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