Program.cs

using Microsoft.EntityFrameworkCore;
using UserMicroservice.Models;
using UserMicroservice.Services;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using System.Text;


var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

// Configure your DbContext and MySQL connection here
// This is also dependancy injection BTW...
builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseMySql(builder.Configuration.GetConnectionString("DefaultConnection"),
    new MariaDbServerVersion(new Version(10, 4, 20))));
//    new MySqlServerVersion(new Version(8, 0, 21))));

// Configuration for the connection string
builder.Configuration.SetBasePath(Directory.GetCurrentDirectory())
    .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
    .AddEnvironmentVariables();

builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(options =>
    {
        options.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuerSigningKey = true,
            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(builder.Configuration["Jwt:Key"])),
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidIssuer = builder.Configuration["Jwt:Issuer"],
            ValidAudience = builder.Configuration["Jwt:Audience"]
        };
    });

// Add dependecy injections
builder.Services.AddScoped<IAuthService, AuthService>();
builder.Services.AddScoped<IUserService, UserService>();

var app = builder.Build();

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

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