mirror of
https://github.com/1f349/tulip.git
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112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
package database
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import (
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"database/sql"
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"encoding/json"
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"fmt"
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"github.com/MrMelon54/pronouns"
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"golang.org/x/text/language"
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"time"
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)
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var (
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_, _, _, _, _ sql.Scanner = &NullStringScanner{}, &NullDateScanner{}, &LocationScanner{}, &LocaleScanner{}, &PronounScanner{}
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_, _, _, _, _ json.Marshaler = &NullStringScanner{}, &NullDateScanner{}, &LocationScanner{}, &LocaleScanner{}, &PronounScanner{}
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_, _, _, _, _ json.Unmarshaler = &NullStringScanner{}, &NullDateScanner{}, &LocationScanner{}, &LocaleScanner{}, &PronounScanner{}
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)
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func marshalValueOrNull(null bool, data any) ([]byte, error) {
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if null {
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return json.Marshal(nil)
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}
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return json.Marshal(data)
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}
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type NullStringScanner struct{ sql.NullString }
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func (s *NullStringScanner) Null() bool { return !s.Valid }
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func (s *NullStringScanner) Scan(src any) error { return s.Scan(src) }
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func (s NullStringScanner) MarshalJSON() ([]byte, error) {
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return marshalValueOrNull(s.Null(), s.String)
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}
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func (s *NullStringScanner) UnmarshalJSON(bytes []byte) error {
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if string(bytes) == "null" {
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return s.Scan(nil)
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}
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var a string
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err := json.Unmarshal(bytes, &a)
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if err != nil {
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return err
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}
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return s.Scan(&a)
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}
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type NullDateScanner struct{ sql.NullTime }
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func (t *NullDateScanner) Null() bool { return !t.Valid }
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func (t *NullDateScanner) Scan(src any) error { return t.NullTime.Scan(src) }
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func (t NullDateScanner) MarshalJSON() ([]byte, error) {
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return marshalValueOrNull(t.Null(), t.Time.UTC().Format(time.DateOnly))
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}
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func (t *NullDateScanner) UnmarshalJSON(bytes []byte) error {
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if string(bytes) == "null" {
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return t.Scan(nil)
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}
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var a string
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err := json.Unmarshal(bytes, &a)
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if err != nil {
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return err
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}
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return t.Scan(&a)
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}
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type LocationScanner struct{ *time.Location }
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func (l *LocationScanner) Scan(src any) error {
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s, ok := src.(string)
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if !ok {
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return fmt.Errorf("unsupported Scan, storing driver.Value type %T into type %T", src, l)
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}
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loc, err := time.LoadLocation(s)
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if err != nil {
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return err
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}
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l.Location = loc
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return nil
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}
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func (l LocationScanner) MarshalJSON() ([]byte, error) { return json.Marshal(l.Location.String()) }
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type LocaleScanner struct{ language.Tag }
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func (l *LocaleScanner) Scan(src any) error {
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s, ok := src.(string)
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if !ok {
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return fmt.Errorf("unsupported Scan, storing driver.Value type %T into type %T", src, l)
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}
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lang, err := language.Parse(s)
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if err != nil {
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return err
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}
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l.Tag = lang
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return nil
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}
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func (l LocaleScanner) MarshalJSON() ([]byte, error) {
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return json.Marshal(l.Tag.String())
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}
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type PronounScanner struct{ pronouns.Pronoun }
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func (p *PronounScanner) Scan(src any) error {
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s, ok := src.(string)
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if !ok {
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return fmt.Errorf("unsupported Scan, storing driver.Value type %T into type %T", src, p)
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}
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pro, err := pronouns.FindPronoun(s)
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if err != nil {
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return err
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}
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p.Pronoun = pro
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return nil
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}
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func (p PronounScanner) MarshalJSON() ([]byte, error) { return json.Marshal(p.Pronoun.String()) }
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