Add OS Lyrics extension (#2656)

* draft commit

* time to fight pipeline

* round 2 changes

* remove unnecessary line

* fight taglib. again

* make taglib work again???

* add id3 tags

* taglib 1.12 vs 1.13

* use int instead for windows

* store as json now

* add migration, more tests

* support repeated line, multiline

* fix ms and support .m, .mm, .mmm

* address some concerns, make cpp a bit safer

* separate responses from model

* remove [:]

* Add trace log

* Try to unblock pipeline

* Fix merge errors

* Fix SIGSEGV error (proper handling of empty frames)

* Add fallback artist/title to structured lyrics

* Rename conflicting named vars

* Fix tests

* Do we still need ffmpeg in the pipeline?

* Revert "Do we still need ffmpeg in the pipeline?"

Yes we do.

This reverts commit 87df7f6df7.

* Does this passes now, with a newer ffmpeg version?

* Revert "Does this passes now, with a newer ffmpeg version?"

No, it does not :(

This reverts commit 372eb4b0ae.

* My OCD made me do it :P

---------

Co-authored-by: Deluan Quintão <deluan@navidrome.org>

db/migration/20231209211223_alter_lyric_column.go

@@ -0,0 +1,82 @@
+package migrations
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+
+	"github.com/navidrome/navidrome/model"
+	"github.com/pressly/goose/v3"
+)
+
+func init() {
+	goose.AddMigrationContext(upAlterLyricColumn, downAlterLyricColumn)
+}
+
+func upAlterLyricColumn(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `alter table media_file rename COLUMN lyrics TO lyrics_old`)
+	if err != nil {
+		return err
+	}
+
+	_, err = tx.ExecContext(ctx, `alter table media_file add lyrics JSONB default '[]';`)
+	if err != nil {
+		return err
+	}
+
+	stmt, err := tx.Prepare(`update media_file SET lyrics = ? where id = ?`)
+	if err != nil {
+		return err
+	}
+
+	rows, err := tx.Query(`select id, lyrics_old FROM media_file WHERE lyrics_old <> '';`)
+	if err != nil {
+		return err
+	}
+
+	var id string
+	var lyrics sql.NullString
+	for rows.Next() {
+		err = rows.Scan(&id, &lyrics)
+		if err != nil {
+			return err
+		}
+
+		if !lyrics.Valid {
+			continue
+		}
+
+		lyrics, err := model.ToLyrics("xxx", lyrics.String)
+		if err != nil {
+			return err
+		}
+
+		text, err := json.Marshal(model.LyricList{*lyrics})
+		if err != nil {
+			return err
+		}
+
+		_, err = stmt.Exec(string(text), id)
+		if err != nil {
+			return err
+		}
+	}
+
+	err = rows.Err()
+	if err != nil {
+		return err
+	}
+
+	_, err = tx.ExecContext(ctx, `ALTER TABLE media_file DROP COLUMN lyrics_old;`)
+	if err != nil {
+		return err
+	}
+
+	notice(tx, "A full rescan will be performed to pick up additional lyrics (existing lyrics have been preserved)")
+	return forceFullRescan(tx)
+}
+
+func downAlterLyricColumn(ctx context.Context, tx *sql.Tx) error {
+	// This code is executed when the migration is rolled back.
+	return nil
+}