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feat(server): implement FTS5-based full-text search (#5079)

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* build: add sqlite_fts5 build tag to enable FTS5 support

* feat: add SearchBackend config option (default: fts)

* feat: add buildFTS5Query for safe FTS5 query preprocessing

* feat: add FTS5 search backend with config toggle, refactor legacy search

- Add searchExprFunc type and getSearchExpr() for backend selection
- Rename fullTextExpr to legacySearchExpr
- Add ftsSearchExpr using FTS5 MATCH subquery
- Update fullTextFilter in sql_restful.go to use configured backend

* feat: add FTS5 migration with virtual tables, triggers, and search_participants

Creates FTS5 virtual tables for media_file, album, and artist with
unicode61 tokenizer and diacritic folding. Adds search_participants
column, populates from JSON, and sets up INSERT/UPDATE/DELETE triggers.

* feat: populate search_participants in PostMapArgs for FTS5 indexing

* test: add FTS5 search integration tests

* fix: exclude FTS5 virtual tables from e2e DB restore

The restoreDB function iterates all tables in sqlite_master and
runs DELETE + INSERT to reset state. FTS5 contentless virtual tables
cannot be directly deleted from. Since triggers handle FTS5 sync
automatically, simply skip tables matching *_fts and *_fts_* patterns.

* build: add compile-time guard for sqlite_fts5 build tag

Same pattern as netgo: compilation fails with a clear error if
the sqlite_fts5 build tag is missing.

* build: add sqlite_fts5 tag to reflex dev server config

* build: extract GO_BUILD_TAGS variable in Makefile to avoid duplication

* fix: strip leading * from FTS5 queries to prevent "unknown special query" error

* feat: auto-append prefix wildcard to FTS5 search tokens for broader matching

Every plain search token now gets a trailing * appended (e.g., "love" becomes
"love*"), so searching for "love" also matches "lovelace", "lovely", etc.
Quoted phrases are preserved as exact matches without wildcards. Results are
ordered alphabetically by name/title, so shorter exact matches naturally
appear first.

* fix: clarify comments about FTS5 operator neutralization

The comments said "strip" but the code lowercases operators to
neutralize them (FTS5 operators are case-sensitive). Updated comments
to accurately describe the behavior.

* fix: use fmt.Sprintf for FTS5 phrase placeholders

The previous encoding used rune('0'+index) which silently breaks with
10+ quoted phrases. Use fmt.Sprintf for arbitrary index support.

* fix: validate and normalize SearchBackend config option

Normalize the value to lowercase and fall back to "fts" with a log
warning for unrecognized values. This prevents silent misconfiguration
from typos like "FTS", "Legacy", or "fts5".

* refactor: improve documentation for build tags and FTS5 requirements

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor: convert FTS5 query and search backend normalization tests to DescribeTable format

Signed-off-by: Deluan <deluan@navidrome.org>

* fix: add sqlite_fts5 build tag to golangci configuration

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: add UISearchDebounceMs configuration option and update related components

Signed-off-by: Deluan <deluan@navidrome.org>

* fix: fall back to legacy search when SearchFullString is enabled

FTS5 is token-based and cannot match substrings within words, so
getSearchExpr now returns legacySearchExpr when SearchFullString
is true, regardless of SearchBackend setting.

* fix: add sqlite_fts5 build tag to CI pipeline and Dockerfile

* fix: add WHEN clauses to FTS5 AFTER UPDATE triggers

Added WHEN clauses to the media_file_fts_au, album_fts_au, and
artist_fts_au triggers so they only fire when FTS-indexed columns
actually change. Previously, every row update (e.g., play count, rating,
starred status) triggered an unnecessary delete+insert cycle in the FTS
shadow tables. The WHEN clauses use IS NOT for NULL-safe comparison of
each indexed column, avoiding FTS index churn for non-indexed updates.

* feat: add SearchBackend configuration option to data and insights components

Signed-off-by: Deluan <deluan@navidrome.org>

* fix: enhance input sanitization for FTS5 by stripping additional punctuation and special characters

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: add search_normalized column for punctuated name search (R.E.M., AC/DC)

Add index-time normalization and query-time single-letter collapsing to
fix FTS5 search for punctuated names. A new search_normalized column
stores concatenated forms of punctuated words (e.g., "R.E.M." → "REM",
"AC/DC" → "ACDC") and is indexed in FTS5 tables. At query time, runs of
consecutive single letters (from dot-stripping) are collapsed into OR
expressions like ("R E M" OR REM*) to match both the original tokens and
the normalized form. This enables searching by "R.E.M.", "REM", "AC/DC",
"ACDC", "A-ha", or "Aha" and finding the correct results.

* refactor: simplify isSingleUnicodeLetter to avoid []rune allocation

Use utf8.DecodeRuneInString to check for a single Unicode letter
instead of converting the entire string to a []rune slice.

* feat: define ftsSearchColumns for flexible FTS5 search column inclusion

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: update collapseSingleLetterRuns to return quoted phrases for abbreviations

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: implement extractPunctuatedWords to handle artist/album names with embedded punctuation

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: implement extractPunctuatedWords to handle artist/album names with embedded punctuation

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor: punctuated word handling to improve processing of artist/album names

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: add CJK support for search queries with LIKE filters

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: enhance FTS5 search by adding album version support and CJK handling

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor: search configuration to use structured options

Signed-off-by: Deluan <deluan@navidrome.org>

* feat: enhance search functionality to support punctuation-only queries and update related tests

Signed-off-by: Deluan <deluan@navidrome.org>

---------

Signed-off-by: Deluan <deluan@navidrome.org>
This commit is contained in:
Deluan Quintão
2026-02-21 17:52:42 -05:00
committed by GitHub
parent 6f5f58ae9d
commit 54de0dbc52
35 changed files with 1283 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files
conf/configuration.go
+24 -2
View File
@@ -58,7 +58,7 @@ type configOptions struct {
SmartPlaylistRefreshDelay time.Duration
AutoTranscodeDownload bool
DefaultDownsamplingFormat string
SearchFullString bool
Search searchOptions `json:",omitzero"`
SimilarSongsMatchThreshold int
RecentlyAddedByModTime bool
PreferSortTags bool
@@ -82,6 +82,7 @@ type configOptions struct {
DefaultTheme string
DefaultLanguage string
DefaultUIVolume int
UISearchDebounceMs int
EnableReplayGain bool
EnableCoverAnimation bool
EnableNowPlaying bool
@@ -251,6 +252,11 @@ type extAuthOptions struct {
UserHeader string
}
type searchOptions struct {
Backend string
FullString bool
}
var (
Server = &configOptions{}
hooks []func()
@@ -344,6 +350,8 @@ func Load(noConfigDump bool) {
os.Exit(1)
}
Server.Search.Backend = normalizeSearchBackend(Server.Search.Backend)
if Server.BaseURL != "" {
u, err := url.Parse(Server.BaseURL)
if err != nil {
@@ -392,6 +400,7 @@ func Load(noConfigDump bool) {
logDeprecatedOptions("Scanner.GenreSeparators", "")
logDeprecatedOptions("Scanner.GroupAlbumReleases", "")
logDeprecatedOptions("DevEnableBufferedScrobble", "") // Deprecated: Buffered scrobbling is now always enabled and this option is ignored
logDeprecatedOptions("SearchFullString", "Search.FullString")
logDeprecatedOptions("ReverseProxyWhitelist", "ExtAuth.TrustedSources")
logDeprecatedOptions("ReverseProxyUserHeader", "ExtAuth.UserHeader")
logDeprecatedOptions("HTTPSecurityHeaders.CustomFrameOptionsValue", "HTTPHeaders.FrameOptions")
@@ -539,6 +548,17 @@ func validateSchedule(schedule, field string) (string, error) {
return schedule, err
}
func normalizeSearchBackend(value string) string {
v := strings.ToLower(strings.TrimSpace(value))
switch v {
case "fts", "legacy":
return v
default:
log.Error("Invalid Search.Backend value, falling back to 'fts'", "value", value)
return "fts"
}
}
// AddHook is used to register initialization code that should run as soon as the config is loaded
func AddHook(hook func()) {
hooks = append(hooks, hook)
@@ -585,7 +605,8 @@ func setViperDefaults() {
viper.SetDefault("enablemediafilecoverart", true)
viper.SetDefault("autotranscodedownload", false)
viper.SetDefault("defaultdownsamplingformat", consts.DefaultDownsamplingFormat)
viper.SetDefault("searchfullstring", false)
viper.SetDefault("search.fullstring", false)
viper.SetDefault("search.backend", "fts")
viper.SetDefault("similarsongsmatchthreshold", 85)
viper.SetDefault("recentlyaddedbymodtime", false)
viper.SetDefault("prefersorttags", false)
@@ -604,6 +625,7 @@ func setViperDefaults() {
viper.SetDefault("defaulttheme", "Dark")
viper.SetDefault("defaultlanguage", "")
viper.SetDefault("defaultuivolume", consts.DefaultUIVolume)
viper.SetDefault("uisearchdebouncems", consts.DefaultUISearchDebounceMs)
viper.SetDefault("enablereplaygain", true)
viper.SetDefault("enablecoveranimation", true)
viper.SetDefault("enablenowplaying", true)