move sdk out to its own module.

sdk/metadata.go

@@ -1,74 +0,0 @@
-package sdk
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-
-	"github.com/nbd-wtf/go-nostr"
-	"github.com/nbd-wtf/go-nostr/nip19"
-)
-
-type ProfileMetadata struct {
-	pubkey string
-	event  *nostr.Event
-
-	Name        string `json:"name,omitempty"`
-	DisplayName string `json:"display_name,omitempty"`
-	About       string `json:"about,omitempty"`
-	Website     string `json:"website,omitempty"`
-	Picture     string `json:"picture,omitempty"`
-	Banner      string `json:"banner,omitempty"`
-	NIP05       string `json:"nip05,omitempty"`
-	LUD16       string `json:"lud16,omitempty"`
-}
-
-func (p ProfileMetadata) Npub() string {
-	v, _ := nip19.EncodePublicKey(p.pubkey)
-	return v
-}
-
-func (p ProfileMetadata) Nprofile(ctx context.Context, sys *System, nrelays int) string {
-	v, _ := nip19.EncodeProfile(p.pubkey, sys.FetchOutboxRelays(ctx, p.pubkey))
-	return v
-}
-
-func FetchProfileMetadata(ctx context.Context, pool *nostr.SimplePool, pubkey string, relays ...string) ProfileMetadata {
-	ctx, cancel := context.WithCancel(ctx)
-	defer cancel()
-
-	ch := pool.SubManyEose(ctx, relays, nostr.Filters{
-		{
-			Kinds:   []int{nostr.KindProfileMetadata},
-			Authors: []string{pubkey},
-			Limit:   1,
-		},
-	})
-
-	for ie := range ch {
-		if m, err := ParseMetadata(ie.Event); err == nil {
-			m.pubkey = pubkey
-			m.event = ie.Event
-			return *m
-		}
-	}
-
-	return ProfileMetadata{pubkey: pubkey}
-}
-
-func ParseMetadata(event *nostr.Event) (*ProfileMetadata, error) {
-	if event.Kind != 0 {
-		return nil, fmt.Errorf("event %s is kind %d, not 0", event.ID, event.Kind)
-	}
-
-	var meta ProfileMetadata
-	if err := json.Unmarshal([]byte(event.Content), &meta); err != nil {
-		cont := event.Content
-		if len(cont) > 100 {
-			cont = cont[0:99]
-		}
-		return nil, fmt.Errorf("failed to parse metadata (%s) from event %s: %w", cont, event.ID, err)
-	}
-
-	return &meta, nil
-}