mws.backend.dotnet/infrastructure/Authentication/JwtTokenService.cs

using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;
using Microsoft.IdentityModel.Tokens;
using mws.backend.dotnet.application.Auth;

namespace mws.backend.dotnet.infrastructure.Authentication;

public class JwtTokenService(JwtOptions options) : ITokenService
{
    public string CreateToken(Guid userId, string username)
    {
        var claims = new List<Claim>
        {
            new(JwtRegisteredClaimNames.Sub, userId.ToString()),
            new(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
            new(ClaimTypes.Name, username),
        };

        var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(options.Secret));
        var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);

        var token = new JwtSecurityToken(
            issuer: options.Issuer,
            audience: options.Audience,
            claims: claims,
            expires: DateTime.UtcNow.Add(options.Expiration),
            signingCredentials: creds);

        return new JwtSecurityTokenHandler().WriteToken(token);
    }
}