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extra_file.go
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extra_file.go
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// Copyright (c) 2021 The BFE Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ibasic
import (
"context"
"fmt"
"os"
"strings"
)
type ExtraFile struct {
ID int64
Name string
ProductID int64
Description string
Md5 []byte
Content []byte
}
type ExtraFileParam struct {
Name *string
Description *string
Md5 []byte
Content []byte
}
type ExtraFileFilter struct {
Name *string
Names []string
}
type ExtraFileStorager interface {
CreateExtraFile(context.Context, *Product, ...*ExtraFileParam) error
DeleteExtraFile(context.Context, *ExtraFileFilter) error
FetchExtraFiles(context.Context, *ExtraFileFilter) ([]*ExtraFile, error)
}
func ExtraFilePath(moduleDir string, product *Product, fileName string) string {
fileName = strings.ReplaceAll(fileName, string(os.PathSeparator), "_")
return fmt.Sprintf("%s/%s/%s", moduleDir, strings.ToLower(product.Name), fileName)
}
type ExtraFileManager struct {
storager ExtraFileStorager
}
func NewExtraFileManager(storager ExtraFileStorager) *ExtraFileManager {
return &ExtraFileManager{
storager: storager,
}
}
func (em *ExtraFileManager) FetchExtraFile(ctx context.Context, fileName string) (*ExtraFile, error) {
list, err := em.storager.FetchExtraFiles(ctx, &ExtraFileFilter{
Name: &fileName,
})
if err != nil {
return nil, err
}
if len(list) > 0 {
return list[0], nil
}
return nil, nil
}