Generate JWT Token - bondaigames/ASP.NET-Core-Documentation GitHub Wiki

using Services.AuthAPI.Models;

namespace Services.AuthAPI.Service.IService
{
    public interface IJwtTokenGenerator
    {
        string GenerateToken(ApplicationUser applicationUser);
    }
}

builder.Services.AddControllers();
builder.Services.AddScoped<IJwtTokenGenerator, JwtTokenGenerator>();

using Services.AuthAPI.Models;
using Services.AuthAPI.Service.IService;
using Microsoft.IdentityModel.Tokens;
using System;
using System.Data;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;

namespace Services.AuthAPI.Service
{
    public class JwtTokenGenerator : IJwtTokenGenerator
    {
        private readonly JwtOptions _jwtOptions;

        public JwtTokenGenerator(JwtOptions jwtOptions)
        {
            _jwtOptions = jwtOptions;
        }

        public string GenerateToken(ApplicationUser applicationUser)
        {
            var tokenHandler = new JwtSecurityTokenHandler();

            var key = Encoding.ASCII.GetBytes(_jwtOptions.Secret);

            var claimList = new List<Claim>
            {
                new Claim(JwtRegisteredClaimNames.Email, applicationUser.Email),
                new Claim(JwtRegisteredClaimNames.Sub, applicationUser.Id),
                new Claim(JwtRegisteredClaimNames.Name, applicationUser.UserName)
            };

            var tokenDescriptor = new SecurityTokenDescriptor
            {
                Audience = _jwtOptions.Audience,
                Issuer = _jwtOptions.Issuer,
                Subject = new ClaimsIdentity(claimList),
                Expires = DateTime.UtcNow.AddDays(7),
                SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
            };

            var token = tokenHandler.CreateToken(tokenDescriptor);
            return tokenHandler.WriteToken(token);
        }
    }
}