fix: used a hashset for large website check

Author: Acollie

formating/text.go

@@ -112,14 +112,23 @@ func removeMailTo(links []string) []string {
 }
 
 func removeLargeWebSites(links []string) []string {
-	largeWebsites := []string{"facebook.com", "twitter.com", "instagram.com", "youtube.com", "linkedin.com", "pinterest.com", "tumblr.com", "reddit.com", "snapchat.com", "whatsapp.com", "quora.com", "flickr.com", "vimeo.com", "medium.com", "vk.com", "soundcloud.com"}
+	largeWebsites := map[string]struct{}{
+		"facebook.com": {}, "twitter.com": {}, "instagram.com": {}, "youtube.com": {},
+		"linkedin.com": {}, "pinterest.com": {}, "tumblr.com": {}, "reddit.com": {},
+		"snapchat.com": {}, "whatsapp.com": {}, "quora.com": {}, "flickr.com": {},
+		"vimeo.com": {}, "medium.com": {}, "vk.com": {}, "soundcloud.com": {},
+	}
 
-	for _, link := range links {
-		for _, website := range largeWebsites {
-			if strings.Contains(link, website) {
-				continue
-			}
+	var result []string
+	for i, link := range links {
+		url, _ := url.Parse(link)
+		if _, ok := largeWebsites[url.Hostname()]; ok {
+			continue
+		}
+		result = append(result, links[i])
+		if len(result) == 100 {
+			break
 		}
 	}
-	return links
+	return result
 }

handler/type.go

@@ -2,16 +2,18 @@ package handler
 
 import (
 	"context"
+	"webcrawler/config"
 	"webcrawler/dynamoDBx"
 	"webcrawler/graphx"
 	"webcrawler/queue"
 	"webcrawler/site"
 )
 
 type Server struct {
-	Queue *queue.Handler
-	Db    *dynamoDBx.DB
-	Graph *graphx.Graph
+	Queue  *queue.Handler
+	Db     *dynamoDBx.DB
+	Graph  *graphx.Graph
+	Config *config.IgnoreList
 }
 
 type DBi interface {
@@ -24,11 +26,12 @@ type DBi interface {
 	UpdateWebsite(context.Context, site.Page, site.Website) error
 }
 
-func New(db *dynamoDBx.DB, queue *queue.Handler, graph *graphx.Graph) Server {
+func New(db *dynamoDBx.DB, queue *queue.Handler, graph *graphx.Graph, config *config.IgnoreList) Server {
 	return Server{
-		Db:    db,
-		Queue: queue,
-		Graph: graph,
+		Db:     db,
+		Queue:  queue,
+		Graph:  graph,
+		Config: config,
 	}
 
 }

main.go

@@ -6,6 +6,7 @@ import (
 	"log"
 	"os"
 	"webcrawler/awsx"
+	localConfig "webcrawler/config"
 	"webcrawler/dynamoDBx"
 	"webcrawler/graphx"
 	"webcrawler/handler"
@@ -42,8 +43,9 @@ func main() {
 		log.Fatalf("Cannot connect to the graph database: %s", err)
 	}
 	graph := graphx.New(graphConn)
+	config := localConfig.Fetch()
 
-	server := handler.New(dbClient, sqsClient, graph)
+	server := handler.New(dbClient, sqsClient, graph, config)
 
 	initialLinks := []string{
 		"https://blog.alexcollie.com/",