RunnersMeet/src/RunnersMeet.Server/AppServer.cs

using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using RunnersMeet.Server.Persistence;

namespace RunnersMeet.Server;

public class AppServer
{
	public void Start(string[] args)
	{
		var builder = WebApplication.CreateBuilder(args);

		ConfigureServices(builder.Services, builder.Configuration);
		builder.Services.AddControllers().AddJsonOptions(options =>
		{
			options.JsonSerializerOptions.Converters.Add(new ObjectIdConverter());
		});
		// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
		builder.Services.AddEndpointsApiExplorer();
		builder.Services.AddSwaggerGen();

		builder.Services.AddCors(options =>
		{
			options.AddDefaultPolicy(policy  =>
			{
				policy.WithOrigins("http://localhost:4200");
				policy.WithHeaders("Authorization");
			});
		});

		var authOptions = new AuthOptions();
		builder.Configuration.GetSection("Auth").Bind(authOptions);
		builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
			.AddJwtBearer(options =>
			{
				options.Authority = authOptions.Authority;
				options.TokenValidationParameters = new TokenValidationParameters
				{
					ValidIssuer = authOptions.Authority,
					ValidAudience = authOptions.Audience
				};
			});

		builder.Services.AddAuthorization(authorizationOptions =>
		{
			foreach (var policyPair in authOptions.PolicyClaims)
			{
				authorizationOptions.AddPolicy(policyPair.Key, policyBuilder => policyBuilder.RequireClaim("permissions", policyPair.Value));
			}
		});

		var app = builder.Build();

		// Configure the HTTP request pipeline.
		if (app.Environment.IsDevelopment())
		{
			app.UseSwagger();
			app.UseSwaggerUI();
		}

		app.UseHttpsRedirection();
		app.UseCors();
		app.UseAuthorization();

		app.MapControllers();

		app.Run();
	}

	private void ConfigureServices(IServiceCollection services, IConfigurationRoot config)
	{
		services.AddSingleton<IDatabase, Database>();
		services.AddSingleton<IFileStorage, FileStorage>();
		services.AddScoped<QueryFactory, QueryFactory>();

		services.Configure<PersistenceOptions>(config.GetSection(PersistenceOptions.Persistence));
		services.AddTransient<IPersistenceOptions, PersistenceOptionsAccessor>();
	}
}