12 5ad39add 2021-04-27 op "path/filepath"
16 deee939b 2022-01-08 op "github.com/andybalholm/cascadia"
17 7cc05214 2021-04-27 op irc "github.com/fluffle/goirc/client"
18 5659492e 2021-12-02 op "golang.org/x/net/html"
22 88370dfe 2021-11-07 op baseurl = flag.String("baseurl", "gemini://m2i.omarpolo.com", "base url")
23 7cc05214 2021-04-27 op matrixOutDir = flag.String("matrix-out", "", "matrix out directory")
25 88370dfe 2021-11-07 op msgRe = regexp.MustCompile(`https://.*/[^\s]+\.(txt|png|jpg|jpeg|gif)`)
26 c6fd4def 2021-07-30 op channel = "#gemini-it"
28 88370dfe 2021-11-07 op tooLongRe = regexp.MustCompile(`full message at (https://libera.ems.host/.*)[)]`)
30 4852f411 2021-12-02 op httplink = regexp.MustCompile(`https?://[^\s)]+`)
31 cfb62e6e 2022-01-08 op gemlink = regexp.MustCompile(`gemini://[^\s)]+`)
34 7cc05214 2021-04-27 op func matrix2gemini(conn *irc.Conn, line *irc.Line) {
35 ae97f748 2021-07-30 op matches := msgRe.FindAllString(line.Text(), -1)
37 7cc05214 2021-04-27 op // it's not a good idea to defer inside a loop, but we know
38 7cc05214 2021-04-27 op // len(matches) is small (usually just 1). Morover, I like
39 7cc05214 2021-04-27 op // living in danger!
41 7cc05214 2021-04-27 op for _, link := range matches {
42 7cc05214 2021-04-27 op resp, err := http.Get(link)
43 7cc05214 2021-04-27 op if err != nil {
46 7cc05214 2021-04-27 op fmt.Sprintf("failed to download %q: %s", link, err),
50 7cc05214 2021-04-27 op defer resp.Body.Close()
52 ae97f748 2021-07-30 op ext := path.Ext(link)
53 88370dfe 2021-11-07 op tmpfile, err := ioutil.TempFile(*matrixOutDir, "message-*"+ext)
54 7cc05214 2021-04-27 op if err != nil {
55 7cc05214 2021-04-27 op conn.Privmsg(channel, fmt.Sprintf("failed to tmpfile: %s", err))
58 7cc05214 2021-04-27 op defer tmpfile.Close()
60 7cc05214 2021-04-27 op io.Copy(tmpfile, resp.Body)
65 5ad39add 2021-04-27 op "better: %s/%s",
67 5ad39add 2021-04-27 op filepath.Base(tmpfile.Name()),
73 88370dfe 2021-11-07 op func messageTooLong(conn *irc.Conn, line *irc.Line) {
74 88370dfe 2021-11-07 op matches := tooLongRe.FindStringSubmatch(line.Text())
75 88370dfe 2021-11-07 op if len(matches) != 2 {
79 88370dfe 2021-11-07 op url := matches[1]
81 88370dfe 2021-11-07 op resp, err := http.Get(url)
82 88370dfe 2021-11-07 op if err != nil {
85 88370dfe 2021-11-07 op fmt.Sprintf("failed to download %q: %s", url, err),
89 88370dfe 2021-11-07 op defer resp.Body.Close()
91 88370dfe 2021-11-07 op sb := &strings.Builder{}
92 88370dfe 2021-11-07 op if _, err := io.Copy(sb, resp.Body); err != nil {
95 88370dfe 2021-11-07 op fmt.Sprintf("failed to read body of %q: %s", url, err),
100 88370dfe 2021-11-07 op conn.Privmsg(channel, fmt.Sprintf("%s ha detto:", line.Nick))
101 88370dfe 2021-11-07 op for _, line := range strings.Split(sb.String(), "\n") {
102 88370dfe 2021-11-07 op conn.Privmsg(
109 3adf60f8 2021-12-02 op func stringifyNode(node *html.Node) string {
112 3adf60f8 2021-12-02 op if node.Type == html.TextNode {
113 3adf60f8 2021-12-02 op return node.Data
116 3adf60f8 2021-12-02 op for child := node.FirstChild; child != nil; child = child.NextSibling {
117 3adf60f8 2021-12-02 op s += stringifyNode(child)
123 cfb62e6e 2022-01-08 op func wwwpagetitle(conn *irc.Conn, line *irc.Line) {
124 5659492e 2021-12-02 op matches := httplink.FindAllString(line.Text(), -1)
126 5659492e 2021-12-02 op for _, link := range matches {
127 d26637f1 2021-12-02 op log.Println("fetching", link, "...")
129 5659492e 2021-12-02 op resp, err := http.Get(link)
130 5659492e 2021-12-02 op if err != nil {
133 5659492e 2021-12-02 op defer resp.Body.Close()
135 5659492e 2021-12-02 op doc, err := html.Parse(resp.Body)
136 5659492e 2021-12-02 op if err != nil {
140 deee939b 2022-01-08 op sel := cascadia.MustCompile("head > title")
141 deee939b 2022-01-08 op n := cascadia.Query(doc, sel)
143 deee939b 2022-01-08 op if n == nil {
147 0c3e9562 2022-01-08 op title := stringifyNode(n)
148 0c3e9562 2022-01-08 op if len(title) > 50 {
149 0c3e9562 2022-01-08 op title = title[:50]
151 deee939b 2022-01-08 op conn.Privmsg(channel, stringifyNode(n))
155 cfb62e6e 2022-01-08 op func gempagetitle(conn *irc.Conn, line *irc.Line) {
156 cfb62e6e 2022-01-08 op matches := gemlink.FindAllString(line.Text(), -1)
158 cfb62e6e 2022-01-08 op for _, link := range matches {
159 cfb62e6e 2022-01-08 op log.Println("fetching", link, "...")
160 cfb62e6e 2022-01-08 op title, err := geminiTitle(link)
161 cfb62e6e 2022-01-08 op if err != nil {
165 cfb62e6e 2022-01-08 op conn.Privmsg(channel, title)
169 56842f40 2022-06-29 op func pong(conn *irc.Conn, line *irc.Line) {
170 56842f40 2022-06-29 op if line.Text() != ",ping" {
173 56842f40 2022-06-29 op conn.Privmsg(
179 7cc05214 2021-04-27 op func dostuff(conn *irc.Conn, line *irc.Line) {
180 7cc05214 2021-04-27 op matrix2gemini(conn, line)
181 88370dfe 2021-11-07 op messageTooLong(conn, line)
182 cfb62e6e 2022-01-08 op wwwpagetitle(conn, line)
183 cfb62e6e 2022-01-08 op gempagetitle(conn, line)
184 56842f40 2022-06-29 op pong(conn, line)
188 7cc05214 2021-04-27 op func main() {
191 7cc05214 2021-04-27 op cfg := irc.NewConfig("gemitbot")
192 7cc05214 2021-04-27 op cfg.SSL = true
193 d0286003 2021-07-30 op cfg.SSLConfig = &tls.Config{ServerName: "irc.libera.chat"}
194 d0286003 2021-07-30 op cfg.Server = "irc.libera.chat:7000"
195 7cc05214 2021-04-27 op cfg.NewNick = func(n string) string { return n + "^" }
197 7cc05214 2021-04-27 op c := irc.Client(cfg)
199 7cc05214 2021-04-27 op c.HandleFunc(irc.CONNECTED, func(conn *irc.Conn, line *irc.Line) {
200 7cc05214 2021-04-27 op log.Println("connected, joining", channel)
201 7cc05214 2021-04-27 op conn.Join(channel)
204 7cc05214 2021-04-27 op c.HandleFunc(irc.PRIVMSG, dostuff)
205 7cc05214 2021-04-27 op c.HandleFunc(irc.ACTION, dostuff)
207 7cc05214 2021-04-27 op quit := make(chan bool)
209 7cc05214 2021-04-27 op c.HandleFunc(irc.DISCONNECTED, func(conn *irc.Conn, line *irc.Line) {
213 7cc05214 2021-04-27 op if err := c.Connect(); err != nil {
214 7cc05214 2021-04-27 op log.Fatalln("connection error:", err)