package repositories

import (
	"fmt"
	"time"
	"xorm.io/xorm"
	"xps/datamodel"
    "xps/viewmodel"
)

type ModelObjectRepo struct {
	engine *xorm.Engine
}

func NewModelObjectRepo(engine *xorm.Engine) *ModelObjectRepo {
	return &ModelObjectRepo{
		engine: engine,
	}
}

func (d *ModelObjectRepo) GetPage(m map[string]interface{}) (*viewmodel.PageResult, error) {
	limit := m["limit"].(int)
	page  := m["page"].(int)

	sqlSelect := ` SELECT A.*,
                          B.model_title      `
	sqlFrom   := ` FROM   ds_object   AS A
                   LEFT JOIN ds_model AS B ON (A.model_id = B.model_id)  `
	sqlWhere  := ` WHERE A.deleted_flag = 0  `
	if keywords, ok := m["keywords"]; ok {
		sqlWhere += ` AND A.object_title like ` + "'%" + fmt.Sprintf("%s", keywords) + "%'"
	}

	sqlCount := ` SELECT COUNT(*) `
	total, err1 := d.engine.SQL(sqlCount + sqlFrom + sqlWhere).Count(new(viewmodel.ModelObjectInfo))
	if err1 != nil {
		return nil, err1
	}
	sqlOrderBy := " ORDER BY A.model_id, A.object_id "
	
	pageStart  := (page - 1) * limit
	sqlLimit   := fmt.Sprintf(" LIMIT %d OFFSET %d ", limit, pageStart)

	datalist := make([]viewmodel.ModelObjectInfo, 0)
	err2 := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere + sqlOrderBy + sqlLimit).Find(&datalist)
	if err2 != nil {
		return nil, err2
	}

	pageResult := &viewmodel.PageResult{}
	pageResult.Data     = datalist
	pageResult.Total    = total
	pageResult.PageSize = limit
	pageResult.Page     = page
	return pageResult, nil
}

func (d *ModelObjectRepo) GetList(m map[string]interface{}) ([]viewmodel.ModelObjectInfo, error) {
	modelId   := m["modelId"].(int64)
	
	sqlSelect := ` SELECT A.*,
                          B.model_title      `
	sqlFrom   := ` FROM   ds_object   AS A
                   LEFT JOIN ds_model AS B ON (A.model_id = B.model_id)  `
	sqlWhere  := ` WHERE A.deleted_flag = 0 AND A.model_id =` + fmt.Sprintf("%d", modelId)
	if keywords, ok := m["keywords"]; ok {
		sqlWhere += ` AND A.object_title like ` + "'%" + fmt.Sprintf("%s", keywords) + "%'"
	}
	sqlOrderBy := " ORDER BY A.model_id, A.object_id "
	
	datalist := make([]viewmodel.ModelObjectInfo, 0)
	err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere + sqlOrderBy).Find(&datalist)
	if err != nil {
		return nil, err
	} else {
		return datalist, nil
	}
}

func (d *ModelObjectRepo) GetListById(modelId int64) ([]viewmodel.ModelObjectInfo, error) {
	
	sqlSelect  := ` SELECT    A.*,
                              B.model_title      `
	sqlFrom    := ` FROM      ds_object  AS A
                    LEFT JOIN ds_model   AS B ON (A.model_id = B.model_id)  `
	sqlWhere   := ` WHERE A.deleted_flag = 0 `
    sqlWhere   += fmt.Sprintf(" AND A.model_id = %d " , modelId)
	sqlOrderBy := " ORDER BY A.model_id, A.object_id "
	
	datalist := make([]viewmodel.ModelObjectInfo, 0)
	err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere + sqlOrderBy).Find(&datalist)
	if err != nil {
		return nil, err
	} else {
		return datalist, nil
	}
}

func (d *ModelObjectRepo) GetAll() ([]viewmodel.ModelObjectInfo, error) {
	sqlSelect  := ` SELECT    A.*,
                              B.model_title      `
	sqlFrom    := ` FROM      ds_object  AS A
                    LEFT JOIN ds_model   AS B ON (A.model_id = B.model_id)  `
	sqlWhere   := ` WHERE A.deleted_flag = 0  `
	sqlOrderBy := " ORDER BY A.model_id, A.object_id "
	
	datalist := make([]viewmodel.ModelObjectInfo, 0)
	err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere + sqlOrderBy).Find(&datalist)
	if err != nil {
		return nil, err
	} else {
		return datalist, nil
	}
}

func (d *ModelObjectRepo) SelectForBizObjectMapping(modelId, targetBizId, targetObjectId int64)([]viewmodel.ModelObjectInfo, error) {
	sqlSelect  := ` SELECT    A.*,
                              B.model_title      `
	sqlFrom    := ` FROM      ds_object  AS A
                    LEFT JOIN ds_model   AS B ON (A.model_id = B.model_id)  `
	sqlWhere   := ` WHERE A.deleted_flag = 0 `
	sqlWhere   += ` AND NOT EXISTS (
                        SELECT *
						FROM  biz_object_mapping  AS M
						WHERE A.model_id = M.mapping_model_id AND A.object_id = M.mapping_object_id`
	sqlWhere   += fmt.Sprintf(" AND M.biz_id    = %d ", targetBizId)
	sqlWhere   += fmt.Sprintf(" AND M.object_id = %d ", targetObjectId)
	sqlWhere   +=  ` )  `
	sqlWhere   += fmt.Sprintf(" AND A.model_id = %d ", modelId)
	sqlOrderBy := " ORDER BY A.model_id, A.object_id "
	
	datalist := make([]viewmodel.ModelObjectInfo, 0)
	err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere + sqlOrderBy).Find(&datalist)
	if err != nil {
		return nil, err
	} else {
		return datalist, nil
	}
}


func (d *ModelObjectRepo) GetById(modelId, objectId int64) (*viewmodel.ModelObjectInfo, error) {
	sqlSelect := ` SELECT A.*,
                          B.model_title      `
	sqlFrom   := ` FROM   ds_object   AS A
                   LEFT JOIN ds_model AS B ON (A.model_id = B.model_id)  `
	sqlWhere  := ` WHERE A.deleted_flag = 0 AND A.model_id =` + fmt.Sprintf("%d", modelId)
	sqlWhere  += fmt.Sprintf(" AND A.object_id = %d", objectId)
	
	data := &viewmodel.ModelObjectInfo{}
	has, err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere).Get(data)
	if !has || err != nil {
		return nil, err
	} else {
		return data, nil
	}
}

func (d *ModelObjectRepo) Create(data *datamodel.ModelObject) error {
	data.CreatedAt = time.Now()
	_, err := d.engine.Insert(data)
	return err
}

func (d *ModelObjectRepo) Update(data *datamodel.ModelObject) error {
	modelId  := data.ModelId
	objectId := data.ObjectId

	data.UpdatedAt = time.Now()
	_, err := d.engine.
		Where("model_id = ?", modelId).
		Where("object_id = ?", objectId).
		Update(data)
	return err
}

func (d *ModelObjectRepo) Delete(m map[string]interface{}) error {
	modelId   := m["modelId"].(int64)
	objectId  := m["objectId"].(int64)
	deletedBy := m["deletedBy"].(int64)

	data := &datamodel.ModelObject{}
	data.DeletedFlag = 1
	data.DeletedBy   = deletedBy
	data.DeletedAt   = time.Now()
	_, err := d.engine.
		Where("model_id = ?", modelId).
		Where("object_id = ?", objectId).
		Update(data)
	return err
}