survey-webapp/SurveyBackend/SurveyBackend.API/Program.cs

using System.Text.Json.Serialization;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using Microsoft.OpenApi.Models;
using SurveyBackend.Contexts;
using SurveyBackend.Core.Contexts;
using SurveyBackend.Core.Repositories;
using SurveyBackend.Core.Services;
using SurveyBackend.Infrastructure.Data;
using SurveyBackend.Infrastructure.Repositories;
using SurveyBackend.Middlewares;
using SurveyBackend.Services;
using SurveyBackend.Services.Services;
using SurveyLib.Core.Repositories;
using SurveyLib.Core.Services;
using SurveyLib.Infrastructure.EFCore.Data;
using SurveyLib.Infrastructure.EFCore.Repositories;

namespace SurveyBackend;

public class Program
{
    public static void Main(string[] args)
    {
        var builder = WebApplication.CreateBuilder(args);

        AuthOptions.MakeOptions(builder.Configuration, Environment.GetEnvironmentVariable("JWT_SECRET_KEY"));

        builder.Services.AddAuthorization();

        builder.Services.AddDbContext<ApplicationDbContext>(options =>
            options.UseSqlite(builder.Configuration.GetConnectionString("DefaultConnection")));

        builder.Services.AddScoped<SurveyDbContext>(provider => provider.GetRequiredService<ApplicationDbContext>());

        builder.Services.AddHttpContextAccessor();

        builder.Services.AddScoped<IUserContext, UserContext>();

        builder.Services.AddScoped<IUserRepository, UserRepository>();
        builder.Services.AddScoped<IUserService, UserService>();

        builder.Services.AddScoped<IPasswordHasher, Sha256PasswordHasher>();

        builder.Services.AddScoped<IAuthorizationService, AuthorizationService>();

        builder.Services.AddScoped<ISurveyRepository, SurveyRepository>();
        builder.Services.AddScoped<IQuestionRepository, QuestionRepository>();

        builder.Services.AddScoped<ISurveyService, SurveyService>();
        builder.Services.AddScoped<IQuestionService, QuestionService>();


        builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
            .AddJwtBearer(options =>
            {
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuer = true,
                    ValidateAudience = true,
                    ValidateLifetime = true,
                    ValidateIssuerSigningKey = true,
                    ValidIssuer = AuthOptions.Issuer,
                    ValidAudience = AuthOptions.Audience,
                    IssuerSigningKey = AuthOptions.SymmetricSecurityKey
                };
            });

        builder.Services.AddControllers().AddJsonOptions(opts => { opts.JsonSerializerOptions.DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull; });
        
        builder.Services.AddEndpointsApiExplorer();
        builder.Services.AddSwaggerGen(c =>
        {
            c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme
            {
                Scheme = "bearer",
                BearerFormat = "JWT",
                In = ParameterLocation.Header,
                Description = "JWT Authorization header using the Bearer scheme.",
                Name = "Authorization",
                Type = SecuritySchemeType.ApiKey
            });
            c.AddSecurityRequirement(new OpenApiSecurityRequirement
            {
                {
                    new OpenApiSecurityScheme
                    {
                        Reference = new OpenApiReference
                        {
                            Type = ReferenceType.SecurityScheme,
                            Id = JwtBearerDefaults.AuthenticationScheme
                        }
                    },
                    Array.Empty<string>()
                }
            });
        });

        var app = builder.Build();

        if (app.Environment.IsDevelopment())
        {
            app.UseSwagger();
            app.UseSwaggerUI();
        }

        app.UseMiddleware<ExceptionsMiddleware>();

        app.UseAuthentication();
        app.UseAuthorization();

        app.MapControllers();

        app.Run();
    }
}