using System;
using System.IO;
using System.Reflection;
using System.Threading.Tasks;
using ErsatzTV.Core;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Serilog;

namespace ErsatzTV
{
    public class Program
    {
        private static IConfiguration Configuration { get; } = new ConfigurationBuilder()
            .SetBasePath(Path.GetDirectoryName(Assembly.GetEntryAssembly().Location))
            .AddJsonFile("appsettings.json", false, true)
            .AddJsonFile(
                $"appsettings.{Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") ?? "Production"}.json",
                true)
            .AddEnvironmentVariables()
            .Build();

        public static async Task<int> Main(string[] args)
        {
            Log.Logger = new LoggerConfiguration()
                .ReadFrom.Configuration(Configuration)
                .Enrich.FromLogContext()
                .WriteTo.SQLite(FileSystemLayout.LogDatabasePath, retentionPeriod: TimeSpan.FromDays(1))
                .CreateLogger();

            try
            {
                await CreateHostBuilder(args).Build().RunAsync();
                return 0;
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "Host terminated unexpectedly");
                return 1;
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }

        private static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(
                    webBuilder => webBuilder.UseStartup<Startup>()
                        .UseConfiguration(Configuration)
                        .UseKestrel(options => options.AddServerHeader = false))
                .UseSerilog();
    }
}