SerhiiCho / shoshka-go

package utils

import (

	"encoding/json"

	"io/ioutil"

	"path/filepath"

)

// FileGetContents returns the content of the given file

func FileGetContents(filePath string) string {

	fileText, err := ioutil.ReadFile(filePath)

	if err != nil {

		print("File reading error\n")

		return ""

	}

	return string(fileText)

}

func getAbsPathToStorageFile(filename string) string {

	dirPath, err := filepath.Abs("./storage")

	HandleError(err, "Dir path error in getAbsPathToStorageFile function")

	return dirPath + "/" + filename

}

// GetCached returns cache

func GetCached(fileName string) []string {

	var oldSlice []string

	oldContext := FileGetContents(getAbsPathToStorageFile(fileName))

	err := json.Unmarshal([]byte(oldContext), &oldSlice)

	HandleError(err, "Unmarshal method returned error")

	return oldSlice

}

// PutIntoCache insert given slice into a file in JSON

func PutIntoCache(items []string, fileName string) {

	file, _ := json.MarshalIndent(items, "", " ")

	err := ioutil.WriteFile(getAbsPathToStorageFile(fileName), file, 0644)

	HandleError(err, "Can't write to a file storage/"+fileName)

}