fix: improved performance by truncating not displayed text

html-router/src/utils/text_content_preview.rs

@@ -0,0 +1,35 @@
+use common::storage::types::text_content::TextContent;
+
+const TEXT_PREVIEW_LENGTH: usize = 50;
+
+fn maybe_truncate(value: &str) -> Option<String> {
+    let mut char_count = 0;
+
+    for (idx, _) in value.char_indices() {
+        if char_count == TEXT_PREVIEW_LENGTH {
+            return Some(value[..idx].to_string());
+        }
+
+        char_count += 1;
+    }
+
+    None
+}
+
+pub fn truncate_text_content(mut content: TextContent) -> TextContent {
+    if let Some(truncated) = maybe_truncate(&content.text) {
+        content.text = truncated;
+    }
+
+    if let Some(context) = content.context.as_mut() {
+        if let Some(truncated) = maybe_truncate(context) {
+            *context = truncated;
+        }
+    }
+
+    content
+}
+
+pub fn truncate_text_contents(contents: Vec<TextContent>) -> Vec<TextContent> {
+    contents.into_iter().map(truncate_text_content).collect()
+}