.env.template

@@ -1 +1 @@
-SN_API_KEY=
+SN_AUTH_COOKIE=

.gitignore

@@ -1,3 +1,3 @@
-.env*
+.env
 *.sqlite3
-nitterbot
+unpaywall

Makefile

@@ -1,2 +0,0 @@
-nitterbot: *.go go.sum go.mod
-	go build -o nitterbot .

db.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"log"
 
-	sn "github.com/ekzyis/snappy"
+	"github.com/ekzyis/sn-goapi"
 	_ "github.com/mattn/go-sqlite3"
 )
 
@@ -15,7 +15,7 @@ var (
 
 func init() {
 	var err error
-	db, err = sql.Open("sqlite3", "nitterbot.sqlite3")
+	db, err = sql.Open("sqlite3", "unpaywall.sqlite3")
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -42,9 +42,7 @@ func ItemHasComment(parentId int) bool {
 	err := db.QueryRow(`SELECT COUNT(1) FROM comments WHERE parent_id = ?`, parentId).Scan(&count)
 	if err != nil {
 		err = fmt.Errorf("error during item check: %w", err)
-		log.Println(err)
-		// pretend that item has comment to avoid duplicate comments
-		return true
+		log.Fatal(err)
 	}
 	return count > 0
 }
@@ -53,6 +51,6 @@ func SaveComment(comment *sn.Comment) {
 	_, err := db.Exec(`INSERT INTO comments(id, text, parent_id) VALUES (?, ?, ?)`, comment.Id, comment.Text, comment.ParentId)
 	if err != nil {
 		err = fmt.Errorf("error during item insert: %w", err)
-		log.Println(err)
+		log.Fatal(err)
 	}
 }

go.mod

@@ -3,6 +3,11 @@ module git.ekzyis.com/ekzyis/unpaywall
 go 1.21.0
 
 require (
-	github.com/ekzyis/snappy v0.5.3
+	github.com/ekzyis/sn-goapi v0.3.3
 	github.com/mattn/go-sqlite3 v1.14.17
 )
+
+require (
+	github.com/joho/godotenv v1.5.1 // indirect
+	github.com/namsral/flag v1.7.4-pre // indirect
+)

go.sum

@@ -1,4 +1,10 @@
-github.com/ekzyis/snappy v0.5.3 h1:Pq8b2s4WPz5gnHgCoZR2LVqArEVqWeVCyHSVZCawat4=
-github.com/ekzyis/snappy v0.5.3/go.mod h1:BxJwdGlCwUw0Q5pQzBr59weAIS6pkVdivBBaZkkWTSo=
+github.com/ekzyis/sn-goapi v0.3.2 h1:BGY2tOD9IZD40UXUpexysWoC+eLEoUs7JRo9FQ37S6M=
+github.com/ekzyis/sn-goapi v0.3.2/go.mod h1:FObbYr/NXgnXNWU+EwiWKoWQy+wAaRS6AoW3NgsJ/Oo=
+github.com/ekzyis/sn-goapi v0.3.3 h1:5WHGLyYVPwZ12lQrRD40eM+gjWEpDdgdWTshwL8CDEE=
+github.com/ekzyis/sn-goapi v0.3.3/go.mod h1:FObbYr/NXgnXNWU+EwiWKoWQy+wAaRS6AoW3NgsJ/Oo=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/mattn/go-sqlite3 v1.14.17 h1:mCRHCLDUBXgpKAqIKsaAaAsrAlbkeomtRFKXh2L6YIM=
 github.com/mattn/go-sqlite3 v1.14.17/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
+github.com/namsral/flag v1.7.4-pre h1:b2ScHhoCUkbsq0d2C15Mv+VU8bl8hAXV8arnWiOHNZs=
+github.com/namsral/flag v1.7.4-pre/go.mod h1:OXldTctbM6SWH1K899kPZcf65KxJiD7MsceFUpB5yDo=

main.go

@@ -1,15 +1,13 @@
 package main
 
 import (
-	"bufio"
 	"fmt"
 	"log"
-	"os"
 	"regexp"
 	"strings"
 	"time"
 
-	sn "github.com/ekzyis/snappy"
+	"github.com/ekzyis/sn-goapi"
 )
 
 type NostrClient struct {
@@ -18,12 +16,30 @@ type NostrClient struct {
 }
 
 var (
-	TwitterUrlRegexp = regexp.MustCompile(`(?:https?:\/\/)?(?:www\.)?((?:twitter|x)\.com)\/\w+\/status(?:es)?\/\d+`)
+	TwitterUrlRegexp = regexp.MustCompile(`^(?:https?:\/\/)?((www\.)?(twitter|x)\.com)\/`)
 	// references:
 	// - https://github.com/zedeus/nitter/wiki/Instances
 	// - https://status.d420.de/
 	NitterClearnetUrls = []string{
-		"xcancel.com",
+		"nitter.privacydev.net",
+	}
+
+	// since v0.4.0, bot also replaces nostr links with nostr.com so users can pick their client
+	NostrUrlRegexp = regexp.MustCompile(
+		`^(?:https?:\/\/)?(?:www\.)?` +
+			`(?:` +
+			`primal.net\/(?:e\/)?|snort.social\/(?:e\/)?` +
+			`)((note|nevent)[a-zA-Z0-9]+)$`)
+	NostrClients = []NostrClient{
+		// list from nostr.com
+		NostrClient{"https://primal.net/e/", "primal.net"},
+		NostrClient{"https://snort.social/e/", "snort.social"},
+		NostrClient{"https://nostrudel.ninja/#/n/", "nostrudel.ninja"},
+		NostrClient{"https://satellite.earth/thread/", "satellite.earth"},
+		NostrClient{"https://coracle.social/", "coracle.social"},
+		NostrClient{"https://nostter.app/", "nostter.app"},
+		NostrClient{"https://highlighter.com/a/", "highlighter.com"},
+		NostrClient{"https://iris.to/", "iris.to"},
 	}
 )
 
@@ -34,17 +50,41 @@ func WaitUntilNext(d time.Duration) {
 	time.Sleep(dur)
 }
 
+func CheckNotifications() {
+	var prevHasNewNotes bool
+	for {
+		log.Println("Checking notifications ...")
+		hasNewNotes, err := sn.CheckNotifications()
+		if err != nil {
+			SendToNostr(fmt.Sprint(err))
+		} else {
+			if !prevHasNewNotes && hasNewNotes {
+				// only send on "rising edge"
+				SendToNostr("new notifications")
+				log.Println("Forwarded notifications to monitoring")
+			} else if hasNewNotes {
+				log.Println("Notifications already forwarded")
+			}
+		}
+		prevHasNewNotes = hasNewNotes
+		WaitUntilNext(time.Hour)
+	}
+}
+
+func SessionKeepAlive() {
+	for {
+		log.Println("Refresh session using GET /api/auth/session ...")
+		sn.RefreshSession()
+		WaitUntilNext(time.Hour)
+	}
+}
+
 func main() {
-	loadEnv()
-
-	c := sn.NewClient(
-		sn.WithBaseUrl(os.Getenv("SN_BASE_URL")),
-		sn.WithApiKey(os.Getenv("SN_API_KEY")),
-	)
-
+	go CheckNotifications()
+	go SessionKeepAlive()
 	for {
 		log.Println("fetching items ...")
-		r, err := c.Items(&sn.ItemsQuery{Sort: "recent", Type: "all", Limit: 100})
+		r, err := sn.Items(&sn.ItemsQuery{Sort: "recent", Limit: 21})
 		if err != nil {
 			log.Println(err)
 			SendToNostr(fmt.Sprint(err))
@@ -53,68 +93,56 @@ func main() {
 		}
 
 		for _, item := range r.Items {
-			var m []string
-			var comment string
-
-			if m = TwitterUrlRegexp.FindStringSubmatch(item.Url); m != nil {
-				comment = strings.Replace(m[0], m[1], "xcancel.com", 1)
-			} else if m = TwitterUrlRegexp.FindStringSubmatch(item.Text); m != nil {
-				comment = strings.Replace(m[0], m[1], "xcancel.com", 1)
-			}
-
-			if comment != "" {
+			if m := TwitterUrlRegexp.FindStringSubmatch(item.Url); m != nil {
 				log.Printf("item %d is twitter link\n", item.Id)
-
 				if ItemHasComment(item.Id) {
 					log.Printf("item %d already has nitter links comment\n", item.Id)
 					continue
 				}
-
-				cId, err := c.CreateComment(item.Id, comment)
+				comment := "**Twitter2Nitter**\n\nClearnet: "
+				for _, nUrl := range NitterClearnetUrls {
+					nitterLink := strings.Replace(item.Url, m[1], nUrl, 1)
+					comment += fmt.Sprintf("[%s](%s) | ", nUrl, nitterLink)
+				}
+				comment = strings.TrimRight(comment, "| ")
+				comment += "\n\n_Nitter is a free and open source alternative Twitter front-end focused on privacy and performance. "
+				comment += "Click [here](https://github.com/zedeus/nitter) for more information._"
+				cId, err := sn.CreateComment(item.Id, comment)
 				if err != nil {
-					log.Println("create comment failed:", err)
+					log.Println(err)
 					SendToNostr(fmt.Sprint(err))
 					continue
 				}
-
 				log.Printf("created comment %d\n", cId)
 				SaveComment(&sn.Comment{Id: cId, Text: comment, ParentId: item.Id})
+			} else {
+				log.Printf("item %d is not twitter link\n", item.Id)
+			}
+			if m := NostrUrlRegexp.FindStringSubmatch(item.Url); m != nil {
+				log.Printf("item %d is nostr link\n", item.Id)
+				if ItemHasComment(item.Id) {
+					log.Printf("item %d already has nostr links comment\n", item.Id)
+					continue
+				}
+				noteId := m[1]
+				comment := "**Nostr Client Picker**\n\n"
+				for _, client := range NostrClients {
+					comment += fmt.Sprintf("[%s](%s) | ", client.Name, client.Url+noteId)
+				}
+				comment = strings.TrimRight(comment, "| ")
+				cId, err := sn.CreateComment(item.Id, comment)
+				if err != nil {
+					log.Println(err)
+					SendToNostr(fmt.Sprint(err))
+					continue
+				}
+				log.Printf("created comment %d\n", cId)
+				SaveComment(&sn.Comment{Id: cId, Text: comment, ParentId: item.Id})
+			} else {
+				log.Printf("item %d is not nostr link\n", item.Id)
 			}
 		}
 
 		WaitUntilNext(time.Minute)
 	}
 }
-
-func loadEnv() {
-	var (
-		f   *os.File
-		s   *bufio.Scanner
-		err error
-	)
-
-	if f, err = os.Open(".env"); err != nil {
-		log.Fatalf("error opening .env: %v", err)
-	}
-	defer f.Close()
-
-	s = bufio.NewScanner(f)
-	s.Split(bufio.ScanLines)
-	for s.Scan() {
-		line := s.Text()
-		parts := strings.SplitN(line, "=", 2)
-
-		// Check if we have exactly 2 parts (key and value)
-		if len(parts) == 2 {
-			os.Setenv(parts[0], parts[1])
-		} else {
-			log.Fatalf(".env: invalid line: %s\n", line)
-		}
-	}
-
-	// Check for errors during scanning
-	if err = s.Err(); err != nil {
-		fmt.Println("error scanning .env:", err)
-	}
-
-}