Add sort tags and use them in search

db/migration/20200423204116_add_sort_fields.go

@@ -0,0 +1,64 @@
+package migration
+
+import (
+	"database/sql"
+	"github.com/pressly/goose"
+)
+
+func init() {
+	goose.AddMigration(Up20200423204116, Down20200423204116)
+}
+
+func Up20200423204116(tx *sql.Tx) error {
+	_, err := tx.Exec(`
+alter table artist
+	add order_artist_name varchar(255) collate nocase;
+alter table artist
+	add sort_artist_name varchar(255) collate nocase;
+create index if not exists artist_order_artist_name
+	on artist (order_artist_name);
+
+alter table album
+	add order_album_name varchar(255) collate nocase;
+alter table album
+	add order_album_artist_name varchar(255) collate nocase;
+alter table album
+	add sort_album_name varchar(255) collate nocase;
+alter table album
+	add sort_artist_name varchar(255) collate nocase;
+alter table album
+	add sort_album_artist_name varchar(255) collate nocase;
+create index if not exists album_order_album_name
+	on album (order_album_name);
+create index if not exists album_order_album_artist_name
+	on album (order_album_artist_name);
+
+alter table media_file
+	add order_album_name varchar(255) collate nocase;
+alter table media_file
+	add order_album_artist_name varchar(255) collate nocase;
+alter table media_file
+	add order_artist_name varchar(255) collate nocase;
+alter table media_file
+	add sort_album_name varchar(255) collate nocase;
+alter table media_file
+	add sort_artist_name varchar(255) collate nocase;
+alter table media_file
+	add sort_album_artist_name varchar(255) collate nocase;
+alter table media_file
+	add sort_title varchar(255) collate nocase;
+create index if not exists media_file_order_album_name
+	on media_file (order_album_name);
+create index if not exists media_file_order_artist_name
+	on media_file (order_artist_name);
+`)
+	if err != nil {
+		return err
+	}
+	notice(tx, "A full rescan will be performed to change the search behaviour")
+	return forceFullRescan(tx)
+}
+
+func Down20200423204116(tx *sql.Tx) error {
+	return nil
+}