75 lines
1.7 KiB
Go
75 lines
1.7 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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)
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// Action represent action for token endpoint supported by IndieAuth.
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//
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// NOTE(toby3d): Encapsulate enums in structs for extra compile-time safety:
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// https://threedots.tech/post/safer-enums-in-go/#struct-based-enums
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type Action struct {
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uid string
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}
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//nolint: gochecknoglobals // structs cannot be constants
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var (
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ActionUndefined = Action{uid: ""}
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// ActionRevoke represent action for revoke token.
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ActionRevoke = Action{uid: "revoke"}
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// ActionTicket represent action for TicketAuth extension.
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ActionTicket = Action{uid: "ticket"}
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)
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var ErrActionUnknown error = NewError(ErrorCodeInvalidRequest, "unknown action method", "")
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// ParseAction parse string identifier of action into struct enum.
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func ParseAction(uid string) (Action, error) {
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switch strings.ToLower(uid) {
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case ActionRevoke.uid:
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return ActionRevoke, nil
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case ActionTicket.uid:
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return ActionTicket, nil
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}
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return ActionUndefined, fmt.Errorf("%w: %s", ErrActionUnknown, uid)
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}
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// UnmarshalForm implements custom unmarshler for form values.
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func (a *Action) UnmarshalForm(v []byte) error {
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action, err := ParseAction(string(v))
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if err != nil {
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return fmt.Errorf("Action: UnmarshalForm: %w", err)
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}
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*a = action
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return nil
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}
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// UnmarshalJSON implements custom unmarshler for JSON.
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func (a *Action) 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("Action: UnmarshalJSON: %w", err)
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}
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action, err := ParseAction(src)
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if err != nil {
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return fmt.Errorf("Action: UnmarshalJSON: %w", err)
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}
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*a = action
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return nil
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}
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// String returns string representation of action.
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func (a Action) String() string {
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return a.uid
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}
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