using System;
using System.Collections.Generic;
using System.IO;

namespace Server.Engines.BulkOrders
{
  public class SmallBulkEntry
  {
    public Type Type { get; }

    public int Number { get; }

    public int Graphic { get; }

    public SmallBulkEntry(Type type, int number, int graphic)
    {
      Type = type;
      Number = number;
      Graphic = graphic;
    }

    public static SmallBulkEntry[] BlacksmithWeapons => GetEntries("Blacksmith", "weapons");

    public static SmallBulkEntry[] BlacksmithArmor => GetEntries("Blacksmith", "armor");

    public static SmallBulkEntry[] TailorCloth => GetEntries("Tailoring", "cloth");

    public static SmallBulkEntry[] TailorLeather => GetEntries("Tailoring", "leather");

    private static Dictionary<string, Dictionary<string, SmallBulkEntry[]>> m_Cache;

    public static SmallBulkEntry[] GetEntries(string type, string name)
    {
      if (m_Cache == null)
        m_Cache = new Dictionary<string, Dictionary<string, SmallBulkEntry[]>>();

      if (!m_Cache.TryGetValue(type, out Dictionary<string, SmallBulkEntry[]> table))
        m_Cache[type] = table = new Dictionary<string, SmallBulkEntry[]>();

      if (!table.TryGetValue(name, out SmallBulkEntry[] entries))
        table[name] = entries = LoadEntries(type, name);

      return entries;
    }

    public static SmallBulkEntry[] LoadEntries(string type, string name) => LoadEntries($"Data/Bulk Orders/{type}/{name}.cfg");

    public static SmallBulkEntry[] LoadEntries(string path)
    {
      path = Path.Combine(Core.BaseDirectory, path);

      List<SmallBulkEntry> list = new List<SmallBulkEntry>();

      if (File.Exists(path))
      {
        using StreamReader ip = new StreamReader(path);
        string line;

        while ((line = ip.ReadLine()) != null)
        {
          if (line.Length == 0 || line.StartsWith("#"))
            continue;

          try
          {
            string[] split = line.Split('\t');

            if (split.Length >= 2)
            {
              Type type = AssemblyHandler.FindFirstTypeForName(split[0]);
              int graphic = Utility.ToInt32(split[split.Length - 1]);

              if (type != null && graphic > 0)
                list.Add(new SmallBulkEntry(type, graphic < 0x4000 ? 1020000 + graphic : 1078872 + graphic, graphic));
            }
          }
          catch
          {
            // ignored
          }
        }
      }

      return list.ToArray();
    }
  }
}