import { Base } from './base';
import {
	MembershipSuspensionResponse,
	MembershipSuspensionResponseSummary
} from './types/suspensions';
import { Suspension } from './models/suspension';
import { EmptyResultError } from './errors';

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

	/**
	 * This function is the public method for retrieving all user's suspension details.
	 * @param subscriptionNumber The number of a user's subscription.
	 * @returns all of the user's suspensions or an empty array if the user never set up any suspensions.
	 */
	public async getSuspensions(subscriptionNumber: string): Promise<Array<Suspension> | []> {
		const url = `${this.membershipApi}/newspaper/suspensions?subscriptionNumber=${subscriptionNumber}`;
		const { items } = await this.requestGet({ url, key: this.suspensionApiKey });

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

		return items.map((suspension: MembershipSuspensionResponse) => new Suspension(suspension));
	}

	/**
	 * This function is the public method for retrieving a user's suspension by ID.
	 * @param suspensionId The Id for a suspension
	 * @returns details of the suspension.
	 */
	public async getSuspensionById(suspensionId: string): Promise<Suspension> {
		const url = `${this.membershipApi}/newspaper/suspensions/${suspensionId}`;
		const { suspension } = await this.requestGet({ url, key: this.suspensionApiKey });

		return new Suspension(suspension);
	}

	/**
	 * This function is the public method for creating a user's suspension.
	 * @param subscriptionNumber The number of a user's subscription.
	 * @param startDate The date the suspension should start. Format yyyy-MM-dd.
	 * @param endDate The date the suspension should end. Format yyyy-MM-dd.
	 * @returns all of the user's suspensions.
	 */
	public async createSuspension(subscriptionNumber: string, startDate: string, endDate: string): Promise<Array<Suspension>> {
		const url = `${this.membershipApi}/newspaper/suspensions`;
		const body = { subscriptionNumber, startDate, endDate };

		const { items } = await this.requestPost({ url, key: this.suspensionApiKey, body });

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

		return items.map((suspension: MembershipSuspensionResponse) => new Suspension(suspension));
	}

	/**
	 * This function is the public method for ending a user's suspension.
	 * @param suspensionId The Id for the suspension that should be ended.
	 * @param endDateFrom Optional. Defaults to empty sting..
	 * @returns details of the suspension.
	 */
	public async endSuspension(suspensionId: string, endDateFrom?: string): Promise<Array<Suspension>> {
		const url = `${this.membershipApi}/newspaper/suspensions/${suspensionId}/actions/end`;
		const body = endDateFrom ? { endDateFrom } : {};
		const { items } = await this.requestPost({ url, key: this.suspensionApiKey, body });

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

		return items.map((suspension: MembershipSuspensionResponse) => new Suspension(suspension));
	}

	/**
	 * This function is the public method for deleting a user's suspension.
	 * @param suspensionId The ID of the suspension to delete.
	 * @returns the deleted suspension.
	 */
	public async deleteSuspension(suspensionId: string): Promise<Suspension> {
		const url = `${this.membershipApi}/newspaper/suspensions/${suspensionId}`;
		return await this.requestDelete({ url, key: this.suspensionApiKey });
	}

	/**
	 * This function is the public method for retrieving a user's suspension summary details.
	 * @param subscriptionNumber The number of a user's subscription.
	 * @returns a summary of a user's suspension.
	 */
	public async getSummary(subscriptionNumber: string): Promise<MembershipSuspensionResponseSummary> {
		const url = `${this.membershipApi}/newspaper/suspensions/summary?subscriptionNumber=${subscriptionNumber}`;
		return await this.requestGet({ url, key: this.suspensionApiKey });
	}
}