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using Microsoft.AspNetCore.Mvc;
using Microsoft.IdentityModel.Tokens;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;
using System.Security.Cryptography;

namespace HyperBooru.Controllers;

[ApiController]
[Route("/api/auth")]
public class ApiLoginController : Controller {
    private readonly RSA rsa;

    public ApiLoginController(RSA rsa) =>
        this.rsa = rsa;

    [HttpPost]
    public IActionResult Login([FromBody] LoginRequest request) {
        var claims = new[] {
            new Claim(ClaimTypes.Name, request.Username),
            // TODO: Populate with the user's actual GUID
            new Claim("uid", Guid.Empty.ToString().ToLower()),
            new Claim("nsfw", request.NsfwClaim.ToString().ToLower())
        };

        var creds = new SigningCredentials(
            new RsaSecurityKey(rsa),
            SecurityAlgorithms.RsaSha256);

        var token = new JwtSecurityToken(
            claims: claims,
            expires: DateTime.UtcNow.AddDays(30),
            signingCredentials: creds);

        var jwt = new JwtSecurityTokenHandler().WriteToken(token);

        return Ok(new { token = jwt });
    }

    public record LoginRequest {
        public required string Username { get; set; }
        public required string Password { get; set; }

        public bool NsfwClaim { get; set; } = false;
    }
}