115 lines
2.4 KiB
Go
115 lines
2.4 KiB
Go
package adapter
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
. "forge.lightcrystal.systems/lightcrystal/underbbs/models"
|
|
nostr "github.com/nbd-wtf/go-nostr"
|
|
"strings"
|
|
)
|
|
|
|
type NostrAdapter struct {
|
|
data chan SocketData
|
|
nickname string
|
|
privkey string
|
|
relays []*nostr.Relay
|
|
}
|
|
|
|
func (self *NostrAdapter) Name() string {
|
|
return self.nickname
|
|
}
|
|
|
|
func (self *NostrAdapter) Init(settings Settings, data chan SocketData) error {
|
|
self.nickname = settings.Nickname
|
|
self.privkey = *settings.PrivKey
|
|
self.data = data
|
|
|
|
ctx := context.Background()
|
|
|
|
for _, r := range settings.Relays {
|
|
pr, _ := nostr.RelayConnect(ctx, strings.Trim(r, " "))
|
|
if pr == nil {
|
|
return errors.New("Relay connection could not be completed")
|
|
}
|
|
self.relays = append(self.relays, pr)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (self *NostrAdapter) Subscribe(filter string) []error {
|
|
var filters nostr.Filters
|
|
err := json.Unmarshal([]byte(filter), &filters)
|
|
if err != nil {
|
|
return []error{err}
|
|
}
|
|
|
|
errs := make([]error, 0)
|
|
|
|
fmt.Print("unmarshalled filter from json; iterating through relays to subscribe..")
|
|
|
|
for _, r := range self.relays {
|
|
fmt.Print(".")
|
|
sub, err := r.Subscribe(context.Background(), filters)
|
|
if err != nil {
|
|
errs = append(errs, err)
|
|
} else {
|
|
go func() {
|
|
for ev := range sub.Events {
|
|
fmt.Print("!")
|
|
// try sequentially to encode into an underbbs object
|
|
// and send it to the appropriate channel
|
|
m, err := self.nostrEventToMsg(ev)
|
|
if err == nil {
|
|
self.data <- m
|
|
}
|
|
|
|
}
|
|
}()
|
|
}
|
|
fmt.Println()
|
|
}
|
|
|
|
if len(errs) > 0 {
|
|
fmt.Println("subscription operation completed with errors")
|
|
return errs
|
|
}
|
|
fmt.Println("subscription operation completed without errors")
|
|
return nil
|
|
}
|
|
|
|
func (self *NostrAdapter) Fetch(etype string, ids []string) error {
|
|
return nil
|
|
}
|
|
|
|
func (self *NostrAdapter) Do(action string) error {
|
|
return nil
|
|
}
|
|
|
|
func (self *NostrAdapter) DefaultSubscriptionFilter() string {
|
|
return "[{\"kinds\":[1]}]"
|
|
}
|
|
|
|
func (self *NostrAdapter) nostrEventToMsg(evt *nostr.Event) (Message, error) {
|
|
m := Message{
|
|
Datagram: Datagram{
|
|
Protocol: "nostr",
|
|
Adapter: self.nickname,
|
|
Type: "message",
|
|
},
|
|
}
|
|
if evt == nil {
|
|
return m, errors.New("no event")
|
|
}
|
|
switch evt.Kind {
|
|
case nostr.KindTextNote:
|
|
m.Id = evt.ID
|
|
m.Author = evt.PubKey
|
|
m.Created = evt.CreatedAt.Time().UnixMilli()
|
|
m.Content = evt.Content
|
|
return m, nil
|
|
default:
|
|
return m, errors.New(fmt.Sprintf("unsupported event kind: %d", evt.Kind))
|
|
}
|
|
}
|