FISLib_Old/FISSDK/FISSDKDemoV2/Manager/DatabaseManager.cs

using FISSDKDemoV2.Database.IRespository;
using System;
using System.Collections.Generic;

namespace FISSDKDemoV2.Manager
{
    internal class DataBaseManager
    {
        private static Dictionary<Type, IDatabaseService> _services = new Dictionary<Type, IDatabaseService>();

        /// <summary>
        /// Register a service into the container.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="service"></param>
        /// <exception cref="InvalidOperationException"></exception>
        public static void RegisterService<T>(IDatabaseService service)
        {
            var type = typeof(T);
            if (_services.ContainsKey(type))
            {
                throw new InvalidOperationException($"Key:{type.Name} already exists.");
            }
            _services.Add(type, service);
        }

        /// <summary>
        /// Get the service from the container.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        /// <exception cref="KeyNotFoundException"></exception>
        public static T GetService<T>()
        {
            var type = typeof(T);
            if (_services.ContainsKey(type))
            {
                return (T)_services[type];
            }
            throw new KeyNotFoundException($"Can not find the key:{type.Name}");
        }
    }
}