using Base62;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
namespace QRCodeService.Controllers
{
    [Route("[controller]/[action]")]
    [ApiController]
    public class PlaygroundController:ControllerBase
    {
        private readonly ILogger<PlaygroundController> logger;

        public PlaygroundController(ILogger<PlaygroundController> logger)
        {
            this.logger = logger;
        }
        [HttpGet]
        public IActionResult GenShortCode(string url)
        {
            logger.LogInformation("duduledule");
            var codes = new string[2];
            using (var md5 = MD5.Create())
            {
                var chunkSize = 8;
                var result = md5.ComputeHash(Encoding.UTF8.GetBytes(url));
                for (int i = 0; i < 2; i++)
                {
                    var first = result.Take(chunkSize).ToArray();
                    //即超过30位的忽略处理
                    var res = BitConverter.ToInt64(first);
                    var code = res.ToBase62();
                    codes[i] = code;
                    result = result.Skip(chunkSize).ToArray();
                }
                return Ok(codes);
            }
        } 
    }
}