Program.cs

using HospitalManagementSystemAPI.Data;
using HospitalManagementSystemAPI.Services;
using Microsoft.EntityFrameworkCore;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
builder.Services.AddOpenApi();

// Configure Swagger
builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

builder.Services.AddDbContext<HospitalContext>(options =>
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection")));

// Register application services for dependency injection.
builder.Services.AddScoped<PatientService>();
builder.Services.AddScoped<DoctorService>();
builder.Services.AddScoped<AppointmentService>();
builder.Services.AddScoped<PrescriptionService>();
builder.Services.AddScoped<MedicationService>();
builder.Services.AddScoped<BillingService>();
builder.Services.AddScoped<AuthService>();

var stringSK = "mySecretKey";

SecurityKey mySK = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(stringSK));

builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
            .AddJwtBearer(opt =>
            {
                opt.TokenValidationParameters = new Microsoft.IdentityModel.Tokens.TokenValidationParameters
                {
                    ValidateLifetime = true,
                    ValidateAudience = false,
                    ValidateIssuer = false,
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = mySK
                };

            });

var app = builder.Build();

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

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();