gruik

commit 153b44aa6c868d0132b872f2b1a24f9f86943137
parent 6b93082010a752a9849edebfdb27c5a934cb700a
Author: Emile 'iMil' Heitor <imil@NetBSD.org>
Date:   Thu, 13 Jul 2023 23:01:25 +0200

feat: added hash to compare news and for future xpost

Diffstat:
M
README.md
 | 
1
+
M
main.go
 | 
23
+++++++++++++++++++----

2 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/README.md b/README.md
@@ -20,6 +20,7 @@ irc:
     title: pink        # ditto
     news: bold         # ditto
     link: lightblue    # ditto
+    hash: gray         # ditto
   ops:                 # ditto
     - MrFoo            # ditto
     - MrsBar           # ditto
diff --git a/main.go b/main.go
@@ -1,6 +1,8 @@
 package main
 
 import (
+	"crypto/sha256"
+	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -19,13 +21,21 @@ type News struct {
 	Origin string `json:"origin"`
 	Title  string `json:"title"`
 	Link   string `json:"link"`
+	Hash   string `json:"hash"`
 }
 
 const feedJson = "feed.json"
 
+func mkHash(s1, s2 string) string {
+	s := s1 + s2
+	h := sha256.Sum256([]byte(s))
+	hash := hex.EncodeToString(h[:])
+	return hash[:8]
+}
+
 func newsExists(newslist []News, news News) bool {
 	for _, n := range newslist {
-		if n.Title == news.Title && n.Link == news.Link {
+		if n.Hash == news.Hash {
 			return true
 		}
 	}
@@ -83,10 +93,11 @@ func newsFetch(client *girc.Client, channel string) {
 					Origin: feed.Title,
 					Title:  item.Title,
 					Link:   item.Link,
+					Hash:   mkHash(item.Title, item.Link),
 				}
 				// Check if item was already posted
 				if newsExists(newslist, news) {
-					log.Printf("already posted %s\n", item.Title)
+					log.Printf("already posted %s (%s)\n", item.Title, news.Hash)
 					continue
 				}
 				// don't paste news older than feeds.maxage
@@ -100,13 +111,15 @@ func newsFetch(client *girc.Client, channel string) {
 					break
 				}
 
-				post := fmt.Sprintf("[{%s}%s{c}] {%s}%s{c}: {%s}%s{c}",
+				post := fmt.Sprintf("[{%s}%s{c}] {%s}%s{c}: {%s}%s{c} {%s}#%s{c}",
 					viper.GetString("irc.colors.title"),
 					feed.Title,
 					viper.GetString("irc.colors.news"),
 					item.Title,
 					viper.GetString("irc.colors.link"),
-					item.Link)
+					item.Link,
+					viper.GetString("irc.colors.hash"),
+					news.Hash)
 
 				client.Cmd.Message(channel, girc.Fmt(post))
 
@@ -116,6 +129,7 @@ func newsFetch(client *girc.Client, channel string) {
 				newslist = append(newslist, news)
 			}
 		}
+		// save news list to disk to avoid repost when restarting
 		if err = encoder.Encode(newslist); err != nil {
 			client.Cmd.Message(channel, "could write newslist")
 		}
@@ -134,6 +148,7 @@ func confDefault() {
 		"irc.colors.title": "pink",
 		"irc.colors.news":  "bold",
 		"irc.colors.link":  "lightblue",
+		"irc.colors.hash":  "gray",
 		"feeds.urls":       []string{},
 		"feeds.maxnews":    10,
 		"feeds.maxage":     "1h",