Model fixes

9 files changed, 545 insertions, 23 deletions

diff --git a/backend/Elements.Backend/Controllers/ElementController.cs b/backend/Elements.Backend/Controllers/ElementController.cs
index 890f614..2f57514 100644
--- a/backend/Elements.Backend/Controllers/ElementController.cs
+++ b/backend/Elements.Backend/Controllers/ElementController.cs
@@ -51,13 +51,13 @@ public class ElementController : ControllerBase
         if (!firstExists || !secondExists)
             return BadRequest();
 
-        Recipe? recipe = await _dbContext.Recipes.Include(r => r.Result).FirstOrDefaultAsync(r =>
-            (r.FirstIngredient.Id == firstElementId && r.SecondIngredient.Id == secondElementId) ||
-            (r.FirstIngredient.Id == secondElementId && r.SecondIngredient.Id == firstElementId));
+        Recipe? recipe = await _dbContext.Recipes.Include(r => r.ResultElement).FirstOrDefaultAsync(r =>
+            (r.FirstElementId == firstElementId && r.SecondElementId == secondElementId) ||
+            (r.FirstElementId == secondElementId && r.SecondElementId == firstElementId));
         if (recipe == null)
             return NotFound();
 
         var serializeOptions = new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase };
-        return Ok(JsonSerializer.Serialize(recipe.Result, serializeOptions));
+        return Ok(JsonSerializer.Serialize(recipe.ResultElement, serializeOptions));
     }
 }
\ No newline at end of file
diff --git a/backend/Elements.Backend/Controllers/SuggestionController.cs b/backend/Elements.Backend/Controllers/SuggestionController.cs
index 77a3944..040b19b 100644
--- a/backend/Elements.Backend/Controllers/SuggestionController.cs
+++ b/backend/Elements.Backend/Controllers/SuggestionController.cs
@@ -112,16 +112,18 @@ public class SuggestionController : ControllerBase
         if (currentUserId == null)
             return StatusCode(StatusCodes.Status500InternalServerError);
 
+        //User already suggested something
         if (await _dbContext.Suggestions.AnyAsync(s => s.UserId.ToString() == currentUserId))
             return BadRequest();
 
         Suggestion newSuggestion = new()
         {
+            CreationDate = DateTime.UtcNow,
             Name = suggestion.Name,
             Icon = ConvertBitmapToPng(Convert.FromBase64String(suggestion.IconBitmap)),
             FirstElementId = suggestion.FirstElementId,
             SecondElementId = suggestion.SecondElementId,
-            VotingEnd = DateTime.UtcNow + TimeSpan.FromMinutes(1),
+            VotingEnd = DateTime.UtcNow + TimeSpan.FromSeconds(10),
             UserId = int.Parse(currentUserId)
         };
         await _dbContext.Suggestions.AddAsync(newSuggestion);
diff --git a/backend/Elements.Data/ApplicationDbContext.cs b/backend/Elements.Data/ApplicationDbContext.cs
index d971b4e..460e730 100644
--- a/backend/Elements.Data/ApplicationDbContext.cs
+++ b/backend/Elements.Data/ApplicationDbContext.cs
@@ -36,6 +36,7 @@ public class ApplicationDbContext : DbContext
             new Element()

             {

                 Id = 1,

+                CreationDate = DateTime.UtcNow,

                 Name = "Fire",

                 UserId = 1,

                 State = ElementState.HasIcon,

@@ -44,6 +45,7 @@ public class ApplicationDbContext : DbContext
             new Element()

             {

                 Id = 2,

+                CreationDate = DateTime.UtcNow,

                 Name = "Water",

                 UserId = 1,

                 State = ElementState.HasIcon,

@@ -52,6 +54,7 @@ public class ApplicationDbContext : DbContext
             new Element()

             {

                 Id = 3,

+                CreationDate = DateTime.UtcNow,

                 Name = "Air",

                 UserId = 1,

                 State = ElementState.HasIcon,

@@ -60,6 +63,7 @@ public class ApplicationDbContext : DbContext
             new Element()

             {

                 Id = 4,

+                CreationDate = DateTime.UtcNow,

                 Name = "Ground",

                 UserId = 1,

                 State = ElementState.HasIcon,

diff --git a/backend/Elements.Data/Migrations/20231024192803_Add creation dates.Designer.cs b/backend/Elements.Data/Migrations/20231024192803_Add creation dates.Designer.cs
new file mode 100644
index 0000000..ae7fa06
--- /dev/null
+++ b/backend/Elements.Data/Migrations/20231024192803_Add creation dates.Designer.cs
@@ -0,0 +1,299 @@
+// <auto-generated />
+using System;
+using Elements.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace Elements.Data.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    [Migration("20231024192803_Add creation dates")]
+    partial class Addcreationdates
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "7.0.12");
+
+            modelBuilder.Entity("Elements.Data.Models.Element", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("CreationDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<byte[]>("IconPng")
+                        .IsRequired()
+                        .HasColumnType("BLOB");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("State")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Elements");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(1750),
+                            IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 29, 73, 68, 65, 84, 120, 156, 99, 249, 95, 224, 252, 159, 129, 2, 192, 194, 64, 33, 24, 53, 96, 212, 128, 81, 3, 6, 139, 1, 0, 119, 65, 2, 242, 233, 108, 215, 141, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
+                            Name = "Fire",
+                            State = 1,
+                            UserId = 1
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(2880),
+                            IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 29, 73, 68, 65, 84, 120, 156, 99, 81, 156, 246, 249, 63, 3, 5, 128, 133, 129, 66, 48, 106, 192, 168, 1, 163, 6, 12, 22, 3, 0, 85, 67, 2, 234, 36, 203, 134, 16, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
+                            Name = "Water",
+                            State = 1,
+                            UserId = 1
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(3350),
+                            IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 30, 73, 68, 65, 84, 120, 156, 99, 217, 125, 239, 247, 127, 6, 10, 0, 11, 3, 133, 96, 212, 128, 81, 3, 70, 13, 24, 44, 6, 0, 0, 10, 221, 3, 212, 197, 89, 182, 174, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
+                            Name = "Air",
+                            State = 1,
+                            UserId = 1
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(3790),
+                            IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 29, 73, 68, 65, 84, 120, 156, 99, 137, 117, 48, 255, 207, 64, 1, 96, 97, 160, 16, 140, 26, 48, 106, 192, 168, 1, 131, 197, 0, 0, 242, 75, 2, 20, 1, 55, 196, 168, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
+                            Name = "Ground",
+                            State = 1,
+                            UserId = 1
+                        });
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Recipe", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("FirstElementId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ResultElementId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("SecondElementId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("FirstElementId");
+
+                    b.HasIndex("ResultElementId");
+
+                    b.HasIndex("SecondElementId");
+
+                    b.ToTable("Recipes");
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Suggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("CreationDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("FirstElementId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<byte[]>("Icon")
+                        .IsRequired()
+                        .HasColumnType("BLOB");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("SecondElementId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("VotingEnd")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("FirstElementId");
+
+                    b.HasIndex("SecondElementId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Suggestions");
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("GoogleId")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            GoogleId = "",
+                            Name = "Elements"
+                        });
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Vote", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("SuggestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SuggestionId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Votes");
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Element", b =>
+                {
+                    b.HasOne("Elements.Data.Models.User", "User")
+                        .WithMany("Elements")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Recipe", b =>
+                {
+                    b.HasOne("Elements.Data.Models.Element", "FirstElement")
+                        .WithMany()
+                        .HasForeignKey("FirstElementId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Elements.Data.Models.Element", "ResultElement")
+                        .WithMany()
+                        .HasForeignKey("ResultElementId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Elements.Data.Models.Element", "SecondElement")
+                        .WithMany()
+                        .HasForeignKey("SecondElementId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("FirstElement");
+
+                    b.Navigation("ResultElement");
+
+                    b.Navigation("SecondElement");
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Suggestion", b =>
+                {
+                    b.HasOne("Elements.Data.Models.Element", "FirstElement")
+                        .WithMany()
+                        .HasForeignKey("FirstElementId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Elements.Data.Models.Element", "SecondElement")
+                        .WithMany()
+                        .HasForeignKey("SecondElementId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Elements.Data.Models.User", null)
+                        .WithMany("Suggestions")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("FirstElement");
+
+                    b.Navigation("SecondElement");
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Vote", b =>
+                {
+                    b.HasOne("Elements.Data.Models.Suggestion", null)
+                        .WithMany("Votes")
+                        .HasForeignKey("SuggestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("Elements.Data.Models.User", null)
+                        .WithMany("Votes")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.Suggestion", b =>
+                {
+                    b.Navigation("Votes");
+                });
+
+            modelBuilder.Entity("Elements.Data.Models.User", b =>
+                {
+                    b.Navigation("Elements");
+
+                    b.Navigation("Suggestions");
+
+                    b.Navigation("Votes");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/backend/Elements.Data/Migrations/20231024192803_Add creation dates.cs b/backend/Elements.Data/Migrations/20231024192803_Add creation dates.cs
new file mode 100644
index 0000000..3612108
--- /dev/null
+++ b/backend/Elements.Data/Migrations/20231024192803_Add creation dates.cs
@@ -0,0 +1,201 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Elements.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class Addcreationdates : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Recipes_Elements_FirstIngredientId",
+                table: "Recipes");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Recipes_Elements_ResultId",
+                table: "Recipes");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Recipes_Elements_SecondIngredientId",
+                table: "Recipes");
+
+            migrationBuilder.RenameColumn(
+                name: "SecondIngredientId",
+                table: "Recipes",
+                newName: "SecondElementId");
+
+            migrationBuilder.RenameColumn(
+                name: "ResultId",
+                table: "Recipes",
+                newName: "ResultElementId");
+
+            migrationBuilder.RenameColumn(
+                name: "FirstIngredientId",
+                table: "Recipes",
+                newName: "FirstElementId");
+
+            migrationBuilder.RenameIndex(
+                name: "IX_Recipes_SecondIngredientId",
+                table: "Recipes",
+                newName: "IX_Recipes_SecondElementId");
+
+            migrationBuilder.RenameIndex(
+                name: "IX_Recipes_ResultId",
+                table: "Recipes",
+                newName: "IX_Recipes_ResultElementId");
+
+            migrationBuilder.RenameIndex(
+                name: "IX_Recipes_FirstIngredientId",
+                table: "Recipes",
+                newName: "IX_Recipes_FirstElementId");
+
+            migrationBuilder.AddColumn<DateTime>(
+                name: "CreationDate",
+                table: "Suggestions",
+                type: "TEXT",
+                nullable: false,
+                defaultValue: new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified));
+
+            migrationBuilder.AddColumn<DateTime>(
+                name: "CreationDate",
+                table: "Elements",
+                type: "TEXT",
+                nullable: false,
+                defaultValue: new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified));
+
+            migrationBuilder.UpdateData(
+                table: "Elements",
+                keyColumn: "Id",
+                keyValue: 1,
+                column: "CreationDate",
+                value: new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(1750));
+
+            migrationBuilder.UpdateData(
+                table: "Elements",
+                keyColumn: "Id",
+                keyValue: 2,
+                column: "CreationDate",
+                value: new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(2880));
+
+            migrationBuilder.UpdateData(
+                table: "Elements",
+                keyColumn: "Id",
+                keyValue: 3,
+                column: "CreationDate",
+                value: new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(3350));
+
+            migrationBuilder.UpdateData(
+                table: "Elements",
+                keyColumn: "Id",
+                keyValue: 4,
+                column: "CreationDate",
+                value: new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(3790));
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Recipes_Elements_FirstElementId",
+                table: "Recipes",
+                column: "FirstElementId",
+                principalTable: "Elements",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Recipes_Elements_ResultElementId",
+                table: "Recipes",
+                column: "ResultElementId",
+                principalTable: "Elements",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Recipes_Elements_SecondElementId",
+                table: "Recipes",
+                column: "SecondElementId",
+                principalTable: "Elements",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Recipes_Elements_FirstElementId",
+                table: "Recipes");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Recipes_Elements_ResultElementId",
+                table: "Recipes");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Recipes_Elements_SecondElementId",
+                table: "Recipes");
+
+            migrationBuilder.DropColumn(
+                name: "CreationDate",
+                table: "Suggestions");
+
+            migrationBuilder.DropColumn(
+                name: "CreationDate",
+                table: "Elements");
+
+            migrationBuilder.RenameColumn(
+                name: "SecondElementId",
+                table: "Recipes",
+                newName: "SecondIngredientId");
+
+            migrationBuilder.RenameColumn(
+                name: "ResultElementId",
+                table: "Recipes",
+                newName: "ResultId");
+
+            migrationBuilder.RenameColumn(
+                name: "FirstElementId",
+                table: "Recipes",
+                newName: "FirstIngredientId");
+
+            migrationBuilder.RenameIndex(
+                name: "IX_Recipes_SecondElementId",
+                table: "Recipes",
+                newName: "IX_Recipes_SecondIngredientId");
+
+            migrationBuilder.RenameIndex(
+                name: "IX_Recipes_ResultElementId",
+                table: "Recipes",
+                newName: "IX_Recipes_ResultId");
+
+            migrationBuilder.RenameIndex(
+                name: "IX_Recipes_FirstElementId",
+                table: "Recipes",
+                newName: "IX_Recipes_FirstIngredientId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Recipes_Elements_FirstIngredientId",
+                table: "Recipes",
+                column: "FirstIngredientId",
+                principalTable: "Elements",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Recipes_Elements_ResultId",
+                table: "Recipes",
+                column: "ResultId",
+                principalTable: "Elements",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Recipes_Elements_SecondIngredientId",
+                table: "Recipes",
+                column: "SecondIngredientId",
+                principalTable: "Elements",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+    }
+}
diff --git a/backend/Elements.Data/Migrations/ApplicationDbContextModelSnapshot.cs b/backend/Elements.Data/Migrations/ApplicationDbContextModelSnapshot.cs
index 5964a6c..7b88425 100644
--- a/backend/Elements.Data/Migrations/ApplicationDbContextModelSnapshot.cs
+++ b/backend/Elements.Data/Migrations/ApplicationDbContextModelSnapshot.cs
@@ -23,6 +23,9 @@ namespace Elements.Data.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
+                    b.Property<DateTime>("CreationDate")
+                        .HasColumnType("TEXT");
+
                     b.Property<byte[]>("IconPng")
                         .IsRequired()
                         .HasColumnType("BLOB");
@@ -47,6 +50,7 @@ namespace Elements.Data.Migrations
                         new
                         {
                             Id = 1,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(1750),
                             IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 29, 73, 68, 65, 84, 120, 156, 99, 249, 95, 224, 252, 159, 129, 2, 192, 194, 64, 33, 24, 53, 96, 212, 128, 81, 3, 6, 139, 1, 0, 119, 65, 2, 242, 233, 108, 215, 141, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
                             Name = "Fire",
                             State = 1,
@@ -55,6 +59,7 @@ namespace Elements.Data.Migrations
                         new
                         {
                             Id = 2,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(2880),
                             IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 29, 73, 68, 65, 84, 120, 156, 99, 81, 156, 246, 249, 63, 3, 5, 128, 133, 129, 66, 48, 106, 192, 168, 1, 163, 6, 12, 22, 3, 0, 85, 67, 2, 234, 36, 203, 134, 16, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
                             Name = "Water",
                             State = 1,
@@ -63,6 +68,7 @@ namespace Elements.Data.Migrations
                         new
                         {
                             Id = 3,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(3350),
                             IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 30, 73, 68, 65, 84, 120, 156, 99, 217, 125, 239, 247, 127, 6, 10, 0, 11, 3, 133, 96, 212, 128, 81, 3, 70, 13, 24, 44, 6, 0, 0, 10, 221, 3, 212, 197, 89, 182, 174, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
                             Name = "Air",
                             State = 1,
@@ -71,6 +77,7 @@ namespace Elements.Data.Migrations
                         new
                         {
                             Id = 4,
+                            CreationDate = new DateTime(2023, 10, 24, 19, 28, 3, 290, DateTimeKind.Utc).AddTicks(3790),
                             IconPng = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0, 16, 0, 0, 0, 16, 8, 6, 0, 0, 0, 31, 243, 255, 97, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 14, 196, 0, 0, 14, 196, 1, 149, 43, 14, 27, 0, 0, 0, 29, 73, 68, 65, 84, 120, 156, 99, 137, 117, 48, 255, 207, 64, 1, 96, 97, 160, 16, 140, 26, 48, 106, 192, 168, 1, 131, 197, 0, 0, 242, 75, 2, 20, 1, 55, 196, 168, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130 },
                             Name = "Ground",
                             State = 1,
@@ -84,22 +91,22 @@ namespace Elements.Data.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("FirstIngredientId")
+                    b.Property<int>("FirstElementId")
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("ResultId")
+                    b.Property<int>("ResultElementId")
                         .HasColumnType("INTEGER");
 
-                    b.Property<int>("SecondIngredientId")
+                    b.Property<int>("SecondElementId")
                         .HasColumnType("INTEGER");
 
                     b.HasKey("Id");
 
-                    b.HasIndex("FirstIngredientId");
+                    b.HasIndex("FirstElementId");
 
-                    b.HasIndex("ResultId");
+                    b.HasIndex("ResultElementId");
 
-                    b.HasIndex("SecondIngredientId");
+                    b.HasIndex("SecondElementId");
 
                     b.ToTable("Recipes");
                 });
@@ -110,6 +117,9 @@ namespace Elements.Data.Migrations
                         .ValueGeneratedOnAdd()
                         .HasColumnType("INTEGER");
 
+                    b.Property<DateTime>("CreationDate")
+                        .HasColumnType("TEXT");
+
                     b.Property<int>("FirstElementId")
                         .HasColumnType("INTEGER");
 
@@ -202,29 +212,29 @@ namespace Elements.Data.Migrations
 
             modelBuilder.Entity("Elements.Data.Models.Recipe", b =>
                 {
-                    b.HasOne("Elements.Data.Models.Element", "FirstIngredient")
+                    b.HasOne("Elements.Data.Models.Element", "FirstElement")
                         .WithMany()
-                        .HasForeignKey("FirstIngredientId")
+                        .HasForeignKey("FirstElementId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.HasOne("Elements.Data.Models.Element", "Result")
+                    b.HasOne("Elements.Data.Models.Element", "ResultElement")
                         .WithMany()
-                        .HasForeignKey("ResultId")
+                        .HasForeignKey("ResultElementId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.HasOne("Elements.Data.Models.Element", "SecondIngredient")
+                    b.HasOne("Elements.Data.Models.Element", "SecondElement")
                         .WithMany()
-                        .HasForeignKey("SecondIngredientId")
+                        .HasForeignKey("SecondElementId")
                         .OnDelete(DeleteBehavior.Cascade)
                         .IsRequired();
 
-                    b.Navigation("FirstIngredient");
+                    b.Navigation("FirstElement");
 
-                    b.Navigation("Result");
+                    b.Navigation("ResultElement");
 
-                    b.Navigation("SecondIngredient");
+                    b.Navigation("SecondElement");
                 });
 
             modelBuilder.Entity("Elements.Data.Models.Suggestion", b =>
diff --git a/backend/Elements.Data/Models/Element.cs b/backend/Elements.Data/Models/Element.cs
index 273c83d..774b7ee 100644
--- a/backend/Elements.Data/Models/Element.cs
+++ b/backend/Elements.Data/Models/Element.cs
@@ -10,6 +10,7 @@ public enum ElementState {
 
 public class Element {
     public int Id {get; set;}
+    public required DateTime CreationDate { get; init; }
     public required int UserId { get; init; }
     public required string Name {get; init;}
     public required ElementState State {get; init;}
diff --git a/backend/Elements.Data/Models/Recipe.cs b/backend/Elements.Data/Models/Recipe.cs
index a942561..6fdcd78 100644
--- a/backend/Elements.Data/Models/Recipe.cs
+++ b/backend/Elements.Data/Models/Recipe.cs
@@ -3,7 +3,11 @@ namespace Elements.Data.Models;
 public class Recipe
 {
     public int Id { get; set; }
-    public required Element FirstIngredient { get; init; }
-    public required Element SecondIngredient { get; set; }
-    public required Element Result { get; set; }
+    public required int FirstElementId { get; init; }
+    public required int SecondElementId { get; init; }
+    public required int ResultElementId { get; init; }
+
+    public Element FirstElement { get; set; } = null!;
+    public Element SecondElement { get; set; } = null!;
+    public Element ResultElement { get; set; } = null!;
 }
\ No newline at end of file
diff --git a/backend/Elements.Data/Models/Suggestion.cs b/backend/Elements.Data/Models/Suggestion.cs
index bd936a4..7f30761 100644
--- a/backend/Elements.Data/Models/Suggestion.cs
+++ b/backend/Elements.Data/Models/Suggestion.cs
@@ -3,6 +3,7 @@ namespace Elements.Data.Models;
 public class Suggestion
 {
     public int Id { get; set; }
+    public required DateTime CreationDate { get; init; }
     public required string Name { get; init; }
     public required byte[] Icon { get; init; }
     public required int FirstElementId { get; init; }