iot/projects/Infrastructure/Web/Hosting/IWebHostBuilderExtensions.cs

using System;
using System.Collections.Generic;
using System.IO;
using Infrastructure.Configuration;
using Infrastructure.Extensions;
using Microsoft.AspNetCore.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Serilog;

namespace Infrastructure.Web.Hosting
{
    public static class IWebHostBuilderExtensions
    {
        public static void Run<TStartup>(this IWebHostBuilder hostBuilder, List<EFConfigurationValue> configValues = null, int? fileSize = null) where TStartup : class
        {
            try
            {
                hostBuilder
                    .Configuration<TStartup>(configValues, fileSize)
                    .Build()
                    .Run();
            }
            catch (Exception ex)
            {
                ex.PrintStack();
                Log.Fatal(ex.Message);
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }

        public static IConfigurationBuilder Build(this IConfigurationBuilder builder, List<EFConfigurationValue> configValues)
        {
            return builder.SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddEFConfiguration(options => options.UseSqlite("Data Source=configuration.db"), configValues ?? new List<EFConfigurationValue>())
                .AddEnvironmentVariables();
        }

        public static IWebHostBuilder Configuration<TStartup>(this IWebHostBuilder hostBuilder, List<EFConfigurationValue> configValues = null, int? fileSize = null) where TStartup : class
        {
            var configuration = new ConfigurationBuilder().Build(configValues).Build();
            Log.Logger = new LoggerConfiguration()
                .ReadFrom.Configuration(configuration)
                .WriteTo.Console()
#if DEBUG
                .WriteTo.File("logs/log.txt", rollOnFileSizeLimit: true, fileSizeLimitBytes: fileSize ?? 100 * 1024 * 1024, rollingInterval: RollingInterval.Infinite)
#else
                .WriteTo.File("logs/log.txt", fileSizeLimitBytes: fileSize ?? 100 * 1024 * 1024)
#endif
                .CreateLogger();
            hostBuilder
                .UseConfiguration(configuration)
                .UseKestrel()
                .UseSerilog()
                .ConfigureAppConfiguration((hostingContext, config) =>
                {
                    config.Build(configValues);
                })
                .UseStartup<TStartup>();
            return hostBuilder;
        }
    }
}