71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
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package user
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import (
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"bytes"
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"image"
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_ "image/jpeg"
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_ "image/png"
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"log/slog"
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"regexp"
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"strings"
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)
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type Validator struct {
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emailRegex *regexp.Regexp
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loginRegex *regexp.Regexp
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}
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func NewValidator() (*Validator, error) {
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emailRegexp := regexp.MustCompile(`^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`)
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loginRegex := regexp.MustCompile(`^[a-zA-Z0-9_-]+$`)
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return &Validator{emailRegex: emailRegexp, loginRegex: loginRegex}, nil
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}
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func (v *Validator) VerifyEmail(email string) bool {
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if len(email) < 3 || len(email) > 254 {
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return false
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}
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return v.emailRegex.MatchString(email)
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}
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func (v *Validator) VerifyLogin(login string) bool {
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username := strings.TrimSpace(login)
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if len(username) < 3 || len(username) > 30 {
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return false
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}
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if !v.loginRegex.MatchString(username) {
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return false
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}
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return true
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}
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func (v *Validator) VerifyPassword(password string) bool {
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if len(password) < 8 || len(password) > 72 {
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return false
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}
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return true
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}
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func (v *Validator) VerifyImage(data []byte) error {
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r := bytes.NewReader(data)
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cfg, format, err := image.DecodeConfig(r)
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if err != nil {
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slog.Error("decode image config", slog.String("op", "validator.VerifyImage"), slog.Any("error", err))
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return err
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}
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switch format {
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case "jpeg", "png":
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default:
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return ErrUnsupportedFormat
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}
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if cfg.Width > MaxImageWidth || cfg.Height > MaxImageHeight {
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return ErrExceedDimensions
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}
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return nil
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}
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