using QRCodeService.Application.Queries;
using QRCodeService.Extensions;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace QRCodeService.Models
{
    public abstract class CheckSignModel
    {
        public int AppId { get; set; }
        public string Time { get; set; }
        public string Sign { get; set; }
        public async Task<bool> CheckSignAsync(string appkey)
        {
            //除Sign字段以外按key名排序
            var props = this.GetType().GetProperties();
            var signStr = string.Join(null,props.Where(p=>p.Name!="Sign").OrderBy(p => p.Name).Select(p=>p.GetValue(this).ToString()));
            var sign = Convert.ToBase64String((signStr + appkey).ToMD5());
            return sign == Sign;
        }
        public bool CheckTime()
        {
            var timeDate = Time.ToDate("yyyyMMddhhmmss");
            if (timeDate == null)
            {
                return false;
            }
            if (Math.Abs((timeDate.Value - DateTime.Now).TotalSeconds) > 60)
            {
                return false;
            }
            return true;
        }
        public async Task<bool> CheckValidAsync(string appkey)
        {
            return CheckTime() && await CheckSignAsync(appkey);
        }
    }
}