3 files changed, 85 insertions, 0 deletions
diff --git a/src/DevHive.Data/Models/Language.cs b/src/DevHive.Data/Models/Language.cs
new file mode 100644
index 0000000..a455796
--- /dev/null
+++ b/src/DevHive.Data/Models/Language.cs
@@ -0,0 +1,9 @@
+using System;
+
+namespace DevHive.Data.Models
+{
+	public class Language
+	{
+		public Guid Id { get; set; }
+	}
+}
diff --git a/src/DevHive.Data/Models/Technology.cs b/src/DevHive.Data/Models/Technology.cs
new file mode 100644
index 0000000..6f2afeb
--- /dev/null
+++ b/src/DevHive.Data/Models/Technology.cs
@@ -0,0 +1,9 @@
+using System;
+
+namespace DevHive.Data.Models
+{
+	public class Technology
+	{
+		public Guid Id { get; set; }
+	}
+}
diff --git a/src/DevHive.Data/Models/User.cs b/src/DevHive.Data/Models/User.cs
new file mode 100644
index 0000000..fb1fb43
--- /dev/null
+++ b/src/DevHive.Data/Models/User.cs
@@ -0,0 +1,67 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Microsoft.AspNetCore.Identity;
+
+namespace DevHive.Data.Models
+{
+	[Table("Users")]
+	public class User : IdentityUser<Guid>
+	{
+		private string _firstName;
+		private string _lastName;
+
+		[Required]
+		[Range(3, 50)]
+		[Display(Name = "Username")]
+		public override string UserName
+		{
+			get => base.UserName;
+			set
+			{
+				ValidateString("Username", 3, 50, value, true);
+				base.UserName = value;
+			}
+		}
+
+		[Required]
+		[Range(3, 30)]
+		public string FirstName
+		{
+			get => this._firstName;
+			set
+			{
+				ValidateString("FirstName", 3, 30, value, false);
+				this._firstName = value;
+			}
+		}
+
+		[Required]
+		[Range(3, 30)]
+		public string LastName
+		{
+			get => this._lastName;
+			set
+			{
+				ValidateString("LastName", 3, 30, value, false);
+				this._lastName = value;
+			}
+		}
+
+		public string ProfilePicture { get; set; }
+
+		public string Role { get; set; }
+
+		//public List<User> Friends { get; set; }
+
+		private static void ValidateString(string propertyName, int minLength, int maxLength, string value, bool canBeDigit)
+		{
+			if (value.Length < minLength || value.Length > maxLength)
+				throw new ArgumentException($"{propertyName} length cannot be less than {minLength} and more than {maxLength}.");
+
+			foreach (char ch in value)
+				if (!Char.IsLetter(ch) && !(Char.IsDigit(ch) && canBeDigit))
+					throw new ArgumentException($"{propertyName} contains invalid characters.");
+		}
+	}
+}