added subreddit image request

bunnybot.go

@@ -64,7 +64,7 @@ func message_create (s *discordgo.Session, m *discordgo.MessageCreate) {
 	// awwnime (test)
 	if message == "awwnime" {
 		// get url
-		url := <-get_imgur_image("awwnime")
+		url := <-get_subreddit_image("awwnime")
 
 		// print message with url
 		s.ChannelMessageSend(m.ChannelID, url)

func-images.go

@@ -51,7 +51,7 @@ func get_redditbooru_image(sub string) <-chan string{
 		// read response
 		out, err := ioutil.ReadAll(resp.Body)
 		if err != nil {
-			panic(err)
+			fmt.Println("Error reading response from redditbooru, ", err)
 		}
 
 		// randomize the seed for the random int
@@ -116,5 +116,59 @@ func get_imgur_image(sub string) <-chan string {
 	}()
 
 	return ret
-
+}
+
+// subreddit request
+func get_subreddit_image(sub string) <-chan string {
+	ret := make(chan string)
+
+	go func() {
+		defer close(ret)
+
+		// create the proper url with the subreddit
+		url := "https://www.reddit.com/r/" + sub + "/.json?show=all&limit=100"
+
+		// set 5 second timeout on request
+		client := http.Client {
+			Timeout: 5 * time.Second,
+		}
+
+		req, err := http.NewRequest("GET", url, nil)
+		req.Header.Add("User-Agent", "BunnyBot")
+
+		// get the content of the page
+		resp, err := client.Do(req)
+		defer resp.Body.Close()
+
+		// read response
+		out, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			fmt.Println("Error reading response from reddit, ", err)
+		}
+
+		// randomize the seed for the random int
+		rand.Seed(time.Now().UnixNano())
+
+		// make sure we aren't grabbing a text post by cylcing through looking for an image
+		limit64, _ := jsonparser.GetInt(out, "data", "dist")
+		limit := int(limit64) // convert from int64 to int
+
+		// loop through and try to find a post that isn't a text post
+		for i := 0; i < limit; i++ {
+			// get a random number
+			random_img := rand.Intn(limit)
+
+			// check the post hint to see what type of post it is
+			hint, _ := jsonparser.GetString(out, "data", "children", "[" + strconv.Itoa(random_img) + "]", "data", "post_hint")
+
+			// make sure that it is an image, or at least a gif
+			if hint == "image" || hint == "link" || hint == "rich:video" {
+				image, _ := jsonparser.GetString(out, "data", "children", "[" + strconv.Itoa(random_img) + "]", "data", "url")
+				ret <- image
+				break
+			}
+		}
+	}()
+
+	return ret
 }