finalisation du dbcontext et des entitées

WebApi/DTOs/AnswerDto.cs

@@ -11,9 +11,12 @@ namespace DTOs
         ///     Id : identifier in the database
         ///     Content : content of the answer
         ///     IdQuestion : the id of the question which it answer to
+        ///     Question : the question which it answer to
         /// </summary>
         public int? Id { get; set; }
         public string Content { get; set; } = null!;
         public int? IdQuestion { get; set; }
+
+        public QuestionDto Question { get; set; } = null!;
     }
 }

WebApi/DTOs/LobbyDto.cs

@@ -17,11 +17,13 @@ namespace DTOs
         ///     Name : name of the lobby
         ///     Password : password require to access at the lobby
         ///     IdCreator : identifier of the creator player
+        ///     Creator : the creator player
         /// </summary>
         public int? Id { get; set; }
         public string Name { get; set; } = null!;
         public string Password { get; set; } = null!;
         public int NbPlayers { get; set; }
         public int? IdCreator { get; set; }
+        public PlayerDto Creator { get; set; } = null!;
     }
 }

WebApi/DTOs/QuestionDto.cs

@@ -19,6 +19,8 @@ namespace DTOs
         ///     NbFails : number of time that people fail on this question
         ///     IdChapter : identifier of the chapter of the question
         ///     IdAnswerGood : identifier of the right answer to this question
+        ///     Chapter : the chapter of the question
+        ///     AnswerGood : the right answer to this question
         /// </summary>
         public int? Id { get; set; }
         public string Content { get; set; } = null!;
@@ -26,5 +28,7 @@ namespace DTOs
         public int NbFalls { get; set; }
         public int? IdChapter { get; set; }
         public int? IdAnswerGood { get; set; }
+        public ChapterDto? Chapter { get; set; }
+        public AnswerDto? AnswerGood { get; set; }
     }
 }

WebApi/DbConnectionLibrairie/DbConnectionLibrairie.csproj

@@ -4,6 +4,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <StartWorkingDirectory>$(MSBuildProjectDirectory)</StartWorkingDirectory>
   </PropertyGroup>
 
   <ItemGroup>

WebApi/DbConnectionLibrairie/Migrations/20240226094705_m1.Designer.cs

@@ -0,0 +1,265 @@
+// <auto-generated />
+using System;
+using DbConnectionLibrairie;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace DbConnectionLibrairie.Migrations
+{
+    [DbContext(typeof(MyDbContext))]
+    [Migration("20240226094705_m1")]
+    partial class m1
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "8.0.2");
+
+            modelBuilder.Entity("Entities.AdministratorEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("HashedPassword")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Administrators");
+                });
+
+            modelBuilder.Entity("Entities.AnswerEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Content")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<uint>("IdQuestion")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IdQuestion");
+
+                    b.ToTable("Answers");
+                });
+
+            modelBuilder.Entity("Entities.ChapterEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Chapters");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint?>("IdCreator")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<uint>("NbPlayers")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IdCreator");
+
+                    b.ToTable("Lobbies");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntityPlayerEntity", b =>
+                {
+                    b.Property<uint>("IdLobby")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("IdPlayer")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("MaxScore")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("IdLobby", "IdPlayer");
+
+                    b.HasIndex("IdPlayer");
+
+                    b.ToTable("Use");
+                });
+
+            modelBuilder.Entity("Entities.PlayerEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("HashedPassword")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Nickname")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Players");
+                });
+
+            modelBuilder.Entity("Entities.PlayerEntityChapterEntity", b =>
+                {
+                    b.Property<uint>("IdPlayer")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("IdChapter")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("MaxScore")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("IdPlayer", "IdChapter");
+
+                    b.HasIndex("IdChapter");
+
+                    b.ToTable("Play");
+                });
+
+            modelBuilder.Entity("Entities.QuestionEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Content")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<byte>("Difficulty")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint?>("IdAnswerGood")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint?>("IdChapter")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("NbFalls")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IdAnswerGood");
+
+                    b.HasIndex("IdChapter");
+
+                    b.ToTable("Questions");
+                });
+
+            modelBuilder.Entity("Entities.AnswerEntity", b =>
+                {
+                    b.HasOne("Entities.QuestionEntity", "Question")
+                        .WithMany()
+                        .HasForeignKey("IdQuestion")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Question");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntity", b =>
+                {
+                    b.HasOne("Entities.PlayerEntity", "Creator")
+                        .WithMany()
+                        .HasForeignKey("IdCreator");
+
+                    b.Navigation("Creator");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntityPlayerEntity", b =>
+                {
+                    b.HasOne("Entities.LobbyEntity", "Lobby")
+                        .WithMany()
+                        .HasForeignKey("IdLobby")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.PlayerEntity", "Player")
+                        .WithMany()
+                        .HasForeignKey("IdPlayer")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Lobby");
+
+                    b.Navigation("Player");
+                });
+
+            modelBuilder.Entity("Entities.PlayerEntityChapterEntity", b =>
+                {
+                    b.HasOne("Entities.ChapterEntity", "Chapter")
+                        .WithMany()
+                        .HasForeignKey("IdChapter")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.PlayerEntity", "Player")
+                        .WithMany()
+                        .HasForeignKey("IdPlayer")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Chapter");
+
+                    b.Navigation("Player");
+                });
+
+            modelBuilder.Entity("Entities.QuestionEntity", b =>
+                {
+                    b.HasOne("Entities.AnswerEntity", "AnswerGood")
+                        .WithMany()
+                        .HasForeignKey("IdAnswerGood");
+
+                    b.HasOne("Entities.ChapterEntity", "Chapter")
+                        .WithMany()
+                        .HasForeignKey("IdChapter");
+
+                    b.Navigation("AnswerGood");
+
+                    b.Navigation("Chapter");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

WebApi/DbConnectionLibrairie/Migrations/20240226094705_m1.cs

@@ -0,0 +1,237 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DbConnectionLibrairie.Migrations
+{
+    /// <inheritdoc />
+    public partial class m1 : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Administrators",
+                columns: table => new
+                {
+                    Id = table.Column<uint>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Username = table.Column<string>(type: "TEXT", nullable: false),
+                    HashedPassword = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Administrators", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Chapters",
+                columns: table => new
+                {
+                    Id = table.Column<uint>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Chapters", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Players",
+                columns: table => new
+                {
+                    Id = table.Column<uint>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Nickname = table.Column<string>(type: "TEXT", nullable: false),
+                    HashedPassword = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Players", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Lobbies",
+                columns: table => new
+                {
+                    Id = table.Column<uint>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(type: "TEXT", nullable: false),
+                    Password = table.Column<string>(type: "TEXT", nullable: false),
+                    NbPlayers = table.Column<uint>(type: "INTEGER", nullable: false),
+                    IdCreator = table.Column<uint>(type: "INTEGER", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Lobbies", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Lobbies_Players_IdCreator",
+                        column: x => x.IdCreator,
+                        principalTable: "Players",
+                        principalColumn: "Id");
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Play",
+                columns: table => new
+                {
+                    IdChapter = table.Column<uint>(type: "INTEGER", nullable: false),
+                    IdPlayer = table.Column<uint>(type: "INTEGER", nullable: false),
+                    MaxScore = table.Column<uint>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Play", x => new { x.IdPlayer, x.IdChapter });
+                    table.ForeignKey(
+                        name: "FK_Play_Chapters_IdChapter",
+                        column: x => x.IdChapter,
+                        principalTable: "Chapters",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Play_Players_IdPlayer",
+                        column: x => x.IdPlayer,
+                        principalTable: "Players",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Use",
+                columns: table => new
+                {
+                    IdLobby = table.Column<uint>(type: "INTEGER", nullable: false),
+                    IdPlayer = table.Column<uint>(type: "INTEGER", nullable: false),
+                    MaxScore = table.Column<uint>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Use", x => new { x.IdLobby, x.IdPlayer });
+                    table.ForeignKey(
+                        name: "FK_Use_Lobbies_IdLobby",
+                        column: x => x.IdLobby,
+                        principalTable: "Lobbies",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Use_Players_IdPlayer",
+                        column: x => x.IdPlayer,
+                        principalTable: "Players",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Answers",
+                columns: table => new
+                {
+                    Id = table.Column<uint>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Content = table.Column<string>(type: "TEXT", nullable: false),
+                    IdQuestion = table.Column<uint>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Answers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Questions",
+                columns: table => new
+                {
+                    Id = table.Column<uint>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Content = table.Column<string>(type: "TEXT", nullable: false),
+                    Difficulty = table.Column<byte>(type: "INTEGER", nullable: false),
+                    NbFalls = table.Column<uint>(type: "INTEGER", nullable: false),
+                    IdChapter = table.Column<uint>(type: "INTEGER", nullable: true),
+                    IdAnswerGood = table.Column<uint>(type: "INTEGER", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Questions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Questions_Answers_IdAnswerGood",
+                        column: x => x.IdAnswerGood,
+                        principalTable: "Answers",
+                        principalColumn: "Id");
+                    table.ForeignKey(
+                        name: "FK_Questions_Chapters_IdChapter",
+                        column: x => x.IdChapter,
+                        principalTable: "Chapters",
+                        principalColumn: "Id");
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Answers_IdQuestion",
+                table: "Answers",
+                column: "IdQuestion");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Lobbies_IdCreator",
+                table: "Lobbies",
+                column: "IdCreator");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Play_IdChapter",
+                table: "Play",
+                column: "IdChapter");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Questions_IdAnswerGood",
+                table: "Questions",
+                column: "IdAnswerGood");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Questions_IdChapter",
+                table: "Questions",
+                column: "IdChapter");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Use_IdPlayer",
+                table: "Use",
+                column: "IdPlayer");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Answers_Questions_IdQuestion",
+                table: "Answers",
+                column: "IdQuestion",
+                principalTable: "Questions",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Answers_Questions_IdQuestion",
+                table: "Answers");
+
+            migrationBuilder.DropTable(
+                name: "Administrators");
+
+            migrationBuilder.DropTable(
+                name: "Play");
+
+            migrationBuilder.DropTable(
+                name: "Use");
+
+            migrationBuilder.DropTable(
+                name: "Lobbies");
+
+            migrationBuilder.DropTable(
+                name: "Players");
+
+            migrationBuilder.DropTable(
+                name: "Questions");
+
+            migrationBuilder.DropTable(
+                name: "Answers");
+
+            migrationBuilder.DropTable(
+                name: "Chapters");
+        }
+    }
+}

WebApi/DbConnectionLibrairie/Migrations/MyDbContextModelSnapshot.cs

@@ -0,0 +1,262 @@
+// <auto-generated />
+using System;
+using DbConnectionLibrairie;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace DbConnectionLibrairie.Migrations
+{
+    [DbContext(typeof(MyDbContext))]
+    partial class MyDbContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "8.0.2");
+
+            modelBuilder.Entity("Entities.AdministratorEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("HashedPassword")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Administrators");
+                });
+
+            modelBuilder.Entity("Entities.AnswerEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Content")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<uint>("IdQuestion")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IdQuestion");
+
+                    b.ToTable("Answers");
+                });
+
+            modelBuilder.Entity("Entities.ChapterEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Chapters");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint?>("IdCreator")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<uint>("NbPlayers")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IdCreator");
+
+                    b.ToTable("Lobbies");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntityPlayerEntity", b =>
+                {
+                    b.Property<uint>("IdLobby")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("IdPlayer")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("MaxScore")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("IdLobby", "IdPlayer");
+
+                    b.HasIndex("IdPlayer");
+
+                    b.ToTable("Use");
+                });
+
+            modelBuilder.Entity("Entities.PlayerEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("HashedPassword")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Nickname")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Players");
+                });
+
+            modelBuilder.Entity("Entities.PlayerEntityChapterEntity", b =>
+                {
+                    b.Property<uint>("IdPlayer")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("IdChapter")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("MaxScore")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("IdPlayer", "IdChapter");
+
+                    b.HasIndex("IdChapter");
+
+                    b.ToTable("Play");
+                });
+
+            modelBuilder.Entity("Entities.QuestionEntity", b =>
+                {
+                    b.Property<uint?>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Content")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<byte>("Difficulty")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint?>("IdAnswerGood")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint?>("IdChapter")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<uint>("NbFalls")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IdAnswerGood");
+
+                    b.HasIndex("IdChapter");
+
+                    b.ToTable("Questions");
+                });
+
+            modelBuilder.Entity("Entities.AnswerEntity", b =>
+                {
+                    b.HasOne("Entities.QuestionEntity", "Question")
+                        .WithMany()
+                        .HasForeignKey("IdQuestion")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Question");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntity", b =>
+                {
+                    b.HasOne("Entities.PlayerEntity", "Creator")
+                        .WithMany()
+                        .HasForeignKey("IdCreator");
+
+                    b.Navigation("Creator");
+                });
+
+            modelBuilder.Entity("Entities.LobbyEntityPlayerEntity", b =>
+                {
+                    b.HasOne("Entities.LobbyEntity", "Lobby")
+                        .WithMany()
+                        .HasForeignKey("IdLobby")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.PlayerEntity", "Player")
+                        .WithMany()
+                        .HasForeignKey("IdPlayer")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Lobby");
+
+                    b.Navigation("Player");
+                });
+
+            modelBuilder.Entity("Entities.PlayerEntityChapterEntity", b =>
+                {
+                    b.HasOne("Entities.ChapterEntity", "Chapter")
+                        .WithMany()
+                        .HasForeignKey("IdChapter")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.PlayerEntity", "Player")
+                        .WithMany()
+                        .HasForeignKey("IdPlayer")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Chapter");
+
+                    b.Navigation("Player");
+                });
+
+            modelBuilder.Entity("Entities.QuestionEntity", b =>
+                {
+                    b.HasOne("Entities.AnswerEntity", "AnswerGood")
+                        .WithMany()
+                        .HasForeignKey("IdAnswerGood");
+
+                    b.HasOne("Entities.ChapterEntity", "Chapter")
+                        .WithMany()
+                        .HasForeignKey("IdChapter");
+
+                    b.Navigation("AnswerGood");
+
+                    b.Navigation("Chapter");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

WebApi/DbConnectionLibrairie/MyDbContext.cs

@@ -11,6 +11,8 @@ namespace DbConnectionLibrairie
         public DbSet<LobbyEntity> Lobbies { get; set; }
         public DbSet<PlayerEntity> Players { get; set; }
         public DbSet<QuestionEntity> Questions { get; set; }
+        public DbSet<LobbyEntityPlayerEntity> Use { get; set; }
+        public DbSet<PlayerEntityChapterEntity> Play { get; set; }
         public MyDbContext()
         { }
 
@@ -25,5 +27,18 @@ namespace DbConnectionLibrairie
                 options.UseSqlite(@"Data source = database.db");
             }
         }
+
+        /// <summary>
+        /// function overrided OnModelCreating :
+        /// initialise composed primary keys
+        /// </summary>
+        /// <param name="modelBuilder"></param>
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            modelBuilder.Entity<LobbyEntityPlayerEntity>().HasKey(u => new { u.IdLobby, u.IdPlayer });
+            modelBuilder.Entity<PlayerEntityChapterEntity>().HasKey(u => new { u.IdPlayer, u.IdChapter });
+
+            base.OnModelCreating(modelBuilder);
+        }
     }
 }

WebApi/Entities/AdministratorEntity.cs

@@ -1,12 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Entities
 {
+    [Table("Administrators")]
     public class AdministratorEntity
     {
         /// <summary>
@@ -17,7 +14,7 @@ namespace Entities
         ///     HashedPassword : hash of the password of the administrator
         /// </summary>
         [Key]
-        public int? Id { get; set; }
+        public uint? Id { get; set; }
         public string Username { get; set; } = null!;
         public string HashedPassword { get; set; } = null!;
     }

WebApi/Entities/AnswerEntity.cs

@@ -3,6 +3,7 @@ using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Entities
 {
+    [Table("Answers")]
     public class AnswerEntity
     {
         /// <summary>
@@ -11,12 +12,15 @@ namespace Entities
         ///     Id : identifier in the database
         ///     Content : content of the answer
         ///     IdQuestion : the id of the question which it answer to
+        ///     Question : the question which it answer to
         /// </summary>
         [Key]
-        public int? Id { get; set; }
+        public uint? Id { get; set; }
         public string Content { get; set; } = null!;
 
-        [ForeignKey(nameof(QuestionEntity))]
-        public int? IdQuestion { get; set; }
+        [ForeignKey(nameof(Question))]
+        public uint IdQuestion { get; set; }
+
+        public QuestionEntity Question { get; set; } = null!;
     }
 }

WebApi/Entities/ChapterEntity.cs

@@ -1,12 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Entities
 {
+    [Table("Chapters")]
     public class ChapterEntity
     {
         /// <summary>
@@ -16,7 +13,7 @@ namespace Entities
         ///     Name : name of the chapter
         /// </summary>
         [Key]
-        public int? Id { get; set; }
+        public uint? Id { get; set; }
         public string Name { get; set; } = null!;
     }
 }

WebApi/Entities/LobbyEntity.cs

@@ -1,13 +1,10 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.Diagnostics.CodeAnalysis;
 
 namespace Entities
 {
+    [Table("Lobbies")]
     public class LobbyEntity
     {
         /// <summary>
@@ -17,14 +14,17 @@ namespace Entities
         ///     Name : name of the lobby
         ///     Password : password require to access at the lobby
         ///     IdCreator : identifier of the creator player
+        ///     Creator : the creator player
         /// </summary>
         [Key]
-        public int? Id { get; set; }
+        public uint? Id { get; set; }
         public string Name { get; set; } = null!;
         public string Password { get; set; } = null!;
-        public int NbPlayers { get; set; }
+        public uint NbPlayers { get; set; }
 
-        [ForeignKey(nameof(PlayerEntity))]
-        public int? IdCreator { get; set; }
+        [ForeignKey(nameof(Creator))]
+        public uint? IdCreator { get; set; }
+
+        public PlayerEntity Creator { get; set; } = null!;
     }
 }

WebApi/Entities/LobbyEntityPlayerEntity.cs

@@ -0,0 +1,27 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Entities
+{
+    [Table("Use")]
+    public class LobbyEntityPlayerEntity
+    {
+        /// <summary>
+        /// a class just to match with the model (this is the "utiliser" entity)
+        /// properties :
+        ///     IdLobby : identifier of the lobby this is for
+        ///     IdPlayer : identifier of the player this is for
+        ///     Lobby : the lobby this is for
+        ///     Player : the player this is for
+        /// </summary>
+        [ForeignKey(nameof(Lobby))]
+        public uint IdLobby { get; set; }
+
+        [ForeignKey(nameof(Player))]
+        public uint IdPlayer { get; set; }
+
+        public LobbyEntity Lobby { get; set; } = null!;
+        public PlayerEntity Player { get; set; } = null!;
+
+        public uint MaxScore { get; set; }
+    }
+}

WebApi/Entities/PlayerEntity.cs

@@ -1,12 +1,9 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Entities
 {
+    [Table("Players")]
     public class PlayerEntity
     {
         /// <summary>
@@ -17,7 +14,7 @@ namespace Entities
         ///     HashedPassword : hashed of the password of the player
         /// </summary>
         [Key]
-        public int? Id { get; set; }
+        public uint? Id { get; set; }
         public string Nickname { get; set; } = null!;
         public string HashedPassword { get; set; } = null!;
     }

WebApi/Entities/PlayerEntityChapterEntity.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Entities
+{
+    [Table("Play")]
+    public class PlayerEntityChapterEntity
+    {
+        /// <summary>
+        /// a class to storage the maximum score of a player for a chapter
+        /// properties :
+        ///     IdChapter : identifier of the chapter this is for
+        ///     IdPlayer : identifier of the player this is for
+        ///     Chapter : the chapter this is for
+        ///     Player : the player this is for
+        /// </summary>
+        [ForeignKey(nameof(Chapter))]
+        public uint IdChapter { get; set; }
+
+        [ForeignKey(nameof(Player))]
+        public uint IdPlayer { get; set; }
+
+        public ChapterEntity Chapter { get; set; } = null!;
+        public PlayerEntity Player { get; set; } = null!;
+
+        public uint MaxScore { get; set; }
+    }
+}

WebApi/Entities/QuestionEntity.cs

@@ -8,6 +8,7 @@ using System.Threading.Tasks;
 
 namespace Entities
 {
+    [Table("Questions")]
     public class QuestionEntity
     {
         /// <summary>
@@ -19,17 +20,24 @@ namespace Entities
         ///     NbFails : number of time that people fail on this question
         ///     IdChapter : identifier of the chapter of the question
         ///     IdAnswerGood : identifier of the right answer to this question
+        ///     Chapter : the chapter of the question
+        ///     AnswerGood : the right answer to this question
         /// </summary>
         [Key]
-        public int? Id { get; set; }
+        public uint? Id { get; set; }
         public string Content { get; set; } = null!;
-        public int Difficulty { get; set; }
-        public int NbFalls { get; set; }
+        [AllowedValues(1, 2, 3)]
+        public byte Difficulty { get; set; }
+        public uint NbFalls { get; set; }
 
-        [ForeignKey(nameof(ChapterEntity))]
-        public int? IdChapter { get; set; }
+        [ForeignKey(nameof(Chapter))]
+        public uint? IdChapter { get; set; }
 
-        [ForeignKey(nameof(AnswerEntity))]
-        public int? IdAnswerGood { get; set; }
+        [ForeignKey(nameof(AnswerGood))]
+        public uint? IdAnswerGood { get; set; }
+
+        public ChapterEntity? Chapter { get; set; }
+
+        public AnswerEntity? AnswerGood { get; set; }
     }
 }

WebApi/Model/Answer.cs

@@ -11,10 +11,12 @@ namespace Model
         ///     id : identifier in the database
         ///     content : content of the answer
         ///     idQuestion : the id of the question which it answer to
+        ///     question : the question which it answer to
         /// </summary>
         private int id;
         private string? content;
         private int idQuestion;
+        public Question? question;
 
         /// <summary>
         /// getters and setters for attributes
@@ -34,17 +36,23 @@ namespace Model
             get => idQuestion == -1 ? null : idQuestion; // null = no idQuestion
             private set { idQuestion = value < -1 || value == null ? -1 : value.Value; }
         }
+
+        public Question? Question
+        {
+            get => question;
+            private set { question = value; IdQuestion = value == null ? -1 : value.Id; }
+        }
         /// <summary>
         /// constructor of an answer
         /// </summary>
         /// <param name="content">the content of the answer</param>
         /// <param name="id">the id in the database</param>
-        /// <param name="idQuestion">the id of the question which it answer to</param>
-        public Answer(string content, int? idQuestion = null, int? id = null)
+        /// <param name="question">the question which it answer to</param>
+        public Answer(string content, Question? question = null, int? id = null)
         {
             Content = content;
             Id = id;
-            IdQuestion = idQuestion;
+            Question = question;
         }
 
     }

WebApi/Model/Lobby.cs

@@ -17,12 +17,14 @@ namespace Model
         ///     name : name of the lobby
         ///     password : password require to access at the lobby
         ///     idCreator : identifier of the creator player
+        ///     creator : the creator player
         /// </summary>
         private int id;
         private string? name;
         private string? password;
         private int nbPlayers;
         private int idCreator;
+        private Player creator;
         /// <summary>
         /// getters and setters of attributes
         /// </summary>
@@ -51,19 +53,24 @@ namespace Model
             get => idCreator == -1 ? null : id;
             private set { idCreator = value == null || value < -1 ? -1 : value.Value; }
         }
+        public Player Creator
+        {
+            get => creator;
+            set { creator = value; idCreator = value.Id; }
+        }
 
         /// <summary>
         /// constructor of a lobby
         /// </summary>
         /// <param name="name">the name of the lobby</param>
-        /// <param name="idCreator">the id of the creator</param>
+        /// <param name="creator">the creator</param>
         /// <param name="password">the password require to access to the lobby</param>
         /// <param name="nbPlayer">the number of players in the lobby</param>
         /// <param name="id">the id of the lobby</param>
-        public Lobby(string name, int idCreator, string password = "", int nbPlayer = 0, int? id = null)
+        public Lobby(string name, Player creator, string password = "", int nbPlayer = 0, int? id = null)
         {
             Name = name;
-            IdCreator = idCreator;
+            Creator = creator;
             Password = password;
             NbPlayers = nbPlayer;
             Id = id;

WebApi/Model/Player.cs

@@ -23,10 +23,10 @@ namespace Model
         /// <summary>
         /// getters and setters for attributes
         /// </summary>
-        public int? Id
+        public int Id
         {
-            get => id == -1 ? null : id;
-            private set { id = value == null || value < -1 ? -1 : value.Value; }
+            get => id;
+            private set { id = value; }
         }
         public string Nickname
         {

WebApi/Model/Question.cs

@@ -19,6 +19,8 @@ namespace Model
         ///     nbFails : number of time that people fail on this question
         ///     idChapter : identifier of the chapter of the question
         ///     idAnswerGood : identifier of the right answer to this question
+        ///     chapter : the chapter of the question
+        ///     answerGood : the right answer to this question
         /// </summary>
         private int id;
         private string? content;
@@ -26,6 +28,8 @@ namespace Model
         private int nbFalls;
         private int idChapter;
         private int idAnswerGood;
+        private Chapter? chapter;
+        private Answer? answerGood;
 
         public int? Id
         {
@@ -58,14 +62,26 @@ namespace Model
             set { idAnswerGood = value == null || value < -1 ? -1 : value.Value; }
         }
 
-        public Question(string content, int idChapter = -1, int id = -1, int idAnswerGood = -1)
+        public Chapter? Chapter
+        {
+            get => chapter;
+            set { chapter = value; IdChapter = value == null ? -1 : value.Id; }
+        }
+
+        public Answer? AnswerGood
+        {
+            get => answerGood;
+            set { answerGood = value; IdAnswerGood = value == null ? -1 : value.Id; }
+        }
+
+        public Question(string content, Chapter? chapter = null, int id = -1, Answer? answerGood = null)
         {
             Id = id;
             Content = content;
             Difficulty = 1;
             NbFalls = 0;
-            IdChapter = idChapter;
-            IdAnswerGood = idAnswerGood;
+            Chapter = chapter;
+            AnswerGood = answerGood;
         }
     }
 }