82 lines
1.6 KiB
Go
82 lines
1.6 KiB
Go
package domain
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import (
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"fmt"
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"strconv"
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"strings"
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"testing"
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)
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// Email represent email identifier.
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type Email struct {
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user string
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host string
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subAddress string
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}
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const DefaultEmailPartsLength int = 2
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var ErrEmailInvalid error = NewError(ErrorCodeInvalidRequest, "cannot parse email", "")
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// ParseEmail parse strings to email identifier.
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func ParseEmail(src string) (*Email, error) {
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parts := strings.Split(strings.TrimPrefix(src, "mailto:"), "@")
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if len(parts) != DefaultEmailPartsLength {
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return nil, ErrEmailInvalid
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}
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result := &Email{
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user: parts[0],
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host: parts[1],
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subAddress: "",
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}
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if userParts := strings.SplitN(parts[0], `+`, DefaultEmailPartsLength); len(userParts) > 1 {
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result.user = userParts[0]
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result.subAddress = userParts[1]
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}
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return result, nil
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}
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// UnmarshalJSON implements custom unmarshler for JSON.
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func (e *Email) UnmarshalJSON(v []byte) error {
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src, err := strconv.Unquote(string(v))
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if err != nil {
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return fmt.Errorf("Email: UnmarshalJSON: %w", err)
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}
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email, err := ParseEmail(src)
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if err != nil {
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return fmt.Errorf("Email: UnmarshalJSON: %w", err)
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}
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*e = *email
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return nil
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}
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func (e Email) MarshalJSON() ([]byte, error) {
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return []byte(strconv.Quote(e.String())), nil
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}
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// TestEmail returns valid random generated email identifier.
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func TestEmail(tb testing.TB) *Email {
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tb.Helper()
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return &Email{
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user: "user",
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subAddress: "",
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host: "example.com",
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}
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}
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// String returns string representation of email identifier.
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func (e Email) String() string {
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if e.subAddress == "" {
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return e.user + "@" + e.host
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}
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return e.user + "+" + e.subAddress + "@" + e.host
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}
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