fix: harden world travel migration

apps/api/src/characters/entities/character.entity.ts

@@ -41,7 +41,9 @@ export class Character {
   @UpdateDateColumn({ name: 'updated_at', type: 'timestamptz' })
   updatedAt!: Date;
 
-  @ManyToOne(() => LocationDefinition, (location) => location.characters)
+  @ManyToOne(() => LocationDefinition, (location) => location.characters, {
+    onDelete: 'RESTRICT',
+  })
   @JoinColumn({ name: 'current_location_id' })
   currentLocation!: LocationDefinition;
 }

apps/api/src/database/migrations/1787072400000-CreateVisibleVerticalSlice.ts

@@ -2,9 +2,8 @@ import { MigrationInterface, QueryRunner } from 'typeorm';
 
 export class CreateVisibleVerticalSlice1787072400000 implements MigrationInterface {
   public async up(queryRunner: QueryRunner): Promise<void> {
-    await queryRunner.query('CREATE EXTENSION IF NOT EXISTS "uuid-ossp"');
     await queryRunner.query(`CREATE TABLE "location_definitions" (
-      "id" uuid NOT NULL DEFAULT uuid_generate_v4(),
+      "id" uuid NOT NULL DEFAULT gen_random_uuid(),
       "key" character varying(100) NOT NULL,
       "name" character varying(150) NOT NULL,
       "description" text NOT NULL,
@@ -23,7 +22,7 @@ export class CreateVisibleVerticalSlice1787072400000 implements MigrationInterfa
       'CREATE UNIQUE INDEX "IDX_location_definitions_key" ON "location_definitions" ("key")',
     );
     await queryRunner.query(`CREATE TABLE "characters" (
-      "id" uuid NOT NULL DEFAULT uuid_generate_v4(),
+      "id" uuid NOT NULL DEFAULT gen_random_uuid(),
       "name" character varying(150) NOT NULL,
       "level" integer NOT NULL,
       "experience" integer NOT NULL,
@@ -40,7 +39,7 @@ export class CreateVisibleVerticalSlice1787072400000 implements MigrationInterfa
       'CREATE INDEX "IDX_characters_current_location" ON "characters" ("current_location_id")',
     );
     await queryRunner.query(`CREATE TABLE "location_connections" (
-      "id" uuid NOT NULL DEFAULT uuid_generate_v4(),
+      "id" uuid NOT NULL DEFAULT gen_random_uuid(),
       "from_location_id" uuid NOT NULL,
       "to_location_id" uuid NOT NULL,
       "travel_duration_seconds" integer NOT NULL,
@@ -62,7 +61,7 @@ export class CreateVisibleVerticalSlice1787072400000 implements MigrationInterfa
       "CREATE TYPE \"travel_status_enum\" AS ENUM ('TRAVELLING', 'COMPLETED')",
     );
     await queryRunner.query(`CREATE TABLE "travels" (
-      "id" uuid NOT NULL DEFAULT uuid_generate_v4(),
+      "id" uuid NOT NULL DEFAULT gen_random_uuid(),
       "character_id" uuid NOT NULL,
       "origin_location_id" uuid NOT NULL,
       "target_location_id" uuid NOT NULL,

apps/api/src/database/migrations/visible-vertical-slice.migration.spec.ts

@@ -1,8 +1,7 @@
 import 'reflect-metadata';
-import { readFileSync } from 'node:fs';
+import { getMetadataArgsStorage, QueryRunner } from 'typeorm';
-import { join } from 'node:path';
-import { getMetadataArgsStorage } from 'typeorm';
 import { Character } from '../../characters/entities/character.entity';
+import { CreateVisibleVerticalSlice1787072400000 } from './1787072400000-CreateVisibleVerticalSlice';
 import { Travel } from '../../travel/entities/travel.entity';
 import { LocationConnection } from '../../world/entities/location-connection.entity';
 import { LocationDefinition } from '../../world/entities/location-definition.entity';
@@ -25,6 +24,11 @@ describe('visible vertical slice schema', () => {
 
     expect(locationIndex).toBeDefined();
 
+    const relations = metadata.relations.filter((relation) =>
+      [Character, LocationConnection, Travel].includes(
+        relation.target as typeof Character,
+      ),
+    );
     const joinColumns = metadata.joinColumns
       .filter((joinColumn) =>
         [Character, LocationConnection, Travel].includes(
@@ -43,25 +47,122 @@ describe('visible vertical slice schema', () => {
         'target_location_id',
       ]),
     );
+
+    expect(
+      relations.map((relation) => ({
+        onDelete: relation.options.onDelete,
+        propertyName: relation.propertyName,
+        target: relation.target,
+      })),
+    ).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          onDelete: 'RESTRICT',
+          propertyName: 'currentLocation',
+          target: Character,
+        }),
+        expect.objectContaining({
+          onDelete: 'RESTRICT',
+          propertyName: 'fromLocation',
+          target: LocationConnection,
+        }),
+        expect.objectContaining({
+          onDelete: 'RESTRICT',
+          propertyName: 'toLocation',
+          target: LocationConnection,
+        }),
+        expect.objectContaining({
+          onDelete: 'RESTRICT',
+          propertyName: 'character',
+          target: Travel,
+        }),
+        expect.objectContaining({
+          onDelete: 'RESTRICT',
+          propertyName: 'originLocation',
+          target: Travel,
+        }),
+        expect.objectContaining({
+          onDelete: 'RESTRICT',
+          propertyName: 'targetLocation',
+          target: Travel,
+        }),
+      ]),
+    );
   });
 
-  it('creates the complete schema with explicit reversible SQL', () => {
+  it('emits reversible SQL in dependency order without extension ownership', async () => {
-    const migrationText = readFileSync(
+    const query = jest.fn().mockResolvedValue(undefined);
-      join(__dirname, '1787072400000-CreateVisibleVerticalSlice.ts'),
+    const queryRunner = { query } as unknown as QueryRunner;
-      'utf8',
+    const migration = new CreateVisibleVerticalSlice1787072400000();
-    );
 
-    expect(migrationText).toContain('CREATE TABLE "location_definitions"');
+    await migration.up(queryRunner);
-    expect(migrationText).toContain('CREATE TABLE "characters"');
+
-    expect(migrationText).toContain('CREATE TABLE "location_connections"');
+    const upQueries = query.mock.calls.map(([sql]) => sql as string);
-    expect(migrationText).toContain('CREATE TABLE "travels"');
+
-    expect(migrationText).toContain(
+    expect(upQueries).toHaveLength(14);
+    expect(upQueries).toEqual(
+      expect.arrayContaining([
+        expect.stringContaining('CREATE TABLE "location_definitions"'),
+        expect.stringContaining('CREATE TABLE "characters"'),
+        expect.stringContaining('CREATE TABLE "location_connections"'),
+        expect.stringContaining('CREATE TABLE "travels"'),
+        expect.stringContaining(
           'CREATE UNIQUE INDEX "IDX_location_connection_direction"',
-    );
+        ),
-    expect(migrationText).toContain(
+        expect.stringContaining(
           'CREATE UNIQUE INDEX "IDX_active_travel_per_character"',
+        ),
+        expect.stringContaining('WHERE "status" = \'TRAVELLING\''),
+      ]),
     );
-    expect(migrationText).toContain('DROP TYPE "travel_status_enum"');
+    expect(upQueries[0]).toContain('CREATE TABLE "location_definitions"');
-    expect(migrationText).not.toContain('synchronize');
+    expect(upQueries).not.toEqual(
+      expect.arrayContaining([expect.stringContaining('CREATE EXTENSION')]),
+    );
+    expect(upQueries).not.toEqual(
+      expect.arrayContaining([expect.stringContaining('uuid_generate_v4')]),
+    );
+    const tableQueries = upQueries.filter((sql) =>
+      sql.includes('CREATE TABLE'),
+    );
+    expect(tableQueries).toHaveLength(4);
+    expect(
+      tableQueries.every((sql) => sql.includes('DEFAULT gen_random_uuid()')),
+    ).toBe(true);
+    const foreignKeySql = upQueries
+      .filter((sql) => sql.includes('ON DELETE RESTRICT'))
+      .join('\n');
+    expect(
+      upQueries.filter((sql) => sql.includes('ON DELETE RESTRICT')),
+    ).toHaveLength(3);
+    expect(foreignKeySql).toContain('FK_characters_current_location');
+    expect(foreignKeySql).toContain('FK_location_connections_from_location');
+    expect(foreignKeySql).toContain('FK_location_connections_to_location');
+    expect(foreignKeySql).toContain('FK_travels_character');
+    expect(foreignKeySql).toContain('FK_travels_origin_location');
+    expect(foreignKeySql).toContain('FK_travels_target_location');
+
+    await migration.down(queryRunner);
+
+    const downQueries = query.mock.calls
+      .slice(upQueries.length)
+      .map(([sql]) => sql as string);
+
+    expect(downQueries).toEqual([
+      'DROP INDEX "IDX_active_travel_per_character"',
+      'DROP INDEX "IDX_travels_target_location"',
+      'DROP INDEX "IDX_travels_origin_location"',
+      'DROP INDEX "IDX_travels_character"',
+      'DROP TABLE "travels"',
+      'DROP INDEX "IDX_location_connections_to_location"',
+      'DROP INDEX "IDX_location_connections_from_location"',
+      'DROP INDEX "IDX_location_connection_direction"',
+      'DROP TABLE "location_connections"',
+      'DROP INDEX "IDX_characters_current_location"',
+      'DROP TABLE "characters"',
+      'DROP INDEX "IDX_location_definitions_key"',
+      'DROP TABLE "location_definitions"',
+      'DROP TYPE "travel_status_enum"',
+    ]);
   });
 });

apps/api/src/travel/entities/travel.entity.ts

@@ -41,15 +41,15 @@ export class Travel {
   @CreateDateColumn({ name: 'created_at', type: 'timestamptz' })
   createdAt!: Date;
 
-  @ManyToOne(() => Character)
+  @ManyToOne(() => Character, { onDelete: 'RESTRICT' })
   @JoinColumn({ name: 'character_id' })
   character!: Character;
 
-  @ManyToOne(() => LocationDefinition)
+  @ManyToOne(() => LocationDefinition, { onDelete: 'RESTRICT' })
   @JoinColumn({ name: 'origin_location_id' })
   originLocation!: LocationDefinition;
 
-  @ManyToOne(() => LocationDefinition)
+  @ManyToOne(() => LocationDefinition, { onDelete: 'RESTRICT' })
   @JoinColumn({ name: 'target_location_id' })
   targetLocation!: LocationDefinition;
 }

apps/api/src/world/entities/location-connection.entity.ts

@@ -38,6 +38,7 @@ export class LocationConnection {
   @ManyToOne(
     () => LocationDefinition,
     (location) => location.outgoingConnections,
+    { onDelete: 'RESTRICT' },
   )
   @JoinColumn({ name: 'from_location_id' })
   fromLocation!: LocationDefinition;
@@ -45,6 +46,7 @@ export class LocationConnection {
   @ManyToOne(
     () => LocationDefinition,
     (location) => location.incomingConnections,
+    { onDelete: 'RESTRICT' },
   )
   @JoinColumn({ name: 'to_location_id' })
   toLocation!: LocationDefinition;