import { ConfigService } from '@nestjs/config';
import { FoodItem } from '../models/food-item.model';
import { APICache } from '../models/api-cache.model';
export declare class NutritionService {
    private configService;
    private foodItemModel;
    private apiCacheModel;
    private apiKey;
    private baseUrl;
    private headers;
    private cacheDurationDays;
    constructor(configService: ConfigService, foodItemModel: typeof FoodItem, apiCacheModel: typeof APICache);
    searchFood(query: string): Promise<{
        name: any;
        calories: any;
        protein_g: any;
        carbs_g: any;
        fat_g: any;
        fiber_g: any;
        sugar_g: any;
        sodium_mg: any;
        serving_size_g: any;
        source: string;
    }[]>;
    _getFromCache(query: string): Promise<{
        name: any;
        calories: any;
        protein_g: any;
        carbs_g: any;
        fat_g: any;
        fiber_g: any;
        sugar_g: any;
        sodium_mg: any;
        serving_size_g: any;
        source: string;
    }[]>;
    _saveToCache(query: string, source: string, data: any): Promise<void>;
    _parseApiResponse(data: any[]): {
        name: any;
        calories: any;
        protein_g: any;
        carbs_g: any;
        fat_g: any;
        fiber_g: any;
        sugar_g: any;
        sodium_mg: any;
        serving_size_g: any;
        source: string;
    }[];
    saveFoodToDb(foodData: any): Promise<FoodItem>;
    searchAllSources(query: string): Promise<any[]>;
}