Read CSV file on protected zip

Question

I have link like this: https://storage.googleapis.com/data/test_file.csv.zip the content is one csv file on the protected zip with password. How can I read data from the csv?

I have try this but its error

func ReadCSVZIPFromURL(fileURL string) (data [][]string, err error) {
    resp, err := http.Get(fileURL)
    if err != nil {
        return data, errors.AddTrace(err)
    }
    defer resp.Body.Close()

    r, err := zip.OpenReader(resp.Body)
    if err != nil {
        log.Fatal(err)
    }
    defer r.Close()

    for _, file := range r.File {
        if file.IsEncrypted() {
            file.SetPassword("password")
        }
        reader := csv.NewReader(file)

        data, err := reader.ReadAll()
    }

    return data, nil
} 

Answer 1

i have solve the problem, this the solve. the idea is we copy the byte to zip reader, and we will get the ioReader, the we we read ioReader use csv library. to encrypt and decrypt data using password we use this library "github.com/alexmullins/zip"

func GetCSVFromZipURL(ctx context.Context, fileURL, filePassword string) (ioReader io.Reader, err error) {
    span, ctx := tracer.StartSpanFromContext(ctx)
    defer span.Finish()

    resp, err := http.Get(fileURL)
    if err != nil {
        return ioReader, errors.AddTrace(err)
    }
    defer resp.Body.Close()

    buf := &bytes.Buffer{}

    _, err = io.Copy(buf, resp.Body)
    if err != nil {
        return ioReader, errors.AddTrace(err)
    }

    b := bytes.NewReader(buf.Bytes())
    r, err := zip.NewReader(b, int64(b.Len()))
    if err != nil {
        return ioReader, errors.AddTrace(err)
    }

    for _, f := range r.File {
        if f.IsEncrypted() {
            f.SetPassword(filePassword)
        }
        ioReader, err = f.Open()
        if err != nil {
            return ioReader, errors.AddTrace(err)
        }

        return ioReader, nil
    }

    return ioReader, nil
}

func getUserBenefitListFromCSV(ioReader io.Reader) (userBenefitList []UserBenefit, err error) {
    reader := csv.NewReader(ioReader)

    row := 1
    for {
        csvRowsStr, err := reader.Read()
        if err == io.EOF {
            break
        }
        if err != nil {
            return userBenefitList, errors.AddTrace(err)
        }

        // check if 1st row (header), skip
        if row == 1 {
            row++
            continue
        }

        if len(csvRowsStr) > 0 {
            userID, err := strconv.ParseInt(csvRowsStr[0], 10, 64)
            if err != nil {
                return userBenefitList, errors.AddTrace(err)
            }

            catalogID := 0
            if len(csvRowsStr) > 1 {
                catalogID, err = strconv.ParseInt(csvRowsStr[1], 10, 64)
                if err != nil {
                    return userBenefitList, errors.AddTrace(err)
                }
            }

            userBenefitTemp := UserBenefit{
                UserID:    userID,
                CatalogID: catalogID,
            }

            userBenefitList = append(userBenefitList, userBenefitTemp)
        }
    }

    return userBenefitList, nil
}