Make playlist title unique

src/main/java/com/bivashy/backend/composer/model/Playlist.java

@@ -28,7 +28,7 @@ public class Playlist {
     @JoinColumn(name = "owner_id", nullable = false)
     private User owner;
 
-    @Column(nullable = false, length = 500)
+    @Column(unique = true, nullable = false, length = 500)
     private String title;
 
     @Column(name = "created_at", nullable = false, updatable = false)

src/main/resources/db/migration/V1_10__create_base_tables.sql

@@ -51,7 +51,7 @@ CREATE TABLE IF NOT EXISTS "track_metadata" (
 CREATE TABLE IF NOT EXISTS "playlist" (
     "id" bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
     "owner_id" bigint NOT NULL,
-    "title" varchar(500) NOT NULL,
+    "title" varchar(500) NOT NULL UNIQUE,
     "created_at" timestamp NOT NULL DEFAULT NOW(),
     "updated_at" timestamp NOT NULL DEFAULT NOW(),
     CONSTRAINT "fk_playlist_owner_id"