test-assignment-parcellab/src/packages.service.ts

import { Inject, Injectable } from '@nestjs/common';
import {
    Dependencies,
    geocodingProviderDependency,
    packagesRepositoryDependency,
    weatherProviderDependency,
} from './dependencies';
import { CarrierType } from './types';

@Injectable()
export class PackagesService {
    constructor(
        @Inject(packagesRepositoryDependency)
        private readonly packagesRepository: Dependencies[typeof packagesRepositoryDependency],
        @Inject(geocodingProviderDependency)
        private readonly geocodingProvider: Dependencies[typeof geocodingProviderDependency],
        @Inject(weatherProviderDependency)
        private readonly weatherProvider: Dependencies[typeof weatherProviderDependency],
    ) {}

    async getPackageInfoWithWeather(
        carrier: CarrierType,
        trackingNumber: string,
    ) {
        const packageDataResponse = await this.packagesRepository.getPackage(
            carrier,
            trackingNumber,
        );

        if (!packageDataResponse.found) {
            return null;
        }

        const packageData = packageDataResponse.value;

        try {
            const receiverLocation = await this.geocodingProvider.geocode(
                packageData.receiverAddress,
            );
            const receiverWeather =
                await this.weatherProvider.getCurrentWeather(receiverLocation);
            return {
                packageData,
                receiverWeather,
            };
        } catch {
            return { packageData };
        }
    }
}