import { PrismaService } from '../prisma/prisma.service';
export declare class PriceService {
    private prisma;
    constructor(prisma: PrismaService);
    getPricesForProduct(productId: number): Promise<({
        source: {
            id: number;
            name: string;
            url: string;
            logo: string | null;
            lastScraped: Date | null;
            createdAt: Date;
            updatedAt: Date;
        };
    } & {
        id: number;
        createdAt: Date;
        sourceId: number;
        regularPrice: number;
        discountedPrice: number | null;
        discountPercentage: number | null;
        unitPrice: string | null;
        promotionType: string | null;
        promotionStart: Date | null;
        promotionEnd: Date | null;
        vatIncluded: boolean;
        lastUpdated: Date;
        productId: number;
    })[]>;
    comparePrices(productIds: number[]): Promise<{
        id: number;
        name: string;
        description: string | null;
        category: string;
        availability: boolean;
        latestPrice: {
            source: {
                id: number;
                name: string;
                url: string;
                logo: string | null;
                lastScraped: Date | null;
                createdAt: Date;
                updatedAt: Date;
            };
        } & {
            id: number;
            createdAt: Date;
            sourceId: number;
            regularPrice: number;
            discountedPrice: number | null;
            discountPercentage: number | null;
            unitPrice: string | null;
            promotionType: string | null;
            promotionStart: Date | null;
            promotionEnd: Date | null;
            vatIncluded: boolean;
            lastUpdated: Date;
            productId: number;
        };
    }[]>;
    getPriceHistory(productId: number, days?: number): Promise<{
        productId: number;
        history: unknown[];
        priceRange: {
            min: number;
            max: number;
        };
        averagePrice: number;
        discountStats: {
            maxDiscount: number;
            averageDiscount: number;
        };
    }>;
}