From 81df0b2a16e067cd7367ff6622b4fbfc7a9b1519 Mon Sep 17 00:00:00 2001
From: jvoisin <julien.voisin@dustri.org>
Date: Tue, 17 Jun 2025 16:34:44 +0200
Subject: [PATCH] perf(rewrite): make getPredefinedRewriteRules O(1)

---
 internal/reader/rewrite/rewriter.go | 8 +++-----
 internal/reader/rewrite/rules.go    | 2 +-
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/internal/reader/rewrite/rewriter.go b/internal/reader/rewrite/rewriter.go
index d22adf8e..4d806dad 100644
--- a/internal/reader/rewrite/rewriter.go
+++ b/internal/reader/rewrite/rewriter.go
@@ -136,11 +136,9 @@ func parseRules(rulesText string) (rules []rule) {
 }
 
 func getPredefinedRewriteRules(entryURL string) string {
-	urlDomain := urllib.Domain(entryURL)
-	for domain, rules := range predefinedRules {
-		if strings.Contains(urlDomain, domain) {
-			return rules
-		}
+	urlDomain := urllib.DomainWithoutWWW(entryURL)
+	if rules, ok := predefinedRules[urlDomain]; ok {
+		return rules
 	}
 
 	return ""
diff --git a/internal/reader/rewrite/rules.go b/internal/reader/rewrite/rules.go
index 86763f03..f4340710 100644
--- a/internal/reader/rewrite/rules.go
+++ b/internal/reader/rewrite/rules.go
@@ -26,11 +26,11 @@ var predefinedRules = map[string]string{
 	"optipess.com":           "add_image_title",
 	"peebleslab.com":         "add_image_title",
 	"quantamagazine.org":     `add_youtube_video_from_id, remove("h6:not(.byline,.post__title__kicker), #comments, .next-post__content, .footer__section, figure .outer--content, script")`,
+	"qwantz.com":             "add_image_title,add_mailto_subject",
 	"sentfromthemoon.com":    "add_image_title",
 	"thedoghousediaries.com": "add_image_title",
 	"theverge.com":           `add_dynamic_image, remove("div.duet--recirculation--related-list, .hidden")`,
 	"treelobsters.com":       "add_image_title",
-	"www.qwantz.com":         "add_image_title,add_mailto_subject",
 	"xkcd.com":               "add_image_title",
 	"youtube.com":            "add_youtube_video",
 }