import {
	OptionsWithUri,
} from 'request';

import {
	IExecuteFunctions,
	IExecuteSingleFunctions,
	IHookFunctions,
	ILoadOptionsFunctions,
} from 'n8n-core';

import {
	IDataObject,
} from 'n8n-workflow';

import {
	IRelation,
} from './Interfaces';

export async function orbitApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
	try {
		const credentials = this.getCredentials('orbitApi');
		if (credentials === undefined) {
			throw new Error('No credentials got returned!');
		}
		let options: OptionsWithUri = {
			headers: {
				Authorization: `Bearer ${credentials.accessToken}`,
			},
			method,
			qs,
			body,
			uri: uri || `https://app.orbit.love/api/v1${resource}`,
			json: true,
		};

		options = Object.assign({}, options, option);

		return await this.helpers.request!(options);
	} catch (error) {

		if (error.response && error.response.body && error.response.body.message) {
			// Try to return the error prettier
			const errorBody = error.response.body;
			throw new Error(`Orbit error response [${error.statusCode}]: ${errorBody.message}`);
		}

		// Expected error data did not get returned so throw the actual error
		throw error;
	}
}

/**
 * Make an API request to paginated flow endpoint
 * and return all results
 */
export async function orbitApiRequestAllItems(this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions, propertyName: string, method: string, resource: string, body: any = {}, query: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any

	const returnData: IDataObject[] = [];

	let responseData;
	query.page = 1;

	do {
		responseData = await orbitApiRequest.call(this, method, resource, body, query);
		returnData.push.apply(returnData, responseData[propertyName]);

		if (query.resolveIdentities === true) {
			resolveIdentities(responseData);
		}

		if (query.resolveMember === true) {
			resolveMember(responseData);
		}

		query.page++;
		if (query.limit && (returnData.length >= query.limit)) {
			return returnData;
		}

	} while (
		responseData.data.length !== 0
	);
	return returnData;
}

export function resolveIdentities(responseData: IRelation) {
	const identities: IDataObject = {};
	for (const data of responseData.included) {
		identities[data.id as string] = data;
	}

	if (!Array.isArray(responseData.data)) {
		responseData.data = [responseData.data];
	}

	for (let i = 0; i < responseData.data.length; i++) {
		for (let y = 0; y < responseData.data[i].relationships.identities.data.length; y++) {
			//@ts-ignore
			responseData.data[i].relationships.identities.data[y] = identities[responseData.data[i].relationships.identities.data[y].id];
		}
	}
}

export function resolveMember(responseData: IRelation) {
	const members: IDataObject = {};
	for (const data of responseData.included) {
		members[data.id as string] = data;
	}

	if (!Array.isArray(responseData.data)) {
		responseData.data = [responseData.data];
	}

	for (let i = 0; i < responseData.data.length; i++) {
		//@ts-ignore
		responseData.data[i].relationships.member.data = members[responseData.data[i].relationships.member.data.id];
	}
}