using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Session;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Core.Main;
using System.Runtime.InteropServices;
using System.Diagnostics;

namespace Monitor {
  public class Startup {
    PTMagicConfiguration systemConfiguration = null;

    public Startup() {
    }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services) {
      string monitorBasePath = Directory.GetCurrentDirectory();
      if (!System.IO.File.Exists(monitorBasePath + Path.DirectorySeparatorChar + "appsettings.json")) {
        monitorBasePath += Path.DirectorySeparatorChar + "Monitor";
      }

      IConfiguration config = new ConfigurationBuilder()
                .SetBasePath(monitorBasePath)
                .AddJsonFile("appsettings.json", false)
                .Build();

      string ptMagicBasePath = config.GetValue<string>("PTMagicBasePath");

      if (!ptMagicBasePath.EndsWith(Path.DirectorySeparatorChar)) {
        ptMagicBasePath += Path.DirectorySeparatorChar;
      }


      try {
        systemConfiguration = new PTMagicConfiguration(ptMagicBasePath);
      } catch (Exception ex) {
        throw ex;
      }

      services.AddMvc();
      services.AddAntiforgery(o => o.HeaderName = "XSRF-TOKEN");
      services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
      services.AddDistributedMemoryCache();
      services.AddSession(options => {
        options.IdleTimeout = TimeSpan.FromSeconds(900);
        options.Cookie.HttpOnly = true;
        options.Cookie.Name = "PTMagicMonitor" + systemConfiguration.GeneralSettings.Monitor.Port.ToString();
      });
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env) {
      app.UseStaticFiles();
      if (env.IsDevelopment()) {
        app.UseBrowserLink();
        app.UseDeveloperExceptionPage();
        //app.UseExceptionHandler("/Error");
      } else {
        app.UseExceptionHandler("/Error");
      }
      app.UseSession();
      app.UseMvc();
      if (systemConfiguration.GeneralSettings.Monitor.OpenBrowserOnStart) OpenBrowser("http://localhost:" + systemConfiguration.GeneralSettings.Monitor.Port.ToString());
    }

    public static void OpenBrowser(string url) {
      if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
        Process.Start(new ProcessStartInfo("cmd", $"/c start {url}")); // Works ok on windows
      } else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) {
        Process.Start("xdg-open", url);  // Works ok on linux
      } else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) {
        Process.Start("open", url); // Not tested
      }
    }
  }
}