package agent

import (
	"context"
	"database/sql"
	"qnc-server/app/user/model"
	"qnc-server/common/xerr"
	"qnc-server/pkg/lzkit/crypto"
	"time"

	"github.com/pkg/errors"
	"github.com/zeromicro/go-zero/core/stores/sqlx"

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

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

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

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

func (l *ActivateAgentMembershipLogic) ActivateAgentMembership(req *types.AgentActivateMembershipReq) (resp *types.AgentActivateMembershipResp, err error) {
	//userID, err := ctxdata.GetUidFromCtx(l.ctx)
	//if err != nil {
	//	return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "获取用户ID失败: %v", err)
	//}
	secretKey := l.svcCtx.Config.Encrypt.SecretKey
	encryptedMobile, err := crypto.EncryptMobile(req.Mobile, secretKey)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "加密手机号失败: %v", err)
	}
	userModel, err := l.svcCtx.UserModel.FindOneByMobile(l.ctx, encryptedMobile)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "查询代理信息失败: %v", err)
	}
	// 查询用户代理信息
	agentModel, err := l.svcCtx.AgentModel.FindOneByUserId(l.ctx, userModel.Id)
	if err != nil && err != sql.ErrNoRows {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "查询代理信息失败: %v", err)
	}

	// 定义等级顺序映射
	levelOrder := map[string]int{
		"":                        1,
		model.AgentLeveNameNormal: 1,
		model.AgentLeveNameVIP:    2,
		model.AgentLeveNameSVIP:   3,
	}

	// 验证请求等级合法性
	if _, valid := levelOrder[req.Type]; !valid {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "无效的代理等级: %s", req.Type)
	}

	// 如果存在代理记录，进行等级验证
	if agentModel != nil {
		currentLevel, exists := levelOrder[agentModel.LevelName]
		if !exists {
			return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR),
				"非法的当前代理等级: %s", agentModel.LevelName)
		}

		requestedLevel := levelOrder[req.Type]
		if requestedLevel < currentLevel {
			return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR),
				"禁止降级操作（当前等级：%s，请求等级：%s）", agentModel.LevelName, req.Type)
		}
	}

	err = l.svcCtx.AgentModel.Trans(l.ctx, func(transCtx context.Context, session sqlx.Session) error {
		agentModel.LevelName = req.Type
		agentModel.MembershipExpiryTime = RenewMembership(agentModel.MembershipExpiryTime)
		transErr := l.svcCtx.AgentModel.UpdateWithVersion(transCtx, session, agentModel)
		if transErr != nil {
			return transErr
		}
		agentMembershipRechargeOrder := model.AgentMembershipRechargeOrder{
			AgentId:       agentModel.Id,
			UserId:        userModel.Id,
			LevelName:     req.Type,
			Amount:        req.Amount,
			PaymentMethod: req.PaymentMethod,
			TransactionId: req.TransactionId,
		}
		_, transErr = l.svcCtx.AgentMembershipRechargeOrderModel.Insert(transCtx, session, &agentMembershipRechargeOrder)
		if transErr != nil {
			return transErr
		}
		return nil
	})
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "升级代理等级失败: %s", req.Type)
	}
	return &types.AgentActivateMembershipResp{
		MembershipType: req.Type,
		ExpireTime:     agentModel.MembershipExpiryTime.Time.Format("2006-01-02 15:04:05"),
	}, nil
}
func RenewMembership(expiry sql.NullTime) sql.NullTime {
	// 确定基准时间
	var baseTime time.Time
	if expiry.Valid {
		baseTime = expiry.Time
	} else {
		baseTime = time.Now()
	}

	// 增加一年（自动处理闰年）
	newTime := baseTime.AddDate(1, 0, 0)

	// 返回始终有效的 NullTime
	return sql.NullTime{
		Time:  newTime,
		Valid: true,
	}
}