Program.cs

using Backend.Data;
using Microsoft.EntityFrameworkCore;
using Backend.Interfaces;
using Backend.Repositories;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using System.Text;
using Microsoft.OpenApi.Models;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddControllers();
builder.Services.AddAutoMapper(AppDomain.CurrentDomain.GetAssemblies());
builder.Services.AddScoped<ICategoryRepository, CategoryRepository>();
builder.Services.AddScoped<ISubCategoryRepository, SubCategoryRepository>();
builder.Services.AddScoped<ITaskRepository, TaskRepository>();
builder.Services.AddScoped<IUserRepository, UserRepository>();
builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(options =>
    {
        options.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidateIssuerSigningKey = true,
            ValidIssuer = builder.Configuration["Jwt:Issuer"],
            ValidAudience = builder.Configuration["Jwt:Audience"],
            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(builder.Configuration["Jwt:Key"]))
        };
    });

builder.Services.AddMvc();

var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
builder.Services.AddDbContext<DataContext>(options => options.UseSqlServer(connectionString));
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(setup =>
{
    // Include 'SecurityScheme' to use JWT Authentication
    var jwtSecurityScheme = new OpenApiSecurityScheme
    {
        BearerFormat = "JWT",
        Name = "JWT Authentication",
        In = ParameterLocation.Header,
        Type = SecuritySchemeType.Http,
        Scheme = JwtBearerDefaults.AuthenticationScheme,
        Description = "Put **_ONLY_** your JWT Bearer token on textbox below!",

        Reference = new OpenApiReference
        {
            Id = JwtBearerDefaults.AuthenticationScheme,
            Type = ReferenceType.SecurityScheme
        }
    };

    setup.AddSecurityDefinition(jwtSecurityScheme.Reference.Id, jwtSecurityScheme);

    setup.AddSecurityRequirement(new OpenApiSecurityRequirement
    {
        { jwtSecurityScheme, Array.Empty<string>() }
    });

}
);

var app = builder.Build();

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


app.MapControllers();
app.UseHttpsRedirection();
app.UseAuthentication();
app.UseAuthorization();

app.Run();