Change name

Domain/Domain.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+	<RootNamespace>Musify.Domain</RootNamespace>
+  </PropertyGroup>
+
+</Project>

Domain/Entities/EntityType.cs

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+namespace Musify.Domain.Entities
+{
+    public enum EntityType
+    {
+        User,
+        Track,
+        PlayList
+    }
+}

Domain/Entities/PlayList.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Musify.Domain.Entities
+{
+#pragma warning disable CS8618
+    [Table("PlayLists")]
+    public class PlayList
+    {
+        [Key]
+        public Guid Id { get; set; } = Guid.NewGuid();
+
+        [Required]
+        public required Guid UserId { get; set; }
+
+        [Required]
+        [MaxLength(50)]
+        public required string Name { get; set; }
+
+        [Required]
+        [MaxLength(50)]
+        public required string NormalizedName { get; set; }
+
+        [Required]
+        [MaxLength(254)]
+        public required string Description { get; set; } = "No description was provided.";
+
+        [Required]
+        [MaxLength(64)]
+        public required string SmallPictureKeyName { get; set; }
+
+        [Required]
+        [MaxLength(64)]
+        public required string MediumPictureKeyName { get; set; }
+
+        [Required]
+        [MaxLength(64)]
+        public required string LargePictureKeyName { get; set; }
+
+        [Required]
+        public DateTime CreatedDate { get; set; } = DateTime.UtcNow;
+
+        [Required]
+        public DateTime UpdatedDate { get; set; } = DateTime.UtcNow;
+
+        [ForeignKey(nameof(UserId)) ]
+        public User User { get; set; }
+
+        public ICollection<PlayListHasTrack> PlayListTracks { get; set; } = new List<PlayListHasTrack>();
+    }
+}

Domain/Entities/PlayListHasTrack.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Musify.Domain.Entities
+{
+#pragma warning disable CS8618
+    [Table("PlayListHasTrack")]
+    public class PlayListHasTrack
+    {
+        public Guid Id { get; set; } = Guid.NewGuid();
+
+        [Required]
+        public required Guid PlayListId { get; set; }
+
+        [Required]
+        public required Guid TrackId { get; set; }
+
+        [Required]
+        public int Position { get; set; } = 0;
+
+        [Required]
+        public DateTime AddedAt { get; set; } = DateTime.UtcNow;
+
+        [ForeignKey(nameof(PlayListId)) ]
+        public PlayList PlayList { get; set; }
+
+        [ForeignKey(nameof(TrackId)) ]
+        public Track? Track { get; set; }
+    }
+}

Domain/Entities/Track.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace Musify.Domain.Entities
+{
+#pragma warning disable CS8618
+    public class Track
+    {
+        [Key]
+        public Guid Id { get; set; } = Guid.NewGuid();
+
+        [Required]
+        [MaxLength(50)]
+        public required string Title { get; set; }
+
+        [Required]
+        [MaxLength(50)]
+        public required string NormalizedTitle { get; set; }
+
+        [Required]
+        [MaxLength(64)]
+        public required string ImageName { get; set; }
+
+        [Required]
+        public DateTime CreatedDate { get; set; } = DateTime.UtcNow;
+
+        [Required]
+        public DateTime UpdatedDate { get; set; } = DateTime.UtcNow;
+
+        public ICollection<User> Users { get; set; } = new List<User>();
+
+        public ICollection<PlayListHasTrack> PlayListTracks { get; set; } = new List<PlayListHasTrack>();
+    }
+}

Domain/Entities/Upload.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Musify.Domain.Entities
+{
+    [Table("Upload")]
+    public class Upload
+    {
+        [Key]
+        public Guid Id { get; set; } = Guid.NewGuid();
+
+        [Required]
+        public required string KeyName { get; set; }
+
+        [Required]
+        public required string BucketName { get; set; }
+
+        [Required]
+        public required string ContentType { get; set; }
+
+        [Required]
+        public required EntityType EntityType { get; set; }
+
+        [Required]
+        public required Guid EntityId { get; set; }
+
+        [Required]
+        public UploadState State { get; set; } = UploadState.Pending;
+
+        [Required]
+        public DateTime CreatedTime { get; set; } = DateTime.UtcNow;
+    }
+}

Domain/Entities/UploadState.cs

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+namespace Musify.Domain.Entities
+{
+    public enum UploadState
+    {
+        Pending,
+        Processing,
+        Completed,
+        Failed
+    }
+}

Domain/Entities/User.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Musify.Domain.Entities
+{
+    [Table("User")]
+    public class User
+    {
+        [Key]
+        public required Guid Id { get; set; }
+
+        [Required]
+        public DateTime CreatedAt { get; set; } = DateTime.Now;
+
+        [Required]
+        public DateTime UpdatedAt { get; set; } = DateTime.Now;
+
+        public ICollection<Track> Tracks { get; set; } = new List<Track>();
+
+        public ICollection<PlayList> PlayLists { get; set; } = new List<PlayList>();
+    }
+}