using System.Text;
using Dlhis.Constants;
using Dlhis.Entity.Basic.Entity;
using Kurisu.AspNetCore.Authentication.Abstractions;
using Kurisu.AspNetCore.DataAccess.SqlSugar.Services;
using Kurisu.AspNetCore.Utils.Extensions;

namespace Dlhis.Basic.Organization.Services.Implements;

public class GainfoQrCodeService : IGainfoQrCodeService
{
    private readonly IDbContext _dbContext;
    private readonly ICurrentUser _currentUser;
    private readonly IFactorySettingService _factorySettingService;

    public GainfoQrCodeService(IDbContext dbContext, ICurrentUser currentUser, IFactorySettingService factorySettingService)
    {
        _dbContext = dbContext;
        _currentUser = currentUser;
        _factorySettingService = factorySettingService;
    }

    public async Task<string> GetMyQrCodeAsync(bool isNeedRefresh = false)
    {
        var jinkoCode = _currentUser.GetUserClaim(UserClaimConstants.JinkoCode);
        if (jinkoCode.IsEmpty())
        {
            return null;
        }

        var factory = _currentUser.GetStringTenantId();

        var now = DateTime.Now;
        var gainfoQrCode = await _dbContext.Queryable<GainfoQrCodeEntity>().SingleAsync(x => x.UserCode == jinkoCode);

        if (gainfoQrCode == null)
        {
            gainfoQrCode = new GainfoQrCodeEntity
            {
                UserCode = jinkoCode,
                QrCode = GenerateQrCode(jinkoCode)
            };

            await _dbContext.InsertAsync(gainfoQrCode);
            return gainfoQrCode.QrCode;
        }

        var setting = await _factorySettingService.GetFactorySettingAsync(factory, false);
        if (gainfoQrCode.ModifiedTime.AddMinutes(setting.UserQrCodeExpiration!.Value) >= now && !isNeedRefresh)
        {
            return gainfoQrCode.QrCode;
        }

        gainfoQrCode.QrCode = GenerateQrCode(jinkoCode);
        await _dbContext.UpdateAsync(gainfoQrCode);

        return gainfoQrCode.QrCode;
    }

    //****************************************************************** help methods **********************************************************************************

    private static string GenerateQrCode(string code)
    {
        var ts = DateTimeOffset.Now.ToUnixTimeMilliseconds();
        var qrCode = string.Concat("consumer", ":", code, ":");

        return QrCodeConstants.User + qrCode.ToArray().Select(x =>
        {
            var b = Encoding.ASCII.GetBytes(x.ToString());
            int i = b[0];
            return Convert.ToString(i);

        }).Join(string.Empty) + ts;
    }
}