using System;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using xCommons.Extensions;
using xDataService.Constants;
using xDataService.Db;
using xExceptions.Constants;

namespace xDataService.Helpers
{
    public static class XDataServiceHelper
    {
        /// <summary>
        /// Register DbContext ...
        /// </summary>
        /// <param name="source"></param>
        /// <param name="provider"></param>
        /// <param name="connectionString"></param>
        /// <param name="lifetime"></param>
        /// <param name="optionsBuilder"></param>
        /// <typeparam name="TContext"></typeparam>
        public static void AddXDbContext<TContext>(
            IServiceCollection source,
            XDbProviders provider,
            string connectionString,
            ServiceLifetime lifetime = ServiceLifetime.Scoped,
            Action<dynamic> optionsBuilder = null
        )
        where TContext : XDbContext
        {
            //
            if (provider == XDbProviders.None)
            {
                //
                // Log("Invalid Db Provider ...");
                XException.InvalidArgs.Throw();
            }

            //
            switch (provider)
            {
                //
                // MySQL ...
                case XDbProviders.MySQL:
                    //
                    source.AddDbContext<TContext>(cfg =>
                    {
                        cfg.UseMySQL(connectionString, optionsBuilder);
                    }, lifetime);
                    break;

                //
                // SQLite ...
                case XDbProviders.SQLite:
                    //
                    source.AddDbContext<TContext>(cfg =>
                    {
                        cfg.UseSqlite(connectionString, optionsBuilder);
                    }, lifetime);
                    break;

                //
                // SQLServer ...
                case XDbProviders.SQLServer:
                    //
                    source.AddDbContext<TContext>(cfg =>
                    {
                        cfg.UseSqlServer(connectionString, optionsBuilder);
                    }, lifetime);
                    break;

                //
                case XDbProviders.MongoDB:
                    // There is notRequired to Register DBConext forMongo DB ...
                    break;
            }
        }
    }
}