1 package followschema
2
3 import (
4 "encoding/json"
5 "fmt"
6 "io"
7 "regexp"
8 )
9
10 var re = regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
11
12 type Email string
13
14 func (value *Email) UnmarshalGQL(v interface{}) error {
15 input, ok := v.(string)
16 if !ok {
17 return fmt.Errorf("email expects a string value")
18 }
19 if !re.MatchString(input) {
20 return fmt.Errorf("invalid email format")
21 }
22 *value = Email(input)
23 return nil
24 }
25
26 func (value Email) MarshalGQL(w io.Writer) {
27 output, _ := json.Marshal(string(value))
28 w.Write(output)
29 }
30
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