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package admin
import (
"fmt"
"io"
"net/http"
"os"
"path/filepath"
"strconv"
"strings"
"time"
)
func storeFileUploads(req *http.Request) (map[string]string, error) {
err := req.ParseMultipartForm(1024 * 1024 * 4) // maxMemory 4MB
if err != nil {
return nil, fmt.Errorf("%s", err)
}
ts := req.FormValue("timestamp")
// To use for FormValue name:urlPath
urlPaths := make(map[string]string)
// get ts values individually to use as directory names when storing
// uploaded images
date := make(map[string]int)
if ts == "" {
now := time.Now()
date["year"] = now.Year()
date["month"] = int(now.Month())
date["day"] = now.Day()
// create timestamp format 'yyyy-mm-dd' and set in PostForm for
// db insertion
ts = fmt.Sprintf("%d-%02d-%02d", date["year"], date["month"], date["day"])
req.PostForm.Set("timestamp", ts)
} else {
tsParts := strings.Split(ts, "-")
year, err := strconv.Atoi(tsParts[0])
if err != nil {
return nil, fmt.Errorf("%s", err)
}
month, err := strconv.Atoi(tsParts[1])
if err != nil {
return nil, fmt.Errorf("%s", err)
}
day, err := strconv.Atoi(tsParts[2])
if err != nil {
return nil, fmt.Errorf("%s", err)
}
date["year"] = year
date["month"] = month
date["day"] = day
}
// get or create upload directory to save files from request
pwd, err := os.Getwd()
if err != nil {
err := fmt.Errorf("Failed to locate current directory: %s", err)
return nil, err
}
tsParts := strings.Split(ts, "-")
urlPathPrefix := "api"
uploadDirName := "uploads"
uploadDir := filepath.Join(pwd, uploadDirName, tsParts[0], tsParts[1])
err = os.MkdirAll(uploadDir, os.ModeDir|os.ModePerm)
// loop over all files and save them to disk
for name, fds := range req.MultipartForm.File {
filename := fds[0].Filename
src, err := fds[0].Open()
if err != nil {
err := fmt.Errorf("Couldn't open uploaded file: %s", err)
return nil, err
}
defer src.Close()
// check if file at path exists, if so, add timestamp to file
absPath := filepath.Join(uploadDir, filename)
if _, err := os.Stat(absPath); !os.IsNotExist(err) {
filename = fmt.Sprintf("%d-%s", time.Now().Unix(), filename)
absPath = filepath.Join(uploadDir, filename)
}
// save to disk (TODO: or check if S3 credentials exist, & save to cloud)
dst, err := os.Create(absPath)
if err != nil {
err := fmt.Errorf("Failed to create destination file for upload: %s", err)
return nil, err
}
// copy file from src to dst on disk
if _, err = io.Copy(dst, src); err != nil {
err := fmt.Errorf("Failed to copy uploaded file to destination: %s", err)
return nil, err
}
// add name:urlPath to req.PostForm to be inserted into db
urlPath := fmt.Sprintf("/%s/%s/%s/%s/%s", urlPathPrefix, uploadDirName, tsParts[0], tsParts[1], filename)
urlPaths[name] = urlPath
}
return urlPaths, nil
}
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