Reorganizes Project (#41)

Projects/Scripts/Engines/Factions/Core/FactionItem.cs

@@ -0,0 +1,137 @@
+using System;
+
+namespace Server.Factions
+{
+  public interface IFactionItem
+  {
+    FactionItem FactionItemState{ get; set; }
+  }
+
+  public class FactionItem
+  {
+    public static readonly TimeSpan ExpirationPeriod = TimeSpan.FromDays(21.0);
+
+    public FactionItem(Item item, Faction faction)
+    {
+      Item = item;
+      Faction = faction;
+    }
+
+    public FactionItem(GenericReader reader, Faction faction)
+    {
+      int version = reader.ReadEncodedInt();
+
+      switch (version)
+      {
+        case 0:
+        {
+          Item = reader.ReadItem();
+          Expiration = reader.ReadDateTime();
+          break;
+        }
+      }
+
+      Faction = faction;
+    }
+
+    public Item Item{ get; }
+
+    public Faction Faction{ get; }
+
+    public DateTime Expiration{ get; private set; }
+
+    public bool HasExpired
+    {
+      get
+      {
+        if (Item?.Deleted != false)
+          return true;
+
+        return Expiration != DateTime.MinValue && DateTime.UtcNow >= Expiration;
+      }
+    }
+
+    public void StartExpiration()
+    {
+      Expiration = DateTime.UtcNow + ExpirationPeriod;
+    }
+
+    public void CheckAttach()
+    {
+      if (!HasExpired)
+        Attach();
+      else
+        Detach();
+    }
+
+    public void Attach()
+    {
+      if (Item is IFactionItem item)
+        item.FactionItemState = this;
+
+      Faction?.State.FactionItems.Add(this);
+    }
+
+    public void Detach()
+    {
+      if (Item is IFactionItem item)
+        item.FactionItemState = null;
+
+      if (Faction?.State.FactionItems.Contains(this) == true)
+        Faction.State.FactionItems.Remove(this);
+    }
+
+    public void Serialize(GenericWriter writer)
+    {
+      writer.WriteEncodedInt(0);
+
+      writer.Write(Item);
+      writer.Write(Expiration);
+    }
+
+    public static int GetMaxWearables(Mobile mob)
+    {
+      PlayerState pl = PlayerState.Find(mob);
+
+      return pl == null ? 0 : pl.Faction.IsCommander(mob) ? 9 : pl.Rank.MaxWearables;
+    }
+
+    public static FactionItem Find(Item item)
+    {
+      if (item is IFactionItem factionItem)
+      {
+        FactionItem state = factionItem.FactionItemState;
+
+        if (state?.HasExpired == true)
+        {
+          state.Detach();
+          state = null;
+        }
+
+        return state;
+      }
+
+      return null;
+    }
+
+    public static Item Imbue(Item item, Faction faction, bool expire, int hue)
+    {
+      if (!(item is IFactionItem))
+        return item;
+
+      FactionItem state = Find(item);
+
+      if (state == null)
+      {
+        state = new FactionItem(item, faction);
+        state.Attach();
+      }
+
+      if (expire)
+        state.StartExpiration();
+
+      item.Hue = hue;
+      return item;
+    }
+  }
+}