Add user foreign key to user last contacts

Closes #247

ProjectLighthouse/Migrations/20220413192851_AddUserForeignKeyToLastContacts.cs

@@ -0,0 +1,57 @@
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using LBPUnion.ProjectLighthouse;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace ProjectLighthouse.Migrations
+{
+    [DbContext(typeof(Database))]
+    [Migration("20220413192851_AddUserForeignKeyToLastContacts")]
+    public partial class AddUserForeignKeyToLastContacts : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            // We have to delete the previous last contact information here, since we cannot guarantee that it exists.
+            // There's no reliance on this information for long-term usage anyways.
+            // See https://github.com/LBPUnion/ProjectLighthouse/issues/247 for more information
+            migrationBuilder.Sql("DELETE FROM LastContacts;");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "UserId",
+                table: "LastContacts",
+                type: "int",
+                nullable: false,
+                oldClrType: typeof(int),
+                oldType: "int")
+                .OldAnnotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_LastContacts_Users_UserId",
+                table: "LastContacts",
+                column: "UserId",
+                principalTable: "Users",
+                principalColumn: "UserId",
+                onDelete: ReferentialAction.Cascade);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_LastContacts_Users_UserId",
+                table: "LastContacts");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "UserId",
+                table: "LastContacts",
+                type: "int",
+                nullable: false,
+                oldClrType: typeof(int),
+                oldType: "int")
+                .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn);
+        }
+    }
+}

ProjectLighthouse/Migrations/DatabaseModelSnapshot.cs

@@ -15,7 +15,7 @@ namespace ProjectLighthouse.Migrations
         {
 #pragma warning disable 612, 618
             modelBuilder
-                .HasAnnotation("ProductVersion", "6.0.3")
+                .HasAnnotation("ProductVersion", "6.0.4")
                 .HasAnnotation("Relational:MaxIdentifierLength", 64);
 
             modelBuilder.Entity("LBPUnion.ProjectLighthouse.Types.AuthenticationAttempt", b =>
@@ -493,7 +493,6 @@ namespace ProjectLighthouse.Migrations
             modelBuilder.Entity("LBPUnion.ProjectLighthouse.Types.Profiles.LastContact", b =>
                 {
                     b.Property<int>("UserId")
-                        .ValueGeneratedOnAdd()
                         .HasColumnType("int");
 
                     b.Property<int>("GameVersion")
@@ -989,6 +988,17 @@ namespace ProjectLighthouse.Migrations
                     b.Navigation("User");
                 });
 
+            modelBuilder.Entity("LBPUnion.ProjectLighthouse.Types.Profiles.LastContact", b =>
+                {
+                    b.HasOne("LBPUnion.ProjectLighthouse.Types.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
             modelBuilder.Entity("LBPUnion.ProjectLighthouse.Types.Reports.GriefReport", b =>
                 {
                     b.HasOne("LBPUnion.ProjectLighthouse.Types.User", "ReportingPlayer")

ProjectLighthouse/Types/Profiles/LastContact.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace LBPUnion.ProjectLighthouse.Types.Profiles;
 
@@ -7,6 +8,9 @@ public class LastContact
     [Key]
     public int UserId { get; set; }
 
+    [ForeignKey(nameof(UserId))]
+    public User User { get; set; }
+
     public long Timestamp { get; set; }
 
     public GameVersion GameVersion { get; set; } = GameVersion.Unknown;