package model

import (
	"context"
	"errors"
	"go_dreamfactory/lego/core"
	"go_dreamfactory/lego/core/cbase"
	"go_dreamfactory/lego/sys/log"
	"go_dreamfactory/lego/sys/mgo"
	"go_dreamfactory/modules"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo/options"
)

const (
	WriteMaxNum uint32 = 1000 //一次性最处理条数
)

type DB_Comp struct {
	cbase.ModuleCompBase
	mgo mgo.ISys
}
type Autogenerated struct {
	ID  string `json:"_id"`
	UID string `json:"uid"`
	Act string `json:"act"` // insert update delete
	D   []interface{}
}

// type data struct {
// 	Table     string
// 	Wheremap  map[string]interface{} // 如果是insert 条件就是nil del 只有条件
// 	Modifymap map[string]map[string]interface{}
// }

type QueryStruct struct {
	Selector bson.M
	Query    bson.M
}

const (
	DB_ModelTable core.SqlTable = "model"
)

type IModel interface {
	Model_UpdateDBBylog() (err error)                    // 读取日志并更新对应的表
	Model_InsertDBBylog(data *Autogenerated) (err error) // 插入日志
	Model_UpdateUserDataByUid(uid string) (err error)    // 读取指定玩家信息到db中
}

func (this *DB_Comp) Model_UpdateDBBylog() (err error) {

	_delID := make([]string, 0) // 处理完成要删除的id
	_data, err := this.mgo.Find(DB_ModelTable, bson.M{}, options.Find().SetLimit(int64(WriteMaxNum)))
	if err != nil {
		return err
	}
	for _data.Next(context.TODO()) { // 处理删除逻辑
		data := &Autogenerated{}
		if err = _data.Decode(data); err == nil {
			_delID = append(_delID, data.ID)
		} else {
			log.Errorf("Decode Data err : %v", err)
			continue
		}

		log.Debugf("======= insert log : %+v =======", data)
		if data.Act == string(modules.LogHandleType_Insert) {
			if len(data.D) < 2 { // 参数校验
				log.Errorf("parameter len _id : %s,uid : %s d.len:%v", data.ID, data.UID, len(data.D))
				return errors.New("parameter len err")
			}
			query := data.D[1].([]interface{})
			_, err := this.mgo.InsertMany(data.D[0].(core.SqlTable), query)
			if err != nil {
				log.Errorf("insert %s db err:%v", data.D[0].(core.SqlTable), err)
			}
		} else if data.Act == string(modules.LogHandleType_Delete) {
			if len(data.D) < 2 { // 参数校验
				log.Errorf("parameter len _id : %s,uid : %s d.len:%v", data.ID, data.UID, len(data.D))
				return errors.New("parameter len err")
			}
			_, err := this.mgo.DeleteMany(data.D[0].(core.SqlTable), data.D[1].(map[string]interface{}))
			if err != nil {
				log.Errorf("delete %s db err:%v", data.D[0].(core.SqlTable), err)
			}
		} else { // update
			if len(data.D) < 3 { // 参数校验
				log.Errorf("parameter len _id : %s,uid : %s d.len:%v", data.ID, data.UID, len(data.D))
				return errors.New("parameter len err")
			}
			where := data.D[1].(map[string]interface{})
			_obj := &QueryStruct{}
			for k, v := range where {
				_obj.Selector[k] = v
			}
			query := data.D[2].(map[string]interface{})
			for k, v := range query {
				_obj.Query[k] = v
			}
			this.mgo.UpdateMany(data.D[0].(core.SqlTable), _obj.Selector, _obj.Query)
		}
	}
	// 批量删除已处理的数据
	_, err = this.mgo.DeleteMany(DB_ModelTable, bson.M{"_id": bson.M{"$inc": _delID}}, options.Delete())
	if err != nil {
		log.Errorf("del err %v", err)
	}
	return
}

func (this *DB_Comp) Model_InsertDBBylog(data *Autogenerated) (err error) {

	_, err = this.mgo.InsertOne(DB_ModelTable, data)
	if err != nil {
		log.Errorf("insert model db err %v", err)
	}
	return err
}

func (this *DB_Comp) Model_UpdateUserDataByUid(uid string) (err error) {

	_delID := make([]string, 0) // 处理完成要删除的id
	_data, err := this.mgo.Find(DB_ModelTable, bson.M{"userid": uid}, options.Find())
	if err != nil {
		return err
	}
	for _data.Next(context.TODO()) { // 处理删除逻辑
		data := &Autogenerated{}
		if err = _data.Decode(data); err == nil {
			_delID = append(_delID, data.ID)
		} else {
			log.Errorf("Decode Data err : %v", err)
			continue
		}

		log.Debugf("======= insert log : %+v =======", data)
		if data.Act == string(modules.LogHandleType_Insert) {
			if len(data.D) < 2 { // 参数校验
				log.Errorf("parameter len _id : %s,uid : %s d.len:%v", data.ID, data.UID, len(data.D))
				return errors.New("parameter len err")
			}
			query := data.D[1].([]interface{})
			_, err := this.mgo.InsertMany(data.D[0].(core.SqlTable), query)
			if err != nil {
				log.Errorf("insert %s db err:%v", data.D[0].(core.SqlTable), err)
			}
		} else if data.Act == string(modules.LogHandleType_Delete) {
			if len(data.D) < 2 { // 参数校验
				log.Errorf("parameter len _id : %s,uid : %s d.len:%v", data.ID, data.UID, len(data.D))
				return errors.New("parameter len err")
			}
			_, err := this.mgo.DeleteMany(data.D[0].(core.SqlTable), data.D[1].(map[string]interface{}))
			if err != nil {
				log.Errorf("delete %s db err:%v", data.D[0].(core.SqlTable), err)
			}
		} else { // update
			if len(data.D) < 3 { // 参数校验
				log.Errorf("parameter len _id : %s,uid : %s d.len:%v", data.ID, data.UID, len(data.D))
				return errors.New("parameter len err")
			}
			where := data.D[1].(map[string]interface{})
			_obj := &QueryStruct{}
			for k, v := range where {
				_obj.Selector[k] = v
			}
			query := data.D[2].(map[string]interface{})
			for k, v := range query {
				_obj.Query[k] = v
			}
			this.mgo.FindOneAndUpdate(data.D[0].(core.SqlTable), _obj.Selector, _obj.Query)
		}
	}
	// 批量删除已处理的数据
	_, err = this.mgo.DeleteMany(DB_ModelTable, bson.M{"_id": bson.M{"$inc": _delID}}, options.Delete())
	if err != nil {
		log.Errorf("del err %v", err)
	}
	return
}