property-device/utils/file.go

// Copyright 2019 getensh.com. All rights reserved.
// Use of this source code is governed by getensh.com.

package utils

import (
	"bytes"
	"property-device/errors"
	"io"
	"io/ioutil"
	"net/http"
	"os"
	"strconv"
	"time"
)

const FileTmpSavePath = ""

func SaveFileToLocal(uri string) (string, error) {
	tmp := FileTmpSavePath
	_ = os.MkdirAll(tmp, 0755)
	dst := tmp + strconv.Itoa(time.Now().Nanosecond()) + ".png"

	res, err := http.Get(uri)
	if err != nil {
		return "", errors.VendorError
	}
	defer res.Body.Close()

	body, _ := ioutil.ReadAll(res.Body)
	out, err := os.Create(dst)
	if err != nil {
		return "", errors.SystemError
	}
	defer out.Close()

	_, err = io.Copy(out, bytes.NewReader(body))
	if err != nil {
		return "", errors.SystemError
	}
	return dst, nil
}