using System.ComponentModel.DataAnnotations;
using System.Text;
using InterfaceForward.Application.Contracts.Dtos.App;
using InterfaceForward.Application.Helpers;
using InterfaceForward.Application.OSS;
using InterfaceForward.Domain.Shared.Dtos;
using InterfaceForward.Repositories;
using InterfaceForward.Repositories.App.Entitys;
using InterfaceForward.Repositories.App.Services;
using InterfaceForward.Repositories.Interface.Entitys;
using Microsoft.AspNetCore.Mvc;
using SqlSugar;
using SqlSugar.Extensions;

namespace InterfaceForward.Application.Services.App;

/// <summary>
/// 应用服务
/// </summary>
[Route("App")]
[ApiExplorerSettings(GroupName = "应用服务")]
public class AppsService : BaseService
{
    private readonly IAppRepository _appRepository;
    private readonly IAppScopeRepository _appScopeRepository;
    private readonly IBasicRepository<InterfaceEntity> _interfaceRepository;

    /// <summary>
    /// 
    /// </summary>
    public AppsService(
        IAppRepository appRepository
        , IAppScopeRepository appScopeRepository
        , IBasicRepository<InterfaceEntity> interfaceRepository)
    {
        _appRepository = appRepository;
        _appScopeRepository = appScopeRepository;
        _interfaceRepository = interfaceRepository;
    }

    #region Get

    /// <summary>
    /// 应用列表
    /// </summary>
    /// <param name="input">入参</param>
    /// <returns></returns>
    [HttpGet("GetList")]
    public async Task<PagedListDto<AppListOutput>> GetList([FromQuery] PagedQueryInput input)
    {
        var res = await _appRepository.AsQueryable()
            .Select(x => new AppListOutput { Id = x.Id.SelectAll() })
            .OrderByDescending(a => a.UpdateTime)
            .ToPagedListAsync(input.PageIndex, input.PageSize);

        var logoKeys = res.Items
            .Where(x => !x.LogoKey.IsNullOrWhiteSpace())
            .Select(x => x.LogoKey).ToArray();
        var urlDic = OSSHelper.GetUrlByKeys(logoKeys);

        foreach (var url in urlDic)
            res.Items.First(x => x.LogoKey == url.Key).LogoUrl = url.Value;

        return res;
    }

    /// <summary>
    /// 应用下拉列表
    /// </summary>
    /// <param name="keyword">应用名称</param>
    /// <returns></returns>
    [HttpGet("GetDropDownList")]
    public async Task<List<AppDropDownItem>> GetDropDownList(string keyword)
    {
        bool flag = keyword.IsNullOrWhiteSpace();
        return await _appRepository
            .GetListAsync(x => flag || x.Name.Contains(keyword), x => new
                AppDropDownItem
                {
                    Key = x.Id,
                    Value = x.Name
                });
    }

    /// <summary>
    /// 生成Key 和 Secret
    /// </summary>
    /// <returns></returns>
    [HttpGet("GetKeyAndSecret")]
    public async Task<dynamic> GetKeyAndSecret()
    {
        var date = DateTime.Now.ToString("yyMM");
        var redisKey = nameof(GetKeyAndSecret) + "_" + date;
        var num = await RedisHelper.Client.IncrByAsync(redisKey, 1);
        if (num > 999) throw new BusinessException("超过每月设计的数量");
        var key = "BSI" + date + num.ToString().PadLeft(3, '0');

        //创建一个StringBuilder对象存储密码
        StringBuilder secret = new StringBuilder();
        //使用for循环把单个字符填充进StringBuilder对象里面变成14位密码字符串
        for (int i = 0; i < 32; i++)
        {
            Random random = new Random();
            //随机选择里面其中的一种字符生成
            switch (random.Next(3))
            {
                case 0:
                    //调用生成生成随机数字的方法
                    secret.Append(CreateNum());
                    break;
                case 1:
                    //调用生成生成随机小写字母的方法
                    secret.Append(CreateSmallAbc());
                    break;
                case 2:
                    //调用生成生成随机大写字母的方法
                    secret.Append(CreateBigAbc());
                    break;
            }
        }

        return new { Key = key, Secret = secret.ToString() };
    }

    /// <summary>
    /// 详情
    /// </summary>
    /// <param name="id">主键</param>
    /// <returns></returns>
    [HttpGet("GetInfo")]
    public async Task<AppOutput> GetInfo([Required] int id)
    {
        var res = await _appRepository.AsQueryable()
            .Select(x => new AppOutput { Id = x.Id.SelectAll() })
            .SingleAsync(x => x.Id == id);
        _ = res ?? throw new BusinessException(message:"在指定的编号下找不到数据");

        if (res.LogoKey != null) res.LogoUrl = OSSHelper.GetUrlByKey(res.LogoKey);
        res.AppScope = await _appScopeRepository.AsQueryable()
            .Where(x => x.AppId == id)
            .Select(x => new AppScopeOutput { Id = x.Id.SelectAll() })
            .ToListAsync();

        return res;
    }

    #endregion

    #region Post

    /// <summary>
    /// 创建
    /// </summary>
    /// <param name="input">入参</param>
    /// <returns></returns>
    [HttpPost("Create")]
    public async Task Create(CreateAppInput input)
    {
        if (await _appRepository.IsAnyAsync(x => x.Name == input.Name))
            throw new BusinessException(message: "应用名称已存在");
        if (await _appRepository.IsAnyAsync(x => x.AppKey == input.AppKey))
            throw new BusinessException(message: "appkey已存在");
        if (await _appRepository.IsAnyAsync(x => x.AppSecret == input.AppSecret))
            throw new BusinessException(message: "appsecret已存在");

        var entity = ObjectMapper.Map<CreateAppInput, AppEntity>(input);
        var appScopeEntitys = ObjectMapper.Map<List<CreateAppScopeInput>, List<AppScopeEntity>>(input.AppScopeList);
        List<int> interfaceIds = input.AppScopeList.Select(x => x.InterfaceId).ToList();
        var interfaceDic =
            (await _interfaceRepository.GetListAsync(x => interfaceIds.Contains(x.Id), x => new { x.Id, x.Code }))
            .ToDictionary(x => x.Id, x => x.Code);

        using (var ts = TransacationHelper.GetReadCommitted())
        {
            var id = await _appRepository.InsertReturnIdentityAsync(entity);

            appScopeEntitys.ForEach(item =>
            {
                item.AppId = id;
                item.InterfaceCode = interfaceDic[item.InterfaceId];
            });

            await _appScopeRepository.InsertRangeAsync(appScopeEntitys);

            ts.Complete();
        }
    }

    /// <summary>
    /// 更新
    /// </summary>
    /// <param name="input">入参</param>
    /// <returns></returns>
    [HttpPost("Update")]
    public async Task<bool> Update(UpdateAppInput input)
    {
        if (await _appRepository.IsAnyAsync(x => x.Name == input.Name && x.Id != input.Id))
            throw new BusinessException(message: "应用名称已存在");
        if (await _appRepository.IsAnyAsync(x => x.AppKey == input.AppKey && x.Id != input.Id))
            throw new BusinessException(message: "appkey已存在");
        if (await _appRepository.IsAnyAsync(x => x.AppSecret == input.AppSecret && x.Id != input.Id))
            throw new BusinessException(message: "appsecret已存在");

        var entity = ObjectMapper.Map<UpdateAppInput, AppEntity>(input);
        var appScopeEntitys = ObjectMapper.Map<List<CreateAppScopeInput>, List<AppScopeEntity>>(input.AppScopeList);
        List<int> interfaceIds = input.AppScopeList.Select(x => x.InterfaceId).ToList();
        var interfaceDic =
            (await _interfaceRepository.GetListAsync(x => interfaceIds.Contains(x.Id), x => new { x.Id, x.Code }))
            .ToDictionary(x => x.Id, x => x.Code);

        using (var ts = TransacationHelper.GetReadCommitted())
        {
            await _appRepository.AsUpdateable(entity).IgnoreColumns(x => x.IsOnline)
                .IgnoreColumns(ignoreAllNullColumns: true).ExecuteCommandHasChangeAsync();

            appScopeEntitys.ForEach(item =>
            {
                item.AppId = input.Id;
                item.InterfaceCode = interfaceDic[item.InterfaceId];
            });

            await _appScopeRepository.UpdateAsync(x => new AppScopeEntity { IsDeleted = true },
                x => x.AppId == input.Id);
            await _appScopeRepository.InsertRangeAsync(appScopeEntitys);

            ts.Complete();

            return true;
        }
    }

    /// <summary>
    /// 删除
    /// </summary>
    /// <param name="ids">主键</param>
    /// <returns></returns>
    [HttpDelete("Delete")]
    public async Task<bool> Delete([FromBody] int[] ids)
    {
        using (var ts = TransacationHelper.GetReadCommitted())
        {
            await _appRepository.AsUpdateable().SetColumns(x => x.IsDeleted == true).Where(x => ids.Contains(x.Id))
                .ExecuteCommandAsync();

            await _appScopeRepository.AsUpdateable().SetColumns(x => x.IsDeleted == true)
                .Where(x => ids.Contains(x.AppId)).ExecuteCommandAsync();

            ts.Complete();

            return true;
        }
    }

    /// <summary>
    /// 更新是否上线
    /// </summary>
    /// <param name="id">主键</param>
    /// <param name="isOnline">是否上线</param>
    /// <returns></returns>
    [HttpPut("UpdateOnline")]
    public async Task<bool> UpdateOnline(int id, bool isOnline)
    {
        return await _appRepository.AsUpdateable().SetColumns(x => x.IsOnline == isOnline).Where(x => x.Id == id)
            .ExecuteCommandHasChangeAsync();
    }

    /// <summary>
    /// 检查应用接口是否可用
    /// </summary>
    /// <param name="input">入参</param>
    /// <returns></returns>
    /// <exception cref="BusinessException"></exception>
    [HttpPost("CheckApp")]
    public async Task<bool> CheckApp(CheckAppInput input)
    {
        var appEntity = await _appRepository.GetFirstAsync(x =>
            x.AppKey == input.AppKey && x.AppSecret == input.AppSecret && x.IsOnline == true);
        if (appEntity is null)
            throw new BusinessException(message: "在指定的编号下找不到数据");

        var appScopeEntity = await _appScopeRepository.GetAppScopeAsync(appEntity.Id, input.InterfaceCode);
        if (appScopeEntity is null)
            throw new BusinessException(message: "应用不可访问该接口");

        string redisKey = input.AppKey + input.InterfaceCode;

        if (await RedisHelper.Client.ExistsAsync(redisKey))
        {
            int num = (await RedisHelper.Client.GetAsync(redisKey)).ObjToInt();
            if (num < appScopeEntity.QPS)
                await RedisHelper.Client.IncrByAsync(redisKey, 1);
            else
                throw new BusinessException(message: "超过流量限制");
        }
        else
            await RedisHelper.Client.SetAsync(redisKey, 1, 1);

        return true;
    }

    #endregion

    #region Private

    /// <summary>
    /// 生成单个随机数字
    /// </summary>
    private int CreateNum()
    {
        Random random = new Random();
        int num = random.Next(10);
        return num;
    }

    /// <summary>
    /// 生成单个大写随机字母
    /// </summary>
    private string CreateBigAbc()
    {
        //A-Z的 ASCII值为65-90
        Random random = new Random();
        int num = random.Next(65, 91);
        string abc = Convert.ToChar(num).ToString();
        return abc;
    }

    /// <summary>
    /// 生成单个小写随机字母
    /// </summary>
    private string CreateSmallAbc()
    {
        //a-z的 ASCII值为97-122
        Random random = new Random();
        int num = random.Next(97, 123);
        string abc = Convert.ToChar(num).ToString();
        return abc;
    }

    #endregion
}