setup database, entities, and migrations

src/database/entities/package-detail.entity.ts

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+import { FlightClass } from "@/database/entities/flight-class.entity";
+import { Hotel } from "@/database/entities/hotel.entity";
+import { Package } from "@/database/entities/package.entity";
+import { TransportationClass } from "@/database/entities/transportation-class.entity";
+import {
+	Collection,
+	Entity,
+	ManyToMany,
+	ManyToOne,
+	PrimaryKey,
+	Property,
+	Unique,
+	type Rel,
+} from "@mikro-orm/core";
+
+@Entity()
+@Unique({ properties: ["package", "departureDate"] })
+export class PackageDetail {
+	@PrimaryKey({ type: "varchar", length: 30 })
+	id!: string;
+
+	@Property({ type: "varchar", length: 200 })
+	@Unique()
+	slug!: string;
+
+	@ManyToOne(() => Package)
+	package!: Rel<Package>;
+
+	@Property({ type: "date" })
+	departureDate!: Date;
+
+	@ManyToOne(() => Hotel)
+	makkahHotel!: Rel<Hotel>;
+
+	@ManyToOne(() => Hotel)
+	madinahHotel!: Rel<Hotel>;
+
+	@ManyToOne(() => TransportationClass)
+	transportation!: Rel<TransportationClass>;
+
+	@Property({ type: "decimal", unsigned: true })
+	quadPrice!: number;
+
+	@Property({ type: "decimal", unsigned: true })
+	triplePrice!: number;
+
+	@Property({ type: "decimal", unsigned: true })
+	doublePrice!: number;
+
+	@Property({ type: "decimal", nullable: true, unsigned: true })
+	infantPrice?: number;
+
+	@Property({
+		type: "timestamp",
+		onCreate: () => new Date(),
+	})
+	createdAt!: Date;
+
+	@Property({
+		type: "timestamp",
+		onCreate: () => new Date(),
+		onUpdate: () => new Date(),
+	})
+	updatedAt!: Date;
+
+	// Collections
+
+	@ManyToMany(
+		() => FlightClass,
+		(flightClass) => flightClass.tourPackageDetails,
+		{
+			owner: true,
+			fixedOrder: true,
+		},
+	)
+	tourFlightClasses = new Collection<FlightClass>(this);
+
+	@ManyToMany(
+		() => FlightClass,
+		(flightClass) => flightClass.outboundPackageDetails,
+		{
+			owner: true,
+			fixedOrder: true,
+		},
+	)
+	outboundFlightClasses = new Collection<FlightClass>(this);
+
+	@ManyToMany(
+		() => FlightClass,
+		(flightClass) => flightClass.inboundPackageDetails,
+		{
+			owner: true,
+			fixedOrder: true,
+		},
+	)
+	inboundFlightClasses = new Collection<FlightClass>(this);
+
+	@ManyToMany(() => Hotel, (hotel) => hotel.tourPackageDetails, {
+		owner: true,
+		fixedOrder: true,
+	})
+	tourHotels = new Collection<Hotel>(this);
+}