From bdefce7e39e0961b97ff99f6647a54f590356f94 Mon Sep 17 00:00:00 2001
From: ice-myles <96409608+ice-myles@users.noreply.github.com>
Date: Fri, 14 Feb 2025 16:18:30 +0300
Subject: [PATCH] Replace special symbols by _ rune.

---
 database/query/client.go              |  2 +-
 database/query/client_functions.go    | 10 +++++-----
 database/query/query_text_search.go   |  2 +-
 database/query/query_where_builder.go |  8 ++++----
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/database/query/client.go b/database/query/client.go
index 621a0a3..c0e4357 100644
--- a/database/query/client.go
+++ b/database/query/client.go
@@ -85,7 +85,7 @@ func init() {
 					},
 					{
 						Name: "subzero_nostr_replace_special_chars",
-						Ptr:  subzeroNostrRemoveSpecialChars,
+						Ptr:  subzeroNostrReplaceSpecialChars,
 						Pure: true,
 					},
 				}
diff --git a/database/query/client_functions.go b/database/query/client_functions.go
index cfc0f30..70a2a70 100644
--- a/database/query/client_functions.go
+++ b/database/query/client_functions.go
@@ -101,21 +101,21 @@ func sqlGetEventAddress(eventID string, kind int, masterPubkey, dTag string) str
 func sqlGenerateContentMetadata(eventKind int, content string, jsonTags string) (string, error) {
 	switch eventKind {
 	case nostr.KindProfileMetadata:
-		return removeSpecialChars(parseProfileContentMetadata(content)), nil
+		return replaceSpecialChars(parseProfileContentMetadata(content)), nil
 	case nostr.KindTextNote, nostr.KindArticle, model.CustomIONKindEditableTextNote:
 		var tags model.Tags
 		if err := tags.Scan(jsonTags); err != nil {
 			return "", errors.Wrap(err, "failed to unmarshal tags")
 		}
 
-		return removeSpecialChars(processIMetaTags(tags)), nil
+		return replaceSpecialChars(processIMetaTags(tags)), nil
 	case nostr.KindFileMetadata:
 		var tags model.Tags
 		if err := tags.Scan(jsonTags); err != nil {
 			return "", errors.Wrap(err, "failed to unmarshal tags")
 		}
 
-		return removeSpecialChars(processAltSummaryTags(tags)), nil
+		return replaceSpecialChars(processAltSummaryTags(tags)), nil
 	default:
 		return "", nil
 	}
@@ -150,6 +150,6 @@ func processAltSummaryTags(tags model.Tags) string {
 	return strings.Join(metadata, " ")
 }
 
-func subzeroNostrRemoveSpecialChars(value string) string {
-	return removeSpecialChars(value)
+func subzeroNostrReplaceSpecialChars(value string) string {
+	return replaceSpecialChars(value)
 }
diff --git a/database/query/query_text_search.go b/database/query/query_text_search.go
index 35f2a6b..4d12dfe 100644
--- a/database/query/query_text_search.go
+++ b/database/query/query_text_search.go
@@ -29,7 +29,7 @@ func parseContentMetadata(ev *model.Event) string {
 		content = strings.Join(values, " ")
 	}
 
-	return removeSpecialChars(content)
+	return replaceSpecialChars(content)
 }
 
 func extractFTS5IMeta(tags []model.Tag) []string {
diff --git a/database/query/query_where_builder.go b/database/query/query_where_builder.go
index c185673..c438c12 100644
--- a/database/query/query_where_builder.go
+++ b/database/query/query_where_builder.go
@@ -782,7 +782,7 @@ func (w *whereBuilder) Build(filters ...model.Filter) (sql string, params map[st
 			w.Dependencies = append(w.Dependencies, dbFilter.Dependencies...)
 		}
 		if w.Prefix != "" && dbFilter.SearchText != "" {
-			searchKeywords = append(searchKeywords, removeSpecialChars(dbFilter.SearchText)+"*")
+			searchKeywords = append(searchKeywords, replaceSpecialChars(dbFilter.SearchText)+"*")
 		}
 	}
 	if w.Prefix != "" && len(searchKeywords) > 0 {
@@ -1001,16 +1001,16 @@ func (w *whereBuilder) BuildForPrecalculatedCounters(filters ...model.Filter) (s
 	return w.String(), w.Params, nil
 }
 
-func removeSpecialChars(input string) string {
+func replaceSpecialChars(input string) string {
 	if input == "" {
 		return ""
 	}
 
 	return strings.Map(func(r rune) rune {
-		if unicode.IsLetter(r) || unicode.IsDigit(r) || unicode.IsSpace(r) {
+		if unicode.IsLetter(r) || unicode.IsDigit(r) || unicode.IsSpace(r) || unicode.IsSymbol('_') {
 			return r
 		}
 
-		return -1
+		return '_'
 	}, input)
 }