538 lines
13 KiB
Go
538 lines
13 KiB
Go
package pkg
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import (
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"context"
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"database/sql"
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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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"io"
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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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var tagsRegex = regexp.MustCompile("[^a-z0-9-]+")
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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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Is 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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switch v := value.(type) {
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case time.Time:
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if field.Type == "date" {
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field.Val = v.Format("2006-01-02")
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} else if field.Type == "time" {
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field.Val = v.Format("15:04")
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} else {
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field.Val = v.Format(time.RFC3339)
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}
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default:
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field.Val = fmt.Sprintf("%v", v)
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}
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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) HasValue() bool {
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return field.Val != ""
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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) IntegerOrNil() interface{} {
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if field.Val != "" {
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if i := field.Integer(); i > 0 {
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return i
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}
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}
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return nil
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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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func (field *InputField) String() string {
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return field.Val
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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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return field.String(), nil
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}
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func (field *SelectField) String() string {
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if field.Selected == nil {
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return ""
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}
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return field.Selected[0]
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}
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func (field *SelectField) OrNull() interface{} {
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if field.String() == "" {
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return sql.NullString{}
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}
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return field
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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 (field *SelectField) HasValue() bool {
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return len(field.Selected) > 0 && field.Selected[0] != ""
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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 RadioOption struct {
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Value string
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Label string
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}
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type RadioField struct {
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Name string
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Label string
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Selected string
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Options []*RadioOption
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Attributes []template.HTMLAttr
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Required bool
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Errors []error
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}
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func (field *RadioField) Scan(value interface{}) error {
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if value == nil {
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field.Selected = ""
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return nil
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}
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field.Selected = fmt.Sprintf("%v", value)
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return nil
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}
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func (field *RadioField) Value() (driver.Value, error) {
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return field.Selected, nil
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}
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func (field *RadioField) String() string {
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return field.Selected
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}
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func (field *RadioField) FillValue(r *http.Request) {
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field.Selected = strings.TrimSpace(r.FormValue(field.Name))
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}
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func (field *RadioField) IsSelected(v string) bool {
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return field.Selected == v
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}
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func (field *RadioField) FindOption(value string) *RadioOption {
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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 *RadioField) isValidOption(selected string) bool {
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return field.FindOption(selected) != nil
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}
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type CheckField struct {
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Name string
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Label string
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Checked bool
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Attributes []template.HTMLAttr
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Required bool
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Errors []error
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}
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func (field *CheckField) FillValue(r *http.Request) {
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field.Checked = len(r.Form[field.Name]) > 0
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}
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func (field *CheckField) Scan(value interface{}) error {
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if value == nil {
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field.Checked = false
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return nil
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}
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switch v := value.(type) {
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case bool:
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field.Checked = v
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default:
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field.Checked, _ = strconv.ParseBool(fmt.Sprintf("%v", v))
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}
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return nil
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}
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func (field *CheckField) Value() (driver.Value, error) {
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return field.Checked, nil
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}
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type FileField struct {
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Name string
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Label string
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MaxSize int64
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OriginalFileName string
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ContentType string
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Content []byte
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Required bool
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Errors []error
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}
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func (field *FileField) FillValue(r *http.Request) error {
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file, header, err := r.FormFile(field.Name)
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if err != nil {
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if err == http.ErrMissingFile {
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return nil
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}
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return err
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}
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defer file.Close()
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field.Content, err = io.ReadAll(file)
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if err != nil {
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return err
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}
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field.OriginalFileName = header.Filename
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field.ContentType = header.Header.Get("Content-Type")
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if len(field.Content) == 0 {
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field.ContentType = http.DetectContentType(field.Content)
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}
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return nil
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}
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type TagsField struct {
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Name string
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Label string
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Tags []string
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Attributes []template.HTMLAttr
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Required bool
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Errors []error
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}
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func (field *TagsField) Value() (driver.Value, error) {
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if field.Tags == nil {
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return []string{}, nil
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}
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return field.Tags, nil
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}
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func (field *TagsField) HasValue() bool {
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return len(field.Tags) > 0 && field.Tags[0] != ""
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}
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func (field *TagsField) Scan(value interface{}) error {
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if value == nil {
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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.Tags = append(field.Tags, element)
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}
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return nil
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}
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}
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field.Tags = append(field.Tags, fmt.Sprintf("%v", value))
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return nil
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}
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func (field *TagsField) FillValue(r *http.Request) {
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field.Tags = strings.Split(tagsRegex.ReplaceAllString(r.FormValue(field.Name), ","), ",")
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if len(field.Tags) == 1 && len(field.Tags[0]) == 0 {
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field.Tags = []string{}
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}
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}
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func (field *TagsField) String() string {
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return strings.Join(field.Tags, ",")
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}
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type ToggleField struct {
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Name string
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Label string
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Selected string
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FirstOption *ToggleOption
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SecondOption *ToggleOption
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Attributes []template.HTMLAttr
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Errors []error
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}
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type ToggleOption struct {
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Value string
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Label string
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Description string
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}
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func (field *ToggleField) FillValue(r *http.Request) {
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field.Selected = strings.TrimSpace(r.FormValue(field.Name))
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if field.Selected != field.FirstOption.Value && field.Selected != field.SecondOption.Value {
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field.Selected = field.FirstOption.Value
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}
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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) CheckInputMinLength(field *InputField, min int, message string) bool {
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return v.checkInput(field, len(field.Val) >= min, 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(ctx context.Context, conn *Conn, field *InputField, country string, message string) bool {
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return v.checkInput(field, conn.MustGetBool(ctx, "select input_is_valid($1 || $2, 'vatin')", country, field.Val), message)
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}
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func (v *FormValidator) CheckValidPhoneInput(ctx context.Context, conn *Conn, field *InputField, country string, message string) bool {
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return v.checkInput(field, conn.MustGetBool(ctx, "select input_is_valid_phone($1, $2)", field.Val, country), message)
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}
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func (v *FormValidator) CheckValidIBANInput(ctx context.Context, conn *Conn, field *InputField, message string) bool {
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return v.checkInput(field, conn.MustGetBool(ctx, "select input_is_valid($1, 'iban')", field.Val), message)
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}
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func (v *FormValidator) CheckValidBICInput(ctx context.Context, conn *Conn, field *InputField, message string) bool {
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return v.checkInput(field, conn.MustGetBool(ctx, "select input_is_valid($1, 'bic')", field.Val), 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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