using Confluent.Kafka;
using Confluent.Kafka.Admin;
using Microsoft.AspNetCore.Mvc;
using Microsoft.OpenApi.Extensions;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using TelpoKafkaConsole.Model;
using TelpoKafkaConsole.Service;
using TelpoKafkaConsole.WebApi.Controllers.Api;
using TelpoKafkaConsole.WebApi.Model.Request;

// For more information on enabling Web API for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860

namespace TelpoKafkaConsole.WebApi.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class ScramCredentialsUserController : ControllerBase
    {
        private readonly KafkaAdminService _servicekafkaAdmin;   
        public ScramCredentialsUserController(KafkaAdminService kafkaAdminService) 
        {
            _servicekafkaAdmin = kafkaAdminService;
        }
        // GET: api/<ScramCredentialsUserController>
        [HttpGet]
        public async Task<ApiResponse<object>> Get()
        {
            var usersScram = await _servicekafkaAdmin.DescribeUserScramCredentialsAsync(new List<string>());
            var users = usersScram
                .Select(i => new {i.User, ScramCredentialInfos=i.ScramCredentialInfos
                .Select(s=>new { Mechanism=s.Mechanism.GetDisplayName(),s.Iterations }) })
                .Where(i=>!i.User.Equals("superuser"));
            return ApiResponse<object>.Success(users);
        }

        // GET api/<ScramCredentialsUserController>/5
        [HttpGet("{username}")]
        public async Task<ApiResponse<object>> GetAsync(string username)
        {
            var users = new List<string>
            {
                username
            };
            var usersScram = await _servicekafkaAdmin.DescribeUserScramCredentialsAsync(users);



            var firstUserScram = usersScram.FirstOrDefault();

            var user = new
            {
                firstUserScram?.User,
                ScramCredentialInfos = firstUserScram?.ScramCredentialInfos
                    .Select(i => new
                    {
                        Mechanism = i.Mechanism.GetDisplayName(),
                        i.Iterations
                    })
            };
            return  ApiResponse<object>.Success(user);    
        }

        // POST api/<ScramCredentialsUserController>
        [HttpPost]
        public async Task<ApiResponse<string>> PostAsync([FromBody] UserReq user)
        {
            ScramCredentialsUser scramUser = new()
            {
                Name = user.Name,
                Password = user.Password,
            };
            await _servicekafkaAdmin.AlterUserScramCredentialsAsync(scramUser);
            
            return ApiResponse<string>.Success($"创建 Scram 用户{user.Name}成功");
        }

        [HttpDelete("{username}")]
        public async Task<ApiResponse<string>> Delete(string username)
        {
            ScramCredentialsUser scramUser = new()
            {
                Name = username
            };
            await _servicekafkaAdmin.AlterUserScramCredentialsAsync(scramUser,"DELETE");
            return ApiResponse<string>.Success($"删除 Scram 用户{username} 成功");
        }
    }
}