use dapper in a few places (#29)

* use dapper in a few places

* use single dapper queries

ErsatzTV/Startup.cs

@@ -1,7 +1,9 @@
 using System;
+using System.Data;
 using System.IO;
 using System.Reflection;
 using System.Threading.Channels;
+using Dapper;
 using ErsatzTV.Application;
 using ErsatzTV.Application.Channels.Queries;
 using ErsatzTV.Core;
@@ -27,6 +29,7 @@ using FluentValidation.AspNetCore;
 using MediatR;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.Data.Sqlite;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -109,17 +112,23 @@ namespace ErsatzTV
             // string xmltvPath = Path.Combine(appDataFolder, "xmltv.xml");
             // Log.Logger.Information("XMLTV is at {XmltvPath}", xmltvPath);
 
+            var connectionString = $"Data Source={FileSystemLayout.DatabasePath}";
+            
             services.AddDbContext<TvContext>(
                 options => options.UseSqlite(
-                    $"Data Source={FileSystemLayout.DatabasePath}",
+                    connectionString,
                     o =>
                     {
                         o.UseQuerySplittingBehavior(QuerySplittingBehavior.SplitQuery);
                         o.MigrationsAssembly("ErsatzTV.Infrastructure");
                     }));
 
-            services.AddDbContext<LogContext>(
-                options => options.UseSqlite($"Data Source={FileSystemLayout.LogDatabasePath}"));
+            services.AddDbContext<LogContext>(options => options.UseSqlite(connectionString));
+
+            services.AddTransient<IDbConnection>(_ => new SqliteConnection(connectionString));
+            SqlMapper.AddTypeHandler(new DateTimeOffsetHandler());
+            SqlMapper.AddTypeHandler(new GuidHandler());
+            SqlMapper.AddTypeHandler(new TimeSpanHandler());
 
             services.AddMediatR(typeof(GetAllChannels).Assembly);