using System;
using System.Diagnostics;

using Fab2ApprovalSystem.Models;

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Hosting.WindowsServices;
using Microsoft.Extensions.Logging;

namespace Fab2ApprovalMKLink;

public class Program {

    public static int Main(string[] args) {
        ILogger<Program>? logger = null;
        WebApplicationBuilder webApplicationBuilder = WebApplication.CreateBuilder(args);
        _ = webApplicationBuilder.Configuration.AddUserSecrets<Program>();
        AppSettings appSettings = AppSettings.Get(webApplicationBuilder.Configuration);
        if (string.IsNullOrEmpty(appSettings.Company))
            throw new Exception("Company name must have a value!");
        if (string.IsNullOrEmpty(appSettings.WorkingDirectoryName))
            throw new Exception("Working directory name must have a value!");
        try {
            _ = webApplicationBuilder.Services.Configure<ApiBehaviorOptions>(options => options.SuppressModelStateInvalidFilter = true);
            _ = webApplicationBuilder.Services.AddControllers();
            _ = webApplicationBuilder.Services.AddDistributedMemoryCache();
            _ = webApplicationBuilder.Services.AddHttpClient();
            _ = webApplicationBuilder.Services.AddSingleton(_ => appSettings);
            _ = webApplicationBuilder.Services.AddSwaggerGen();
            _ = webApplicationBuilder.Services.AddSession(sessionOptions => {
                sessionOptions.IdleTimeout = TimeSpan.FromSeconds(2000);
                sessionOptions.Cookie.HttpOnly = true;
                sessionOptions.Cookie.IsEssential = true;
            }
            );
            if (WindowsServiceHelpers.IsWindowsService()) {
                _ = webApplicationBuilder.Services.AddSingleton<IHostLifetime, WindowsServiceLifetime>();
                _ = webApplicationBuilder.Logging.AddEventLog(settings => {
#pragma warning disable CA1416
                    if (string.IsNullOrEmpty(settings.SourceName))
                        settings.SourceName = webApplicationBuilder.Environment.ApplicationName;
#pragma warning restore
                });
            }
            WebApplication webApplication = webApplicationBuilder.Build();
            if (Debugger.IsAttached)
                webApplication.Services.GetRequiredService<AppSettings>();
            logger = webApplication.Services.GetRequiredService<ILogger<Program>>();
            _ = webApplication.UseCors(corsPolicyBuilder => corsPolicyBuilder.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod());
            if (!webApplicationBuilder.Environment.IsDevelopment()) {
                _ = webApplication.UseExceptionHandler("/Error");
                _ = webApplication.UseHttpsRedirection();
                _ = webApplication.UseHsts();
            } else {
                if (string.IsNullOrEmpty(appSettings.URLs)) {
                    Environment.ExitCode = -1;
                    webApplication.Lifetime.StopApplication();
                }
                _ = webApplication.UseSwagger();
                _ = webApplication.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "Server V1"));
            }
            _ = webApplication.UseSession();
            _ = webApplication.MapControllers();
            logger.LogInformation("Starting Web Application");
            webApplication.Run();
            return 0;
        } catch (Exception ex) {
            try { logger?.LogCritical(ex, "Host terminated unexpectedly"); } catch (Exception) { }
            throw;
        }
    }

}