complete jwt authentication in csharp

main.cs
Install-Package Microsoft.AspNetCore.Authentication.JwtBearer -Version <version number>
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main.cs
services.AddAuthentication(options =>
{
    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer(options =>
{
    options.Authority = "https://your-auth0-domain.auth0.com/";
    options.Audience = "https://your-auth0-api.com/";
});
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main.cs
[Authorize]
[ApiController]
[Route("[controller]")]
public class ApiController : ControllerBase
{
    // Controller methods
}
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main.cs
var tokenHandler = new JwtSecurityTokenHandler();
var key = Encoding.ASCII.GetBytes("your_secret_key_here");

var tokenDescriptor = new SecurityTokenDescriptor
{
    Subject = new ClaimsIdentity(new Claim[]
    {
        new Claim(ClaimTypes.Name, "John Doe"),
        new Claim(ClaimTypes.Email, "johndoe@example.com")
    }),
    Expires = DateTime.UtcNow.AddHours(1),
    SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
};

var token = tokenHandler.CreateToken(tokenDescriptor);
var tokenString = tokenHandler.WriteToken(token);
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main.cs
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", /* Your JWT token here */);
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