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import { references } from '$lib/server/db/schema';
import { eq, ne, and, desc, asc } from 'drizzle-orm';
import type { AppDatabase } from '$lib/server/db/types';
import type { Reference } from './types';
/** Primary refs first, then best score, then insertion order. */
export const referenceOrder = [
desc(references.isPrimary),
desc(references.qualityScore),
asc(references.id),
];
export class ReferencesService {
constructor(private readonly db: AppDatabase) {}
async loadForGrocery(groceryId: number): Promise<Reference[]> {
return this.db
.select()
.from(references)
.where(eq(references.groceryId, groceryId))
.orderBy(...referenceOrder);
}
/**
* Marks `id` as the primary ref of its grocery, clearing any sibling primary
* so at most one ref per grocery is promoted.
*/
async promote(id: number): Promise<void> {
const [target] = await this.db
.select()
.from(references)
.where(eq(references.id, id));
if (!target) throw new Error('Reference not found');
await this.db
.update(references)
.set({ isPrimary: true })
.where(eq(references.id, id));
await this.db
.update(references)
.set({ isPrimary: false })
.where(
and(eq(references.groceryId, target.groceryId), ne(references.id, id)),
);
}
async add(
groceryId: number,
reference: string,
price: number | null,
unit: string | null,
qualityScore: number | null,
): Promise<Reference> {
const [inserted] = await this.db
.insert(references)
.values({ groceryId, reference, price, unit, qualityScore })
.returning();
return inserted;
}
async deleteReference(id: number): Promise<void> {
await this.db.delete(references).where(eq(references.id, id));
}
}
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