setup database, entities, and migrations

src/database/entities/city.entity.ts

@@ -0,0 +1,50 @@
+import { Airport } from "@/database/entities/airport.entity";
+import { Country } from "@/database/entities/country.entity";
+import { Hotel } from "@/database/entities/hotel.entity";
+import {
+	Collection,
+	Entity,
+	ManyToOne,
+	OneToMany,
+	PrimaryKey,
+	Property,
+	Unique,
+	type Rel,
+} from "@mikro-orm/core";
+
+@Entity()
+export class City {
+	@PrimaryKey({ type: "varchar", length: 30 })
+	id!: string;
+
+	@Property({ type: "varchar", length: 200 })
+	@Unique()
+	slug!: string;
+
+	@Property({ type: "varchar", length: 100 })
+	name!: string;
+
+	@ManyToOne(() => Country)
+	country!: Rel<Country>;
+
+	@Property({
+		type: "timestamp",
+		onCreate: () => new Date(),
+	})
+	createdAt!: Date;
+
+	@Property({
+		type: "timestamp",
+		onCreate: () => new Date(),
+		onUpdate: () => new Date(),
+	})
+	updatedAt!: Date;
+
+	// Collections
+
+	@OneToMany(() => Airport, (airport) => airport.city)
+	cities = new Collection<City>(this);
+
+	@OneToMany(() => Hotel, (hotel) => hotel.city)
+	hotels = new Collection<Hotel>(this);
+}