bootstrap backend nostr adapter

adapter/adapter.go

@@ -1,15 +1,18 @@
 package adapter
 
 import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
 	. "forge.lightcrystal.systems/lightcrystal/underbbs/models"
 	nostr "github.com/nbd-wtf/go-nostr"
 	"strings"
-	"context"
 )
 
 type Adapter interface {
-	Init(Settings, chan Message) error
+	Init(Settings, chan SocketData) error
-	Subscribe(string) error
+	Subscribe(string) []error
 	SendMessage(Message) error
 	Follow(Author) error
 	Unfollow(Author) error
@@ -18,13 +21,13 @@ type Adapter interface {
 }
 
 type NostrAdapter struct {
-  msgChan chan Message
+	msgChan  chan SocketData
 	nickname string
 	privkey  string
 	relays   []*nostr.Relay
 }
 
-func (self *NostrAdapter) Init(settings Settings, msgChan chan Message) error {
+func (self *NostrAdapter) Init(settings Settings, msgChan chan SocketData) error {
 	self.nickname = settings.Nickname
 	self.privkey = *settings.PrivKey
 	self.msgChan = msgChan
@@ -34,7 +37,7 @@ func (self *NostrAdapter) Init(settings Settings, msgChan chan Message) error {
 	relays := strings.Split(*settings.Relays, ",")
 
 	for _, r := range relays {
-    pr := nostr.RelayConnect(ctx, strings.Trim(r)
+		pr, _ := nostr.RelayConnect(ctx, strings.Trim(r, " "))
 		if pr == nil {
 			return errors.New("Relay connection could not be completed")
 		}
@@ -43,7 +46,38 @@ func (self *NostrAdapter) Init(settings Settings, msgChan chan Message) error {
 	return nil
 }
 
-func (self *NostrAdapter)	Subscribe(filter string) error {
+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, 1)
+
+	for _, r := range self.relays {
+
+		sub, err := r.Subscribe(context.Background(), filters)
+		if err != nil {
+			errs = append(errs, err)
+		} else {
+			go func() {
+				for ev := range sub.Events {
+					// try sequentially to encode into an underbbs object
+					// and send it to the appropriate channel
+					m, err := nostrEventToMsg(ev)
+					if err == nil {
+						self.msgChan <- m
+					}
+
+				}
+			}()
+		}
+	}
+
+	if len(errs) > 0 {
+		return errs
+	}
 	return nil
 }
 func (self *NostrAdapter) SendMessage(msg Message) error {
@@ -61,3 +95,24 @@ func (self *NostrAdapter)	GetFollowers() error {
 func (self *NostrAdapter) UpdateMetadata(data interface{}) error {
 	return nil
 }
+
+func nostrEventToMsg(evt *nostr.Event) (Message, error) {
+	m := Message{
+		Protocol: "nostr",
+	}
+	if evt == nil {
+		return m, errors.New("no event")
+	}
+	switch evt.Kind {
+	case nostr.KindTextNote:
+		m.Uri = evt.ID
+		m.Author = Author{
+			Id: evt.PubKey,
+		}
+		m.Created = evt.CreatedAt.Time()
+		m.Content = evt.Content
+		return m, nil
+	default:
+		return m, errors.New(fmt.Sprintf("unsupported event kind: %d", evt.Kind))
+	}
+}

dist/index.html

@@ -22,7 +22,7 @@
     </ul>
   </nav>
   <main>
-    <button id="connectbtn" onclick=">Connect</button>
+    <button id="connectbtn" onclick="connect()">Connect</button>
     <div id="tabbar"></div>
     <div id="tabcontent"></div>
   </main>

go.mod

@@ -1,3 +1,28 @@
 module forge.lightcrystal.systems/lightcrystal/underbbs
 
 go 1.22.0
+
+require (
+	github.com/nbd-wtf/go-nostr v0.31.2
+	golang.org/x/time v0.5.0
+	hacklab.nilfm.cc/quartzgun v0.3.2
+	nhooyr.io/websocket v1.8.11
+)
+
+require (
+	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
+	github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 // indirect
+	github.com/decred/dcrd/crypto/blake256 v1.0.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
+	github.com/gobwas/httphead v0.1.0 // indirect
+	github.com/gobwas/pool v0.2.1 // indirect
+	github.com/gobwas/ws v1.2.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/puzpuzpuz/xsync/v3 v3.0.2 // indirect
+	github.com/tidwall/gjson v1.14.4 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
+	golang.org/x/exp v0.0.0-20230425010034-47ecfdc1ba53 // indirect
+	golang.org/x/sys v0.8.0 // indirect
+)

go.sum

@@ -0,0 +1,43 @@
+github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U=
+github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04=
+github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 h1:KdUfX2zKommPRa+PD0sWZUyXe9w277ABlgELO7H04IM=
+github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/decred/dcrd/crypto/blake256 v1.0.1 h1:7PltbUIQB7u/FfZ39+DGa/ShuMyJ5ilcvdfma9wOH6Y=
+github.com/decred/dcrd/crypto/blake256 v1.0.1/go.mod h1:2OfgNZ5wDpcsFmHmCK5gZTPcCXqlm2ArzUIkw9czNJo=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 h1:8UrgZ3GkP4i/CLijOJx79Yu+etlyjdBU4sfcs2WYQMs=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
+github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
+github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
+github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
+github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
+github.com/gobwas/ws v1.2.0 h1:u0p9s3xLYpZCA1z5JgCkMeB34CKCMMQbM+G8Ii7YD0I=
+github.com/gobwas/ws v1.2.0/go.mod h1:hRKAFb8wOxFROYNsT1bqfWnhX+b5MFeJM9r2ZSwg/KY=
+github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
+github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
+github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
+github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
+github.com/nbd-wtf/go-nostr v0.31.2 h1:PkHCAsSzG0Ce8tfF7LKyvZOjYtCdC+hPh5KfO/Rl1b4=
+github.com/nbd-wtf/go-nostr v0.31.2/go.mod h1:vHKtHyLXDXzYBN0fi/9Y/Q5AD0p+hk8TQVKlldAi0gI=
+github.com/puzpuzpuz/xsync/v3 v3.0.2 h1:3yESHrRFYr6xzkz61LLkvNiPFXxJEAABanTQpKbAaew=
+github.com/puzpuzpuz/xsync/v3 v3.0.2/go.mod h1:VjzYrABPabuM4KyBh1Ftq6u8nhwY5tBPKP9jpmh0nnA=
+github.com/tidwall/gjson v1.14.4 h1:uo0p8EbA09J7RQaflQ1aBRffTR7xedD2bcIVSYxLnkM=
+github.com/tidwall/gjson v1.14.4/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
+github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
+github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
+github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
+github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
+golang.org/x/exp v0.0.0-20230425010034-47ecfdc1ba53 h1:5llv2sWeaMSnA3w2kS57ouQQ4pudlXrR0dCgw51QK9o=
+golang.org/x/exp v0.0.0-20230425010034-47ecfdc1ba53/go.mod h1:V1LtkGg67GoY2N1AnLN78QLrzxkLyJw7RJb1gzOOz9w=
+golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
+golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
+golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
+hacklab.nilfm.cc/quartzgun v0.3.2 h1:PmRFZ/IgsXVWyNn1iOsQ/ZeMnOQIQy0PzFakhXBdZoU=
+hacklab.nilfm.cc/quartzgun v0.3.2/go.mod h1:P6qK4HB0CD/xfyRq8wdEGevAPFDDmv0KCaESSvv93LU=
+nhooyr.io/websocket v1.8.11 h1:f/qXNc2/3DpoSZkHt1DQu6rj4zGC8JmkkLkWss0MgN0=
+nhooyr.io/websocket v1.8.11/go.mod h1:rN9OFWIUwuxg4fR5tELlYC04bXYowCP9GX47ivo2l+c=

models/msg.go

@@ -1,20 +1,17 @@
 package models
 
 import (
+	"encoding/json"
 	"time"
 )
 
-type MessageFactory interface {
-	FromNostr(interface{}) Message
-	FromMasto(interface{}) Message
-}
-
 type Message struct {
+	Uri         string
 	Author      Author
 	Protocol    string
 	Content     string
 	Attachments []Attachment
-	ReplyTo     Message
+	ReplyTo     *Message
 	Replies     []Message
 	Mentions    []Author
 	Created     time.Time
@@ -26,6 +23,8 @@ type Author struct {
 	Name        string
 	ProfileData interface{}
 	Messages    []Message
+	ProfileUri  string
+	ProfilePic  string
 }
 
 type Attachment struct {
@@ -33,3 +32,15 @@ type Attachment struct {
 	Data []uint8
 	Desc string
 }
+
+type SocketData interface {
+	ToDatagram() []byte
+}
+
+func (self Message) ToDatagram() []byte {
+	data, err := json.Marshal(self)
+	if err != nil {
+		panic(err.Error())
+	}
+	return data
+}

server/server.go

@@ -1,35 +1,41 @@
 package server
 
 import (
-  "forge.lightcrystal.systems/lightcrystal/underbbs/models"
+	"context"
-	"hacklab.nilfm.cc/quartzgun/renderer"
-	"net/http"
-  "nhooyr.io/websocket"
 	"encoding/base64"
 	"encoding/json"
+	"errors"
+	"forge.lightcrystal.systems/lightcrystal/underbbs/adapter"
+	"forge.lightcrystal.systems/lightcrystal/underbbs/models"
+	"golang.org/x/time/rate"
+	"hacklab.nilfm.cc/quartzgun/renderer"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"nhooyr.io/websocket"
+	"sync"
+	"time"
 )
 
-
 type Subscriber struct {
 	msgs      chan []byte
 	closeSlow func()
 }
 
-
 type BBSServer struct {
 	subscribeMessageBuffer int
 	publishLimiter         *rate.Limiter
 	logf                   func(f string, v ...interface{})
 	serveMux               http.ServeMux
 	subscribersLock        sync.Mutex
-	subscribers            map[*Subscriber][]models.Adapter
+	subscribers            map[*Subscriber][]adapter.Adapter
 }
 
 func New() *BBSServer {
 	srvr := &BBSServer{
 		subscribeMessageBuffer: 16,
 		logf:                   log.Printf,
-    subscribers:            make(map[*Subscriber][]model.Adapter),   
+		subscribers:            make(map[*Subscriber][]adapter.Adapter),
 	}
 
 	// frontend is here
@@ -42,14 +48,14 @@ func New() *BBSServer {
 	return srvr
 }
 
-func (self *GameTableServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+func (self *BBSServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	self.serveMux.ServeHTTP(w, r)
 }
 
-func (self *GameTableServer) subscribeHandler(w http.ResponseWriter, r *http.Request) {
+func (self *BBSServer) subscribeHandler(w http.ResponseWriter, r *http.Request) {
 
 	c, err := websocket.Accept(w, r, &websocket.AcceptOptions{
-		Subprotocols: [],
+		Subprotocols: []string{},
 	})
 	if err != nil {
 		self.logf("%v", err)
@@ -63,31 +69,64 @@ func (self *GameTableServer) subscribeHandler(w http.ResponseWriter, r *http.Req
 	decoded, err := base64.StdEncoding.DecodeString(data)
 	if err != nil {
 		c.Close(3000, err.Error())
+		return
 	}
 
-	settings := []models.Settings
+	settings := []models.Settings{}
 	// unmarshal the json into the settings array
-	err := json.Unmarshal([]byte(decoded), &settings)
+	err = json.Unmarshal([]byte(decoded), &settings)
-	if (err != nil) {
+	if err != nil {
-	  c.Close(3001, err.Erorr())
+		c.Close(3001, err.Error())
+		return
 	}
 
+	msgc := make(chan models.SocketData)
+
 	// attempt to initialize adapters
-	for i, s := range settings {
+	adapters := make([]adapter.Adapter, 0, 4)
-	  switch(s.Protocol) {
+	for _, s := range settings {
+		var a adapter.Adapter
+		switch s.Protocol {
 		case "nostr":
-	      break;
+			a = &adapter.NostrAdapter{}
+			break
 		case "masto":
-	      break;
+			break
 		default:
-	      break;
+			break
 		}
+		err := a.Init(s, msgc)
+		if err != nil {
+			c.Close(3002, err.Error())
+			return
 		}
-	// keep reference to the adapters?
+
+		adapters = append(adapters, a)
+	}
+
+	// keep reference to the adapters so we can execute commands on them later
+	ctx := r.Context()
+	ctx = c.CloseRead(ctx)
+
+	s := &Subscriber{
+		msgs: make(chan []byte, self.subscribeMessageBuffer),
+		closeSlow: func() {
+			c.Close(websocket.StatusPolicyViolation, "connection too slow to keep up with messages")
+		},
+	}
+
+	self.addSubscriber(s, adapters)
+
+	defer self.deleteSubscriber(s)
 
 	defer c.Close(websocket.StatusInternalError, "")
 
-	err = self.subscribe(r, c)
+	// collect data from the channels injected into the adapters,
+	// and send it back to the client
+	// we block until we stop receiving data on all the input channels
+
+	listen([]chan models.SocketData{msgc}, s.msgs)
+
 	if errors.Is(err, context.Canceled) {
 		return
 	}
@@ -101,42 +140,23 @@ func (self *GameTableServer) subscribeHandler(w http.ResponseWriter, r *http.Req
 	}
 }
 
-func (self *GameTableServer) subscribe(r *http.Request, c *websocket.Conn) error {
+func listen(channels []chan models.SocketData, out chan []byte) {
-	ctx := r.Context()
+	var wg sync.WaitGroup
-	ctx = c.CloseRead(ctx)
+	for _, ch := range channels {
-
+		wg.Add(1)
-	s := &Subscriber{
+		go func(ch <-chan models.SocketData) {
-		msgs: make(chan []byte, self.subscribeMessageBuffer),
+			defer wg.Done()
-		closeSlow: func() {
+			for data := range ch {
-			c.Close(websocket.StatusPolicyViolation, "connection too slow to keep up with messages")
+				out <- data.ToDatagram()
-		},
 			}
+		}(ch)
 
-	// validate the subprotocol
-
-	self.addSubscriber(s, tableKey)
-
-	defer self.deleteSubscriber(s)
-	select {
-	case s.msgs <- self.getCurrentState(tableKey):
-	default:
-		go s.closeSlow()
-	}
-
-	for {
-		select {
-		case msg := <-s.msgs:
-			err := writeTimeout(ctx, time.Second*5, c, msg)
-			if err != nil {
-				return err
-			}
-		case <-ctx.Done():
-			return ctx.Err()
-		}
 	}
+	wg.Wait()
+	close(out)
 }
 
-func (self *GameTableServer) publishHandler(w http.ResponseWriter, r *http.Request) {
+func (self *BBSServer) publishHandler(w http.ResponseWriter, r *http.Request) {
 	if r.Method != "POST" {
 		http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
 		return
@@ -153,7 +173,7 @@ func (self *GameTableServer) publishHandler(w http.ResponseWriter, r *http.Reque
 	w.WriteHeader(http.StatusAccepted)
 }
 
-func (self *GameTableServer) publish(msg []byte) {
+func (self *BBSServer) publish(msg []byte) {
 	self.subscribersLock.Lock()
 	defer self.subscribersLock.Unlock()
 
@@ -163,19 +183,19 @@ func (self *GameTableServer) publish(msg []byte) {
 
 	// send any response from the adapter(s) back to the client
 
-	for s, k := range self.subscribers {
+	/*for s, k := range self.subscribers {
 		// whatever logic to select which subscriber to send back to
-	}
+	}*/
 
 }
 
-func (self *GameTableServer) addSubscriber(s *Subscriber, k models.TableKey) {
+func (self *BBSServer) addSubscriber(s *Subscriber, k []adapter.Adapter) {
 	self.subscribersLock.Lock()
 	self.subscribers[s] = k
 	self.subscribersLock.Unlock()
 }
 
-func (self *GameTableServer) deleteSubscriber(s *Subscriber) {
+func (self *BBSServer) deleteSubscriber(s *Subscriber) {
 	self.subscribersLock.Lock()
 	delete(self.subscribers, s)
 	self.subscribersLock.Unlock()

ts/index.ts

@@ -212,9 +212,10 @@ function connect() {
     }
     subprotocol += "]";
     subprotocol = btoa(subprotocol);
-  // open the websocket connection with settings as subprotocol
     
-    _conn = new WebSocket("/subscribe", subprotocol);
+    // open the websocket connection with settings as subprotocol
+    const wsProto = location.protocol == "https:" ? "wss" : "ws";
+    _conn = new WebSocket(`${wsProto}://${location.host}/subscribe`, subprotocol);
     _("websocket", _conn);
   }
 }

underbbs.go

@@ -7,9 +7,10 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
-	"path/filepath"
 	"strconv"
 	"time"
+
+	"forge.lightcrystal.systems/lightcrystal/underbbs/server"
 )
 
 func main() {
@@ -20,14 +21,14 @@ func main() {
 }
 
 func run() error {
-	l, err := net.Listen("tcp", ":"+strconv.FormatInt(int64(cfg.Port), 10))
+	l, err := net.Listen("tcp", ":"+strconv.FormatInt(int64(9090), 10))
 	if err != nil {
 		return err
 	}
 
-	serviceHandler := // something
+	bbsServer := server.New()
 	s := &http.Server{
-		Handler:      serviceHandler,
+		Handler:      bbsServer,
 		ReadTimeout:  time.Second * 10,
 		WriteTimeout: time.Second * 10,
 	}