add prev, next links to AuthState

src/lib/server/entity/AuthState.ts

@@ -14,6 +14,14 @@ export class AuthState {
 	@Column({type: 'enum', enum: AuthProvider, nullable: false})
 	provider!: AuthProvider;
 
+	/** Where the user will be sent if authentication is cancelled */
+	@Column({type: 'varchar', length: 300, nullable: false})
+	prev = '/';
+
+	/** Where the user should be redirected after successfully authenticating */
+	@Column({type: 'varchar', length: 300, nullable: false})
+	next = '/';
+
 	/** The state value itself */
 	@Column({type: 'varchar', length: 32, nullable: false})
 	state = crypto.randomBytes(16).toString('hex');