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storage.go
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storage.go
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package storage
import (
"encoding/gob"
"errors"
"os"
"github.com/Nino-K/gitlist/apihandler"
)
type Storage struct {
path string
}
type Data struct {
Id int
Repo apihandler.Repository
}
func New(path string) *Storage {
return &Storage{path: path}
}
func (s *Storage) Encode(data []Data) error {
file, err := os.Create(s.path)
defer file.Close()
if err != nil {
return err
}
dataEncoder := gob.NewEncoder(file)
return dataEncoder.Encode(data)
}
func (s *Storage) Decode() ([]Data, error) {
dataFile, err := os.Open(s.path)
defer dataFile.Close()
if err != nil {
return nil, err
}
var decodedData []Data
decoder := gob.NewDecoder(dataFile)
err = decoder.Decode(&decodedData)
if err != nil {
return nil, err
}
return decodedData, nil
}
func (s *Storage) GetDataById(id int) (*Data, error) {
notFoundError := errors.New("could not find data by the given Id")
data, err := s.Decode()
if err != nil {
return nil, err
}
if len(data) < 1 {
return nil, notFoundError
}
if item := find(data, id); item != nil {
return item, nil
}
return nil, notFoundError
}
func ConvertToStorageData(repos []apihandler.Repository) []Data {
data := make([]Data, len(repos))
for i, repo := range repos {
data[i] = Data{Id: i + 1, Repo: repo}
}
return data
}
func ConvertToRepository(data []Data) []apihandler.Repository {
repos := make([]apihandler.Repository, len(data))
for k, v := range data {
repos[k] = v.Repo
}
return repos
}
func find(data []Data, id int) *Data {
for _, entry := range data {
if id == entry.Id {
return &entry
}
}
return nil
}