commit 88370dfe7b3c35f7d841ab7fb32434be38812b25
from: Omar Polo <op@omarpolo.com>
date: Sun Nov 07 14:46:10 2021 UTC

download messages that are too long and re-send them to irc

commit - 29a1c0f1221ba2600ad3f55ecd547357b86906cf
commit + 88370dfe7b3c35f7d841ab7fb32434be38812b25
blob - b83b09fcf42c5d16a15177396bd631c1e2ece8f5
blob + bb46e0405388b275de9287aecdea2a0fd347c5a3
--- main.go
+++ main.go
@@ -11,16 +11,19 @@ import (
 	"path"
 	"path/filepath"
 	"regexp"
+	"strings"
 
 	irc "github.com/fluffle/goirc/client"
 )
 
 var (
-	baseurl = flag.String("baseurl", "gemini://m2i.omarpolo.com", "base url")
+	baseurl      = flag.String("baseurl", "gemini://m2i.omarpolo.com", "base url")
 	matrixOutDir = flag.String("matrix-out", "", "matrix out directory")
 
-	msgRe = regexp.MustCompile(`https://.*/[^\s]+\.(txt|png|jpg|jpeg|gif)`)
+	msgRe   = regexp.MustCompile(`https://.*/[^\s]+\.(txt|png|jpg|jpeg|gif)`)
 	channel = "#gemini-it"
+
+	tooLongRe = regexp.MustCompile(`full message at (https://libera.ems.host/.*)[)]`)
 )
 
 func matrix2gemini(conn *irc.Conn, line *irc.Line) {
@@ -42,7 +45,7 @@ func matrix2gemini(conn *irc.Conn, line *irc.Line) {
 		defer resp.Body.Close()
 
 		ext := path.Ext(link)
-		tmpfile, err := ioutil.TempFile(*matrixOutDir, "message-*" + ext)
+		tmpfile, err := ioutil.TempFile(*matrixOutDir, "message-*"+ext)
 		if err != nil {
 			conn.Privmsg(channel, fmt.Sprintf("failed to tmpfile: %s", err))
 			return
@@ -62,8 +65,45 @@ func matrix2gemini(conn *irc.Conn, line *irc.Line) {
 	}
 }
 
+func messageTooLong(conn *irc.Conn, line *irc.Line) {
+	matches := tooLongRe.FindStringSubmatch(line.Text())
+	if len(matches) != 2 {
+		return
+	}
+
+	url := matches[1]
+
+	resp, err := http.Get(url)
+	if err != nil {
+		conn.Privmsg(
+			channel,
+			fmt.Sprintf("failed to download %q: %s", url, err),
+		)
+		return
+	}
+	defer resp.Body.Close()
+
+	sb := &strings.Builder{}
+	if _, err := io.Copy(sb, resp.Body); err != nil {
+		conn.Privmsg(
+			channel,
+			fmt.Sprintf("failed to read body of %q: %s", url, err),
+		)
+		return
+	}
+
+	conn.Privmsg(channel, fmt.Sprintf("%s ha detto:", line.Nick))
+	for _, line := range strings.Split(sb.String(), "\n") {
+		conn.Privmsg(
+			channel,
+			line,
+		)
+	}
+}
+
 func dostuff(conn *irc.Conn, line *irc.Line) {
 	matrix2gemini(conn, line)
+	messageTooLong(conn, line)
 	// ...
 }