package service

import (
	"errors"
	"time"
	"xps/cache"
	"xps/datamodels"
    "xps/datasource"
    "xps/repositories"
	"xps/viewmodels"
)

type ModelObjectService interface {
	GetList(m map[string]interface{}) ([]viewmodels.ModelObjectInfo, error)
	GetPage(m map[string]interface{}) (*viewmodels.PageResult, error)
	GetById(modelId, objectId int64) (*viewmodels.ModelObjectInfo, error)
	Create(d *datamodels.ModelObject) error
	Update(d *datamodels.ModelObject) error
	Delete(m map[string]interface{}) error
	GetObjectDataById(modelId, objectId int64) (*viewmodels.ModelObjectDataInfo, error)
	CreateObjectData(d *viewmodels.ModelObjectData) error
	UpdateObjectData(d *viewmodels.ModelObjectData) error
	
	CacheModelObject(modelId, objectId int64) error
}

type modelObjectService struct {
	modelObjectRepo     *repositories.ModelObjectRepo
	modelObjectAttrRepo *repositories.ModelObjectAttrRepo
}

func NewModelObjectService() ModelObjectService {
	return &modelObjectService{
		modelObjectRepo:     repositories.NewModelObjectRepo(datasource.InstanceMaster()),
		modelObjectAttrRepo: repositories.NewModelObjectAttrRepo(datasource.InstanceMaster()),
	}
}

func (s *modelObjectService) GetList(m map[string]interface{}) ([]viewmodels.ModelObjectInfo, error) {
	return s.modelObjectRepo.GetList(m)
}

func (s *modelObjectService) GetPage(m map[string]interface{}) (*viewmodels.PageResult, error) {
	return s.modelObjectRepo.GetPage(m)
}

func (s *modelObjectService) GetById(modelId, objectId int64) (*viewmodels.ModelObjectInfo, error) {
	return s.modelObjectRepo.GetById(modelId, objectId)
}

func (s *modelObjectService) Create(Object *datamodels.ModelObject) error {
	Object.ObjectId = NewID()
	return s.modelObjectRepo.Create(Object)
}

func (s *modelObjectService) Update(Object *datamodels.ModelObject) error {
	return s.modelObjectRepo.Update(Object)
}

func (s *modelObjectService) Delete(m map[string]interface{}) error {
	modelId  := m["modelId"].(int64)
	objectId := m["objectId"].(int64)
	err := s.modelObjectRepo.Delete(m)
	if err != nil {
		return err
	}
	return s.modelObjectAttrRepo.DeleteByObjectId(modelId, objectId)
}

func (s *modelObjectService) GetObjectDataById(modelId, objectId int64) (*viewmodels.ModelObjectDataInfo, error) {
	objectInfo, err := s.modelObjectRepo.GetById(modelId, objectId)
	if err != nil {
		return nil, err
	}
	
	attrs, err := s.modelObjectAttrRepo.GetListById(modelId, objectId)
	if err != nil {
		return nil, err
	}

	objectDataInfo := &viewmodels.ModelObjectDataInfo{
		ModelId:     objectInfo.ModelId,
		ObjectId:    objectInfo.ObjectId,
		ObjectType:  objectInfo.ObjectType,
		ObjectTitle: objectInfo.ObjectTitle,
		ObjectCode:  objectInfo.ObjectCode,
		Comment:     objectInfo.Comment,
		IsFixed:     objectInfo.IsFixed,
		Attrs:       attrs,
	}

	return objectDataInfo, nil
}

func (s *modelObjectService) CreateObjectData(o *viewmodels.ModelObjectData) error {
	modelId   := o.ModelId
	objectId  := NewID()
	createdBy := o.CreatedBy
	object := &datamodels.ModelObject{
		ModelId:     modelId,
		ObjectId:    objectId,
		ObjectType:  o.ObjectType,
		ObjectTitle: o.ObjectTitle,
		ObjectCode:  o.ObjectCode,
		Comment:     o.Comment,
		IsFixed:     0,
		CreatedBy:   createdBy,
		CreatedAt:   time.Now(),
	}

	err := s.modelObjectRepo.Create(object)
	if err != nil {
		return err
	}
	
	// cache object
	for _, a := range o.Attrs {
		newId := NewID()
		objectAttr := &datamodels.ModelObjectAttr{
			ModelId:      modelId,
			ObjectId:     objectId,
			AttrId:       newId,
			AttrTitle:    a.AttrTitle,
			AttrCode:     a.AttrCode,
			AttrType:     a.AttrType,
			AttrLength:   a.AttrLength,
			AttrDecimals: a.AttrDecimals,
			Comment:      a.Comment,
			IsFixed:      a.IsFixed,
			IsNotNull:    a.IsNotNull,
			IsPKey:       a.IsPKey,
			CreatedAt:    time.Now(),
			CreatedBy:    createdBy,
		}

		err = s.modelObjectAttrRepo.Create(objectAttr)
		if err != nil {
			return err
		}
	}
	
	return 	s.CacheModelObject(modelId, objectId)
}

func (s *modelObjectService) UpdateObjectData(o *viewmodels.ModelObjectData) error {
	modelId   := o.ModelId
	objectId  := o.ObjectId
	updatedBy := o.UpdatedBy
	object := &datamodels.ModelObject{
		ModelId:     modelId,
		ObjectId:    objectId,
		ObjectType:  o.ObjectType,
		ObjectTitle: o.ObjectTitle,
		ObjectCode:  o.ObjectCode,
		Comment:     o.Comment,
		IsFixed:     0,
		UpdatedBy:   updatedBy,
	}

	err := s.modelObjectRepo.Update(object)
	if err != nil {
		return err
	}

	err = s.modelObjectAttrRepo.DeleteByObjectId(modelId, objectId)
	if err != nil {
		return err
	}
	
	for _, a := range o.Attrs {
		newId := NewID()
		objectAttr := &datamodels.ModelObjectAttr{
			ModelId:      modelId,
			ObjectId:     objectId,
			AttrId:       newId,
			AttrTitle:    a.AttrTitle,
			AttrCode:     a.AttrCode,
			AttrType:     a.AttrType,
			AttrLength:   a.AttrLength,
			AttrDecimals: a.AttrDecimals,
			Comment:      a.Comment,
			IsFixed:      a.IsFixed,
			IsNotNull:    a.IsNotNull,
			IsPKey:       a.IsPKey,
			CreatedBy:    updatedBy,
		}

		err = s.modelObjectAttrRepo.Create(objectAttr)
		if err != nil {
			return err
		}
	}
	
	return s.CacheModelObject(modelId, objectId)
}


func (s *modelObjectService) CacheModelObject(modelId, objectId int64) error {
	o, err1 := s.modelObjectRepo.GetById(modelId, objectId)
	if err1 != nil {
		return err1
	}
	err3 := cache.SetModelObject(o.ObjectCode, o)
	if err3 != nil {
		return errors.New("Redis缓存Biz Object数据失败")
	}
	return nil
}