use account data

nun.go

@@ -20,7 +20,7 @@ func newNunWatch(stop chan bool, c *mautrix.Client) *nunWatch {
 }
 
 func (n *nunWatch) Main() {
-	ticker := time.NewTicker(30 * time.Second)
+	ticker := time.NewTicker(6 * time.Second)
 
 	for {
 		select {
@@ -45,11 +45,17 @@ func (n *nunWatch) Main() {
 			}
 			if n.fail != 0 {
 				n.fail = 0
-				ticker.Reset(30 * time.Second)
+				ticker.Reset(60 * time.Second)
 			}
 
 			if n.curPost.Title != newPost.Title {
 				n.curPost = newPost
+				var cur post
+				err := n.client.GetAccountData("nun.newest", &cur)
+				if err != nil {
+					log.Printf("tried to get saved account data but failed %v", err)
+					cur.Number = 0
+				}
 				roomResp, err := n.client.JoinedRooms()
 				if err != nil {
 					log.Printf("error getting joined rooms: %v", err)
@@ -57,7 +63,16 @@ func (n *nunWatch) Main() {
 				}
 				rooms := roomResp.JoinedRooms
 				for _, room := range rooms {
+					log.Printf("posting %v", n.curPost.Number)
+					if n.curPost.Number != cur.Number {
 						n.client.SendText(room, fmt.Sprintf("%v\n%v", n.curPost.Title, n.curPost.Link))
+						if n.curPost.Number > 0 {
+							err := n.client.SetAccountData("nun.newest", n.curPost)
+							if err != nil {
+								log.Printf("error saving current post: %v", err)
+							}
+						}
+					}
 				}
 
 			}

reddit.go

@@ -6,16 +6,20 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"regexp"
+	"strconv"
 	"time"
 )
 
 type post struct {
 	Title  string
 	Link   string
+	Number int
 }
 
 func getNewestPost(subreddit string) (post, error) {
 	var resp redditResp
+	re := regexp.MustCompile("([0-9]+)")
 	//building request from scratch because reddit api is weird
 	url := fmt.Sprintf("https://www.reddit.com/r/%v/new.json?sort=new&limit=1", subreddit)
 	req, _ := http.NewRequest("GET", url, nil)
@@ -43,9 +47,14 @@ func getNewestPost(subreddit string) (post, error) {
 	if err != nil {
 		return post{}, err
 	}
-
+	numS := re.FindStringSubmatch(resp.Data.Children[0].Data.Title)[0]
+	num, err := strconv.Atoi(numS)
+	if err != nil || numS == "" {
+		num = -1
+	}
 	return post{
 		Title:  resp.Data.Children[0].Data.Title,
 		Link:   resp.Data.Children[0].Data.URL,
+		Number: num,
 	}, nil
 }