From ad138c3017832f14ae452969816f9e4e7ce5237e Mon Sep 17 00:00:00 2001
From: Nazar Kanaev <nkanaev@live.com>
Date: Wed, 4 Dec 2024 21:36:44 +0000
Subject: [PATCH] show article content in the list if the title is missing

---
 src/content/htmlutil/utils.go      | 14 ++++++++++++++
 src/content/htmlutil/utils_test.go | 18 ++++++++++++++++++
 src/server/routes.go               |  9 ++++++++-
 3 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/src/content/htmlutil/utils.go b/src/content/htmlutil/utils.go
index 5f66ae8..10918e7 100644
--- a/src/content/htmlutil/utils.go
+++ b/src/content/htmlutil/utils.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"regexp"
 	"strings"
+	"unicode"
 
 	"golang.org/x/net/html"
 )
@@ -61,3 +62,16 @@ func ExtractText(content string) string {
 	text = whitespaceRegex.ReplaceAllLiteralString(text, " ")
 	return text
 }
+
+func TruncateText(input string, size int) string {
+	runes := []rune(input)
+	if len(runes) <= size {
+		return input
+	}
+	for i := size - 1; i > 0; i-- {
+		if unicode.IsSpace(runes[i]) {
+			return string(runes[:i]) + " ..."
+		}
+	}
+	return input
+}
diff --git a/src/content/htmlutil/utils_test.go b/src/content/htmlutil/utils_test.go
index eb9e522..0d86f5e 100644
--- a/src/content/htmlutil/utils_test.go
+++ b/src/content/htmlutil/utils_test.go
@@ -24,3 +24,21 @@ func TestExtractText(t *testing.T) {
 		}
 	}
 }
+
+func TestTruncateText(t *testing.T) {
+	input := "Lorem ipsum — классический текст-«рыба»"
+
+	size := 30
+	want := "Lorem ipsum — классический ..."
+	have := TruncateText(input, size)
+	if want != have {
+		t.Errorf("\nsize: %d\nwant: %#v\nhave: %#v", size, want, have)
+	}
+
+	size = 1000
+	want = input
+	have = TruncateText(input, size)
+	if want != have {
+		t.Errorf("\nsize: %d\nwant: %#v\nhave: %#v", size, want, have)
+	}
+}
diff --git a/src/server/routes.go b/src/server/routes.go
index 6d05320..aa810be 100644
--- a/src/server/routes.go
+++ b/src/server/routes.go
@@ -371,12 +371,19 @@ func (s *Server) handleItemList(c *router.Context) {
 		}
 		newestFirst := query.Get("oldest_first") != "true"
 
-		items := s.db.ListItems(filter, perPage+1, newestFirst, false)
+		items := s.db.ListItems(filter, perPage+1, newestFirst, true)
 		hasMore := false
 		if len(items) == perPage+1 {
 			hasMore = true
 			items = items[:perPage]
 		}
+
+		for i, item := range items {
+			if item.Title == "" {
+				text := htmlutil.ExtractText(item.Content)
+				items[i].Title = htmlutil.TruncateText(text, 140)
+			}
+		}
 		c.JSON(http.StatusOK, map[string]interface{}{
 			"list":     items,
 			"has_more": hasMore,