294 lines
7.0 KiB
Go
294 lines
7.0 KiB
Go
package pkg
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import (
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"context"
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"database/sql/driver"
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"errors"
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"fmt"
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"github.com/jackc/pgtype"
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"html/template"
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"net/http"
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"net/mail"
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"net/url"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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type Attribute struct {
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Key, Val string
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}
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type InputField struct {
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Name string
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Label string
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Type string
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Val string
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Required bool
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Attributes []template.HTMLAttr
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Errors []error
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}
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func (field *InputField) Scan(value interface{}) error {
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if value == nil {
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field.Val = ""
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return nil
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}
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field.Val = fmt.Sprintf("%v", value)
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return nil
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}
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func (field *InputField) Value() (driver.Value, error) {
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return field.Val, nil
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}
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func (field *InputField) FillValue(r *http.Request) {
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field.Val = strings.TrimSpace(r.FormValue(field.Name))
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}
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func (field *InputField) Integer() int {
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value, err := strconv.Atoi(field.Val)
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if err != nil {
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panic(err)
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}
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return value
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}
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func (field *InputField) Float64() float64 {
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value, err := strconv.ParseFloat(field.Val, 64)
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if err != nil {
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panic(err)
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}
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return value
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}
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type SelectOption struct {
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Value string
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Label string
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Group string
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}
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type SelectField struct {
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Name string
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Label string
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Selected []string
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Options []*SelectOption
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Attributes []template.HTMLAttr
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Required bool
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Multiple bool
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EmptyLabel string
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Errors []error
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}
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func (field *SelectField) Scan(value interface{}) error {
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if value == nil {
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field.Selected = append(field.Selected, "")
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return nil
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}
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if str, ok := value.(string); ok {
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if array, err := pgtype.ParseUntypedTextArray(str); err == nil {
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for _, element := range array.Elements {
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field.Selected = append(field.Selected, element)
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}
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return nil
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}
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}
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field.Selected = append(field.Selected, fmt.Sprintf("%v", value))
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return nil
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}
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func (field *SelectField) Value() (driver.Value, error) {
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if field.Selected == nil {
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return "", nil
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}
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return field.Selected[0], nil
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}
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func (field *SelectField) FillValue(r *http.Request) {
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field.Selected = r.Form[field.Name]
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}
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func (field *SelectField) HasValidOptions() bool {
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for _, selected := range field.Selected {
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if !field.isValidOption(selected) {
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return false
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}
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}
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return true
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}
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func (field *SelectField) IsSelected(v string) bool {
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for _, selected := range field.Selected {
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if selected == v {
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return true
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}
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}
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return false
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}
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func (field *SelectField) FindOption(value string) *SelectOption {
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for _, option := range field.Options {
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if option.Value == value {
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return option
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}
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}
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return nil
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}
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func (field *SelectField) isValidOption(selected string) bool {
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return field.FindOption(selected) != nil
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}
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func (field *SelectField) Clear() {
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field.Selected = []string{}
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}
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func MustGetOptions(ctx context.Context, conn *Conn, sql string, args ...interface{}) []*SelectOption {
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rows, err := conn.Query(ctx, sql, args...)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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var options []*SelectOption
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for rows.Next() {
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option := &SelectOption{}
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err = rows.Scan(&option.Value, &option.Label)
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if err != nil {
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panic(err)
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}
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options = append(options, option)
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}
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if rows.Err() != nil {
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panic(rows.Err())
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}
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return options
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}
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func MustGetGroupedOptions(ctx context.Context, conn *Conn, sql string, args ...interface{}) []*SelectOption {
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rows, err := conn.Query(ctx, sql, args...)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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var options []*SelectOption
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for rows.Next() {
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option := &SelectOption{}
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err = rows.Scan(&option.Value, &option.Label, &option.Group)
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if err != nil {
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panic(err)
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}
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options = append(options, option)
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}
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if rows.Err() != nil {
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panic(rows.Err())
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}
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return options
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}
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func mustGetCountryOptions(ctx context.Context, conn *Conn, locale *Locale) []*SelectOption {
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return MustGetOptions(ctx, conn, "select country.country_code, coalesce(i18n.name, country.name) as l10n_name from country left join country_i18n as i18n on country.country_code = i18n.country_code and i18n.lang_tag = $1 order by l10n_name", locale.Language)
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}
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type FormValidator struct {
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Valid bool
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}
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func newFormValidator() *FormValidator {
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return &FormValidator{true}
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}
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func (v *FormValidator) AllOK() bool {
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return v.Valid
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}
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func (v *FormValidator) CheckRequiredInput(field *InputField, message string) bool {
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return v.checkInput(field, field.Val != "", message)
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}
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func (v *FormValidator) CheckValidEmailInput(field *InputField, message string) bool {
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_, err := mail.ParseAddress(field.Val)
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return v.checkInput(field, err == nil, message)
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}
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func (v *FormValidator) CheckValidVATINInput(field *InputField, country string, message string) bool {
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// TODO: actual VATIN validation
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return v.checkInput(field, true, message)
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}
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func (v *FormValidator) CheckValidPhoneInput(field *InputField, country string, message string) bool {
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// TODO: actual phone validation
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return v.checkInput(field, true, message)
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}
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func (v *FormValidator) CheckPasswordConfirmation(password *InputField, confirm *InputField, message string) bool {
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return v.checkInput(confirm, password.Val == confirm.Val, message)
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}
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func (v *FormValidator) CheckValidSelectOption(field *SelectField, message string) bool {
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return v.checkSelect(field, field.HasValidOptions(), message)
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}
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func (v *FormValidator) CheckAtMostOneOfEachGroup(field *SelectField, message string) bool {
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repeated := false
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groups := map[string]bool{}
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for _, selected := range field.Selected {
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option := field.FindOption(selected)
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if exists := groups[option.Group]; exists {
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repeated = true
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break
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}
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groups[option.Group] = true
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}
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return v.checkSelect(field, !repeated, message)
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}
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func (v *FormValidator) CheckValidURL(field *InputField, message string) bool {
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_, err := url.ParseRequestURI(field.Val)
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return v.checkInput(field, err == nil, message)
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}
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func (v *FormValidator) CheckValidDate(field *InputField, message string) bool {
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_, err := time.Parse("2006-01-02", field.Val)
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return v.checkInput(field, err == nil, message)
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}
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func (v *FormValidator) CheckValidPostalCode(ctx context.Context, conn *Conn, field *InputField, country string, message string) bool {
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pattern := "^" + conn.MustGetText(ctx, ".{1,255}", "select postal_code_regex from country where country_code = $1", country) + "$"
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match, err := regexp.MatchString(pattern, field.Val)
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if err != nil {
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panic(err)
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}
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return v.checkInput(field, match, message)
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}
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func (v *FormValidator) CheckValidInteger(field *InputField, min int, max int, message string) bool {
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value, err := strconv.Atoi(field.Val)
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return v.checkInput(field, err == nil && value >= min && value <= max, message)
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}
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func (v *FormValidator) CheckValidDecimal(field *InputField, min float64, max float64, message string) bool {
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value, err := strconv.ParseFloat(field.Val, 64)
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return v.checkInput(field, err == nil && value >= min && value <= max, message)
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}
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func (v *FormValidator) checkInput(field *InputField, ok bool, message string) bool {
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if !ok {
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field.Errors = append(field.Errors, errors.New(message))
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v.Valid = false
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}
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return ok
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}
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func (v *FormValidator) checkSelect(field *SelectField, ok bool, message string) bool {
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if !ok {
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field.Errors = append(field.Errors, errors.New(message))
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v.Valid = false
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}
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return ok
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}
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