import { Base } from './base';
import { EmptyResultError } from './errors';
import { DeliveryAddressResponse, DeliveryAddressIdResponse, DeliveryAddressNotes } from './types/delivery-address';
import { UserSubscription } from './models/user-subscription';
import { DeliveryAddress } from './models/delivery-address';

export class DeliveryAddressService extends Base {
	private membershipApi = this.config.get('membershipApi');
	private deliveryAddressApiKey = this.config.get('deliveryAddressApiKey');

	/**
	 * This function is the public method for retrieving all user's delivery address details.
	 * @param subscription User subscription.
	 * @returns all of the user's delivery addresses.
	 */
	public async getDeliveryAddresses(subscription: UserSubscription): Promise<Array<DeliveryAddress>> {
		const url = `${this.membershipApi}/newspaper/delivery-addresses?subscriptionNumber=${subscription.number}`;
		const { items } = await this.requestGet({ url, key: this.deliveryAddressApiKey, targetApiSystemCode: 'newspaper-delivery-address-svc' });

		if (!items || !Array.isArray(items) || !items.length) {
			throw new EmptyResultError('No delivery addresses returned', { deliveryAddresses: items });
		}

		let currentDefaultAddress: DeliveryAddress | null;
		let currentWeekendAddress: DeliveryAddress | null;


		return items.map(item => {
			const deliveryAddress = new DeliveryAddress(item, subscription.startDate);

			if (deliveryAddress.isPastDefaultAddress) {
				const mostCurrentAddress = deliveryAddress.getMostCurrentAddress(currentDefaultAddress);

				if (currentDefaultAddress) {
					currentDefaultAddress.isCurrentDefaultAddress = false;
				}

				currentDefaultAddress = mostCurrentAddress;
				currentDefaultAddress.isCurrentDefaultAddress = true;

			} else if (deliveryAddress.isPastWeekendAddress) {
				const mostCurrentAddress = deliveryAddress.getMostCurrentAddress(currentWeekendAddress);

				if (currentWeekendAddress) {
					currentWeekendAddress.isCurrentWeekendAddress = false;
				}

				currentWeekendAddress = mostCurrentAddress;
				currentWeekendAddress.isCurrentWeekendAddress = true;
			}

			return deliveryAddress;
		});

	}

	/**
	 * This function is the public method for retrieving a single user's delivery address.
	 * @param deliveryAddressId The ID of a user's address.
	 * @returns The address details of the given addressId
	 */
	public async getDeliveryAddressById(deliveryAddressId: string): Promise<DeliveryAddressResponse> {
		const url = `${this.membershipApi}/newspaper/delivery-addresses/${deliveryAddressId}`;
		const { deliveryAddress } = await this.requestGet({ url, key: this.deliveryAddressApiKey, targetApiSystemCode: 'newspaper-delivery-address-svc' });
		return deliveryAddress;
	}

	/**
	 * This function is the public method for creating a new user's delivery address.
	 * @param deliveryAddress The user's address.
	 * @returns The ID of the address just created.
	 */
	public async createDeliveryAddress(deliveryAddress: DeliveryAddressResponse): Promise<DeliveryAddressIdResponse> {
		const url = `${this.membershipApi}/newspaper/delivery-addresses`;
		const body = deliveryAddress;

		return this.requestPost({ url, key: this.deliveryAddressApiKey, body });
	}

	/**
	 * This function is the public method for updating a new user's delivery address notes.
	 * @param deliveryAddressId The ID of the delivery address.
	 * @param deliveryAddressNotes The notes information to update.
	 * @returns The address details of the given addressId
	 */
	public async updateDeliveryAddress(deliveryAddressId: string, deliveryAddressNotes: DeliveryAddressNotes): Promise<DeliveryAddressResponse> {
		const url = `${this.membershipApi}/newspaper/delivery-addresses/${deliveryAddressId}`;
		const body = deliveryAddressNotes;
		const { deliveryAddress } = await this.requestPost({ url, key: this.deliveryAddressApiKey, body, targetApiSystemCode: 'newspaper-delivery-address-svc' });
		return deliveryAddress;
	}

	/**
	 * This function is the public method for updating a  user's future delivery address.
	 * @param deliveryAddressId The ID of the delivery address.
	 * @param deliveryAddress The user's future address to update.
	 * @returns The ID of the address just updated.
	 */
	public async updateFutureDeliveryAddress(deliveryAddressId: string, deliveryAddress: DeliveryAddressResponse): Promise<DeliveryAddressIdResponse> {
		const url = `${this.membershipApi}/newspaper/delivery-addresses/${deliveryAddressId}/actions/update-future-address`;
		const body = deliveryAddress;
		return this.requestPost({ url, key: this.deliveryAddressApiKey, body, targetApiSystemCode: 'newspaper-delivery-address-svc' });
	}

	/** This function is the public method do delete a delivery address.
	 * @param deliveryAddressId The ID of the delivery address.
	 * @returns Empty response from membership api endpoint
	*/
	public async deleteDeliveryAddress(deliveryAddressId: string): Promise<Object> {
		const url = `${this.membershipApi}/newspaper/delivery-addresses/${deliveryAddressId}`;
		return this.requestDelete({ url, key: this.deliveryAddressApiKey, targetApiSystemCode: 'newspaper-delivery-address-svc' });
	}

}