100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
package salty
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import (
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"bytes"
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"context"
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"crypto/sha256"
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"fmt"
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"log"
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"path"
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"strings"
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"github.com/keys-pub/keys"
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"github.com/oklog/ulid/v2"
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"github.com/sour-is/ev/pkg/es/event"
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"github.com/sour-is/ev/pkg/gql"
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)
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type SaltyUser struct {
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name string
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pubkey *keys.EdX25519PublicKey
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inbox ulid.ULID
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event.AggregateRoot
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}
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var _ event.Aggregate = (*SaltyUser)(nil)
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// ApplyEvent applies the event to the aggrigate state
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func (a *SaltyUser) ApplyEvent(lis ...event.Event) {
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for _, e := range lis {
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switch e := e.(type) {
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case *UserRegistered:
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a.name = e.Name
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a.pubkey = e.Pubkey
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a.inbox = e.EventMeta().EventID
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a.SetStreamID(a.streamID())
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default:
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log.Printf("unknown event %T", e)
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}
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}
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}
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func (a *SaltyUser) streamID() string {
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return fmt.Sprintf("saltyuser-%x", sha256.Sum256([]byte(strings.ToLower(a.name))))
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}
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func (a *SaltyUser) OnUserRegister(name string, pubkey *keys.EdX25519PublicKey) error {
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event.Raise(a, &UserRegistered{Name: name, Pubkey: pubkey})
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return nil
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}
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func (a *SaltyUser) Nick() string { return a.name }
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func (a *SaltyUser) Inbox() string { return a.inbox.String() }
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func (a *SaltyUser) Pubkey() string { return a.pubkey.String() }
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func (s *SaltyUser) Endpoint(ctx context.Context) string {
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svc := gql.FromContext[contextKey, *service](ctx, saltyKey)
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return path.Join(svc.BaseURL(), s.inbox.String())
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}
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type UserRegistered struct {
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Name string
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Pubkey *keys.EdX25519PublicKey
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eventMeta event.Meta
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}
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var _ event.Event = (*UserRegistered)(nil)
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func (e *UserRegistered) EventMeta() event.Meta {
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if e == nil {
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return event.Meta{}
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}
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return e.eventMeta
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}
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func (e *UserRegistered) SetEventMeta(m event.Meta) {
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if e != nil {
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e.eventMeta = m
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}
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}
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func (e *UserRegistered) MarshalBinary() (text []byte, err error) {
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var b bytes.Buffer
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b.WriteString(e.Name)
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b.WriteRune('\t')
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b.WriteString(e.Pubkey.String())
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return b.Bytes(), nil
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}
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func (e *UserRegistered) UnmarshalBinary(b []byte) error {
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name, pub, ok := bytes.Cut(b, []byte{'\t'})
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if !ok {
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return fmt.Errorf("parse error")
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}
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var err error
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e.Name = string(name)
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e.Pubkey, err = keys.NewEdX25519PublicKeyFromID(keys.ID(pub))
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return err
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}
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