Create initial database schema

src/Giveaways.Data/AppDbContext.cs

@@ -11,6 +11,6 @@ namespace Giveaways.Data;
 /// <param name="options">The options for this context.</param>
 public class AppDbContext(DbContextOptions<AppDbContext> options) : DbContext(options)
 {
-    // TODO: Configure the database context.
-    // Learn more at the https://learn.microsoft.com/ef/core.
+    public DbSet<Giveaway> Giveaways { get; set; }
+    public DbSet<GiveawayParticipant> GiveawayParticipants { get; set; }
 }

src/Giveaways.Data/Migrations/20240624181527_InitialCreate.cs

@@ -0,0 +1,66 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Giveaways.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitialCreate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Giveaways",
+                columns: table => new
+                {
+                    MessageId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    ChannelId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    GuildId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    Prize = table.Column<string>(type: "TEXT", nullable: false),
+                    MaxWinners = table.Column<int>(type: "INTEGER", nullable: false),
+                    ExpiresAt = table.Column<DateTime>(type: "TEXT", nullable: false),
+                    Status = table.Column<int>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Giveaways", x => x.MessageId);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "GiveawayParticipants",
+                columns: table => new
+                {
+                    UserId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    GiveawayId = table.Column<ulong>(type: "INTEGER", nullable: false),
+                    IsWinner = table.Column<bool>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_GiveawayParticipants", x => new { x.UserId, x.GiveawayId });
+                    table.ForeignKey(
+                        name: "FK_GiveawayParticipants_Giveaways_GiveawayId",
+                        column: x => x.GiveawayId,
+                        principalTable: "Giveaways",
+                        principalColumn: "MessageId",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_GiveawayParticipants_GiveawayId",
+                table: "GiveawayParticipants",
+                column: "GiveawayId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "GiveawayParticipants");
+
+            migrationBuilder.DropTable(
+                name: "Giveaways");
+        }
+    }
+}

src/Giveaways.Data/Migrations/AppDbContextModelSnapshot.cs

@@ -0,0 +1,85 @@
+// <auto-generated />
+using System;
+using Giveaways.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace Giveaways.Data.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    partial class AppDbContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "8.0.0");
+
+            modelBuilder.Entity("Giveaways.Data.Giveaway", b =>
+                {
+                    b.Property<ulong>("MessageId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("ChannelId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("ExpiresAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<ulong>("GuildId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("MaxWinners")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Prize")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("MessageId");
+
+                    b.ToTable("Giveaways");
+                });
+
+            modelBuilder.Entity("Giveaways.Data.GiveawayParticipant", b =>
+                {
+                    b.Property<ulong>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("GiveawayId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("IsWinner")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("UserId", "GiveawayId");
+
+                    b.HasIndex("GiveawayId");
+
+                    b.ToTable("GiveawayParticipants");
+                });
+
+            modelBuilder.Entity("Giveaways.Data.GiveawayParticipant", b =>
+                {
+                    b.HasOne("Giveaways.Data.Giveaway", "Giveaway")
+                        .WithMany("Participants")
+                        .HasForeignKey("GiveawayId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Giveaway");
+                });
+
+            modelBuilder.Entity("Giveaways.Data.Giveaway", b =>
+                {
+                    b.Navigation("Participants");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

src/Giveaways.Data/Models/Giveaway.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Giveaways.Data;
+
+/// <summary>
+/// Represents a giveaway hosted by a user.
+/// </summary>
+public class Giveaway
+{
+    /// <summary>
+    /// Gets the message identifier of the giveaway message.
+    /// </summary>
+    [Key]
+    [DatabaseGenerated(DatabaseGeneratedOption.None)]
+    public required ulong MessageId { get; init; }
+
+    /// <summary>
+    /// Gets the channel identifier where this giveaway was hosted.
+    /// </summary>
+    public required ulong ChannelId { get; init; }
+
+    /// <summary>
+    /// Gets the guild identifier where this giveaway was hosted.
+    /// </summary>
+    public required ulong GuildId { get; init; }
+
+    /// <summary>
+    /// Gets or sets the prize of this giveaway.
+    /// </summary>
+    public required string Prize { get; set; }
+
+    /// <summary>
+    /// Gets or sets the maximum number of winners for this giveaway.
+    /// </summary>
+    public required int MaxWinners { get; set; }
+
+    /// <summary>
+    ///  Gets or sets the expiration date and time for this giveaway.
+    /// </summary>
+    public required DateTime ExpiresAt { get; set; }
+
+    /// <summary>
+    /// Gets or sets the current status of this giveaway.
+    /// </summary>
+    public GiveawayStatus Status { get; set; } = GiveawayStatus.Active;
+
+    /// <summary>
+    /// Gets the list of participants for this giveaway.
+    /// </summary>
+    public List<GiveawayParticipant> Participants { get; } = [];
+}

src/Giveaways.Data/Models/GiveawayParticipant.cs

@@ -0,0 +1,32 @@
+using System.ComponentModel.DataAnnotations.Schema;
+using Microsoft.EntityFrameworkCore;
+
+namespace Giveaways.Data;
+
+/// <summary>
+/// Represents a participant of a giveaway.
+/// </summary>
+[PrimaryKey(nameof(UserId), nameof(GiveawayId))]
+public class GiveawayParticipant
+{
+    /// <summary>
+    /// Gets or sets the user ID of the participant.
+    /// </summary>
+    [DatabaseGenerated(DatabaseGeneratedOption.None)]
+    public ulong UserId { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the participant is a winner.
+    /// </summary>
+    public bool IsWinner { get; set; } = false;
+
+    /// <summary>
+    /// Gets or sets the ID of the giveaway the participant is associated with.
+    /// </summary>
+    public ulong GiveawayId { get; set; }
+
+    /// <summary>
+    /// Gets or sets the reference to the giveaway the participant is associated with.
+    /// </summary>
+    public Giveaway Giveaway { get; set; } = null!;
+}

src/Giveaways.Data/Models/GiveawayStatus.cs

@@ -0,0 +1,22 @@
+namespace Giveaways;
+
+/// <summary>
+/// Represents the status of a giveaway.
+/// </summary>
+public enum GiveawayStatus
+{
+    /// <summary>
+    /// The giveaway is currently active and participants can still enter.
+    /// </summary>
+    Active,
+
+    /// <summary>
+    /// The giveaway is temporarily suspended and not accepting new entries.
+    /// </summary>
+    Suspended,
+
+    /// <summary>
+    /// The giveaway has ended, and winners have been selected.
+    /// </summary>
+    Ended,
+}