Added fuzzy finder to search, made sync check as middleware, .id file is never used

2026-07-02 09:30:24 +02:00
parent a8df738108
commit eda60e0c07
9 changed files with 522 additions and 282 deletions
@@ -1,117 +0,0 @@
-package web
-
-import (
-	"log"
-	"music-server/internal/backend"
-	"net/http"
-	"regexp"
-	"strings"
-)
-
-var soundtracks_added []string
-
-func FindSoundtrackWebHandler(w http.ResponseWriter, r *http.Request) {
-	err := r.ParseForm()
-	if err != nil {
-		http.Error(w, "Bad Request", http.StatusBadRequest)
-	}
-
-	search_term := r.FormValue("search_term")
-
-	search(search_term)
-
-	component := FoundSoundtracks(soundtracks_added)
-	err = component.Render(r.Context(), w)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusBadRequest)
-		log.Fatalf("Error rendering in FindSoundtrackWebHandler: %e", err)
-	}
-}
-
-func search(searchText string) {
-	soundtracks_added = nil
-	soundtracks := backend.GetAllSoundtracks()
-	for _, soundtrack := range soundtracks {
-		if is_match_exact(searchText, soundtrack) {
-			add_soundtrack(soundtrack)
-		}
-	}
-	for _, soundtrack := range soundtracks {
-		if is_match_contains(clean_term(searchText), clean_term(soundtrack)) {
-			add_soundtrack(soundtrack)
-		}
-	}
-	for _, soundtrack := range soundtracks {
-		if is_match_regex(clean_term(searchText), clean_term(soundtrack)) {
-			add_soundtrack(soundtrack)
-		}
-	}
-}
-
-func is_match_exact(search_term string, soundtrack_name string) bool {
-	search_term = strings.ToLower(search_term)
-	soundtrack_name = strings.ToLower(soundtrack_name)
-
-	if search_term == "" {
-		return true
-	} else if strings.Contains(soundtrack_name, search_term) {
-		return true
-	} else {
-		return false
-	}
-}
-
-func is_match_contains(search_term string, soundtrack_name string) bool {
-	if search_term == "" {
-		return true
-	} else if strings.Contains(soundtrack_name, search_term) {
-		return true
-	} else {
-		return false
-	}
-}
-
-func is_match_regex(search_term string, soundtrack_name string) bool {
-	if search_term == "" {
-		return true
-	} else if compile_regex(search_term).MatchString(soundtrack_name) {
-		return true
-	} else {
-		return false
-	}
-}
-
-func add_soundtrack(soundtrack string) {
-	if !check_if_soundtrack_exists(soundtrack) {
-		soundtracks_added = append(soundtracks_added, soundtrack)
-	}
-}
-
-func check_if_soundtrack_exists(soundtrackName string) bool {
-	soundtrack_exists := false
-	for _, child := range soundtracks_added {
-		if child == soundtrackName {
-			soundtrack_exists = true
-		}
-	}
-	return soundtrack_exists
-}
-
-func compile_regex(search_term string) *regexp.Regexp {
-	regText := ".*"
-	for _, letter := range search_term {
-		regText += string(letter) + ".*"
-	}
-	r, _ := regexp.Compile(regText)
-
-	return r
-}
-
-func clean_term(term string) string {
-	term = strings.ReplaceAll(term, " ", "")
-	term = strings.ReplaceAll(term, "é", "e")
-	term = strings.ReplaceAll(term, "+", "plus")
-	term = strings.ReplaceAll(term, "&", "and")
-	term = strings.ReplaceAll(term, "'n", "and")
-	return strings.ToLower(term)
-}
@@ -0,0 +1,403 @@
+package web
+
+import (
+	"log"
+	"music-server/internal/backend"
+	"net/http"
+	"regexp"
+	"sort"
+	"strings"
+	"sync"
+	"unicode"
+)
+
+var soundtracks_added []string
+
+// Precomputed data for optimization
+type SoundtrackData struct {
+	Original     string
+	Cleaned      string
+	Abbreviation string
+}
+
+var (
+	precomputedSoundtracks []SoundtrackData
+	precomputedOnce        sync.Once
+	regexCache             = make(map[string]*regexp.Regexp)
+	regexCacheMutex        sync.Mutex
+)
+
+func FindSoundtrackWebHandler(w http.ResponseWriter, r *http.Request) {
+	err := r.ParseForm()
+	if err != nil {
+		http.Error(w, "Bad Request", http.StatusBadRequest)
+	}
+
+	search_term := r.FormValue("search_term")
+
+	search(search_term)
+
+	component := FoundSoundtracks(soundtracks_added)
+	err = component.Render(r.Context(), w)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		log.Fatalf("Error rendering in FindSoundtrackWebHandler: %e", err)
+	}
+}
+
+func search(searchText string) {
+	soundtracks_added = nil
+
+	// Precompute cleaned search term once
+	cleanedSearchTerm := clean_term(searchText)
+
+	// Use precomputed data for efficiency
+	soundtrackData := getPrecomputedSoundtracks()
+	seen := make(map[string]bool) // O(1) duplicate checking
+
+	for _, data := range soundtrackData {
+		// Check exact match (case-insensitive contains)
+		if is_match_exact(searchText, data.Original) && !seen[data.Original] {
+			soundtracks_added = append(soundtracks_added, data.Original)
+			seen[data.Original] = true
+		}
+	}
+
+	for _, data := range soundtrackData {
+		// Check contains match with cleaned terms
+		if !seen[data.Original] && is_match_contains(cleanedSearchTerm, data.Cleaned) {
+			soundtracks_added = append(soundtracks_added, data.Original)
+			seen[data.Original] = true
+		}
+	}
+
+	for _, data := range soundtrackData {
+		// Check regex match with cleaned terms
+		if !seen[data.Original] && is_match_regex_cached(cleanedSearchTerm, data.Cleaned) {
+			soundtracks_added = append(soundtracks_added, data.Original)
+			seen[data.Original] = true
+		}
+	}
+}
+
+func is_match_exact(search_term string, soundtrack_name string) bool {
+	search_term = strings.ToLower(search_term)
+	soundtrack_name = strings.ToLower(soundtrack_name)
+
+	if search_term == "" {
+		return true
+	} else if strings.Contains(soundtrack_name, search_term) {
+		return true
+	} else {
+		return false
+	}
+}
+
+func is_match_contains(search_term string, soundtrack_name string) bool {
+	if search_term == "" {
+		return true
+	} else if strings.Contains(soundtrack_name, search_term) {
+		return true
+	} else {
+		return false
+	}
+}
+
+func is_match_regex(search_term string, soundtrack_name string) bool {
+	if search_term == "" {
+		return true
+	} else if compile_regex(search_term).MatchString(soundtrack_name) {
+		return true
+	} else {
+		return false
+	}
+}
+
+func compile_regex(search_term string) *regexp.Regexp {
+	regText := ".*"
+	for _, letter := range search_term {
+		regText += string(letter) + ".*"
+	}
+	r, _ := regexp.Compile(regText)
+
+	return r
+}
+
+// is_match_regex_cached uses cached compiled regex patterns for better performance
+func is_match_regex_cached(search_term string, soundtrack_name string) bool {
+	if search_term == "" {
+		return true
+	}
+
+	// Check cache first
+	regexCacheMutex.Lock()
+	re, exists := regexCache[search_term]
+	if !exists {
+		re = compile_regex(search_term)
+		regexCache[search_term] = re
+	}
+	regexCacheMutex.Unlock()
+
+	return re.MatchString(soundtrack_name)
+}
+
+func clean_term(term string) string {
+	term = strings.ReplaceAll(term, " ", "")
+	term = strings.ReplaceAll(term, "é", "e")
+	term = strings.ReplaceAll(term, "+", "plus")
+	term = strings.ReplaceAll(term, "&", "and")
+	term = strings.ReplaceAll(term, "'n", "and")
+	return strings.ToLower(term)
+}
+
+// toLower converts a string to lowercase.
+func toLower(s string) string {
+	return strings.Map(unicode.ToLower, s)
+}
+
+// levenshteinWithThreshold calculates Levenshtein distance with early termination and space optimization.
+// Uses O(min(n,m)) space instead of O(n*m) and stops early if threshold is exceeded.
+func levenshteinWithThreshold(s, t string, threshold int) int {
+	if threshold < 0 {
+		threshold = 2 // default threshold
+	}
+
+	m, n := len(s), len(t)
+
+	// Quick checks for early termination
+	if m == 0 {
+		return n
+	}
+	if n == 0 {
+		return m
+	}
+	if abs(m-n) > threshold {
+		return threshold + 1 // Can't be within threshold
+	}
+
+	// Use the shorter string for the row to minimize space
+	if m < n {
+		s, t = t, s
+		m, n = n, m
+	}
+
+	// Space optimization: only store two rows
+	prevRow := make([]int, n+1)
+	currRow := make([]int, n+1)
+
+	// Initialize first row
+	for j := 0; j <= n; j++ {
+		prevRow[j] = j
+	}
+
+	for i := 1; i <= m; i++ {
+		currRow[0] = i
+		minInRow := currRow[0]
+
+		for j := 1; j <= n; j++ {
+			if s[i-1] == t[j-1] {
+				currRow[j] = prevRow[j-1]
+			} else {
+				currRow[j] = min3(prevRow[j], currRow[j-1], prevRow[j-1]) + 1
+			}
+			if currRow[j] < minInRow {
+				minInRow = currRow[j]
+			}
+		}
+
+		// Early termination: if minimum in current row exceeds threshold
+		if minInRow > threshold {
+			return threshold + 1
+		}
+
+		// Swap rows for next iteration
+		prevRow, currRow = currRow, prevRow
+	}
+
+	return prevRow[n]
+}
+
+// Helper functions for optimized Levenshtein
+func abs(x int) int {
+	if x < 0 {
+		return -x
+	}
+	return x
+}
+
+func min3(a, b, c int) int {
+	if a < b {
+		if a < c {
+			return a
+		}
+		return c
+	}
+	if b < c {
+		return b
+	}
+	return c
+}
+
+// precomputeSoundtrackData initializes cleaned terms and abbreviations for all soundtracks
+func precomputeSoundtrackData() {
+	precomputedOnce.Do(func() {
+		soundtracks := backend.GetAllSoundtracks()
+		precomputedSoundtracks = make([]SoundtrackData, len(soundtracks))
+
+		for i, soundtrack := range soundtracks {
+			cleaned := clean_term(soundtrack)
+			precomputedSoundtracks[i] = SoundtrackData{
+				Original:     soundtrack,
+				Cleaned:      cleaned,
+				Abbreviation: extractAbbreviation(soundtrack),
+			}
+		}
+	})
+}
+
+// getPrecomputedSoundtracks ensures precomputed data is available and returns it
+func getPrecomputedSoundtracks() []SoundtrackData {
+	precomputeSoundtrackData()
+	return precomputedSoundtracks
+}
+
+// levenshtein maintains backward compatibility by calling the optimized version
+func levenshtein(s, t string) int {
+	return levenshteinWithThreshold(s, t, -1) // -1 uses default threshold
+}
+
+// extractAbbreviation extracts the first letters of each word in a string.
+func extractAbbreviation(s string) string {
+	words := strings.Fields(s)
+	abbr := ""
+	for _, word := range words {
+		if len(word) > 0 {
+			abbr += string(word[0])
+		}
+	}
+	return toLower(abbr)
+}
+
+// fuzzyFindSubstring checks if the query fuzzy-matches any substring of the item.
+func fuzzyFindSubstring(query, item string, threshold int) (bool, int) {
+	query = toLower(query)
+	item = toLower(item)
+	queryLen := len(query)
+	itemLen := len(item)
+	if queryLen > itemLen {
+		return false, 0
+	}
+
+	// Check for exact substring match first (weight: 100)
+	if strings.Contains(item, query) {
+		return true, 100
+	}
+
+	// Check for fuzzy substring match using optimized Levenshtein
+	for i := 0; i <= itemLen-queryLen; i++ {
+		substring := item[i : i+queryLen]
+		distance := levenshteinWithThreshold(query, substring, threshold)
+		if distance <= threshold {
+			// Weight: higher for matches at the start of the string
+			weight := 50 - i // Higher weight for earlier matches
+			return true, weight
+		}
+	}
+	return false, 0
+}
+
+// fuzzyFind checks if the query matches the item (substring or abbreviation).
+func fuzzyFind(query string, item string, threshold int) (bool, int) {
+	query = toLower(query)
+	item = toLower(item)
+
+	// Check for substring fuzzy match
+	if matched, weight := fuzzyFindSubstring(query, item, threshold); matched {
+		return true, weight
+	}
+
+	// Check for abbreviation match using optimized Levenshtein
+	abbr := extractAbbreviation(item)
+	distance := levenshteinWithThreshold(query, abbr, threshold)
+	if distance <= threshold {
+		// Weight: higher for exact abbreviation matches
+		weight := 100 - distance*10 // Higher weight for exact matches
+		return true, weight
+	}
+
+	return false, 0
+}
+
+// getAdaptiveThreshold returns a threshold based on query length
+func getAdaptiveThreshold(query string) int {
+	threshold := 2 // Base threshold for minor typos
+	queryLen := len(query)
+	if queryLen > 6 {
+		// For longer queries, allow more tolerance
+		threshold = queryLen / 3
+		if threshold < 2 {
+			threshold = 2
+		} else if threshold > 4 {
+			threshold = 4 // Cap at 4 for very long queries
+		}
+	}
+	return threshold
+}
+
+// fuzzySearch performs fuzzy search on soundtracks using the cleaned terms for consistency
+func fuzzySearch(searchText string) []string {
+	query := clean_term(searchText)
+	threshold := getAdaptiveThreshold(query)
+
+	// Use precomputed data for efficiency
+	soundtrackData := getPrecomputedSoundtracks()
+
+	type match struct {
+		item   string
+		weight int
+	}
+	var matches []match
+	seen := make(map[string]bool) // O(1) duplicate checking
+
+	for _, data := range soundtrackData {
+		if matched, weight := fuzzyFind(query, data.Cleaned, threshold); matched {
+			if !seen[data.Original] {
+				matches = append(matches, match{data.Original, weight})
+				seen[data.Original] = true
+			}
+		}
+	}
+
+	// Sort matches by weight (descending)
+	sort.Slice(matches, func(i, j int) bool {
+		return matches[i].weight > matches[j].weight
+	})
+
+	// Extract just the soundtrack names in order
+	result := make([]string, len(matches))
+	for i, m := range matches {
+		result[i] = m.item
+	}
+
+	return result
+}
+
+// FindSoundtrackFuzzyWebHandler handles fuzzy search requests
+func FindSoundtrackFuzzyWebHandler(w http.ResponseWriter, r *http.Request) {
+	err := r.ParseForm()
+	if err != nil {
+		http.Error(w, "Bad Request", http.StatusBadRequest)
+		return
+	}
+
+	search_term := r.FormValue("search_term")
+
+	results := fuzzySearch(search_term)
+
+	component := FoundSoundtracks(results)
+	err = component.Render(r.Context(), w)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		log.Fatalf("Error rendering in FindSoundtrackFuzzyWebHandler: %e", err)
+	}
+}
@@ -1,19 +1,45 @@
 package web

-templ HelloForm() {
+templ SearchForm() {
 	@Base() {
 		<button id="dark-mode-toggle">🌙</button>
 		<div id="search-container">
-			<input id="search_term" name="search_term" type="text" hx-post="/find" hx-trigger="keyup changed delay:0.25s" hx-target="#soundtracks-container"/>
+			<input id="search_term" name="search_term" type="text" hx-post="/findfuzzy" hx-trigger="keyup changed delay:0.25s" hx-target="#soundtracks-container"/>
+			<div class="radio-group" style="display: inline-block; margin-left: 10px;">
+				<label><input type="radio" name="search_type" value="fuzzy" checked> Fuzzy</label>
+				<label><input type="radio" name="search_type" value="normal"> Normal</label>
+			</div>
 			<button type="button" id="clear" name="clear">Clear</button>
 		</div>
 		<div id="soundtracks-container"></div>
 		<script>
-			document.addEventListener('readystatechange', () => {	    
+			// Get current search type from radio buttons
+			function getSearchType() {
+				return document.querySelector('input[name="search_type"]:checked').value;
+			}
+			
+			// Get endpoint based on search type
+			function getSearchEndpoint() {
+				return getSearchType() === 'fuzzy' ? '/findfuzzy' : '/find';
+			}
+			
+			// Update search input endpoint
+			function updateSearchEndpoint() {
+				const endpoint = getSearchEndpoint();
+				document.getElementById('search_term').setAttribute('hx-post', endpoint);
+			}
+			
+			document.addEventListener('readystatechange', () => {    
 				if (document.readyState == 'complete') {
-					htmx.ajax('POST', '/find', '#soundtracks-container');
+					// Initialize with fuzzy search (default)
+					htmlx.ajax('POST', '/findfuzzy', '#soundtracks-container');
 					document.getElementById("search_term").focus();
 					
+					// Add event listeners for radio buttons
+					document.querySelectorAll('input[name="search_type"]').forEach(radio => {
+						radio.addEventListener('change', updateSearchEndpoint);
+					});
+					
 					// Initialize dark mode from localStorage (default to dark)
 					const savedTheme = localStorage.getItem('theme') || 'dark';
 					if (savedTheme === 'dark') {
@@ -38,7 +64,8 @@ templ HelloForm() {
 			
 			document.getElementById("clear").addEventListener("click", function (event) {
 				document.getElementById("search_term").value = "";
-				htmx.ajax('POST', '/find', '#soundtracks-container');
+				// Use current search type endpoint
+				htmlx.ajax('POST', getSearchEndpoint(), '#soundtracks-container');
 				document.getElementById("search_term").focus();
 			});
 		</script>
@@ -51,4 +78,4 @@ templ FoundSoundtracks(soundtracks []string) {
 			<p class="soundtrack-text">{ soundtrack }</p>
 		</div>
 	}
-}
+}
@@ -175,17 +175,17 @@ func SyncResult() SyncResponse {
 	}
 }

-func SyncSoundtracksNewFull() {
-	syncSoundtracksNew(true)
+func SyncSoundtracksFull() {
+	syncSoundtracks(true)
 	Reset()
 }

-func SyncSoundtracksNewOnlyChanges() {
-	syncSoundtracksNew(false)
+func SyncSoundtracksOnlyChanges() {
+	syncSoundtracks(false)
 	Reset()
 }

-func syncSoundtracksNew(full bool) {
+func syncSoundtracks(full bool) {
 	musicPath := os.Getenv("MUSIC_PATH")
 	fmt.Printf("dir: %s\n", musicPath)
 	logging.GetLogger().Debug("Folder to sync", zap.String("MUSIC_PATH", musicPath))
@@ -233,11 +233,11 @@ func syncSoundtracksNew(full bool) {
 	for _, dir := range directories {
 		pool.Submit(func() {
 			defer syncWg.Done()
-			syncSoundtrackNew(dir, foldersToSkip, musicPath, full)
+			syncSoundtrack(dir, foldersToSkip, musicPath, full)
 		})
 	}
 	syncWg.Wait()
-	checkBrokenSongsNew()
+	checkBrokenSongs()

 	soundtracksAfterSync, err = repo.FindAllSoundtracks(BackendCtx())
 	handleError("FindAllSoundtracks After", err, "")
@@ -250,7 +250,7 @@ func syncSoundtracksNew(full bool) {
 	Syncing = false
 }

-func checkBrokenSongsNew() {
+func checkBrokenSongs() {
 	allSongs, err := repo.FetchAllSongs(BackendCtx())
 	handleError("FetchAllSongs", err, "")
 	var brokenWg sync.WaitGroup
@@ -261,7 +261,7 @@ func checkBrokenSongsNew() {
 	for _, song := range allSongs {
 		poolBroken.Submit(func() {
 			defer brokenWg.Done()
-			checkBrokenSongNew(song)
+			checkBrokenSong(song)
 		})
 	}
 	brokenWg.Wait()
@@ -271,7 +271,7 @@ func checkBrokenSongsNew() {
 	}
 }

-func checkBrokenSongNew(song repository.Song) {
+func checkBrokenSong(song repository.Song) {
 	//Check if file exists and open
 	openFile, err := os.Open(song.Path)
 	if err != nil {
@@ -286,7 +286,7 @@ func checkBrokenSongNew(song repository.Song) {
 	}
 }

-func syncSoundtrackNew(file os.DirEntry, foldersToSkip []string, baseDir string, full bool) {
+func syncSoundtrack(file os.DirEntry, foldersToSkip []string, baseDir string, full bool) {
 	if file.IsDir() && !contains(foldersToSkip, file.Name()) {
 		logging.GetLogger().Debug("Syncing soundtrack", zap.String("soundtrack", file.Name()))
 		soundtrackDir := baseDir + file.Name() + "/"
@@ -328,46 +328,14 @@ func syncSoundtrackNew(file os.DirEntry, foldersToSkip []string, baseDir string,
 		}
 		switch status {
 		case NewSoundtrack:
-			if id != -1 {
-				for _, entry := range entries {
-					fileInfo, err := entry.Info()
-					if err != nil {
-						logging.GetLogger().Error("Failed to get file info", zap.String("error", err.Error()))
-						continue
-					}
-					id = getIdFromFileNew(fileInfo)
-					if id != -1 {
-						break
-					}
-				}
-				err = repo.InsertSoundtrackWithExistingId(BackendCtx(), repository.InsertSoundtrackWithExistingIdParams{ID: id, SoundtrackName: file.Name(), Path: soundtrackDir, Hash: dirHash})
-				handleError("InsertSoundtrackWithExistingId", err, "")
-				if err != nil {
-					logging.GetLogger().Debug("Soundtrack already exists, removing old ID file",
-						zap.Int32("id", id),
-						zap.String("soundtrack_dir", soundtrackDir))
-					fileName := soundtrackDir + "/." + strconv.Itoa(int(id)) + ".id"
-					logging.GetLogger().Debug("Removing ID file", zap.String("filename", fileName))
-
-					err := os.Remove(fileName)
-					if err != nil {
-						logging.GetLogger().Error("Failed to remove ID file", zap.String("filename", fileName), zap.String("error", err.Error()))
-					}
-
-					newDirHash := getHashForDir(soundtrackDir)
-
-					id = insertSoundtrackNew(file.Name(), soundtrackDir, newDirHash)
-				}
-			} else {
-				id = insertSoundtrackNew(file.Name(), soundtrackDir, dirHash)
-			}
+			id = insertSoundtrack(file.Name(), soundtrackDir, dirHash)
 			logging.GetLogger().Debug("New soundtrack detected",
 				zap.Int32("id", id),
 				zap.String("soundtrack", file.Name()),
 				zap.String("hash", dirHash),
 				zap.String("status", status.String()))
 			soundtracksAdded = append(soundtracksAdded, file.Name())
-			newCheckSongs(entries, soundtrackDir, id)
+			checkSongs(entries, soundtrackDir, id)
 		case SoundtrackChanged:
 			logging.GetLogger().Debug("Soundtrack changed",
 				zap.Int32("id", id),
@@ -377,7 +345,7 @@ func syncSoundtrackNew(file os.DirEntry, foldersToSkip []string, baseDir string,
 			err = repo.UpdateSoundtrackHash(BackendCtx(), repository.UpdateSoundtrackHashParams{Hash: dirHash, ID: id})
 			handleError("UpdateSoundtrackHash", err, "")
 			soundtracksChangedContent = append(soundtracksChangedContent, file.Name())
-			newCheckSongs(entries, soundtrackDir, id)
+			checkSongs(entries, soundtrackDir, id)
 		case TitleChanged:
 			logging.GetLogger().Debug("Soundtrack title changed",
 				zap.Int32("id", id),
@@ -387,7 +355,7 @@ func syncSoundtrackNew(file os.DirEntry, foldersToSkip []string, baseDir string,
 				zap.String("status", status.String()))
 			err = repo.UpdateSoundtrackName(BackendCtx(), repository.UpdateSoundtrackNameParams{Name: file.Name(), Path: soundtrackDir, ID: id})
 			handleError("UpdateSoundtrackName", err, "")
-			newCheckSongs(entries, soundtrackDir, id)
+			checkSongs(entries, soundtrackDir, id)
 			if soundtracksChangedTitle == nil {
 				soundtracksChangedTitle = make(map[string]string)
 			}
@@ -405,7 +373,7 @@ func syncSoundtrackNew(file os.DirEntry, foldersToSkip []string, baseDir string,
 				}
 			}
 			if !found {
-				newCheckSongs(entries, soundtrackDir, id)
+				checkSongs(entries, soundtrackDir, id)
 				soundtracksReAdded = append(soundtracksReAdded, file.Name())
 				logging.GetLogger().Debug("Soundtrack added again",
 					zap.Int32("id", id),
@@ -430,7 +398,7 @@ func syncSoundtrackNew(file os.DirEntry, foldersToSkip []string, baseDir string,
 		zap.Int("percent", int((foldersSynced/numberOfFoldersToSync)*100)))
 }

-func insertSoundtrackNew(name string, path string, hash string) int32 {
+func insertSoundtrack(name string, path string, hash string) int32 {
 	var duplicateError = errors.New("ERROR: duplicate key value violates unique")
 	id, err := repo.InsertSoundtrack(BackendCtx(), repository.InsertSoundtrackParams{SoundtrackName: name, Path: path, Hash: hash})
 	handleError("InsertSoundtrack", err, "")
@@ -440,14 +408,14 @@ func insertSoundtrackNew(name string, path string, hash string) int32 {
 			logging.GetLogger().Debug("Resetting soundtrack ID sequence")
 			_, err = repo.ResetSoundtrackIdSeq(BackendCtx())
 			handleError("ResetSoundtrackIdSeq", err, "")
-			id = insertSoundtrackNew(name, path, hash)
+			id = insertSoundtrack(name, path, hash)
 		}
 	}
 	return id

 }

-func newCheckSongs(entries []os.DirEntry, soundtrackDir string, id int32) int32 {
+func checkSongs(entries []os.DirEntry, soundtrackDir string, id int32) int32 {
 	//hasher := md5.New()
 	var numberOfSongs int32
 	numberOfFiles := len(entries)
@@ -457,7 +425,7 @@ func newCheckSongs(entries []os.DirEntry, soundtrackDir string, id int32) int32
 	for _, entry := range entries {
 		poolSong.Submit(func() {
 			defer songWg.Done()
-			if newCheckSong(entry, soundtrackDir, id) {
+			if checkSong(entry, soundtrackDir, id) {
 				numberOfSongs++
 			}
 		})
@@ -466,7 +434,7 @@ func newCheckSongs(entries []os.DirEntry, soundtrackDir string, id int32) int32
 	return numberOfSongs
 }

-func newCheckSong(entry os.DirEntry, soundtrackDir string, id int32) bool {
+func checkSong(entry os.DirEntry, soundtrackDir string, id int32) bool {
 	fileInfo, err := entry.Info()
 	if err != nil {
 		logging.GetLogger().Error("Failed to get file info", zap.String("filename", entry.Name()), zap.String("error", err.Error()))
@@ -570,7 +538,7 @@ func getHashForFile(path string) string {
 	return hex.EncodeToString(hasher.Sum(nil))
 }

-func getIdFromFileNew(file os.FileInfo) int32 {
+func getIdFromFile(file os.FileInfo) int32 {
 	name := file.Name()
 	if !file.IsDir() && strings.HasSuffix(name, ".id") {
 		name = strings.Replace(name, ".id", "", 1)
@@ -9,10 +9,10 @@ import (

 func TestContains(t *testing.T) {
 	tests := []struct {
-		name      string
-		slice     []string
-		search    string
-		expected  bool
+		name     string
+		slice    []string
+		search   string
+		expected bool
 	}{
 		{
 			name:     "element exists",
@@ -155,9 +155,9 @@ func TestGetIdFromFileNew(t *testing.T) {

 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			result := getIdFromFileNew(tt.fileInfo)
+			result := getIdFromFile(tt.fileInfo)
 			if result != tt.expected {
-				t.Errorf("getIdFromFileNew() = %v, want %v", result, tt.expected)
+				t.Errorf("getIdFromFile() = %v, want %v", result, tt.expected)
 			}
 		})
 	}
@@ -172,10 +172,10 @@ type mockFileInfoForSong struct {

 func (m *mockFileInfoForSong) Name() string       { return m.name }
 func (m *mockFileInfoForSong) Size() int64        { return m.size }
-func (m *mockFileInfoForSong) Mode() os.FileMode   { return 0 }
-func (m *mockFileInfoForSong) ModTime() time.Time  { return time.Time{} }
-func (m *mockFileInfoForSong) IsDir() bool         { return m.isDir }
-func (m *mockFileInfoForSong) Sys() interface{}    { return nil }
+func (m *mockFileInfoForSong) Mode() os.FileMode  { return 0 }
+func (m *mockFileInfoForSong) ModTime() time.Time { return time.Time{} }
+func (m *mockFileInfoForSong) IsDir() bool        { return m.isDir }
+func (m *mockFileInfoForSong) Sys() interface{}   { return nil }

 type mockFileInfoForCover struct {
 	name  string
@@ -185,10 +185,10 @@ type mockFileInfoForCover struct {

 func (m *mockFileInfoForCover) Name() string       { return m.name }
 func (m *mockFileInfoForCover) Size() int64        { return m.size }
-func (m *mockFileInfoForCover) Mode() os.FileMode   { return 0 }
-func (m *mockFileInfoForCover) ModTime() time.Time  { return time.Time{} }
-func (m *mockFileInfoForCover) IsDir() bool         { return m.isDir }
-func (m *mockFileInfoForCover) Sys() interface{}    { return nil }
+func (m *mockFileInfoForCover) Mode() os.FileMode  { return 0 }
+func (m *mockFileInfoForCover) ModTime() time.Time { return time.Time{} }
+func (m *mockFileInfoForCover) IsDir() bool        { return m.isDir }
+func (m *mockFileInfoForCover) Sys() interface{}   { return nil }

 type mockFileInfoForId struct {
 	name  string
@@ -198,7 +198,7 @@ type mockFileInfoForId struct {

 func (m *mockFileInfoForId) Name() string       { return m.name }
 func (m *mockFileInfoForId) Size() int64        { return m.size }
-func (m *mockFileInfoForId) Mode() os.FileMode   { return 0 }
-func (m *mockFileInfoForId) ModTime() time.Time  { return time.Time{} }
-func (m *mockFileInfoForId) IsDir() bool         { return m.isDir }
-func (m *mockFileInfoForId) Sys() interface{}    { return nil }
+func (m *mockFileInfoForId) Mode() os.FileMode  { return 0 }
+func (m *mockFileInfoForId) ModTime() time.Time { return time.Time{} }
+func (m *mockFileInfoForId) IsDir() bool        { return m.isDir }
+func (m *mockFileInfoForId) Sys() interface{}   { return nil }
@@ -0,0 +1,22 @@
+package middleware
+
+import (
+	"music-server/internal/backend"
+	"music-server/internal/logging"
+	"net/http"
+
+	"github.com/labstack/echo/v5"
+)
+
+// SyncCheckMiddleware blocks requests when syncing is in progress.
+// It returns HTTP 423 Locked with a standard message.
+// This middleware should be applied to handlers that cannot execute during sync.
+func SyncCheckMiddleware(next echo.HandlerFunc) echo.HandlerFunc {
+	return func(c *echo.Context) error {
+		if backend.Syncing {
+			logging.GetLogger().Info("Syncing is in progress - request blocked")
+			return c.JSON(http.StatusLocked, "Syncing is in progress")
+		}
+		return next(c)
+	}
+}
@@ -31,10 +31,6 @@ func NewMusicHandler() *MusicHandler {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music [get]
 func (m *MusicHandler) GetSong(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	song := ctx.QueryParam("song")
 	if song == "" {
 		return ctx.String(http.StatusBadRequest, "song can't be empty")
@@ -58,10 +54,6 @@ func (m *MusicHandler) GetSong(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/soundTest [get]
 func (m *MusicHandler) GetSoundCheckSong(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	songPath := backend.GetSoundCheckSong()
 	file, err := os.Open(songPath)
 	if err != nil {
@@ -80,10 +72,6 @@ func (m *MusicHandler) GetSoundCheckSong(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/reset [get]
 func (m *MusicHandler) ResetMusic(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	backend.Reset()
 	return ctx.NoContent(http.StatusOK)
 }
@@ -98,10 +86,6 @@ func (m *MusicHandler) ResetMusic(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/rand [get]
 func (m *MusicHandler) GetRandomSong(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	songPath := backend.GetRandomSong()
 	file, err := os.Open(songPath)
 	if err != nil {
@@ -121,10 +105,6 @@ func (m *MusicHandler) GetRandomSong(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/rand/low [get]
 func (m *MusicHandler) GetRandomSongLowChance(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	songPath := backend.GetRandomSongLowChance()
 	file, err := os.Open(songPath)
 	if err != nil {
@@ -144,10 +124,6 @@ func (m *MusicHandler) GetRandomSongLowChance(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/rand/classic [get]
 func (m *MusicHandler) GetRandomSongClassic(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	songPath := backend.GetRandomSongClassic()
 	file, err := os.Open(songPath)
 	if err != nil {
@@ -193,10 +169,6 @@ func (m *MusicHandler) GetPlayedSongs(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/next [get]
 func (m *MusicHandler) GetNextSong(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	songPath := backend.GetNextSong()
 	file, err := os.Open(songPath)
 	if err != nil {
@@ -216,10 +188,6 @@ func (m *MusicHandler) GetNextSong(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/previous [get]
 func (m *MusicHandler) GetPreviousSong(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	songPath := backend.GetPreviousSong()
 	file, err := os.Open(songPath)
 	if err != nil {
@@ -239,10 +207,6 @@ func (m *MusicHandler) GetPreviousSong(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/all/order [get]
 func (m *MusicHandler) GetAllSoundtracks(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	soundtrackList := backend.GetAllSoundtracks()
 	return ctx.JSON(http.StatusOK, soundtrackList)
 }
@@ -257,10 +221,6 @@ func (m *MusicHandler) GetAllSoundtracks(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/all/random [get]
 func (m *MusicHandler) GetAllSoundtracksRandom(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	soundtrackList := backend.GetAllSoundtracksRandom()
 	return ctx.JSON(http.StatusOK, soundtrackList)
 }
@@ -277,10 +237,6 @@ func (m *MusicHandler) GetAllSoundtracksRandom(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/played [put]
 func (m *MusicHandler) PutPlayed(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	song, err := strconv.Atoi(ctx.QueryParam("song"))
 	if err != nil {
 		return ctx.JSON(http.StatusBadRequest, err.Error())
@@ -299,10 +255,6 @@ func (m *MusicHandler) PutPlayed(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/addQue [get]
 func (m *MusicHandler) AddLatestToQue(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	backend.AddLatestToQue()
 	return ctx.NoContent(http.StatusOK)
 }
@@ -316,10 +268,6 @@ func (m *MusicHandler) AddLatestToQue(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /music/addPlayed [get]
 func (m *MusicHandler) AddLatestPlayed(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Info("Syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	backend.AddLatestPlayed()
 	return ctx.NoContent(http.StatusOK)
 }
@@ -50,8 +50,9 @@ func (s *Server) RegisterRoutes() http.Handler {
 	fileServer := http.FileServer(http.FS(web.Assets))
 	e.GET("/assets/*", echo.WrapHandler(fileServer))

-	e.GET("/search", echo.WrapHandler(templ.Handler(web.HelloForm())))
+	e.GET("/search", echo.WrapHandler(templ.Handler(web.SearchForm())))
 	e.POST("/find", echo.WrapHandler(http.HandlerFunc(web.FindSoundtrackWebHandler)))
+	e.POST("/findfuzzy", echo.WrapHandler(http.HandlerFunc(web.FindSoundtrackFuzzyWebHandler)))

 	e.Static("/", "/frontend")

@@ -82,32 +83,32 @@ func (s *Server) RegisterRoutes() http.Handler {

 	sync := NewSyncHandler()
 	syncGroup := e.Group("/sync")
-	syncGroup.GET("", deprecatedMiddleware(sync.SyncSoundtracksNewOnlyChanges))
+	syncGroup.GET("", deprecatedMiddleware(middleware.SyncCheckMiddleware(sync.SyncSoundtracksNewOnlyChanges)))
 	syncGroup.GET("/progress", deprecatedMiddleware(sync.SyncProgress))
-	syncGroup.GET("/new", deprecatedMiddleware(sync.SyncSoundtracksNewOnlyChanges))
-	syncGroup.GET("/full", deprecatedMiddleware(sync.SyncSoundtracksNewFull))
-	syncGroup.GET("/new/full", deprecatedMiddleware(sync.SyncSoundtracksNewFull))
-	syncGroup.GET("/quick", deprecatedMiddleware(sync.SyncSoundtracksNewOnlyChanges))
-	syncGroup.GET("/reset", deprecatedMiddleware(sync.ResetDB))
+	syncGroup.GET("/new", deprecatedMiddleware(middleware.SyncCheckMiddleware(sync.SyncSoundtracksNewOnlyChanges)))
+	syncGroup.GET("/full", deprecatedMiddleware(middleware.SyncCheckMiddleware(sync.SyncSoundtracksNewFull)))
+	syncGroup.GET("/new/full", deprecatedMiddleware(middleware.SyncCheckMiddleware(sync.SyncSoundtracksNewFull)))
+	syncGroup.GET("/quick", deprecatedMiddleware(middleware.SyncCheckMiddleware(sync.SyncSoundtracksNewOnlyChanges)))
+	syncGroup.GET("/reset", deprecatedMiddleware(middleware.SyncCheckMiddleware(sync.ResetDB)))

 	music := NewMusicHandler()
 	musicGroup := e.Group("/music")
-	musicGroup.GET("", deprecatedMiddleware(music.GetSong))
-	musicGroup.GET("/soundTest", deprecatedMiddleware(music.GetSoundCheckSong))
-	musicGroup.GET("/reset", deprecatedMiddleware(music.ResetMusic))
-	musicGroup.GET("/rand", deprecatedMiddleware(music.GetRandomSong))
-	musicGroup.GET("/rand/low", deprecatedMiddleware(music.GetRandomSongLowChance))
-	musicGroup.GET("/rand/classic", deprecatedMiddleware(music.GetRandomSongClassic))
+	musicGroup.GET("", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetSong)))
+	musicGroup.GET("/soundTest", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetSoundCheckSong)))
+	musicGroup.GET("/reset", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.ResetMusic)))
+	musicGroup.GET("/rand", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetRandomSong)))
+	musicGroup.GET("/rand/low", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetRandomSongLowChance)))
+	musicGroup.GET("/rand/classic", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetRandomSongClassic)))
 	musicGroup.GET("/info", deprecatedMiddleware(music.GetSongInfo))
 	musicGroup.GET("/list", deprecatedMiddleware(music.GetPlayedSongs))
-	musicGroup.GET("/next", deprecatedMiddleware(music.GetNextSong))
-	musicGroup.GET("/previous", deprecatedMiddleware(music.GetPreviousSong))
-	musicGroup.GET("/all", deprecatedMiddleware(music.GetAllSoundtracksRandom))
-	musicGroup.GET("/all/order", deprecatedMiddleware(music.GetAllSoundtracks))
-	musicGroup.GET("/all/random", deprecatedMiddleware(music.GetAllSoundtracksRandom))
-	musicGroup.PUT("/played", deprecatedMiddleware(music.PutPlayed))
-	musicGroup.GET("/addQue", deprecatedMiddleware(music.AddLatestToQue))
-	musicGroup.GET("/addPlayed", deprecatedMiddleware(music.AddLatestPlayed))
+	musicGroup.GET("/next", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetNextSong)))
+	musicGroup.GET("/previous", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetPreviousSong)))
+	musicGroup.GET("/all", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetAllSoundtracksRandom)))
+	musicGroup.GET("/all/order", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetAllSoundtracks)))
+	musicGroup.GET("/all/random", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.GetAllSoundtracksRandom)))
+	musicGroup.PUT("/played", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.PutPlayed)))
+	musicGroup.GET("/addQue", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.AddLatestToQue)))
+	musicGroup.GET("/addPlayed", deprecatedMiddleware(middleware.SyncCheckMiddleware(music.AddLatestPlayed)))

 	// ============================================
 	// API v1 Routes with Token Authentication
@@ -44,13 +44,9 @@ func (s *SyncHandler) SyncProgress(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /sync [get]
 func (s *SyncHandler) SyncSoundtracksNewOnlyChanges(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Warn("Syncing is already in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	logging.GetLogger().Info("Starting sync with only changes")
 	backend.Syncing = true
-	go backend.SyncSoundtracksNewOnlyChanges()
+	go backend.SyncSoundtracksOnlyChanges()
 	return ctx.JSON(http.StatusOK, "Start syncing soundtracks")
 }

@@ -64,13 +60,9 @@ func (s *SyncHandler) SyncSoundtracksNewOnlyChanges(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /sync/full [get]
 func (s *SyncHandler) SyncSoundtracksNewFull(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Warn("Syncing is already in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	logging.GetLogger().Info("Starting full sync")
 	backend.Syncing = true
-	go backend.SyncSoundtracksNewFull()
+	go backend.SyncSoundtracksFull()
 	return ctx.JSON(http.StatusOK, "Start syncing soundtracks full")
 }

@@ -84,10 +76,6 @@ func (s *SyncHandler) SyncSoundtracksNewFull(ctx *echo.Context) error {
 // @Failure 423 {string} string "Syncing is in progress"
 // @Router /sync/reset [get]
 func (s *SyncHandler) ResetDB(ctx *echo.Context) error {
-	if backend.Syncing {
-		logging.GetLogger().Warn("Cannot reset - syncing is in progress")
-		return ctx.JSON(http.StatusLocked, "Syncing is in progress")
-	}
 	logging.GetLogger().Info("Resetting soundtracks database")
 	backend.ResetDB()
 	return ctx.JSON(http.StatusOK, "Soundtracks and songs are deleted from the database")