Add tag support

mastoUtil.go

@@ -147,3 +147,34 @@ func getThread(baseURL, tootId string) (Thread, error) {
 
 	return thread, nil
 }
+
+func getTag(baseURL, tag string) ([]Blog, error) {
+	if baseURL == "" || tag == "" {
+		log.Println("baseURL or tag is empty")
+		return nil, fmt.Errorf("baseURL or tag is empty")
+	}
+
+	resp, err := http.Get(baseURL + "/api/v1/timelines/tag/" + tag)
+	if err != nil {
+		log.Println("Mastodon API request: %s", err)
+		return nil, fmt.Errorf("API request failed")
+	}
+
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		log.Println("Mastodon API response: %s", resp.Status)
+		return nil, fmt.Errorf("API response is not 200")
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Println("Mastodon response body: %s", err)
+		return nil, fmt.Errorf("Failed to read response")
+	}
+
+	var blogs []Blog
+	json.Unmarshal(body, &blogs)
+
+	return blogs, nil
+}

server.go

@@ -73,24 +73,24 @@ func getRawURL(conn *tls.Conn) (string, error) {
 	return fmt.Sprintf("gemini://%s", rawURL), nil
 }
 
-func getPath(conn *tls.Conn) (string, error) {
+func getPath(conn *tls.Conn) (string, string, error) {
 	rawURL, err := getRawURL(conn)
 	if err != nil {
-		return "", err
+		return "", "", err
 	}
 
 	parsedURL, err := url.Parse(rawURL)
 	if err != nil {
-		return "", err
+		return "", "", err
 	}
 
-	return parsedURL.Path, nil
+	return parsedURL.Path, parsedURL.RawQuery, nil
 }
 
 func handleConn(conn *tls.Conn, baseURL, title, home_message string) {
 	defer conn.Close()
 
-	path, err := getPath(conn)
+	path, query, err := getPath(conn)
 	if err != nil {
 		log.Println("get url: %s", err)
 		_, err = fmt.Fprintf(conn, "59 Can't parse request\r\n")
@@ -103,7 +103,7 @@ func handleConn(conn *tls.Conn, baseURL, title, home_message string) {
 
 	// home
 	if path == "" || path == "/" {
-		_, err = fmt.Fprintf(conn, "20 text/gemini\r\n# " + title + "\n\n" + home_message + "\n\n=> /about About MastoGem")
+		_, err = fmt.Fprintf(conn, "20 text/gemini\r\n# " + title + "\n\n" + home_message + "\n\n=> /tag Search for a tag\n=> /about About MastoGem")
 		if err != nil {
 			log.Println("send error: %s", err)
 			return
@@ -164,6 +164,17 @@ Feel free to contribute, send feedback or share ideas.
 			log.Println("send: %s", err)
 			return
 		}
+	} /* tag */ else if strings.HasPrefix(path, "/tag") {
+		if query == "" {
+			_, err = fmt.Fprintf(conn, "10 Enter a tag name\r\n")
+			if err != nil {
+				log.Println("send: %s", err)
+				return
+			}
+			return
+		}
+
+		printTag(conn, baseURL, query)
 	} else {
 		_, err = fmt.Fprintf(conn, "59 Invalid request\r\n")
 		if err != nil {
@@ -269,3 +280,31 @@ func printThread(conn *tls.Conn, baseURL, tootID string) {
 		}
 	}
 }
+
+func printTag(conn *tls.Conn, baseURL, tag string) {
+	toots, err := getTag(baseURL, tag)
+	if err != nil {
+		_, err = fmt.Fprintf(conn, "40 Remote mastodon instance failed\r\n")
+		if err != nil {
+			log.Println("handleConn: %s", err)
+			return
+		}
+		return
+	}
+
+	// Print header
+	_, err = fmt.Fprintf(conn, "20 text/gemini\r\n# Toots for " + tag + "\n")
+	if err != nil {
+		log.Println("handleConn: %s", err)
+		return
+	}
+
+	// Print toots
+	for _, toot := range toots {
+		_, err = fmt.Fprintf(conn, "\n```\n* Posted on " + toot.Date + " by " + toot.Author.Name + " *\n```\n" + removeHTMLTags(toot.Content) + "\n=> /profile/" + toot.Author.Id + " More toots from " + toot.Author.Name + "\n")
+		if err != nil {
+			log.Println("handleConn: %s", err)
+			return
+		}
+	}
+}