Add relationships feature and EF migration

src/API/Controllers/Avatar/V1/AvatarController.cs

@@ -3,6 +3,7 @@ using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using RecNet.Application.Common.Security;
 using RecNet.Application.Profiles;
+using RecNet.Application.Profiles.Avatar;
 using AvatarEntity = RecNet.Domain.Profiles.Avatar;
 
 namespace API.Controllers.Avatar.V1;

src/API/Controllers/Profiles/V1/ProfilesController.cs

@@ -1,6 +1,7 @@
 using API.Contracts.Profiles.Responses;
 using Microsoft.AspNetCore.Mvc;
 using RecNet.Application.Profiles;
+using RecNet.Application.Profiles.Login;
 using LoginRequest = API.Contracts.Profiles.Requests.LoginRequest;
 
 namespace API.Controllers.Profiles.V1;

src/API/Controllers/Relationships/V1/RelationshipsController.cs

@@ -0,0 +1,38 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using RecNet.Application.Common.Security;
+using RecNet.Application.Profiles;
+using RecNet.Application.Profiles.Relationships;
+
+namespace API.Controllers.Relationships.V1;
+
+[Authorize]
+[ApiController]
+[Route("api/[controller]/v1")]
+public class RelationshipsController(IRelationshipService relationshipService) : ControllerBase
+{
+    [HttpGet("get")]
+    public async Task<IReadOnlyList<RelationshipDTO>> GetRelationships(CancellationToken ct)
+    {
+        var profileId = User.GetProfileId();
+
+        return await relationshipService.GetRelationshipsAsync(profileId, ct);
+    }
+
+    [HttpPost("update")]
+    public async Task<ActionResult<RelationshipDTO>> UpdateRelationship(
+        [FromBody] RelationshipDTO request,
+        CancellationToken ct)
+    {
+        var profileId = User.GetProfileId();
+
+        return Ok(
+            await relationshipService.UpdateRelationshipAsync
+            (
+                profileId: profileId,
+                command: new UpdateRelationshipCommand(request.ProfileId, request.Muted, request.Ignored),
+                ct: ct
+            )
+        );
+    }
+}

src/API/Controllers/Settings/V1/SettingsController.cs

@@ -2,6 +2,7 @@
 using Microsoft.AspNetCore.Mvc;
 using RecNet.Application.Common.Security;
 using RecNet.Application.Profiles;
+using RecNet.Application.Profiles.Settings;
 
 namespace API.Controllers.Settings.V1;
 

src/RecNet.Application/Common/Mapping/ApplicationMappingProfile.cs

@@ -1,5 +1,8 @@
 using AutoMapper;
 using RecNet.Application.Profiles;
+using RecNet.Application.Profiles.Avatar;
+using RecNet.Application.Profiles.Relationships;
+using RecNet.Application.Profiles.Settings;
 
 namespace RecNet.Application.Common.Mapping;
 
@@ -9,6 +12,7 @@ public class ApplicationMappingProfile : Profile
     {
         CreateMap<Domain.Profiles.Profile, ProfileDTO>();
         CreateMap<Domain.Profiles.Avatar, AvatarDTO>();
+        CreateMap<Domain.Profiles.Relationship, RelationshipDTO>();
         CreateMap<Domain.Profiles.PlayerSetting, PlayerSettingDTO>();
     }
 }

src/RecNet.Application/DependencyInjection.cs

@@ -1,6 +1,8 @@
 using Microsoft.Extensions.DependencyInjection;
 using RecNet.Application.Neutrino;
 using RecNet.Application.Profiles;
+using RecNet.Application.Profiles.Login;
+using RecNet.Application.Profiles.Relationships;
 
 namespace RecNet.Application;
 
@@ -13,6 +15,7 @@ public static class DependencyInjection
         services.AddScoped<NameGenerator>();
         
         services.AddScoped<IProfileService, ProfileService>();
+        services.AddScoped<IRelationshipService, RelationshipService>();
         services.AddScoped<INeutrinoAuthorizationService, NeutrinoAuthorizationService>();
 
         return services;

src/RecNet.Application/Profiles/Avatar/AvatarDto.cs

@@ -1,6 +1,6 @@
 using System.Text.Json.Serialization;
 
-namespace RecNet.Application.Profiles;
+namespace RecNet.Application.Profiles.Avatar;
 
 public class AvatarDTO
 {

src/RecNet.Application/Profiles/Avatar/UpdateAvatarCommand.cs

@@ -1,4 +1,4 @@
-namespace RecNet.Application.Profiles;
+namespace RecNet.Application.Profiles.Avatar;
 
 public sealed record UpdateAvatarCommand(
     string? OutfitSelections,

src/RecNet.Application/Profiles/IProfileService.cs

@@ -1,4 +1,8 @@
 
+using RecNet.Application.Profiles.Avatar;
+using RecNet.Application.Profiles.Login;
+using RecNet.Application.Profiles.Settings;
+
 namespace RecNet.Application.Profiles;
 
 public interface IProfileService

src/RecNet.Application/Profiles/Login/LoginProfileCommand.cs

@@ -1,6 +1,6 @@
 using RecNet.Domain.Common;
 
-namespace RecNet.Application.Profiles;
+namespace RecNet.Application.Profiles.Login;
 
 public sealed record LoginProfileCommand(
     string AppVersion,

src/RecNet.Application/Profiles/Login/LoginProfileResult.cs

@@ -1,4 +1,4 @@
-namespace RecNet.Application.Profiles;
+namespace RecNet.Application.Profiles.Login;
 
 
 

src/RecNet.Application/Profiles/Login/NameGenerator.cs

@@ -1,7 +1,7 @@
 using RecNet.Application.Common.Interfaces;
 using RecNet.Domain.Profiles.Names;
 
-namespace RecNet.Application.Profiles;
+namespace RecNet.Application.Profiles.Login;
 
 public class NameGenerator(IConfigService configService)
 {

src/RecNet.Application/Profiles/ProfileService.cs

@@ -1,10 +1,14 @@
 using AutoMapper;
 using RecNet.Application.Common.Interfaces;
 using RecNet.Application.Common.Security;
+using RecNet.Application.Profiles.Avatar;
+using RecNet.Application.Profiles.Login;
+using RecNet.Application.Profiles.Settings;
 using RecNet.Domain.Common;
 using RecNet.Domain.GameVersions;
 using RecNet.Domain.Profiles;
 using ProfileEntity = RecNet.Domain.Profiles.Profile;
+using AvatarEntity = RecNet.Domain.Profiles.Avatar;
 
 namespace RecNet.Application.Profiles;
 
@@ -45,7 +49,7 @@ public class ProfileService(
             return null;
 
         profile.SetAvatar(
-            Avatar.Create(
+            AvatarEntity.Create(
                 command.OutfitSelections,
                 command.SkinColor,
                 command.HairColor

src/RecNet.Application/Profiles/Relationships/IRelationshipService.cs

@@ -0,0 +1,7 @@
+namespace RecNet.Application.Profiles.Relationships;
+
+public interface IRelationshipService
+{
+    Task<IReadOnlyList<RelationshipDTO>> GetRelationshipsAsync(Guid profileId, CancellationToken ct = default);
+    Task<RelationshipDTO> UpdateRelationshipAsync(Guid profileId, UpdateRelationshipCommand command, CancellationToken ct = default);
+}

src/RecNet.Application/Profiles/Relationships/RelationshipDto.cs

@@ -0,0 +1,15 @@
+using System.Text.Json.Serialization;
+
+namespace RecNet.Application.Profiles.Relationships;
+
+public class RelationshipDTO
+{
+    [JsonPropertyName("ProfileId")]
+    public Guid ProfileId { get; set; }
+
+    [JsonPropertyName("Muted")]
+    public bool Muted { get; set; }
+
+    [JsonPropertyName("Ignored")]
+    public bool Ignored { get; set; }
+}

src/RecNet.Application/Profiles/Relationships/RelationshipService.cs

@@ -0,0 +1,33 @@
+using AutoMapper;
+using RecNet.Domain.Profiles;
+
+namespace RecNet.Application.Profiles.Relationships;
+
+public class RelationshipService(IRelationshipRepository repository, IMapper mapper) : IRelationshipService
+{
+    public async Task<IReadOnlyList<RelationshipDTO>> GetRelationshipsAsync(
+        Guid profileId, 
+        CancellationToken ct = default)
+    {
+        var relationships = await repository.GetAllOwnedRelationships(profileId, ct);
+        
+        return mapper.Map<List<RelationshipDTO>>(relationships);
+    }
+
+    public async Task<RelationshipDTO> UpdateRelationshipAsync(Guid profileId, UpdateRelationshipCommand command, CancellationToken ct = default)
+    {
+        var relationship = await repository.GetAsync(profileId, command.ProfileId, ct);
+        if (relationship == null)
+        {
+
+            relationship = Relationship.Create(profileId, command.ProfileId);
+            await repository.AddAsync(relationship, ct);
+        }
+        
+        relationship.Mutate(command.Muted, command.Ignored);
+
+        await repository.SaveChangesAsync(ct);
+        
+        return mapper.Map<RelationshipDTO>(relationship);
+    }
+}

src/RecNet.Application/Profiles/Relationships/UpdateRelationshipCommand.cs

@@ -0,0 +1,6 @@
+namespace RecNet.Application.Profiles.Relationships;
+
+public record UpdateRelationshipCommand(
+    Guid ProfileId,
+    bool Muted,
+    bool Ignored);

src/RecNet.Application/Profiles/Settings/PlayerSettingDto.cs

@@ -1,6 +1,6 @@
 using System.Text.Json.Serialization;
 
-namespace RecNet.Application.Profiles;
+namespace RecNet.Application.Profiles.Settings;
 
 public class PlayerSettingDTO
 {

src/RecNet.Application/Profiles/Settings/UpdatePlayerSettingCommand.cs

@@ -1,4 +1,4 @@
-namespace RecNet.Application.Profiles;
+namespace RecNet.Application.Profiles.Settings;
 
 public sealed record UpdatePlayerSettingCommand(
     string Key,

src/RecNet.Domain/Profiles/IRelationshipRepository.cs

@@ -0,0 +1,10 @@
+namespace RecNet.Domain.Profiles;
+
+public interface IRelationshipRepository
+{
+    Task<Relationship?> GetAsync(Guid ownerId, Guid profileId, CancellationToken ct = default);
+    Task<IReadOnlyList<Relationship>> GetAllOwnedRelationships(Guid ownerId, CancellationToken ct = default);
+
+    Task AddAsync(Relationship relationship, CancellationToken ct = default);
+    Task SaveChangesAsync(CancellationToken ct = default);
+}

src/RecNet.Domain/Profiles/Profile.cs

@@ -39,6 +39,7 @@ public class Profile
 
     public Avatar Avatar { get; private set; } = Avatar.Empty;
     public ICollection<PlayerSetting> Settings { get; } = [];
+    public ICollection<Relationship> Relationships { get; } = [];
 
     public static Profile Create(
         string name, 

src/RecNet.Domain/Profiles/Relationship.cs

@@ -0,0 +1,35 @@
+using RecNet.Domain.Exceptions;
+
+namespace RecNet.Domain.Profiles;
+
+public class Relationship
+{
+    public Guid OwnerProfileId { get; private set; }
+    
+    public Guid ProfileId { get; private set; }
+
+    public bool Muted { get; private set; }
+    public bool Ignored { get; private set; }
+
+    private Relationship()
+    {
+    }
+
+    public static Relationship Create(Guid ownerProfileId, Guid profileId)
+    {
+        if (ownerProfileId == Guid.Empty || profileId == Guid.Empty)
+            throw new DomainException("Profile IDs cannot be null.");
+
+        return new Relationship
+        {
+            OwnerProfileId = ownerProfileId,
+            ProfileId = profileId
+        };
+    }
+
+    public void Mutate(bool muted, bool ignored)
+    {
+        Muted = muted;
+        Ignored = ignored;
+    }
+}

src/RecNet.Infrastructure/DependencyInjection.cs

@@ -40,6 +40,7 @@ public static class DependencyInjection
         
         builder.Services.AddScoped<IGameVersionRepository, GameVersionRepository>();
         builder.Services.AddScoped<IProfileRepository, ProfileRepository>();
+        builder.Services.AddScoped<IRelationshipRepository, RelationshipRepository>();
         builder.Services.AddScoped<IServerConfigRepository, ServerConfigRepository>();
         
         builder.Services.AddScoped<IConfigService, ConfigService>();

src/RecNet.Infrastructure/Persistence/Configurations/ProfileConfiguration.cs

@@ -36,6 +36,13 @@ public class ProfileConfiguration : IEntityTypeConfiguration<Profile>
         builder.Navigation(x => x.Settings)
             .UsePropertyAccessMode(PropertyAccessMode.Field);
         
+        builder.HasMany(x => x.Relationships)
+            .WithOne()
+            .HasForeignKey(x => x.OwnerProfileId);
+
+        builder.Navigation(x => x.Relationships)
+            .UsePropertyAccessMode(PropertyAccessMode.Field);
+
         builder.OwnsOne(x => x.Avatar);
         
         builder.HasIndex(x => new { x.Platform, x.PlatformId })

src/RecNet.Infrastructure/Persistence/Configurations/RelationshipConfiguration.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using RecNet.Domain.Profiles;
+
+namespace RecNet.Infrastructure.Persistence.Configurations;
+
+public class RelationshipConfiguration : IEntityTypeConfiguration<Relationship>
+{
+    public void Configure(EntityTypeBuilder<Relationship> builder)
+    {
+        builder.HasKey(x => new { x.OwnerProfileId, x.ProfileId });
+        
+        builder.Property(x => x.OwnerProfileId)
+            .IsRequired();
+        
+        builder.Property(x => x.ProfileId)
+            .IsRequired();
+
+        builder.HasOne<Profile>()
+            .WithMany()
+            .HasForeignKey(x => x.ProfileId)
+            .OnDelete(DeleteBehavior.Cascade)
+            .IsRequired();
+    }
+}

src/RecNet.Infrastructure/Persistence/DatabaseContext.cs

@@ -9,6 +9,7 @@ public class DatabaseContext(DbContextOptions<DatabaseContext> options) : DbCont
 {
     public DbSet<Profile> Profiles => Set<Profile>();
     public DbSet<PlayerSetting> PlayerSettings => Set<PlayerSetting>();
+    public DbSet<Relationship> Relationships => Set<Relationship>();
     public DbSet<GameVersion> GameVersions => Set<GameVersion>();
     public DbSet<ServerConfig> ServerConfigs => Set<ServerConfig>();
 

src/RecNet.Infrastructure/Persistence/Migrations/20260626215037_Relationships.Designer.cs

@@ -0,0 +1,209 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using RecNet.Infrastructure.Persistence;
+
+#nullable disable
+
+namespace RecNet.Infrastructure.Persistence.Migrations
+{
+    [DbContext(typeof(DatabaseContext))]
+    [Migration("20260626215037_Relationships")]
+    partial class Relationships
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.8")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("RecNet.Domain.Configuration.ServerConfig", b =>
+                {
+                    b.Property<string>("Key")
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("jsonb");
+
+                    b.HasKey("Key");
+
+                    b.ToTable("ServerConfigs");
+                });
+
+            modelBuilder.Entity("RecNet.Domain.GameVersions.GameVersion", b =>
+                {
+                    b.Property<string>("Version")
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<bool>("IsValid")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("Version");
+
+                    b.ToTable("GameVersions");
+                });
+
+            modelBuilder.Entity("RecNet.Domain.Profiles.PlayerSetting", b =>
+                {
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Key")
+                        .HasMaxLength(100)
+                        .HasColumnType("character varying(100)");
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("UserId", "Key");
+
+                    b.ToTable("PlayerSettings");
+                });
+
+            modelBuilder.Entity("RecNet.Domain.Profiles.Profile", b =>
+                {
+                    b.Property<Guid>("ProfileId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTimeOffset>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.PrimitiveCollection<string>("DeviceIds")
+                        .IsRequired()
+                        .HasColumnType("jsonb");
+
+                    b.Property<bool>("IsBanned")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsDeveloper")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsModerator")
+                        .HasColumnType("boolean");
+
+                    b.Property<byte[]>("MetaAuthenticationSecret")
+                        .IsRequired()
+                        .HasColumnType("bytea");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("Platform")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)");
+
+                    b.Property<string>("PlatformId")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("character varying(50)");
+
+                    b.HasKey("ProfileId");
+
+                    b.HasIndex("Platform", "PlatformId")
+                        .IsUnique();
+
+                    b.ToTable("Profiles");
+                });
+
+            modelBuilder.Entity("RecNet.Domain.Profiles.Relationship", b =>
+                {
+                    b.Property<Guid>("OwnerProfileId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("ProfileId")
+                        .HasColumnType("uuid");
+
+                    b.Property<bool>("Ignored")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("Muted")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("OwnerProfileId", "ProfileId");
+
+                    b.HasIndex("ProfileId");
+
+                    b.ToTable("Relationships");
+                });
+
+            modelBuilder.Entity("RecNet.Domain.Profiles.PlayerSetting", b =>
+                {
+                    b.HasOne("RecNet.Domain.Profiles.Profile", null)
+                        .WithMany("Settings")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("RecNet.Domain.Profiles.Profile", b =>
+                {
+                    b.OwnsOne("RecNet.Domain.Profiles.Avatar", "Avatar", b1 =>
+                        {
+                            b1.Property<Guid>("ProfileId")
+                                .HasColumnType("uuid");
+
+                            b1.Property<string>("HairColor")
+                                .IsRequired()
+                                .HasColumnType("text");
+
+                            b1.Property<string>("OutfitSelections")
+                                .IsRequired()
+                                .HasColumnType("text");
+
+                            b1.Property<string>("SkinColor")
+                                .IsRequired()
+                                .HasColumnType("text");
+
+                            b1.HasKey("ProfileId");
+
+                            b1.ToTable("Profiles");
+
+                            b1.WithOwner()
+                                .HasForeignKey("ProfileId");
+                        });
+
+                    b.Navigation("Avatar")
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("RecNet.Domain.Profiles.Relationship", b =>
+                {
+                    b.HasOne("RecNet.Domain.Profiles.Profile", null)
+                        .WithMany("Relationships")
+                        .HasForeignKey("OwnerProfileId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RecNet.Domain.Profiles.Profile", null)
+                        .WithMany()
+                        .HasForeignKey("ProfileId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("RecNet.Domain.Profiles.Profile", b =>
+                {
+                    b.Navigation("Relationships");
+
+                    b.Navigation("Settings");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

src/RecNet.Infrastructure/Persistence/Migrations/20260626215037_Relationships.cs

@@ -0,0 +1,53 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace RecNet.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class Relationships : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Relationships",
+                columns: table => new
+                {
+                    OwnerProfileId = table.Column<Guid>(type: "uuid", nullable: false),
+                    ProfileId = table.Column<Guid>(type: "uuid", nullable: false),
+                    Muted = table.Column<bool>(type: "boolean", nullable: false),
+                    Ignored = table.Column<bool>(type: "boolean", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Relationships", x => new { x.OwnerProfileId, x.ProfileId });
+                    table.ForeignKey(
+                        name: "FK_Relationships_Profiles_OwnerProfileId",
+                        column: x => x.OwnerProfileId,
+                        principalTable: "Profiles",
+                        principalColumn: "ProfileId",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Relationships_Profiles_ProfileId",
+                        column: x => x.ProfileId,
+                        principalTable: "Profiles",
+                        principalColumn: "ProfileId",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Relationships_ProfileId",
+                table: "Relationships",
+                column: "ProfileId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Relationships");
+        }
+    }
+}

src/RecNet.Infrastructure/Persistence/Migrations/DatabaseContextModelSnapshot.cs

@@ -118,6 +118,27 @@ namespace RecNet.Infrastructure.Persistence.Migrations
                     b.ToTable("Profiles");
                 });
 
+            modelBuilder.Entity("RecNet.Domain.Profiles.Relationship", b =>
+                {
+                    b.Property<Guid>("OwnerProfileId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("ProfileId")
+                        .HasColumnType("uuid");
+
+                    b.Property<bool>("Ignored")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("Muted")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("OwnerProfileId", "ProfileId");
+
+                    b.HasIndex("ProfileId");
+
+                    b.ToTable("Relationships");
+                });
+
             modelBuilder.Entity("RecNet.Domain.Profiles.PlayerSetting", b =>
                 {
                     b.HasOne("RecNet.Domain.Profiles.Profile", null)
@@ -158,8 +179,25 @@ namespace RecNet.Infrastructure.Persistence.Migrations
                         .IsRequired();
                 });
 
+            modelBuilder.Entity("RecNet.Domain.Profiles.Relationship", b =>
+                {
+                    b.HasOne("RecNet.Domain.Profiles.Profile", null)
+                        .WithMany("Relationships")
+                        .HasForeignKey("OwnerProfileId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RecNet.Domain.Profiles.Profile", null)
+                        .WithMany()
+                        .HasForeignKey("ProfileId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("RecNet.Domain.Profiles.Profile", b =>
                 {
+                    b.Navigation("Relationships");
+
                     b.Navigation("Settings");
                 });
 #pragma warning restore 612, 618

src/RecNet.Infrastructure/Persistence/Repositories/RelationshipRepository.cs

@@ -0,0 +1,31 @@
+using Microsoft.EntityFrameworkCore;
+using RecNet.Domain.Profiles;
+
+namespace RecNet.Infrastructure.Persistence.Repositories;
+
+public class RelationshipRepository(DatabaseContext dbContext) : IRelationshipRepository
+{
+    public Task<Relationship?> GetAsync(
+        Guid ownerId, 
+        Guid profileId, 
+        CancellationToken ct = default)
+        => dbContext.Relationships
+            .FirstOrDefaultAsync(x => 
+                x.OwnerProfileId == ownerId && 
+                x.ProfileId == profileId, 
+                ct);
+
+    public async Task<IReadOnlyList<Relationship>> GetAllOwnedRelationships(Guid ownerId, CancellationToken ct = default)
+        => await dbContext.Relationships
+            .AsNoTracking()
+            .Where(x => x.OwnerProfileId == ownerId)
+            .ToListAsync(ct);
+
+    public async Task AddAsync(
+        Relationship relationship, 
+        CancellationToken ct = default)
+        => await dbContext.Relationships.AddAsync(relationship, ct);
+
+    public Task SaveChangesAsync(CancellationToken ct = default)
+        => dbContext.SaveChangesAsync(ct);
+}