using System.Text;
using Dlhis.Sys.Identity.Request;
using Kurisu.AspNetCore.Authentication.Options;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Options;
using Newtonsoft.Json.Linq;

namespace Dlhis.Sys.Identity.Controllers;

/// <summary>
/// OAuth2认证
/// </summary>
[Route("api/[controller]")]
[ApiController]
public class OAuth2Controller : ControllerBase
{
    private readonly IHttpClientFactory _httpClientFactory;
    private readonly IOptions<IdentityServerOptions> _identityServerOption;

    public OAuth2Controller(IHttpClientFactory httpClientFactory, IOptions<IdentityServerOptions> identityServerOption)
    {
        _httpClientFactory = httpClientFactory;
        _identityServerOption = identityServerOption;
    }

    [HttpPost("clientgrant")]
    public async Task<object> ClientGrant(ClientGrantRequest request)
    {
        var authority = _identityServerOption.Value.Authority;

        var httpClient = _httpClientFactory.CreateClient();

        var content = new StringContent($"grant_type=client_credentials&client_id={request.ClientId}&client_secret={request.ClientSecret}&scope={request.Scope}", Encoding.UTF8, "application/x-www-form-urlencoded");
        var response = await httpClient.PostAsync($"{authority}/connect/token", content);
        var result = await response.Content.ReadAsStringAsync();
        return JObject.Parse(result);
    }
}