; set; }
+
+    /// <summary> Nome do Livro. </summary>
+    [MaxLength(123)]
+    public string? Name { get; set; }
+
+    /// <summary> Nome do Autor. </summary>
+    [MaxLength(123)]
+    public string? Author { get; set; }
+
+    /// <summary> Gênero do Livro. </summary>
+    [MaxLength(63)]
+    public string? Genre { get; set; }
+
+    /// <summary> Edição da Publicação. </summary>
+    public int? Edition { get; set; }
+
+    /// <summary> Quantidade de Páginas. </summary>
+    public int? Pages { get; set; }
+
+    /// <summary> Data da Publicação. </summary>
+    public DateTime? PublishDate { get; set; }
+}

Classes/DTOs/BookFilterDTO.cs

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+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+
+namespace dorotec_backend_test.Classes.DTOs;
+
+/// <summary> Informações para a filtragem de uma busca por um ou mais livros. </summary>
+public class BookFilterDTO
+{
+    /// <summary> Índice da página. </summary>
+    [Required]
+    [DefaultValue(1)]
+    [Range(1, Int32.MaxValue)]
+    public int Index { get; set; }
+
+    /// <summary> Quantidade de registros por página. </summary>
+    [Required]
+    [Range(1, 30)]
+    [DefaultValue(5)]
+    public byte Size { get; set; }
+
+    /// <summary> Preço mínimo do Livro. </summary>
+    public int? MinPrice { get; set; }
+
+    /// <summary> Preço máximo do Livro. </summary>
+    public int? MaxPrice { get; set; }
+
+    /// <summary> Nome do Livro. </summary>
+    [MaxLength(123)]
+    public string? Name { get; set; }
+
+    /// <summary> Nome do Autor. </summary>
+    [MaxLength(123)]
+    public string? Author { get; set; }
+
+    /// <summary> Gênero do Livro. </summary>
+    [MaxLength(63)]
+    public string? Genre { get; set; }
+
+    /// <summary> Edição da Publicação. </summary>
+    public int? Edition { get; set; }
+
+    /// <summary> Quantidade de Páginas. </summary>
+    public int? Pages { get; set; }
+}

Classes/DTOs/LoginDTO.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace dorotec_backend_test.Classes.DTOs;
+
+/// <summary> DTO para obter acesso de Administrador à aplicação. </summary>
+public class LoginDTO
+{
+    /// <summary> Nome único de login. </summary>
+    [Required]
+    [MaxLength(32)]
+    public string Login { get; set; }
+
+    /// <summary> Senha. </summary>
+    [Required]
+    [MaxLength(100)]
+    public string Password { get; set; }
+}

Classes/DTOs/LoginResponseDTO.cs

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+namespace dorotec_backend_test.Classes.DTOs;
+
+/// <summary> Informações de resposta à uma requisição de login. </summary>
+public class LoginResponseDTO
+{
+    public LoginResponseDTO(string name, string token)
+    {
+        this.Name = name;
+        this.Token = token;
+    }
+
+    /// <summary> Nome do Administrador. </summary>
+    public string Name { get; set; }
+
+    /// <summary> Token de acesso JWT. </summary>
+    public string Token { get; set; }
+}

Classes/Exceptions/CannotDeleteResourceException.cs

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+namespace dorotec_backend_test.Classes.Exceptions;
+
+public class CannotDeleteResourceException : Exception
+{
+    public CannotDeleteResourceException()
+    {
+    }
+
+    public CannotDeleteResourceException(string? message) : base(message)
+    {
+    }
+
+    public CannotDeleteResourceException(string? message, Exception? innerException) : base(message, innerException)
+    {
+    }
+}

Classes/Exceptions/ResourceAlreadyExistsException.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace dorotec_backend_test.Classes.Exceptions;
+
+public class ResourceAlreadyExistsException : Exception
+{
+    public ResourceAlreadyExistsException()
+    {
+    }
+
+    public ResourceAlreadyExistsException(string? message) : base(message)
+    {
+    }
+
+    public ResourceAlreadyExistsException(string? message, Exception? innerException) : base(message, innerException)
+    {
+    }
+
+    public static void Test(){}
+}

Classes/Exceptions/ResourceNotFoundException.cs

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+namespace dorotec_backend_test.Classes.Exceptions;
+
+public class ResourceNotFoundException : Exception
+{
+    public ResourceNotFoundException()
+    {
+    }
+
+    public ResourceNotFoundException(string? message) : base(message)
+    {
+    }
+
+    public ResourceNotFoundException(string? message, Exception? innerException) : base(message, innerException)
+    {
+    }
+}

Classes/Exceptions/UnauthorizedRequestException.cs

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+namespace dorotec_backend_test.Classes.Exceptions;
+
+public class UnauthorizedRequestException : Exception
+{
+    public UnauthorizedRequestException()
+    {
+    }
+
+    public UnauthorizedRequestException(string? message) : base(message)
+    {
+    }
+
+    public UnauthorizedRequestException(string? message, Exception? innerException) : base(message, innerException)
+    {
+    }
+}

Classes/Mapping/AdminProfile.cs

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+using AutoMapper;
+using dorotec_backend_test.Classes.DTOs;
+using dorotec_backend_test.Models;
+
+namespace dorotec_backend_test.Classes.Mapping;
+
+public class AdminProfile : Profile
+{
+    public AdminProfile()
+    {
+        CreateMap<int?, int>()
+            .ConvertUsing((source, destination) => source ?? destination);
+
+        CreateMap<Admin, AdminDTO>()
+            .ForMember(dto => dto.Password, options => options.Ignore());
+        CreateMap<AdminDTO, Admin>()
+            .ForMember(admin => admin.Password, options => options.Ignore());
+    }
+}

Classes/Mapping/BookProfile.cs

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+using AutoMapper;
+using dorotec_backend_test.Classes.DTOs;
+using dorotec_backend_test.Models;
+
+namespace dorotec_backend_test.Classes.Mapping;
+
+public class BookProfile : Profile
+{
+    public BookProfile()
+    {
+        CreateMap<int?, int>()
+            .ConvertUsing((source, destination) => source ?? destination);
+
+        CreateMap<Book, BookDTO>();
+        CreateMap<BookDTO, Book>()
+            .ForMember(member => member.Id, options => options.Ignore())
+            .ForAllMembers((options => options.Condition((source, destination, sourceValue) 
+                => sourceValue is not null)));
+    }
+}

Classes/Pagination/PageFilter.cs

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+namespace dorotec_backend_test.Classes.Pagination;
+
+public class PageFilter
+{
+    public int PageIndex { get; set; }
+    public byte Take { get; set; }
+    public int Skip => (this.PageIndex - 1) * Take;
+
+    public PageFilter(int index, byte size)
+    {
+        // Nunca menos que 1
+        this.PageIndex = index < 1
+            ? 1
+            : index;
+
+        // Nunca mais que 20
+        this.Take = size > (byte)20
+            ? (byte)20
+            : size;
+    }
+}

Classes/Pagination/PageResult.cs

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+namespace dorotec_backend_test.Classes.Pagination;
+
+public class PageResult<T> where T : class
+{
+    /// <summary> Registros contidos na página. </summary>
+    public List<T> Data { get; }
+    private readonly PageFilter Filter;
+
+    /// <summary> Índice da página. </summary>
+    public int PageIndex { get => this.Filter.PageIndex; }
+
+    /// <summary> Quantidade de registros por página. </summary>
+    public int PageSize { get => this.Filter.Take; }
+
+    /// <summary> Quantidade total de registros em todas as páginas. </summary>
+    public long TotalRecords { get; }
+
+    /// <summary> Quantidade total de páginas. </summary>
+    public int TotalPages
+    {
+        get => Convert.ToInt32
+            (
+                Math.Ceiling(
+                    ((double)TotalRecords / (double)this.PageSize))
+            );
+    }
+
+    public PageResult(List<T> data, int index, byte size, long total)
+    {
+        this.Data = data;
+        this.Filter = new PageFilter(index, size);
+
+        this.TotalRecords = total;
+    }
+    public PageResult(List<T> data, PageFilter filter, long total)
+    {
+        this.Data = data;
+        this.Filter = filter;
+
+        this.TotalRecords = total;
+    }
+}