using Microsoft.AspNet.Builder;
using Microsoft.AspNet.Hosting;
using Microsoft.AspNet.SpaServices.Webpack;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.PlatformAbstractions;

namespace ReactExample
{
    public class Startup
    {
        public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
        {
            // Setup configuration sources.
            var builder = new ConfigurationBuilder()
                .SetBasePath(appEnv.ApplicationBasePath)
                .AddJsonFile("appsettings.json")
                .AddEnvironmentVariables();
            Configuration = builder.Build();
        }

        public IConfigurationRoot Configuration { get; set; }

        // This method gets called by the runtime.
        public void ConfigureServices(IServiceCollection services)
        {
            // Add MVC services to the services container.
            services.AddMvc();
        }

        // Configure is called after ConfigureServices is called.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.MinimumLevel = LogLevel.Warning;
            loggerFactory.AddConsole();
            loggerFactory.AddDebug();

            // Configure the HTTP request pipeline.

            // Add the platform handler to the request pipeline.
            app.UseIISPlatformHandler();

            // Add the following to the request pipeline only in development environment.
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                // Add Error handling middleware which catches all application specific errors and
                // send the request to the following path or controller action.
                app.UseExceptionHandler("/Home/Error");
            }
            
            // In dev mode, the JS/TS/etc is compiled and served dynamically and supports hot replacement.
            // In production, we assume you've used webpack to emit the prebuilt content to disk.
            if (env.IsDevelopment()) {
                app.UseWebpackDevMiddleware(new WebpackDevMiddlewareOptions {
                    HotModuleReplacement = true,
                    ReactHotModuleReplacement = true
                });
            }

            // Add static files to the request pipeline.
            app.UseStaticFiles();

            // Add MVC to the request pipeline.
            app.UseMvc(routes =>
            {
                routes.MapSpaFallbackRoute(
                    name: "default",
                    defaults: new { controller="Home", action = "Index" });
            });
        }
    }
}