using System;
using System.Collections.Generic;
using Game.Scripts.Runtime.Data;

namespace MegaKoop.Game.Networking
{
    internal static class EnemyDefinitionRegistry
    {
        private static readonly Dictionary<string, EnemyDefinition> DefinitionsById = new(StringComparer.OrdinalIgnoreCase);
        private static readonly Dictionary<string, EnemyDefinition> DefinitionsByName = new(StringComparer.OrdinalIgnoreCase);

        internal static void Register(EnemyDefinition definition)
        {
            if (definition == null)
            {
                return;
            }

            var id = NormalizeId(definition);
            if (!string.IsNullOrEmpty(id))
            {
                DefinitionsById[id] = definition;
            }

            if (!string.IsNullOrEmpty(definition.name))
            {
                DefinitionsByName[definition.name] = definition;
            }
        }

        internal static bool TryGet(string idOrName, out EnemyDefinition definition)
        {
            definition = null;
            if (string.IsNullOrWhiteSpace(idOrName))
            {
                return false;
            }

            if (DefinitionsById.TryGetValue(idOrName, out definition))
            {
                return definition != null;
            }

            if (DefinitionsByName.TryGetValue(idOrName, out definition))
            {
                return definition != null;
            }

            return false;
        }

        internal static string ResolveId(EnemyDefinition definition)
        {
            if (definition == null)
            {
                return string.Empty;
            }

            var id = NormalizeId(definition);
            Register(definition);
            return id;
        }

        private static string NormalizeId(EnemyDefinition definition)
        {
            if (definition == null)
            {
                return string.Empty;
            }

            if (!string.IsNullOrEmpty(definition.Id))
            {
                return definition.Id;
            }

            return definition.name ?? string.Empty;
        }
    }
}