using CalendarReminder.Domain.Entities;
using Microsoft.IdentityModel.Tokens;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Text;

namespace CalendarReminder.Api.Services;

public class TokenService
{
    private readonly IConfiguration _config;

    public TokenService(IConfiguration config)
    {
        _config = config;
    }

    public string GenerateToken(User user)
    {
        var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_config["Jwt:Secret"]!));
        var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);

        var claims = new[]
        {
            new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
            new Claim(ClaimTypes.Name, user.Username),
            new Claim(ClaimTypes.Email, user.Email)
        };

        var token = new JwtSecurityToken(
            issuer: _config["Jwt:Issuer"],
            audience: _config["Jwt:Audience"],
            claims: claims,
            expires: DateTime.UtcNow.AddDays(7),
            signingCredentials: creds);

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