LocationCalculator/API/POCDistance/Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;
using POCDistance.DAL;
using POCDistance.Models;
using POCDistance.Service;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace POCDistance
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors(options =>
            {
                options.AddPolicy(SecurityPolicy.SiteCorsPolicy, builder =>
                {
                    builder.AllowAnyHeader();
                    builder.AllowAnyMethod();
                    builder.AllowAnyOrigin();
                });
            });

            //Added for session state
            services.AddDistributedMemoryCache();
            services.AddSession(options =>
            {
                options.IdleTimeout = TimeSpan.FromMinutes(10);
            });

            services.AddControllers();
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "POCDistance", Version = "v1" });
            });

            //DI Implementation
            services.AddHttpContextAccessor();
            services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            services.TryAddScoped<IDataSourceAdapter, DataSourceAdapter>();
            services.TryAddScoped<ILocationService, LocationService>();
        }

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

            app.UseRouting();
            // UseCors with CorsPolicy defined
            app.UseCors(SecurityPolicy.SiteCorsPolicy);

            app.UseAuthorization();

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

        }
    }
}