using System;
using System.IO;
using System.Reflection;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;

namespace NameSpace
{
    /// <summary>
    /// Startup Webservice and configure the Kestrel
    /// </summary>
    public class Startup
    {
        /// <summary>
        /// Kestrel configuration
        /// </summary>
        // ReSharper disable once MemberCanBePrivate.Global
        // ReSharper disable once UnusedAutoPropertyAccessor.Global
        public IConfiguration Configuration { get; }
        
        
        // ReSharper disable once CommentTypo
        /// <summary>
        /// OwnConfiguration-Section im JSON-Configuration (appsettings.json)
        /// </summary>
        // ReSharper disable once MemberCanBePrivate.Global
        public static OwnConfiguration OwnConfiguration { get; set; }
        
        
        /// <summary>
        /// ctor
        /// </summary>
        /// <param name="configuration"></param>
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
            OwnConfiguration = Configuration.GetSection("OwnConfiguration").Get<OwnConfiguration>();
        }
        
        
        /// <summary>
        /// This method gets called by the runtime. Use this method to add services to the container. 
        /// </summary>
        /// <param name="services"></param>
        // ReSharper disable once CA1822
        public void ConfigureServices(IServiceCollection services)
        {
            
            //provide the MVC Pattern to generate Views from Views/<Controller>/<Method>.cshtml
            //see: Views/Setup/Index.cshtml
            services.AddControllersWithViews(options =>
            {
                //add singleton SetupActionFilter
                //init logger for SetupActionFilter and register to global logging system (console)
                var loggerFactory = LoggerFactory.Create(builder =>
                {
                    builder
                        .AddConsole();
                        //.AddEventLog();
                });
                ILogger<SetupActionFilter> logger = loggerFactory.CreateLogger<SetupActionFilter>();
                //options.Filters.Add(new SetupActionFilter(OwnConfiguration, new Logger<SetupActionFilter>(new LoggerFactory())));
                options.Filters.Add(new SetupActionFilter(OwnConfiguration, logger));

                //Every request has own instance from SetupActionFilter
                //options.Filters.Add(typeof(SetupActionFilter));
            });
            
            
            //todo: AddHealthChecks
            //services.AddHealthChecks()
            
            //add swagger service
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo {Title = "APP", Version = "v1"});
                // Set the comments path for the Swagger JSON and UI.
                
                //generate documentation for swagger-UI from the Code-XML-Documentation /// <...>   
                var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
                var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
                c.IncludeXmlComments(xmlPath);
                
            });
            services.AddMvc();
            
        }

        
        /// <summary>
        /// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        /// </summary>
        /// <param name="app"></param>
        /// <param name="env"></param>
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env )//, ILoggerFactory loggerFactory)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "APP v1"));
            }
            
            app.UseHttpsRedirection();

            app.UseStaticFiles();
            
            app.UseRouting();

            app.UseAuthorization();
            
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }
}