-Implement Schema And Model For Bans And Implement `ModerationService`

-Modify ``User`` To Have Ban Collection
-Add ``Bans`` Table To ``DBContext``

src/Model/DBContext.cs

@@ -25,6 +25,7 @@ public class DBContext : DbContext {
     public DbSet<Party> Parties { get; set; } = null!;
     public DbSet<Neighborhood> Neighborhoods { get; set; } = null!;
     // we had a brief debate on whether it's neighborhoods or neighborheed
+    public DbSet<UserBan> UserBans { get; set; } = null!;
 
     private readonly IOptions<ApiServerConfig> config;
 
@@ -252,5 +253,9 @@ public class DBContext : DbContext {
         builder.Entity<Neighborhood>().HasOne(r => r.Viking)
             .WithOne(e => e.Neighborhood)
             .HasForeignKey<Neighborhood>(e => e.VikingId);
+        
+        builder.Entity<UserBan>().HasOne(r => r.User)
+            .WithMany(e => e.Bans)
+            .HasForeignKey(e => e.UserId);
     }
 }

src/Model/User.cs

@@ -17,4 +17,5 @@ public class User {
     public virtual ICollection<Session> Sessions { get; set; } = null!;
     public virtual ICollection<Viking> Vikings { get; set; } = null!;
     public virtual ICollection<PairData> PairData { get; set; } = null!;
+    public virtual ICollection<UserBan> Bans { get; set; } = null!;
 }

src/Model/UserBan.cs

@@ -0,0 +1,20 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using sodoff.Schema;
+
+namespace sodoff.Model;
+
+public class UserBan
+{
+    [Key]
+    public int Id { get; set; }
+
+    [Required]
+    public Guid? UserId { get; set; } = null!;
+
+    public UserBanType BanType { get; set; } = UserBanType.TemporarySuspension;
+    public DateTime? CreatedAt { get; set; } = new DateTime();
+    public DateTime? EndsAt { get; set; } = new DateTime();
+
+    public virtual User User { get; set; } = null!;
+}

src/Program.cs

@@ -40,6 +40,7 @@ builder.Services.AddScoped<GameDataService>();
 builder.Services.AddScoped<ProfileService>();
 builder.Services.AddScoped<NeighborhoodService>();
 builder.Services.AddScoped<MMOCommunicationService>();
+builder.Services.AddScoped<ModerationService>();
 
 bool assetServer = builder.Configuration.GetSection("AssetServer").GetValue<bool>("Enabled");
 string assetIP = builder.Configuration.GetSection("AssetServer").GetValue<string>("ListenIP");

src/Schema/UserBanType.cs

@@ -0,0 +1,11 @@
+namespace sodoff.Schema;
+
+public enum UserBanType
+{
+    IndefiniteSuspension = 1,
+    IndefiniteMPSuspension = 2,
+    TemporarySuspension = 3,
+    TemporaryMPSuspension = 4,
+    IndefiniteTCSuspension = 5,
+    TemporaryTCSuspension = 6
+}

src/Services/ModerationService.cs

@@ -0,0 +1,67 @@
+using System;
+using sodoff.Model;
+using sodoff.Schema;
+
+namespace sodoff.Services;
+
+public class ModerationService
+{
+    private readonly DBContext ctx;
+
+    public ModerationService(DBContext ctx)
+    {
+        this.ctx = ctx;
+    }
+
+    public UserBan AddBanToUser(User user, UserBanType banType, DateTime dateEnd = new DateTime())
+    {
+        // create a ban in relation to the specified user
+        UserBan userBan = new UserBan
+        {
+            BanType = banType,
+            CreatedAt = DateTime.UtcNow
+        };
+
+        // if suspension is indefinite, set end date to infinity
+        if(banType == UserBanType.IndefiniteSuspension || banType == UserBanType.IndefiniteMPSuspension || banType == UserBanType.IndefiniteTCSuspension) userBan.EndsAt = new DateTime(9999, 01, 01);
+        else userBan.EndsAt = dateEnd;
+
+        // add ban to user ban list
+        user.Bans.Add(userBan);
+
+        // update database
+        ctx.SaveChanges();
+
+        // return ban
+        return userBan;
+    }
+
+    public bool RemoveBanFromUser(User user, UserBan ban)
+    {
+        // remove ban from database if it exists on the user
+        if(user.Bans.FirstOrDefault(e => e == ban) != null) { user.Bans.Remove(ban); ctx.SaveChanges(); return true; }
+        else return false;
+    }
+
+    public bool RemoveAllBansFromUser(User user)
+    {
+        // remove all bans from user if user has any
+        if(user.Bans.Count >= 0) { foreach(var ban in user.Bans) user.Bans.Remove(ban); ctx.SaveChanges(); return true; }
+        else return false;
+    }
+
+    public UserBan GetLatestBanFromUser(User user)
+    {
+        // retreive the most recently created ban from user
+        UserBan? userBan = user.Bans.OrderByDescending(e => e.CreatedAt).FirstOrDefault();
+
+        if(userBan != null) return userBan;
+        else return null!; // return null if the user has no bans on record
+    }
+
+    public ICollection<UserBan> GetAllBansFromUser(User user, bool descendingOrder = false)
+    {
+        if(descendingOrder) return user.Bans.OrderByDescending(e => e.CreatedAt).ToList();
+        else return user.Bans.OrderBy(e => e.CreatedAt).ToList(); // return sorted list by created date
+    }
+}