type_time.go

package generic

import (
	"database/sql/driver"
	"time"
)

// Time is generic time type structure
type Time struct {
	ValidFlag
	time time.Time
}

// MarshalTime return generic.Time converting of request data
func MarshalTime(x interface{}) (Time, error) {
	v := Time{}
	err := v.Scan(x)
	return v, err
}

// MustTime return generic.Time converting of request data
func MustTime(x interface{}) Time {
	v, err := MarshalTime(x)
	if err != nil {
		panic(err)
	}
	return v
}

// Value implements the driver Valuer interface.
func (v Time) Value() (driver.Value, error) {
	if !v.Valid() {
		return nil, nil
	}
	return v.time, nil
}

// Scan implements the sql.Scanner interface.
func (v *Time) Scan(x interface{}) (err error) {
	v.time, v.ValidFlag, err = asTime(x)
	if err != nil {
		v.ValidFlag = false
		return err
	}
	return
}

// Weak returns Time.Time, but if Time.ValidFlag is false, returns nil.
func (v Time) Weak() interface{} {
	i, _ := v.Value()
	return i
}

// Set sets a specified value.
func (v *Time) Set(x interface{}) (err error) {
	return v.Scan(x)
}

// String implements the Stringer interface.
func (v Time) String() string {
	if !v.Valid() {
		return ""
	}
	return v.time.String()
}

// Time returns value as time.Time
func (v Time) Time() time.Time {
	if !v.Valid() {
		return time.Unix(0, 0)
	}
	return v.time
}

// MarshalJSON implements the json.Marshaler interface.
func (v Time) MarshalJSON() ([]byte, error) {
	if !v.Valid() {
		return nullBytes, nil
	}
	return v.time.MarshalJSON()
}

// UnmarshalJSON implements the json.Unmarshaler interface.
func (v *Time) UnmarshalJSON(data []byte) error {
	if len(data) == 0 {
		return nil
	}
	if err := v.time.UnmarshalJSON(data); err != nil {
		return err
	}
	v.ValidFlag = true
	return nil
}