AMessanger-Server/AMessanger.Application/Services/JwtService.cs

using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;
using AMessanger.Application.Settings;
using AMessanger.Core.Abstraction;
using AMessanger.Core.Models;
using Microsoft.Extensions.Options;
using Microsoft.IdentityModel.Tokens;

namespace AMessanger.Application.Services;

public class JwtService(IOptions<JwtSettings> options) : IJwtService
{
    private readonly JwtSettings _settings = options.Value;

    public string GenerateToken(User user)
    {
        var claims = new[]
        {
            new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
            new Claim(ClaimTypes.Name, user.Name)
        };

        var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_settings.Key));

        var creditnails = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);

        var token = new JwtSecurityToken(
            issuer: _settings.Issuer,
            audience: _settings.Audience,
            claims: claims,
            expires: DateTime.UtcNow.AddMinutes(_settings.ExpiresMinutes),
            signingCredentials: creditnails
        );

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