package service

import (
	"context"

	"github.com/1Panel-dev/1Panel/backend/app/dto"
	"github.com/1Panel-dev/1Panel/backend/app/repo"
	"github.com/1Panel-dev/1Panel/backend/constant"
	"github.com/1Panel-dev/1Panel/backend/utils/mysql"
	"github.com/1Panel-dev/1Panel/backend/utils/mysql/client"
	"github.com/jinzhu/copier"
	"github.com/pkg/errors"
)

type DatabaseService struct{}

type IDatabaseService interface {
	Get(name string) (dto.DatabaseInfo, error)
	SearchWithPage(search dto.DatabaseSearch) (int64, interface{}, error)
	CheckDatabase(req dto.DatabaseCreate) bool
	Create(req dto.DatabaseCreate) error
	Update(req dto.DatabaseUpdate) error
	Delete(id uint) error
	List(dbType string) ([]dto.DatabaseOption, error)
}

func NewIDatabaseService() IDatabaseService {
	return &DatabaseService{}
}

func (u *DatabaseService) SearchWithPage(search dto.DatabaseSearch) (int64, interface{}, error) {
	total, dbs, err := databaseRepo.Page(search.Page, search.PageSize,
		commonRepo.WithByType(search.Type),
		commonRepo.WithLikeName(search.Info),
		databaseRepo.WithoutByFrom("local"),
	)
	var datas []dto.DatabaseInfo
	for _, db := range dbs {
		var item dto.DatabaseInfo
		if err := copier.Copy(&item, &db); err != nil {
			return 0, nil, errors.WithMessage(constant.ErrStructTransform, err.Error())
		}
		datas = append(datas, item)
	}
	return total, datas, err
}

func (u *DatabaseService) Get(name string) (dto.DatabaseInfo, error) {
	var data dto.DatabaseInfo
	remote, err := databaseRepo.Get(commonRepo.WithByName(name))
	if err != nil {
		return data, err
	}
	if err := copier.Copy(&data, &remote); err != nil {
		return data, errors.WithMessage(constant.ErrStructTransform, err.Error())
	}
	return data, nil
}

func (u *DatabaseService) List(dbType string) ([]dto.DatabaseOption, error) {
	var opts []repo.DBOption
	if dbType == "mysql" {
		opts = append(opts, databaseRepo.WithByMysqlList())
	} else {
		opts = append(opts, commonRepo.WithByType(dbType))
	}
	dbs, err := databaseRepo.GetList(opts...)
	var datas []dto.DatabaseOption
	for _, db := range dbs {
		var item dto.DatabaseOption
		if err := copier.Copy(&item, &db); err != nil {
			return nil, errors.WithMessage(constant.ErrStructTransform, err.Error())
		}
		item.Database = db.Name
		datas = append(datas, item)
	}
	return datas, err
}

func (u *DatabaseService) CheckDatabase(req dto.DatabaseCreate) bool {
	if _, err := mysql.NewMysqlClient(client.DBInfo{
		From:     "remote",
		Address:  req.Address,
		Port:     req.Port,
		Username: req.Username,
		Password: req.Password,
		Timeout:  6,
	}); err != nil {
		return false
	}
	return true
}

func (u *DatabaseService) Create(req dto.DatabaseCreate) error {
	db, _ := databaseRepo.Get(commonRepo.WithByName(req.Name))
	if db.ID != 0 {
		return constant.ErrRecordExist
	}
	if _, err := mysql.NewMysqlClient(client.DBInfo{
		From:     "remote",
		Address:  req.Address,
		Port:     req.Port,
		Username: req.Username,
		Password: req.Password,
		Timeout:  6,
	}); err != nil {
		return err
	}
	if err := copier.Copy(&db, &req); err != nil {
		return errors.WithMessage(constant.ErrStructTransform, err.Error())
	}
	if err := databaseRepo.Create(context.Background(), &db); err != nil {
		return err
	}
	return nil
}

func (u *DatabaseService) Delete(id uint) error {
	db, _ := databaseRepo.Get(commonRepo.WithByID(id))
	if db.ID == 0 {
		return constant.ErrRecordNotFound
	}
	if err := databaseRepo.Delete(context.Background(), commonRepo.WithByID(id)); err != nil {
		return err
	}
	if db.From != "local" {
		if err := mysqlRepo.Delete(context.Background(), mysqlRepo.WithByMysqlName(db.Name)); err != nil {
			return err
		}
	}
	return nil
}

func (u *DatabaseService) Update(req dto.DatabaseUpdate) error {
	if _, err := mysql.NewMysqlClient(client.DBInfo{
		From:     "remote",
		Address:  req.Address,
		Port:     req.Port,
		Username: req.Username,
		Password: req.Password,
		Timeout:  300,
	}); err != nil {
		return err
	}

	upMap := make(map[string]interface{})
	upMap["version"] = req.Version
	upMap["address"] = req.Address
	upMap["port"] = req.Port
	upMap["username"] = req.Username
	upMap["password"] = req.Password
	upMap["description"] = req.Description
	return databaseRepo.Update(req.ID, upMap)
}