package query

import (
	"context"
	"database/sql"
	"encoding/hex"
	"encoding/json"
	"github.com/jinzhu/copier"
	"github.com/pkg/errors"
	"qnc-server/common/xerr"
	"qnc-server/pkg/lzkit/crypto"
	"qnc-server/pkg/lzkit/delay"
	"qnc-server/pkg/lzkit/lzUtils"
	"time"

	"qnc-server/app/user/cmd/api/internal/svc"
	"qnc-server/app/user/cmd/api/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type QueryDetailByOrderIdLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewQueryDetailByOrderIdLogic(ctx context.Context, svcCtx *svc.ServiceContext) *QueryDetailByOrderIdLogic {
	return &QueryDetailByOrderIdLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *QueryDetailByOrderIdLogic) QueryDetailByOrderId(req *types.QueryDetailByOrderIdReq) (resp *types.QueryDetailByOrderIdResp, err error) {
	// 获取订单信息
	order, err := l.svcCtx.OrderModel.FindOne(l.ctx, req.OrderId)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "报告查询, 查找报告错误: %+v", err)
	}

	// 创建渐进式延迟策略实例
	progressiveDelayOrder, err := delay.New(200*time.Millisecond, 3*time.Second, 10*time.Second, 1.5)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "初始化渐进式延迟策略失败: %+v", err)
	}

	// 等待订单状态变为 "paid"
	startTime := time.Now()
	for order.Status == "pending" {
		if time.Since(startTime) > 10*time.Second {
			return nil, errors.Wrapf(xerr.NewErrCodeMsg(xerr.LOGIC_QUERY_WAIT, ""), "")
		}

		// 使用渐进式延迟，获取下次延迟时间
		nextDelay, _ := progressiveDelayOrder.NextDelay()

		// 等待一段时间后再查一次订单状态
		time.Sleep(nextDelay)

		// 再次查找订单
		order, err = l.svcCtx.OrderModel.FindOne(l.ctx, req.OrderId)
		if err != nil {
			return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "报告查询, 查找订单错误: %+v", err)
		}
	}
	if order.Status != "paid" {
		return nil, errors.Wrapf(xerr.NewErrCodeMsg(xerr.LOGIC_QUERY_WAIT, ""), "")
	}
	// 获取报告信息
	queryModel, err := l.svcCtx.QueryModel.FindOneByOrderId(l.ctx, req.OrderId)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "报告查询, 查找报告错误: %+v", err)
	}

	// 创建渐进式延迟实例
	progressiveDelayQuery, err := delay.New(200*time.Millisecond, 3*time.Second, 10*time.Second, 1.5)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "初始化渐进式延迟策略失败: %+v", err)
	}

	// 等待 queryModel.QueryState 不再是 "pending"
	startTime = time.Now()
	for queryModel.QueryState == "pending" {
		if time.Since(startTime) > 10*time.Second {
			return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "报告查询超时，查询状态长时间为 'pending'")
		}

		// 使用渐进式延迟，获取下次延迟时间
		nextDelay, _ := progressiveDelayQuery.NextDelay()

		// 每隔一段时间检查一次查询状态
		time.Sleep(nextDelay)

		// 再次查询 report 状态
		queryModel, err = l.svcCtx.QueryModel.FindOneByOrderId(l.ctx, req.OrderId)
		if err != nil {
			return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "报告查询, 查找报告错误: %+v", err)
		}
	}

	// 根据 QueryState 做后续处理
	if queryModel.QueryState == "failed" {
		return nil, errors.Wrapf(xerr.NewErrCodeMsg(xerr.LOGIC_QUERY_ERROR, ""), "")
	}

	var query types.Query
	query.CreateTime = queryModel.CreateTime.Format("2006-01-02 15:04:05")
	query.UpdateTime = queryModel.UpdateTime.Format("2006-01-02 15:04:05")

	// 解密查询数据
	secretKey := l.svcCtx.Config.Encrypt.SecretKey
	key, decodeErr := hex.DecodeString(secretKey)
	if decodeErr != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "报告查询, 获取AES解密解药失败, %+v", err)
	}

	processErr := ProcessQueryData(queryModel.QueryData, &query.QueryData, key)
	if processErr != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "报告查询, 报告结果处理失败: %v", processErr)
	}
	// 复制报告数据
	err = copier.Copy(&query, queryModel)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "报告查询, 报告结构体复制失败, %+v", err)
	}

	return &types.QueryDetailByOrderIdResp{
		Query: query,
	}, nil
}

// ProcessQueryData 解密和反序列化 QueryData
func ProcessQueryData(queryData sql.NullString, target *[]map[string]interface{}, key []byte) error {
	queryDataStr := lzUtils.NullStringToString(queryData)
	if queryDataStr == "" {
		return nil
	}
	// 解密 queryData
	decryptedData, decryptErr := crypto.AesDecrypt(queryDataStr, key)
	if decryptErr != nil {
		return decryptErr
	}

	// 反序列化解密后的数据
	unmarshalErr := json.Unmarshal(decryptedData, target)
	if unmarshalErr != nil {
		return unmarshalErr
	}

	return nil
}