.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 .

README.md

@@ -1,6 +1,6 @@
-# nitterbot
+# unpaywall
 
-This is a [Stacker News bot](https://stacker.news/nitter) that fetches every minute all recent posts.
+This is a [Stacker News bot](https://stacker.news/unpaywall) that fetches every minute all recent posts.
 
 If a post is a twitter link, it adds a comment with nitter links and stores the comment + item id in a sqlite3 database.
 

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 +3,8 @@ module git.ekzyis.com/ekzyis/unpaywall
 go 1.21.0
 
 require (
-	github.com/ekzyis/snappy v0.5.3
-	github.com/mattn/go-sqlite3 v1.14.17
+	github.com/ekzyis/sn-goapi v0.3.0 // indirect
+	github.com/joho/godotenv v1.5.1 // indirect
+	github.com/mattn/go-sqlite3 v1.14.17 // indirect
+	github.com/namsral/flag v1.7.4-pre // indirect
 )

go.sum

@@ -1,4 +1,14 @@
-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 v0.2.0 h1:k5YJlG+OguQEQRlbS5KghUttbfJaEkfvIfqB8B133FY=
+github.com/ekzyis/sn-goapi v0.2.0/go.mod h1:FObbYr/NXgnXNWU+EwiWKoWQy+wAaRS6AoW3NgsJ/Oo=
+github.com/ekzyis/sn-goapi v0.2.1-0.20230823005215-5fb6668b6270 h1:aVDLDhrRsxP+if+ujCOpydFapeei2YL47Cp1ghgbJ2I=
+github.com/ekzyis/sn-goapi v0.2.1-0.20230823005215-5fb6668b6270/go.mod h1:FObbYr/NXgnXNWU+EwiWKoWQy+wAaRS6AoW3NgsJ/Oo=
+github.com/ekzyis/sn-goapi v0.2.1-0.20230823015232-6a259372b331 h1:NpCmANlADOcRYxKe3GfaYcfra2fjTpW65M36Dq65LX8=
+github.com/ekzyis/sn-goapi v0.2.1-0.20230823015232-6a259372b331/go.mod h1:FObbYr/NXgnXNWU+EwiWKoWQy+wAaRS6AoW3NgsJ/Oo=
+github.com/ekzyis/sn-goapi v0.3.0 h1:pXRbD2iAMHvUC/+gZKXPRwInP4PuABEC1qQc+DWARlE=
+github.com/ekzyis/sn-goapi v0.3.0/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

@@ -1,30 +1,18 @@
 package main
 
 import (
-	"bufio"
 	"fmt"
 	"log"
-	"os"
 	"regexp"
 	"strings"
 	"time"
 
-	sn "github.com/ekzyis/snappy"
+	"github.com/ekzyis/sn-goapi"
 )
 
-type NostrClient struct {
-	Url  string
-	Name string
-}
-
 var (
-	TwitterUrlRegexp = regexp.MustCompile(`(?:https?:\/\/)?(?:www\.)?((?:twitter|x)\.com)\/\w+\/status(?:es)?\/\d+`)
-	// references:
-	// - https://github.com/zedeus/nitter/wiki/Instances
-	// - https://status.d420.de/
-	NitterClearnetUrls = []string{
-		"xcancel.com",
-	}
+	TwitterUrlRegexp = regexp.MustCompile(`^(?:https?:\/\/)?((www\.)?(twitter|x)\.com)\/`)
+	NitterUrls       = []string{"nitter.net", "nitter.it", "nitter.cz"}
 )
 
 func WaitUntilNext(d time.Duration) {
@@ -34,87 +22,73 @@ 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))
 			WaitUntilNext(time.Minute)
 			continue
 		}
 
 		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 := "Nitter links:\n\n"
+				for _, nUrl := range NitterUrls {
+					nitterLink := strings.Replace(item.Url, m[1], nUrl, 1)
+					comment += nitterLink + "\n"
+				}
+				comment += "\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)
 					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)
 			}
 		}
 
 		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)
-	}
-
-}