🚧 Work in progress on entities

src/DbContextLib/LibraryContext.cs

@@ -8,6 +8,7 @@
 
 using Entities;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Migrations.Operations;
 
 namespace DbContextLib
 {
@@ -112,6 +113,11 @@ namespace DbContextLib
             modelBuilder.Entity<AthleteEntity>()
                         .Property(at => at.IdAthlete)
                         .ValueGeneratedOnAdd();
+            // add image column type
+            // modelBuilder.Entity<AthleteEntity>()
+            //             .Property(at => at.ProfilPicture)
+            //             .HasColumnType("image");
+
 
             //primary key of StatisticEntity
             modelBuilder.Entity<StatisticEntity>()
@@ -121,7 +127,7 @@ namespace DbContextLib
                         .Property(s => s.IdStatistic)
                         .ValueGeneratedOnAdd();
 
-            //primary key of 
+            //primary key of TrainingEntity
             modelBuilder.Entity<TrainingEntity>()
                         .HasKey(t => t.IdTraining);
             //generation mode (at insertion)
@@ -129,7 +135,7 @@ namespace DbContextLib
                         .Property(t => t.IdTraining)
                         .ValueGeneratedOnAdd();
             
-            //primary key of 
+            //primary key of NotificationEntity
             modelBuilder.Entity<NotificationEntity>()
                         .HasKey(n => n.IdNotif);
             //generation mode (at insertion)
@@ -137,28 +143,57 @@ namespace DbContextLib
                         .Property(n => n.IdNotif)
                         .ValueGeneratedOnAdd();
 
+            modelBuilder.Entity<FriendshipEntity>()
+                        .HasKey(f => new { f.FollowingId, f.FollowerId });
+
+            modelBuilder.Entity<FriendshipEntity>()
+                        .HasOne(fing => fing.Following)
+                        .WithMany(fings => fings.Followings)
+                        .HasForeignKey(fing => fing.FollowingId);
+
+            modelBuilder.Entity<FriendshipEntity>()
+                        .HasOne(fer => fer.Follower)
+                        .WithMany(fers => fers.Followers)
+                        .HasForeignKey(fing => fing.FollowerId);
+
+            // !
+            // ? Plusieurs questions sur les required ou non, différence difficile à comprendre
+
             modelBuilder.Entity<AthleteEntity>()
-                .HasMany(at => at.Trainings)
+                .HasMany(at => at.TrainingsCoach)
-                .WithOne(n => n.Athlete)
+                .WithOne(tc => tc.Coach)
-                .HasForeignKey(n => n.AthleteId)
+                .HasForeignKey(tc => tc.CoachId);
-                .IsRequired();
 
             modelBuilder.Entity<AthleteEntity>()
-                .HasMany(at => at.Trainings)
+                .HasMany(at => at.TrainingsAthlete)
-                .WithOne(t => t.Athlete)
+                .WithMany(ta => ta.Athletes);
-                .HasForeignKey(t => t.AthleteId)
+            
-                .IsRequired();
+            modelBuilder.Entity<AthleteEntity>()
+                    .HasMany(at => at.NotificationsReceived)
+                    .WithMany(nr => nr.Receivers);
+
+            modelBuilder.Entity<AthleteEntity>()
+                    .HasMany(at => at.NotificationsSent)
+                    .WithOne(ns => ns.Sender)
+                    .HasForeignKey(ns => ns.SenderId);
+                    // required car on veut toujours savoir le receveur et l'envoyeur de la notification meme admin ou systeme
 
             modelBuilder.Entity<AthleteEntity>()
                 .HasMany(at => at.Statistics)
                 .WithOne(s => s.Athlete)
                 .HasForeignKey(s => s.AthleteId)
-                .IsRequired();
+                .IsRequired(false);
 
             modelBuilder.Entity<AthleteEntity>()
                 .HasMany(at => at.Activities)
                 .WithOne(a => a.Athlete)
                 .HasForeignKey(a => a.AthleteId)
+                .IsRequired(false);
+
+            modelBuilder.Entity<ActivityEntity>()
+                .HasMany(a => a.HeartRates)
+                .WithOne(h => h.Activity)
+                .HasForeignKey(h => h.ActivityId)
                 .IsRequired();
 
             modelBuilder.Entity<DataSourceEntity>()
@@ -167,17 +202,20 @@ namespace DbContextLib
                 .HasForeignKey(a => a.DataSourceId)
                 .IsRequired();
             
-            modelBuilder.Entity<ActivityEntity>()
-                .HasMany(a => a.HeartRates)
-                .WithOne(h => h.Activity)
-                .HasForeignKey(h => h.ActivityId)
-                .IsRequired();
-            
             modelBuilder.Entity<DataSourceEntity>()
                 .HasMany(ds => ds.Activities)
                 .WithOne(at => at.DataSource)
                 .HasForeignKey(at => at.DataSourceId)
                 .IsRequired(false);
+
+            // modelBuilder.Entity<AthleteEntity>()
+            //         .HasMany(fer => fer.Followers)
+            //         .WithMany(fing => fing.Followings)
+            //         .UsingEntity<FriendshipEntity>(
+            //             l => l.HasOne<AthleteEntity>().WithMany().HasForeignKey(fer => fer.FollowerId),
+            //             r => r.HasOne<AthleteEntity>().WithMany().HasForeignKey(fing => fing.FollowingId),
+            //             j => j.Property(f => f.StartDate).HasDefaultValueSql("CURRENT_TIMESTAMP")
+            //         );
         }
     }
 }

src/Entities/AthleteEntity.cs

@@ -87,18 +87,25 @@ namespace Entities
         /// </summary>
         public bool IsCoach { get; set; }
 
+        public required byte[] ProfilPicture { get; set; }
+
+        
+
         public ICollection<ActivityEntity> Activities { get; set; } = new List<ActivityEntity>();
 
         public ICollection<StatisticEntity> Statistics { get; set; } = new List<StatisticEntity>();
 
-        public ICollection<TrainingEntity> Trainings { get; set; } = new List<TrainingEntity>();
+        public ICollection<TrainingEntity> TrainingsAthlete { get; set; } = new List<TrainingEntity>();
+        public ICollection<TrainingEntity> TrainingsCoach { get; set; } = new List<TrainingEntity>();
 
-        public ICollection<NotificationEntity> Notifications { get; set; } = new List<NotificationEntity>();
+        public ICollection<NotificationEntity> NotificationsReceived { get; set; } = new List<NotificationEntity>();
+        public ICollection<NotificationEntity> NotificationsSent { get; set; } = new List<NotificationEntity>();
 
         public int? DataSourceId { get; set; }
 
         public DataSourceEntity? DataSource { get; set; }
 
-        public ICollection<AthleteEntity> 
+        public ICollection<FriendshipEntity> Followers { get; set; } = [];
+        public ICollection<FriendshipEntity> Followings { get; set; } = [];
     }
 }

src/Entities/FriendshipEntity.cs

@@ -0,0 +1,14 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Entities;
+
+public class FriendshipEntity
+{
+    [ForeignKey("FollowingId")]
+    public int FollowingId { get; set; }
+    public AthleteEntity Following { get; set; }
+    [ForeignKey("FollowerId")]
+    public int FollowerId { get; set; }
+    public AthleteEntity Follower { get; set; }
+    public DateTime StartDate { get; set; }
+}

src/Entities/NotificationEntity.cs

@@ -49,8 +49,9 @@ namespace Entities
         [MaxLength(100)]
         public string Urgence { get; set; } = null!;
 
-        public int AthleteId { get; set; }
+        public int SenderId { get; set; }
 
-        public AthleteEntity Athlete { get; set; } = null!;
+        public AthleteEntity Sender { get; set; } = null!;
+        public ICollection<AthleteEntity> Receivers { get; set; } = new List<AthleteEntity>();
     }
 }

src/Entities/Picture.cs

@@ -0,0 +1,11 @@
+using System.ComponentModel.DataAnnotations;
+
+public class Picture
+{
+
+        [Key]
+        public Guid Id { get; set; }
+        [Required]
+        public byte[] Bytes { get; set; }  
+
+}

src/Entities/TrainingEntity.cs

@@ -53,8 +53,9 @@ namespace Entities
         [MaxLength(300)]
         public string? FeedBack { get; set; }
 
-        public int AthleteId { get; set; }
+        public int CoachId { get; set; }
 
-        public AthleteEntity Athlete { get; set; } = null!;
+        public AthleteEntity Coach { get; set; } = null!;
+        public ICollection<AthleteEntity> Athletes { get; set; } = new List<AthleteEntity>();
     }
 }

src/StubbedContextLib/FriendshipStubbedContext.cs

@@ -0,0 +1,49 @@
+//-----------------------------------------------------------------------
+// FILENAME: FriendshipStubbedContext.cs
+// PROJECT: StubbedContextLib
+// SOLUTION: HeartTrack
+// DATE CREATED: 22/02/2024
+// AUTHOR: Antoine PEREDERII
+//-----------------------------------------------------------------------
+
+using DbContextLib;
+using Entities;
+using Microsoft.EntityFrameworkCore;
+
+namespace StubbedContextLib
+{
+    /// <summary>
+    /// Represents the stubbed context for friendship entities.
+    /// </summary>
+    public class FriendshipStubbedContext : DataSourceStubbedContext
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FriendshipStubbedContext"/> class.
+        /// </summary>
+        public FriendshipStubbedContext() : base() { }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FriendshipStubbedContext"/> class with the specified options.
+        /// </summary>
+        /// <param name="options">The options for the context.</param>
+        public FriendshipStubbedContext(DbContextOptions<LibraryContext> options) : base(options) { }
+
+        /// <summary>
+        /// Configures the model for the heart rate stubbed context.
+        /// </summary>
+        /// <param name="modelBuilder">The model builder instance.</param>
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            base.OnModelCreating(modelBuilder);
+
+            modelBuilder.Entity<FriendshipEntity>().HasData(
+                new FriendshipEntity { FollowerId = 1, FollowingId = 2 },
+                new FriendshipEntity { FollowerId = 1, FollowingId = 3 },
+                new FriendshipEntity { FollowerId = 1, FollowingId = 4 },
+                new FriendshipEntity { FollowerId = 1, FollowingId = 5 },
+                new FriendshipEntity { FollowerId = 2, FollowingId = 1 },
+                new FriendshipEntity { FollowerId = 2, FollowingId = 3 }
+            );
+        }
+    }
+}

src/StubbedContextLib/HeartRateStubbedContext.cs

@@ -15,7 +15,7 @@ namespace StubbedContextLib
     /// <summary>
     /// Represents the stubbed context for heart rate entities.
     /// </summary>
-    public class HeartRateStubbedContext : DataSourceStubbedContext
+    public class HeartRateStubbedContext : FriendshipStubbedContext
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="HeartRateStubbedContext"/> class.

src/StubbedContextLib/Migrations/20240307081406_MyMigrations.Designer.cs

@@ -11,7 +11,7 @@ using StubbedContextLib;
 namespace StubbedContextLib.Migrations
 {
     [DbContext(typeof(TrainingStubbedContext))]
-    [Migration("20240226170604_MyMigrations")]
+    [Migration("20240307081406_MyMigrations")]
     partial class MyMigrations
     {
         /// <inheritdoc />
@@ -20,6 +20,36 @@ namespace StubbedContextLib.Migrations
 #pragma warning disable 612, 618
             modelBuilder.HasAnnotation("ProductVersion", "8.0.2");
 
+            modelBuilder.Entity("AthleteEntityNotificationEntity", b =>
+                {
+                    b.Property<int>("NotificationsReceivedIdNotif")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ReceiversIdAthlete")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("NotificationsReceivedIdNotif", "ReceiversIdAthlete");
+
+                    b.HasIndex("ReceiversIdAthlete");
+
+                    b.ToTable("AthleteEntityNotificationEntity");
+                });
+
+            modelBuilder.Entity("AthleteEntityTrainingEntity", b =>
+                {
+                    b.Property<int>("AthletesIdAthlete")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("TrainingsAthleteIdTraining")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("AthletesIdAthlete", "TrainingsAthleteIdTraining");
+
+                    b.HasIndex("TrainingsAthleteIdTraining");
+
+                    b.ToTable("AthleteEntityTrainingEntity");
+                });
+
             modelBuilder.Entity("Entities.ActivityEntity", b =>
                 {
                     b.Property<int>("IdActivity")
@@ -409,6 +439,62 @@ namespace StubbedContextLib.Migrations
                         });
                 });
 
+            modelBuilder.Entity("Entities.FriendshipEntity", b =>
+                {
+                    b.Property<int>("FollowingId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("FollowerId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("StartDate")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("FollowingId", "FollowerId");
+
+                    b.HasIndex("FollowerId");
+
+                    b.ToTable("FriendshipEntity");
+
+                    b.HasData(
+                        new
+                        {
+                            FollowingId = 2,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 3,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 4,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 5,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 1,
+                            FollowerId = 2,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 3,
+                            FollowerId = 2,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        });
+                });
+
             modelBuilder.Entity("Entities.HeartRateEntity", b =>
                 {
                     b.Property<int>("IdHeartRate")
@@ -506,9 +592,6 @@ namespace StubbedContextLib.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("AthleteId")
-                        .HasColumnType("INTEGER");
-
                     b.Property<DateTime>("Date")
                         .HasColumnType("TEXT");
 
@@ -517,6 +600,9 @@ namespace StubbedContextLib.Migrations
                         .HasMaxLength(100)
                         .HasColumnType("TEXT");
 
+                    b.Property<int>("SenderId")
+                        .HasColumnType("INTEGER");
+
                     b.Property<bool>("Statut")
                         .HasColumnType("INTEGER");
 
@@ -527,7 +613,7 @@ namespace StubbedContextLib.Migrations
 
                     b.HasKey("IdNotif");
 
-                    b.HasIndex("AthleteId");
+                    b.HasIndex("SenderId");
 
                     b.ToTable("Notification");
 
@@ -535,45 +621,45 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdNotif = 1,
-                            AthleteId = 1,
                             Date = new DateTime(2023, 12, 25, 13, 0, 40, 0, DateTimeKind.Unspecified),
                             Message = "You have a new activity to check",
+                            SenderId = 1,
                             Statut = true,
                             Urgence = "A"
                         },
                         new
                         {
                             IdNotif = 2,
-                            AthleteId = 2,
                             Date = new DateTime(2023, 12, 26, 13, 10, 40, 0, DateTimeKind.Unspecified),
                             Message = "You have a new athlete to check",
+                            SenderId = 2,
                             Statut = false,
                             Urgence = "3"
                         },
                         new
                         {
                             IdNotif = 3,
-                            AthleteId = 3,
                             Date = new DateTime(2023, 12, 26, 16, 10, 4, 0, DateTimeKind.Unspecified),
                             Message = "You have a new heart rate to check",
+                            SenderId = 3,
                             Statut = true,
                             Urgence = "2"
                         },
                         new
                         {
                             IdNotif = 4,
-                            AthleteId = 4,
                             Date = new DateTime(2024, 1, 12, 9, 30, 50, 0, DateTimeKind.Unspecified),
                             Message = "You have a new data source to check",
+                            SenderId = 4,
                             Statut = false,
                             Urgence = "1"
                         },
                         new
                         {
                             IdNotif = 5,
-                            AthleteId = 5,
                             Date = new DateTime(2024, 2, 22, 12, 10, 0, 0, DateTimeKind.Unspecified),
                             Message = "You have a new notification to check",
+                            SenderId = 5,
                             Statut = true,
                             Urgence = "3"
                         });
@@ -668,7 +754,7 @@ namespace StubbedContextLib.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("AthleteId")
+                    b.Property<int>("CoachId")
                         .HasColumnType("INTEGER");
 
                     b.Property<DateOnly>("Date")
@@ -690,7 +776,7 @@ namespace StubbedContextLib.Migrations
 
                     b.HasKey("IdTraining");
 
-                    b.HasIndex("AthleteId");
+                    b.HasIndex("CoachId");
 
                     b.ToTable("Training");
 
@@ -698,7 +784,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 1,
-                            AthleteId = 1,
+                            CoachId = 1,
                             Date = new DateOnly(2024, 1, 19),
                             Description = "Running",
                             FeedBack = "Good",
@@ -708,7 +794,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 2,
-                            AthleteId = 5,
+                            CoachId = 5,
                             Date = new DateOnly(2024, 2, 20),
                             Description = "Cycling",
                             Latitude = 48.8566f,
@@ -717,7 +803,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 3,
-                            AthleteId = 4,
+                            CoachId = 4,
                             Date = new DateOnly(2024, 2, 21),
                             FeedBack = "Good",
                             Latitude = 48.8566f,
@@ -726,7 +812,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 4,
-                            AthleteId = 3,
+                            CoachId = 3,
                             Date = new DateOnly(2024, 2, 22),
                             Description = "Running",
                             FeedBack = "Good",
@@ -736,7 +822,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 5,
-                            AthleteId = 1,
+                            CoachId = 1,
                             Date = new DateOnly(2024, 2, 23),
                             Description = "Cycling",
                             Latitude = 48.8566f,
@@ -744,13 +830,41 @@ namespace StubbedContextLib.Migrations
                         });
                 });
 
+            modelBuilder.Entity("AthleteEntityNotificationEntity", b =>
+                {
+                    b.HasOne("Entities.NotificationEntity", null)
+                        .WithMany()
+                        .HasForeignKey("NotificationsReceivedIdNotif")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.AthleteEntity", null)
+                        .WithMany()
+                        .HasForeignKey("ReceiversIdAthlete")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("AthleteEntityTrainingEntity", b =>
+                {
+                    b.HasOne("Entities.AthleteEntity", null)
+                        .WithMany()
+                        .HasForeignKey("AthletesIdAthlete")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.TrainingEntity", null)
+                        .WithMany()
+                        .HasForeignKey("TrainingsAthleteIdTraining")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("Entities.ActivityEntity", b =>
                 {
                     b.HasOne("Entities.AthleteEntity", "Athlete")
                         .WithMany("Activities")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("AthleteId");
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
 
                     b.HasOne("Entities.DataSourceEntity", "DataSource")
                         .WithMany("Activities")
@@ -770,6 +884,25 @@ namespace StubbedContextLib.Migrations
                     b.Navigation("DataSource");
                 });
 
+            modelBuilder.Entity("Entities.FriendshipEntity", b =>
+                {
+                    b.HasOne("Entities.AthleteEntity", "Follower")
+                        .WithMany("Followers")
+                        .HasForeignKey("FollowerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.AthleteEntity", "Following")
+                        .WithMany("Followings")
+                        .HasForeignKey("FollowingId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Follower");
+
+                    b.Navigation("Following");
+                });
+
             modelBuilder.Entity("Entities.HeartRateEntity", b =>
                 {
                     b.HasOne("Entities.ActivityEntity", "Activity")
@@ -783,35 +916,33 @@ namespace StubbedContextLib.Migrations
 
             modelBuilder.Entity("Entities.NotificationEntity", b =>
                 {
-                    b.HasOne("Entities.AthleteEntity", "Athlete")
+                    b.HasOne("Entities.AthleteEntity", "Sender")
-                        .WithMany("Notifications")
+                        .WithMany("NotificationsSent")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("SenderId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.Navigation("Athlete");
+                    b.Navigation("Sender");
                 });
 
             modelBuilder.Entity("Entities.StatisticEntity", b =>
                 {
                     b.HasOne("Entities.AthleteEntity", "Athlete")
                         .WithMany("Statistics")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("AthleteId");
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
 
                     b.Navigation("Athlete");
                 });
 
             modelBuilder.Entity("Entities.TrainingEntity", b =>
                 {
-                    b.HasOne("Entities.AthleteEntity", "Athlete")
+                    b.HasOne("Entities.AthleteEntity", "Coach")
-                        .WithMany("Trainings")
+                        .WithMany("TrainingsCoach")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("CoachId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.Navigation("Athlete");
+                    b.Navigation("Coach");
                 });
 
             modelBuilder.Entity("Entities.ActivityEntity", b =>
@@ -823,11 +954,15 @@ namespace StubbedContextLib.Migrations
                 {
                     b.Navigation("Activities");
 
-                    b.Navigation("Notifications");
+                    b.Navigation("Followers");
+
+                    b.Navigation("Followings");
+
+                    b.Navigation("NotificationsSent");
 
                     b.Navigation("Statistics");
 
-                    b.Navigation("Trainings");
+                    b.Navigation("TrainingsCoach");
                 });
 
             modelBuilder.Entity("Entities.DataSourceEntity", b =>

src/StubbedContextLib/Migrations/20240307081406_MyMigrations.cs

@@ -85,8 +85,7 @@ namespace StubbedContextLib.Migrations
                         name: "FK_Activity_Athlete_AthleteId",
                         column: x => x.AthleteId,
                         principalTable: "Athlete",
-                        principalColumn: "IdAthlete",
+                        principalColumn: "IdAthlete");
-                        onDelete: ReferentialAction.Cascade);
                     table.ForeignKey(
                         name: "FK_Activity_DataSource_DataSourceId",
                         column: x => x.DataSourceId,
@@ -94,6 +93,31 @@ namespace StubbedContextLib.Migrations
                         principalColumn: "IdSource");
                 });
 
+            migrationBuilder.CreateTable(
+                name: "FriendshipEntity",
+                columns: table => new
+                {
+                    FollowingId = table.Column<int>(type: "INTEGER", nullable: false),
+                    FollowerId = table.Column<int>(type: "INTEGER", nullable: false),
+                    StartDate = table.Column<DateTime>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_FriendshipEntity", x => new { x.FollowingId, x.FollowerId });
+                    table.ForeignKey(
+                        name: "FK_FriendshipEntity_Athlete_FollowerId",
+                        column: x => x.FollowerId,
+                        principalTable: "Athlete",
+                        principalColumn: "IdAthlete",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_FriendshipEntity_Athlete_FollowingId",
+                        column: x => x.FollowingId,
+                        principalTable: "Athlete",
+                        principalColumn: "IdAthlete",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
             migrationBuilder.CreateTable(
                 name: "Notification",
                 columns: table => new
@@ -104,14 +128,14 @@ namespace StubbedContextLib.Migrations
                     Date = table.Column<DateTime>(type: "TEXT", nullable: false),
                     Statut = table.Column<bool>(type: "INTEGER", nullable: false),
                     Urgence = table.Column<string>(type: "TEXT", maxLength: 100, nullable: false),
-                    AthleteId = table.Column<int>(type: "INTEGER", nullable: false)
+                    SenderId = table.Column<int>(type: "INTEGER", nullable: false)
                 },
                 constraints: table =>
                 {
                     table.PrimaryKey("PK_Notification", x => x.IdNotif);
                     table.ForeignKey(
-                        name: "FK_Notification_Athlete_AthleteId",
+                        name: "FK_Notification_Athlete_SenderId",
-                        column: x => x.AthleteId,
+                        column: x => x.SenderId,
                         principalTable: "Athlete",
                         principalColumn: "IdAthlete",
                         onDelete: ReferentialAction.Cascade);
@@ -137,8 +161,7 @@ namespace StubbedContextLib.Migrations
                         name: "FK_Statistic_Athlete_AthleteId",
                         column: x => x.AthleteId,
                         principalTable: "Athlete",
-                        principalColumn: "IdAthlete",
+                        principalColumn: "IdAthlete");
-                        onDelete: ReferentialAction.Cascade);
                 });
 
             migrationBuilder.CreateTable(
@@ -152,14 +175,14 @@ namespace StubbedContextLib.Migrations
                     Latitude = table.Column<float>(type: "REAL", nullable: false),
                     Longitude = table.Column<float>(type: "REAL", nullable: false),
                     FeedBack = table.Column<string>(type: "TEXT", maxLength: 300, nullable: true),
-                    AthleteId = table.Column<int>(type: "INTEGER", nullable: false)
+                    CoachId = table.Column<int>(type: "INTEGER", nullable: false)
                 },
                 constraints: table =>
                 {
                     table.PrimaryKey("PK_Training", x => x.IdTraining);
                     table.ForeignKey(
-                        name: "FK_Training_Athlete_AthleteId",
+                        name: "FK_Training_Athlete_CoachId",
-                        column: x => x.AthleteId,
+                        column: x => x.CoachId,
                         principalTable: "Athlete",
                         principalColumn: "IdAthlete",
                         onDelete: ReferentialAction.Cascade);
@@ -190,6 +213,54 @@ namespace StubbedContextLib.Migrations
                         onDelete: ReferentialAction.Cascade);
                 });
 
+            migrationBuilder.CreateTable(
+                name: "AthleteEntityNotificationEntity",
+                columns: table => new
+                {
+                    NotificationsReceivedIdNotif = table.Column<int>(type: "INTEGER", nullable: false),
+                    ReceiversIdAthlete = table.Column<int>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AthleteEntityNotificationEntity", x => new { x.NotificationsReceivedIdNotif, x.ReceiversIdAthlete });
+                    table.ForeignKey(
+                        name: "FK_AthleteEntityNotificationEntity_Athlete_ReceiversIdAthlete",
+                        column: x => x.ReceiversIdAthlete,
+                        principalTable: "Athlete",
+                        principalColumn: "IdAthlete",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_AthleteEntityNotificationEntity_Notification_NotificationsReceivedIdNotif",
+                        column: x => x.NotificationsReceivedIdNotif,
+                        principalTable: "Notification",
+                        principalColumn: "IdNotif",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AthleteEntityTrainingEntity",
+                columns: table => new
+                {
+                    AthletesIdAthlete = table.Column<int>(type: "INTEGER", nullable: false),
+                    TrainingsAthleteIdTraining = table.Column<int>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AthleteEntityTrainingEntity", x => new { x.AthletesIdAthlete, x.TrainingsAthleteIdTraining });
+                    table.ForeignKey(
+                        name: "FK_AthleteEntityTrainingEntity_Athlete_AthletesIdAthlete",
+                        column: x => x.AthletesIdAthlete,
+                        principalTable: "Athlete",
+                        principalColumn: "IdAthlete",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_AthleteEntityTrainingEntity_Training_TrainingsAthleteIdTraining",
+                        column: x => x.TrainingsAthleteIdTraining,
+                        principalTable: "Training",
+                        principalColumn: "IdTraining",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
             migrationBuilder.InsertData(
                 table: "Athlete",
                 columns: new[] { "IdAthlete", "DataSourceId", "DateOfBirth", "Email", "FirstName", "IsCoach", "LastName", "Length", "Password", "Sexe", "Username", "Weight" },
@@ -233,14 +304,23 @@ namespace StubbedContextLib.Migrations
                     { 5, 3, new DateOnly(1991, 1, 1), "bruce.lee@example.com", "Bruce", false, "Lee", 2.0, "hello321", "M", "Lee", 90f }
                 });
 
+            migrationBuilder.InsertData(
+                table: "FriendshipEntity",
+                columns: new[] { "FollowerId", "FollowingId", "StartDate" },
+                values: new object[,]
+                {
+                    { 1, 3, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified) },
+                    { 1, 4, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified) }
+                });
+
             migrationBuilder.InsertData(
                 table: "Notification",
-                columns: new[] { "IdNotif", "AthleteId", "Date", "Message", "Statut", "Urgence" },
+                columns: new[] { "IdNotif", "Date", "Message", "SenderId", "Statut", "Urgence" },
                 values: new object[,]
                 {
-                    { 1, 1, new DateTime(2023, 12, 25, 13, 0, 40, 0, DateTimeKind.Unspecified), "You have a new activity to check", true, "A" },
+                    { 1, new DateTime(2023, 12, 25, 13, 0, 40, 0, DateTimeKind.Unspecified), "You have a new activity to check", 1, true, "A" },
-                    { 3, 3, new DateTime(2023, 12, 26, 16, 10, 4, 0, DateTimeKind.Unspecified), "You have a new heart rate to check", true, "2" },
+                    { 3, new DateTime(2023, 12, 26, 16, 10, 4, 0, DateTimeKind.Unspecified), "You have a new heart rate to check", 3, true, "2" },
-                    { 4, 4, new DateTime(2024, 1, 12, 9, 30, 50, 0, DateTimeKind.Unspecified), "You have a new data source to check", false, "1" }
+                    { 4, new DateTime(2024, 1, 12, 9, 30, 50, 0, DateTimeKind.Unspecified), "You have a new data source to check", 4, false, "1" }
                 });
 
             migrationBuilder.InsertData(
@@ -256,7 +336,7 @@ namespace StubbedContextLib.Migrations
 
             migrationBuilder.InsertData(
                 table: "Training",
-                columns: new[] { "IdTraining", "AthleteId", "Date", "Description", "FeedBack", "Latitude", "Longitude" },
+                columns: new[] { "IdTraining", "CoachId", "Date", "Description", "FeedBack", "Latitude", "Longitude" },
                 values: new object[,]
                 {
                     { 1, 1, new DateOnly(2024, 1, 19), "Running", "Good", 48.8566f, 2.3522f },
@@ -274,6 +354,17 @@ namespace StubbedContextLib.Migrations
                     { 4, 5, 0.5f, 20f, 3, new DateOnly(2024, 1, 2), 5, new TimeOnly(16, 1, 55), false, 0, 0, 0.5f, new TimeOnly(15, 0, 0), "Walking", 0.5f, 0.5f }
                 });
 
+            migrationBuilder.InsertData(
+                table: "FriendshipEntity",
+                columns: new[] { "FollowerId", "FollowingId", "StartDate" },
+                values: new object[,]
+                {
+                    { 2, 1, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified) },
+                    { 1, 2, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified) },
+                    { 2, 3, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified) },
+                    { 1, 5, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified) }
+                });
+
             migrationBuilder.InsertData(
                 table: "HeartRate",
                 columns: new[] { "IdHeartRate", "ActivityId", "Altitude", "Bpm", "Latitude", "Longitude", "Temperature", "Time" },
@@ -285,11 +376,11 @@ namespace StubbedContextLib.Migrations
 
             migrationBuilder.InsertData(
                 table: "Notification",
-                columns: new[] { "IdNotif", "AthleteId", "Date", "Message", "Statut", "Urgence" },
+                columns: new[] { "IdNotif", "Date", "Message", "SenderId", "Statut", "Urgence" },
                 values: new object[,]
                 {
-                    { 2, 2, new DateTime(2023, 12, 26, 13, 10, 40, 0, DateTimeKind.Unspecified), "You have a new athlete to check", false, "3" },
+                    { 2, new DateTime(2023, 12, 26, 13, 10, 40, 0, DateTimeKind.Unspecified), "You have a new athlete to check", 2, false, "3" },
-                    { 5, 5, new DateTime(2024, 2, 22, 12, 10, 0, 0, DateTimeKind.Unspecified), "You have a new notification to check", true, "3" }
+                    { 5, new DateTime(2024, 2, 22, 12, 10, 0, 0, DateTimeKind.Unspecified), "You have a new notification to check", 5, true, "3" }
                 });
 
             migrationBuilder.InsertData(
@@ -299,7 +390,7 @@ namespace StubbedContextLib.Migrations
 
             migrationBuilder.InsertData(
                 table: "Training",
-                columns: new[] { "IdTraining", "AthleteId", "Date", "Description", "FeedBack", "Latitude", "Longitude" },
+                columns: new[] { "IdTraining", "CoachId", "Date", "Description", "FeedBack", "Latitude", "Longitude" },
                 values: new object[] { 2, 5, new DateOnly(2024, 2, 20), "Cycling", null, 48.8566f, 2.3522f });
 
             migrationBuilder.InsertData(
@@ -327,15 +418,30 @@ namespace StubbedContextLib.Migrations
                 table: "Athlete",
                 column: "DataSourceId");
 
+            migrationBuilder.CreateIndex(
+                name: "IX_AthleteEntityNotificationEntity_ReceiversIdAthlete",
+                table: "AthleteEntityNotificationEntity",
+                column: "ReceiversIdAthlete");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AthleteEntityTrainingEntity_TrainingsAthleteIdTraining",
+                table: "AthleteEntityTrainingEntity",
+                column: "TrainingsAthleteIdTraining");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_FriendshipEntity_FollowerId",
+                table: "FriendshipEntity",
+                column: "FollowerId");
+
             migrationBuilder.CreateIndex(
                 name: "IX_HeartRate_ActivityId",
                 table: "HeartRate",
                 column: "ActivityId");
 
             migrationBuilder.CreateIndex(
-                name: "IX_Notification_AthleteId",
+                name: "IX_Notification_SenderId",
                 table: "Notification",
-                column: "AthleteId");
+                column: "SenderId");
 
             migrationBuilder.CreateIndex(
                 name: "IX_Statistic_AthleteId",
@@ -343,23 +449,32 @@ namespace StubbedContextLib.Migrations
                 column: "AthleteId");
 
             migrationBuilder.CreateIndex(
-                name: "IX_Training_AthleteId",
+                name: "IX_Training_CoachId",
                 table: "Training",
-                column: "AthleteId");
+                column: "CoachId");
         }
 
         /// <inheritdoc />
         protected override void Down(MigrationBuilder migrationBuilder)
         {
             migrationBuilder.DropTable(
-                name: "HeartRate");
+                name: "AthleteEntityNotificationEntity");
 
             migrationBuilder.DropTable(
-                name: "Notification");
+                name: "AthleteEntityTrainingEntity");
+
+            migrationBuilder.DropTable(
+                name: "FriendshipEntity");
+
+            migrationBuilder.DropTable(
+                name: "HeartRate");
 
             migrationBuilder.DropTable(
                 name: "Statistic");
 
+            migrationBuilder.DropTable(
+                name: "Notification");
+
             migrationBuilder.DropTable(
                 name: "Training");
 

src/StubbedContextLib/Migrations/TrainingStubbedContextModelSnapshot.cs

@@ -17,6 +17,36 @@ namespace StubbedContextLib.Migrations
 #pragma warning disable 612, 618
             modelBuilder.HasAnnotation("ProductVersion", "8.0.2");
 
+            modelBuilder.Entity("AthleteEntityNotificationEntity", b =>
+                {
+                    b.Property<int>("NotificationsReceivedIdNotif")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ReceiversIdAthlete")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("NotificationsReceivedIdNotif", "ReceiversIdAthlete");
+
+                    b.HasIndex("ReceiversIdAthlete");
+
+                    b.ToTable("AthleteEntityNotificationEntity");
+                });
+
+            modelBuilder.Entity("AthleteEntityTrainingEntity", b =>
+                {
+                    b.Property<int>("AthletesIdAthlete")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("TrainingsAthleteIdTraining")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("AthletesIdAthlete", "TrainingsAthleteIdTraining");
+
+                    b.HasIndex("TrainingsAthleteIdTraining");
+
+                    b.ToTable("AthleteEntityTrainingEntity");
+                });
+
             modelBuilder.Entity("Entities.ActivityEntity", b =>
                 {
                     b.Property<int>("IdActivity")
@@ -406,6 +436,62 @@ namespace StubbedContextLib.Migrations
                         });
                 });
 
+            modelBuilder.Entity("Entities.FriendshipEntity", b =>
+                {
+                    b.Property<int>("FollowingId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("FollowerId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("StartDate")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("FollowingId", "FollowerId");
+
+                    b.HasIndex("FollowerId");
+
+                    b.ToTable("FriendshipEntity");
+
+                    b.HasData(
+                        new
+                        {
+                            FollowingId = 2,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 3,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 4,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 5,
+                            FollowerId = 1,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 1,
+                            FollowerId = 2,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        },
+                        new
+                        {
+                            FollowingId = 3,
+                            FollowerId = 2,
+                            StartDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified)
+                        });
+                });
+
             modelBuilder.Entity("Entities.HeartRateEntity", b =>
                 {
                     b.Property<int>("IdHeartRate")
@@ -503,9 +589,6 @@ namespace StubbedContextLib.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("AthleteId")
-                        .HasColumnType("INTEGER");
-
                     b.Property<DateTime>("Date")
                         .HasColumnType("TEXT");
 
@@ -514,6 +597,9 @@ namespace StubbedContextLib.Migrations
                         .HasMaxLength(100)
                         .HasColumnType("TEXT");
 
+                    b.Property<int>("SenderId")
+                        .HasColumnType("INTEGER");
+
                     b.Property<bool>("Statut")
                         .HasColumnType("INTEGER");
 
@@ -524,7 +610,7 @@ namespace StubbedContextLib.Migrations
 
                     b.HasKey("IdNotif");
 
-                    b.HasIndex("AthleteId");
+                    b.HasIndex("SenderId");
 
                     b.ToTable("Notification");
 
@@ -532,45 +618,45 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdNotif = 1,
-                            AthleteId = 1,
                             Date = new DateTime(2023, 12, 25, 13, 0, 40, 0, DateTimeKind.Unspecified),
                             Message = "You have a new activity to check",
+                            SenderId = 1,
                             Statut = true,
                             Urgence = "A"
                         },
                         new
                         {
                             IdNotif = 2,
-                            AthleteId = 2,
                             Date = new DateTime(2023, 12, 26, 13, 10, 40, 0, DateTimeKind.Unspecified),
                             Message = "You have a new athlete to check",
+                            SenderId = 2,
                             Statut = false,
                             Urgence = "3"
                         },
                         new
                         {
                             IdNotif = 3,
-                            AthleteId = 3,
                             Date = new DateTime(2023, 12, 26, 16, 10, 4, 0, DateTimeKind.Unspecified),
                             Message = "You have a new heart rate to check",
+                            SenderId = 3,
                             Statut = true,
                             Urgence = "2"
                         },
                         new
                         {
                             IdNotif = 4,
-                            AthleteId = 4,
                             Date = new DateTime(2024, 1, 12, 9, 30, 50, 0, DateTimeKind.Unspecified),
                             Message = "You have a new data source to check",
+                            SenderId = 4,
                             Statut = false,
                             Urgence = "1"
                         },
                         new
                         {
                             IdNotif = 5,
-                            AthleteId = 5,
                             Date = new DateTime(2024, 2, 22, 12, 10, 0, 0, DateTimeKind.Unspecified),
                             Message = "You have a new notification to check",
+                            SenderId = 5,
                             Statut = true,
                             Urgence = "3"
                         });
@@ -665,7 +751,7 @@ namespace StubbedContextLib.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("AthleteId")
+                    b.Property<int>("CoachId")
                         .HasColumnType("INTEGER");
 
                     b.Property<DateOnly>("Date")
@@ -687,7 +773,7 @@ namespace StubbedContextLib.Migrations
 
                     b.HasKey("IdTraining");
 
-                    b.HasIndex("AthleteId");
+                    b.HasIndex("CoachId");
 
                     b.ToTable("Training");
 
@@ -695,7 +781,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 1,
-                            AthleteId = 1,
+                            CoachId = 1,
                             Date = new DateOnly(2024, 1, 19),
                             Description = "Running",
                             FeedBack = "Good",
@@ -705,7 +791,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 2,
-                            AthleteId = 5,
+                            CoachId = 5,
                             Date = new DateOnly(2024, 2, 20),
                             Description = "Cycling",
                             Latitude = 48.8566f,
@@ -714,7 +800,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 3,
-                            AthleteId = 4,
+                            CoachId = 4,
                             Date = new DateOnly(2024, 2, 21),
                             FeedBack = "Good",
                             Latitude = 48.8566f,
@@ -723,7 +809,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 4,
-                            AthleteId = 3,
+                            CoachId = 3,
                             Date = new DateOnly(2024, 2, 22),
                             Description = "Running",
                             FeedBack = "Good",
@@ -733,7 +819,7 @@ namespace StubbedContextLib.Migrations
                         new
                         {
                             IdTraining = 5,
-                            AthleteId = 1,
+                            CoachId = 1,
                             Date = new DateOnly(2024, 2, 23),
                             Description = "Cycling",
                             Latitude = 48.8566f,
@@ -741,13 +827,41 @@ namespace StubbedContextLib.Migrations
                         });
                 });
 
+            modelBuilder.Entity("AthleteEntityNotificationEntity", b =>
+                {
+                    b.HasOne("Entities.NotificationEntity", null)
+                        .WithMany()
+                        .HasForeignKey("NotificationsReceivedIdNotif")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.AthleteEntity", null)
+                        .WithMany()
+                        .HasForeignKey("ReceiversIdAthlete")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("AthleteEntityTrainingEntity", b =>
+                {
+                    b.HasOne("Entities.AthleteEntity", null)
+                        .WithMany()
+                        .HasForeignKey("AthletesIdAthlete")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.TrainingEntity", null)
+                        .WithMany()
+                        .HasForeignKey("TrainingsAthleteIdTraining")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("Entities.ActivityEntity", b =>
                 {
                     b.HasOne("Entities.AthleteEntity", "Athlete")
                         .WithMany("Activities")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("AthleteId");
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
 
                     b.HasOne("Entities.DataSourceEntity", "DataSource")
                         .WithMany("Activities")
@@ -767,6 +881,25 @@ namespace StubbedContextLib.Migrations
                     b.Navigation("DataSource");
                 });
 
+            modelBuilder.Entity("Entities.FriendshipEntity", b =>
+                {
+                    b.HasOne("Entities.AthleteEntity", "Follower")
+                        .WithMany("Followers")
+                        .HasForeignKey("FollowerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Entities.AthleteEntity", "Following")
+                        .WithMany("Followings")
+                        .HasForeignKey("FollowingId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Follower");
+
+                    b.Navigation("Following");
+                });
+
             modelBuilder.Entity("Entities.HeartRateEntity", b =>
                 {
                     b.HasOne("Entities.ActivityEntity", "Activity")
@@ -780,35 +913,33 @@ namespace StubbedContextLib.Migrations
 
             modelBuilder.Entity("Entities.NotificationEntity", b =>
                 {
-                    b.HasOne("Entities.AthleteEntity", "Athlete")
+                    b.HasOne("Entities.AthleteEntity", "Sender")
-                        .WithMany("Notifications")
+                        .WithMany("NotificationsSent")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("SenderId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.Navigation("Athlete");
+                    b.Navigation("Sender");
                 });
 
             modelBuilder.Entity("Entities.StatisticEntity", b =>
                 {
                     b.HasOne("Entities.AthleteEntity", "Athlete")
                         .WithMany("Statistics")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("AthleteId");
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
 
                     b.Navigation("Athlete");
                 });
 
             modelBuilder.Entity("Entities.TrainingEntity", b =>
                 {
-                    b.HasOne("Entities.AthleteEntity", "Athlete")
+                    b.HasOne("Entities.AthleteEntity", "Coach")
-                        .WithMany("Trainings")
+                        .WithMany("TrainingsCoach")
-                        .HasForeignKey("AthleteId")
+                        .HasForeignKey("CoachId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.Navigation("Athlete");
+                    b.Navigation("Coach");
                 });
 
             modelBuilder.Entity("Entities.ActivityEntity", b =>
@@ -820,11 +951,15 @@ namespace StubbedContextLib.Migrations
                 {
                     b.Navigation("Activities");
 
-                    b.Navigation("Notifications");
+                    b.Navigation("Followers");
+
+                    b.Navigation("Followings");
+
+                    b.Navigation("NotificationsSent");
 
                     b.Navigation("Statistics");
 
-                    b.Navigation("Trainings");
+                    b.Navigation("TrainingsCoach");
                 });
 
             modelBuilder.Entity("Entities.DataSourceEntity", b =>

src/StubbedContextLib/NotificationStubbedContext.cs

@@ -37,11 +37,11 @@ namespace StubbedContextLib
             base.OnModelCreating(modelBuilder);
 
             modelBuilder.Entity<NotificationEntity>().HasData(
-                new NotificationEntity { IdNotif = 1, Message = "You have a new activity to check", Date = new DateTime(2023, 12, 25, 13, 00, 40), Statut = true, Urgence = "A", AthleteId = 1 },
+                new NotificationEntity { IdNotif = 1, Message = "You have a new activity to check", Date = new DateTime(2023, 12, 25, 13, 00, 40), Statut = true, Urgence = "A", SenderId = 1 },
-                new NotificationEntity { IdNotif = 2, Message = "You have a new athlete to check", Date = new DateTime(2023, 12, 26, 13, 10, 40), Statut = false, Urgence = "3", AthleteId = 2 },
+                new NotificationEntity { IdNotif = 2, Message = "You have a new athlete to check", Date = new DateTime(2023, 12, 26, 13, 10, 40), Statut = false, Urgence = "3", SenderId = 2 },
-                new NotificationEntity { IdNotif = 3, Message = "You have a new heart rate to check", Date = new DateTime(2023, 12, 26, 16, 10, 04), Statut = true, Urgence = "2", AthleteId = 3 },
+                new NotificationEntity { IdNotif = 3, Message = "You have a new heart rate to check", Date = new DateTime(2023, 12, 26, 16, 10, 04), Statut = true, Urgence = "2", SenderId = 3 },
-                new NotificationEntity { IdNotif = 4, Message = "You have a new data source to check", Date = new DateTime(2024, 01, 12, 09, 30, 50), Statut = false, Urgence = "1", AthleteId = 4 },
+                new NotificationEntity { IdNotif = 4, Message = "You have a new data source to check", Date = new DateTime(2024, 01, 12, 09, 30, 50), Statut = false, Urgence = "1", SenderId = 4 },
-                new NotificationEntity { IdNotif = 5, Message = "You have a new notification to check", Date = new DateTime(2024, 02, 22, 12, 10, 00), Statut = true, Urgence = "3", AthleteId = 5 }
+                new NotificationEntity { IdNotif = 5, Message = "You have a new notification to check", Date = new DateTime(2024, 02, 22, 12, 10, 00), Statut = true, Urgence = "3", SenderId = 5 }
             );
         }
     }

src/StubbedContextLib/TrainingStubbedContext.cs

@@ -37,11 +37,11 @@ namespace StubbedContextLib
             base.OnModelCreating(modelBuilder);
 
             modelBuilder.Entity<TrainingEntity>().HasData(
-                new TrainingEntity { IdTraining = 1, Date = new DateOnly(2024, 01, 19), Description = "Running", Latitude = 48.8566f, Longitude = 2.3522f, FeedBack = "Good", AthleteId = 1 },
+                new TrainingEntity { IdTraining = 1, Date = new DateOnly(2024, 01, 19), Description = "Running", Latitude = 48.8566f, Longitude = 2.3522f, FeedBack = "Good", CoachId = 1 },
-                new TrainingEntity { IdTraining = 2, Date = new DateOnly(2024, 02, 20), Description = "Cycling", Latitude = 48.8566f, Longitude = 2.3522f, AthleteId = 5 },
+                new TrainingEntity { IdTraining = 2, Date = new DateOnly(2024, 02, 20), Description = "Cycling", Latitude = 48.8566f, Longitude = 2.3522f, CoachId = 5 },
-                new TrainingEntity { IdTraining = 3, Date = new DateOnly(2024, 02, 21), Latitude = 48.8566f, Longitude = 2.3522f, FeedBack = "Good", AthleteId = 4 },
+                new TrainingEntity { IdTraining = 3, Date = new DateOnly(2024, 02, 21), Latitude = 48.8566f, Longitude = 2.3522f, FeedBack = "Good", CoachId = 4 },
-                new TrainingEntity { IdTraining = 4, Date = new DateOnly(2024, 02, 22), Description = "Running", Latitude = 48.8566f, Longitude = 2.3522f, FeedBack = "Good", AthleteId = 3 },
+                new TrainingEntity { IdTraining = 4, Date = new DateOnly(2024, 02, 22), Description = "Running", Latitude = 48.8566f, Longitude = 2.3522f, FeedBack = "Good", CoachId = 3 },
-                new TrainingEntity { IdTraining = 5, Date = new DateOnly(2024, 02, 23), Description = "Cycling", Latitude = 48.8566f, Longitude = 2.3522f, AthleteId = 1 }
+                new TrainingEntity { IdTraining = 5, Date = new DateOnly(2024, 02, 23), Description = "Cycling", Latitude = 48.8566f, Longitude = 2.3522f, CoachId = 1 }
             );
         }
     }

src/Tests/ConsoleTestRelationships/Program.cs

@@ -16,6 +16,8 @@ class Program
                 DataSourceTests(db);
 
                 AthleteTests(db);
+
+                FriendshipTests(db);
             }
         }
         catch (Exception ex)
@@ -34,12 +36,12 @@ class Program
         {
             Console.WriteLine($"\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
 
-            Console.WriteLine("\tFréquences cardiaques :");
+            Console.WriteLine("\t\tFréquences cardiaques :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var heartRate in activity.HeartRates)
             {
-                Console.WriteLine($"\t\t{heartRate.IdHeartRate} - {heartRate.Altitude}, {heartRate.Time}, {heartRate.Temperature}, {heartRate.Bpm}, {heartRate.Longitude}, {heartRate.Latitude}");
+                Console.WriteLine($"\t\t\t{heartRate.IdHeartRate} - {heartRate.Altitude}, {heartRate.Time}, {heartRate.Temperature}, {heartRate.Bpm}, {heartRate.Longitude}, {heartRate.Latitude}");
             }
         }
 
@@ -52,12 +54,12 @@ class Program
         {
             Console.WriteLine($"\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
 
-            Console.WriteLine("\tFréquences cardiaques :");
+            Console.WriteLine("\t\tFréquences cardiaques :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var heartRate in activity.HeartRates)
             {
-                Console.WriteLine($"\t\t{heartRate.IdHeartRate} - {heartRate.Altitude}, {heartRate.Time}, {heartRate.Temperature}, {heartRate.Bpm}, {heartRate.Longitude}, {heartRate.Latitude}");
+                Console.WriteLine($"\t\t\t{heartRate.IdHeartRate} - {heartRate.Altitude}, {heartRate.Time}, {heartRate.Temperature}, {heartRate.Bpm}, {heartRate.Longitude}, {heartRate.Latitude}");
             }
         }
     }
@@ -69,24 +71,24 @@ class Program
         Console.WriteLine("Sources de données :");
         Console.WriteLine("---------------------------------");
 
-        foreach (var dataSource in db.DataSourcesSet.Include(ds => ds.Activities))
+        foreach (var dataSource in db.DataSourcesSet.Include(ds => ds.Activities).Include(ds => ds.Athletes))
         {
             Console.WriteLine($"\t{dataSource.IdSource} - {dataSource.Model}");
 
-            Console.WriteLine("\tActivités :");
+            Console.WriteLine("\t\tActivités :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var activity in dataSource.Activities)
             {
-                Console.WriteLine($"\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
+                Console.WriteLine($"\t\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
             }
 
-            Console.WriteLine("\tAthletes :");
+            Console.WriteLine("\t\tAthletes :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var athlete in dataSource.Athletes)
             {
-                Console.WriteLine($"\t\t{athlete.IdAthlete} - {athlete.FirstName}, {athlete.LastName}, {athlete.DateOfBirth}, {athlete.Sexe}, {athlete.Weight}, {athlete.IsCoach}");
+                Console.WriteLine($"\t\t\t{athlete.IdAthlete} - {athlete.FirstName}, {athlete.LastName}, {athlete.DateOfBirth}, {athlete.Sexe}, {athlete.Weight}, {athlete.IsCoach}");
             }
         }
 
@@ -95,24 +97,24 @@ class Program
         Console.WriteLine("Accès à la source de données d'id '2' :");
         Console.WriteLine("---------------------------------");
 
-        foreach (var dataSource in db.DataSourcesSet.Where(ds => ds.IdSource == 2).Include(ds => ds.Activities))
+        foreach (var dataSource in db.DataSourcesSet.Where(ds => ds.IdSource == 2).Include(ds => ds.Activities).Include(ds => ds.Athletes))
         {
             Console.WriteLine($"\t{dataSource.IdSource} - {dataSource.Model}");
 
-            Console.WriteLine("\tActivités :");
+            Console.WriteLine("\t\tActivités :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var activity in dataSource.Activities)
             {
-                Console.WriteLine($"\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
+                Console.WriteLine($"\t\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
             }
 
-            Console.WriteLine("\tAthletes :");
+            Console.WriteLine("\t\tAthletes :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var athlete in dataSource.Athletes)
             {
-                Console.WriteLine($"\t\t{athlete.IdAthlete} - {athlete.FirstName}, {athlete.LastName}, {athlete.DateOfBirth}, {athlete.Sexe}, {athlete.Weight}, {athlete.IsCoach}");
+                Console.WriteLine($"\t\t\t{athlete.IdAthlete} - {athlete.FirstName}, {athlete.LastName}, {athlete.DateOfBirth}, {athlete.Sexe}, {athlete.Weight}, {athlete.IsCoach}");
             }
         }
 
@@ -126,48 +128,62 @@ class Program
         Console.WriteLine("Athlètes :");
         Console.WriteLine("---------------------------------");
 
-        // ! Pas oublier de faire tous les includes necessaire !
+        foreach (var athlete in db.AthletesSet.Include(a => a.Statistics).Include(a => a.Activities).Include(a => a.TrainingsAthlete).Include(a => a.NotificationsSent).Include(a => a.DataSource).Include(a => a.TrainingsCoach).Include(a => a.NotificationsReceived))
-        // ? Mais comment ?
-        foreach (var athlete in db.AthletesSet.Include(a => a.Statistics))
         {
             Console.WriteLine($"\t{athlete.IdAthlete} - {athlete.FirstName}, {athlete.LastName}, {athlete.DateOfBirth}, {athlete.Sexe}, {athlete.Weight}, {athlete.IsCoach}");
 
-            Console.WriteLine("\tStatistiques :");
+            Console.WriteLine("\t\tStatistiques :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var statistic in athlete.Statistics)
             {
-                Console.WriteLine($"\t\t{statistic.IdStatistic} - {statistic.Date}, {statistic.AverageCaloriesBurned}, {statistic.AverageHeartRate}, {statistic.MaximumHeartRate}");
+                Console.WriteLine($"\t\t\t{statistic.IdStatistic} - {statistic.Date}, {statistic.AverageCaloriesBurned}, {statistic.AverageHeartRate}, {statistic.MaximumHeartRate}");
             }
 
-            Console.WriteLine("\tActivités :");
+            Console.WriteLine("\t\tActivités :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var activity in athlete.Activities)
             {
-                Console.WriteLine($"\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
+                Console.WriteLine($"\t\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
+            }
+
+            Console.WriteLine("\t\tEntraînements :");
+            Console.WriteLine("\t\t---------------------------------");
+
+            foreach (var training in athlete.TrainingsAthlete)
+            {
+                Console.WriteLine($"\t\t\t{training.IdTraining} - {training.Date}, {training.Latitude}, {training.Longitude}, {training.Description}, {training.FeedBack}");
+            }
+
+            Console.WriteLine("\t\tEntrainements données :");
+            Console.WriteLine("\t\t---------------------------------");
+
+            foreach (var training in athlete.TrainingsCoach)
+            {
+                Console.WriteLine($"\t\t\t{training.IdTraining} - {training.Date}, {training.Latitude}, {training.Longitude}, {training.Description}, {training.FeedBack}");
             }
 
-            Console.WriteLine("\tEntraînements :");
+            Console.WriteLine("\t\tNotifications reçus :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
-            foreach (var training in athlete.Trainings)
+            foreach (var notification in athlete.NotificationsReceived)
             {
-                Console.WriteLine($"\t\t{training.IdTraining} - {training.Date}, {training.Latitude}, {training.Longitude}, {training.Description}, {training.FeedBack}");
+                Console.WriteLine($"\t\t\t{notification.IdNotif} - {notification.Date}, {notification.Statut}, {notification.Message}");
             }
 
-            Console.WriteLine("\tNotifications :");
+            Console.WriteLine("\t\tNotifications données :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
-            foreach (var notification in athlete.Notifications)
+            foreach (var notification in athlete.NotificationsSent)
             {
-                Console.WriteLine($"\t\t{notification.IdNotif} - {notification.Date}, {notification.Statut}, {notification.Message}");
+                Console.WriteLine($"\t\t\t{notification.IdNotif} - {notification.Date}, {notification.Statut}, {notification.Message}");
             }
 
-            Console.WriteLine("\tSources de données :");
+            Console.WriteLine("\t\tSources de données :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
-            Console.WriteLine("\t\t" + (athlete.DataSource?.Model ?? "Aucune source de données"));
+            Console.WriteLine("\t\t\t" + (athlete.DataSource?.Model ?? "Aucune source de données"));
         }
 
         Console.WriteLine("---------------------------------\n");
@@ -175,49 +191,117 @@ class Program
         Console.WriteLine("Accès à l'athlète d'id '2' :");
         Console.WriteLine("---------------------------------");
 
-        foreach (var athlete in db.AthletesSet.Where(a => a.IdAthlete == 2).Include(a => a.Statistics))
+        foreach (var athlete in db.AthletesSet.Where(a => a.IdAthlete == 2).Include(a => a.Statistics).Include(a => a.Activities).Include(a => a.TrainingsAthlete).Include(a => a.NotificationsSent).Include(a => a.DataSource).Include(a => a.TrainingsCoach).Include(a => a.NotificationsReceived))
         {
             Console.WriteLine($"\t{athlete.IdAthlete} - {athlete.FirstName}, {athlete.LastName}, {athlete.DateOfBirth}, {athlete.Sexe}, {athlete.Weight}, {athlete.IsCoach}");
 
-            Console.WriteLine("\tStatistiques :");
+            Console.WriteLine("\t\tStatistiques :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var statistic in athlete.Statistics)
             {
-                Console.WriteLine($"\t\t{statistic.IdStatistic} - {statistic.Date}, {statistic.AverageCaloriesBurned}, {statistic.AverageHeartRate}, {statistic.MaximumHeartRate}");
+                Console.WriteLine($"\t\t\t{statistic.IdStatistic} - {statistic.Date}, {statistic.AverageCaloriesBurned}, {statistic.AverageHeartRate}, {statistic.MaximumHeartRate}");
             }
 
-            Console.WriteLine("\tActivités :");
+            Console.WriteLine("\t\tActivités :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
             foreach (var activity in athlete.Activities)
             {
-                Console.WriteLine($"\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
+                Console.WriteLine($"\t\t\t{activity.IdActivity} - {activity.Type}, {activity.Date}, {activity.StartTime}, {activity.EndTime}, {activity.EffortFelt}, {activity.Variability}, {activity.Variance}, {activity.StandardDeviation}, {activity.Average}, {activity.Maximum}, {activity.Minimum}, {activity.AverageTemperature}, {activity.HasAutoPause}");
             }
 
-            Console.WriteLine("\tEntraînements :");
+            Console.WriteLine("\t\tEntraînements :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
-            foreach (var training in athlete.Trainings)
+            foreach (var training in athlete.TrainingsAthlete)
             {
-                Console.WriteLine($"\t\t{training.IdTraining} - {training.Date}, {training.Latitude}, {training.Longitude}, {training.Description}, {training.FeedBack}");
+                Console.WriteLine($"\t\t\t{training.IdTraining} - {training.Date}, {training.Latitude}, {training.Longitude}, {training.Description}, {training.FeedBack}");
             }
 
-            Console.WriteLine("\tNotifications :");
+            Console.WriteLine("\t\tEntrainements données :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
-            foreach (var notification in athlete.Notifications)
+            foreach (var training in athlete.TrainingsCoach)
             {
-                Console.WriteLine($"\t\t{notification.IdNotif} - {notification.Date}, {notification.Statut}, {notification.Message}");
+                Console.WriteLine($"\t\t\t{training.IdTraining} - {training.Date}, {training.Latitude}, {training.Longitude}, {training.Description}, {training.FeedBack}");
             }
 
-            Console.WriteLine("\tSources de données :");
+            Console.WriteLine("\t\tNotifications reçus :");
-            Console.WriteLine("\t---------------------------------");
+            Console.WriteLine("\t\t---------------------------------");
 
-            Console.WriteLine("\t\t" + (athlete.DataSource?.Model ?? "Aucune source de données"));
+            foreach (var notification in athlete.NotificationsReceived)
+            {
+                Console.WriteLine($"\t\t\t{notification.IdNotif} - {notification.Date}, {notification.Statut}, {notification.Message}");
+            }
+
+            Console.WriteLine("\t\tNotifications données :");
+            Console.WriteLine("\t\t---------------------------------");
+
+            foreach (var notification in athlete.NotificationsSent)
+            {
+                Console.WriteLine($"\t\t\t{notification.IdNotif} - {notification.Date}, {notification.Statut}, {notification.Message}");
+            }
+            
+            Console.WriteLine("\t\tSources de données :");
+            Console.WriteLine("\t\t---------------------------------");
+
+            Console.WriteLine("\t\t\t" + (athlete.DataSource?.Model ?? "Aucune source de données"));
         }
 
         Console.WriteLine("---------------------------------\n");
     }
 
+    static void FriendshipTests(LibraryContext db) 
+    {
+        Console.WriteLine("Accès à toutes les amitiés :");
+
+        Console.WriteLine("Amitiés :");
+        Console.WriteLine("---------------------------------");
+
+        foreach (var athlete in db.AthletesSet.Include(f => f.Followers).Include(f => f.Followings))
+        {
+            Console.WriteLine($"\t{athlete.IdAthlete} - {athlete.FirstName}, {athlete.LastName}, {athlete.DateOfBirth}, {athlete.Sexe}, {athlete.Weight}, {athlete.IsCoach}");
+
+            Console.WriteLine($"");
+            Console.WriteLine($"");
+            
+            Console.WriteLine($"\t\t{athlete.Followers.Aggregate("", (seed, kvp) => $"{seed} [{kvp.FollowerId} ; {kvp.FollowingId} ; {kvp.StartDate.ToString("dd/MM/yyyy hh:mm:ss")}]")}");
+
+            // Console.WriteLine("\t\tFollowers :");
+            // Console.WriteLine("\t\t---------------------------------");
+
+            // foreach (var followers in athlete.Followers)
+            // {
+            //     Console.WriteLine($"\t\t\t{followers.IdAthlete} - {followers.FirstName}, {followers.LastName}, {followers.DateOfBirth}, {followers.Sexe}, {followers.Weight}, {followers.IsCoach}");
+            // }
+
+            // Console.WriteLine("\t\tFollowings :");
+            // Console.WriteLine("\t\t---------------------------------");
+
+            // foreach (var following in athlete.Followings)
+            // {
+            //     // Console.WriteLine($"\t\t{following.Followings.Aggregate("", (seed, kvp) => $"{seed} [{kvp.ArtistEntityId} ; {kvp.CreatedOn.ToString("dd/MM/yyyy hh:mm:ss")}]")}");
+            //     Console.WriteLine($"\t\t\t{following.IdAthlete} - {following.FirstName}, {following.LastName}, {following.DateOfBirth}, {following.Sexe}, {following.Weight}, {following.IsCoach}");
+            // }
+
+            // using (MyDbContext db = new MyDbContext())
+            // {
+            //     WriteLine("Content of database (albums) : ");
+            //     foreach (var al in db.Albums.Include(a => a.Artists))
+            //     {
+            //         WriteLine($"\t{al}");
+            //         WriteLine($"\t\t{al.AlbumArtists.Aggregate("", (seed, kvp) => $"{seed} [{kvp.ArtistEntityId} ; {kvp.CreatedOn.ToString("dd/MM/yyyy hh:mm:ss")}]")}");
+            //     }
+
+            //     WriteLine("Content of database (artists) : ");
+            //     foreach (var ar in db.Artists)
+            //     {
+            //         WriteLine($"\t{ar}");
+            //         WriteLine($"\t\t{ar.ArtistAlbums.Aggregate("", (seed, kvp) => $"{seed} [{kvp.AlbumEntityId} ; {kvp.CreatedOn.ToString("dd/MM/yyyy hh:mm:ss")}]")}");
+            //     }
+            // }
+        }
+    }
+
 }