65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
package graphql
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"time"
|
|
)
|
|
|
|
// Time is a custom GraphQL type to represent an instant in time. It has to be added to a schema
|
|
// via "scalar Time" since it is not a predeclared GraphQL type like "ID".
|
|
type Time struct {
|
|
time.Time
|
|
}
|
|
|
|
// ImplementsGraphQLType maps this custom Go type
|
|
// to the graphql scalar type in the schema.
|
|
func (Time) ImplementsGraphQLType(name string) bool {
|
|
return name == "Time"
|
|
}
|
|
|
|
// UnmarshalGraphQL is a custom unmarshaler for Time
|
|
//
|
|
// This function will be called whenever you use the
|
|
// time scalar as an input
|
|
func (t *Time) UnmarshalGraphQL(input interface{}) error {
|
|
switch input := input.(type) {
|
|
case time.Time:
|
|
t.Time = input
|
|
return nil
|
|
case string:
|
|
var err error
|
|
t.Time, err = time.Parse(time.RFC3339, input)
|
|
return err
|
|
case []byte:
|
|
var err error
|
|
t.Time, err = time.Parse(time.RFC3339, string(input))
|
|
return err
|
|
case int32:
|
|
t.Time = time.Unix(int64(input), 0)
|
|
return nil
|
|
case int64:
|
|
if input >= 1e10 {
|
|
sec := input / 1e9
|
|
nsec := input - (sec * 1e9)
|
|
t.Time = time.Unix(sec, nsec)
|
|
} else {
|
|
t.Time = time.Unix(input, 0)
|
|
}
|
|
return nil
|
|
case float64:
|
|
t.Time = time.Unix(int64(input), 0)
|
|
return nil
|
|
default:
|
|
return fmt.Errorf("wrong type for Time: %T", input)
|
|
}
|
|
}
|
|
|
|
// MarshalJSON is a custom marshaler for Time
|
|
//
|
|
// This function will be called whenever you
|
|
// query for fields that use the Time type
|
|
func (t Time) MarshalJSON() ([]byte, error) {
|
|
return json.Marshal(t.Time)
|
|
}
|